TRANSMISSION (DIAGNOSTICS)
TM(diag)

TRANSMISSION (DIAGNOSTICS) > Basic Diagnostic Procedure
PROCEDURE

1. CHECK PRE-INSPECTION.
1.

Ask the customer when and how the trouble occurred using the interview check list. TRANSMISSION (DIAGNOSTICS)>Check List for Interview

2.

Before performing diagnostics, check the following items which might affect CVT problems.

- General inspection TRANSMISSION (DIAGNOSTICS)>General Description>INSPECTION

- Disconnection of harness connector

- Visual check for harness damage

- Oil leakage

- Stall test CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Stall Test

- Secondary pressure test CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Secondary Pressure (Line Pressure) Test

- Transfer clutch pressure test CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transfer Clutch Pressure Test

- Time lag test CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Time Lag Test

- ROAD TEST CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Road Test

- Inhibitor switch CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Inhibitor Switch

Is the check result OK?

2

Repair the items which may be affecting the CVT trouble.

2. CHECK AT OIL TEMP LIGHT.

Turn the ignition switch to ON and wait for at least 2 seconds.

Does the AT OIL TEMP light illuminate?

3

Check the AT OIL TEMP light.

3. CHECK AT OIL TEMP LIGHT.

Start the engine and wait for 2 seconds or more.

Does the AT OIL TEMP light blink?

4

5

4. CHECK DTC.

Read the DTC of [Transmission] using the Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

If the communication function of the Subaru Select Monitor cannot be executed properly, check the communication circuit. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure for Subaru Select Monitor Communication

Are any DTCs displayed?

Record the DTC, time stamp and freeze frame data. 6

5

5. PERFORM GENERAL DIAGNOSTICS.
1.

Inspect using “Diagnostic Procedure without Diagnostic Trouble Code (DTC)”. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure without Diagnostic Trouble Code (DTC)

2.

Inspect using “Diagnostics with Phenomenon”. TRANSMISSION (DIAGNOSTICS)>Diagnostics with Phenomenon

3.

Perform the road test. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Road Test

4.

Read the DTC of [Transmission] using the Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are any DTCs displayed?

6

Finish the diagnosis.

6. PERFORM DIAGNOSIS.
1.

Inspect by referring to “Diagnostic Procedure with Diagnostic Trouble Code (DTC)”. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)

For the DTC table, refer to “Diagnostic Trouble Code (DTC)”. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2.

Repair or replace the cause of trouble.

3.

Using the Subaru Select Monitor, perform the clear memory of [Transmission]. COMMON(diag)>Clear memory

4.

Execute the inspection mode. TRANSMISSION (DIAGNOSTICS)>Inspection Mode

5.

Check the readiness code of [Transmission] using Subaru Select Monitor and confirm that the diagnosis is completed. TRANSMISSION (DIAGNOSTICS)>All Readiness Diagnostic Code(s)

6.

Read the DTC of [Transmission] using the Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are any DTCs displayed?

Inspect by referring to “Diagnostic Procedure with Diagnostic Trouble Code (DTC)”. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)

Finish the diagnosis.

TRANSMISSION (DIAGNOSTICS) > Check List for Interview
CHECK

Check the following items when a problem has occurred.

Use copies of this page for interviewing customers.

Customer’s name |
Date of purchase |
Date of repair |
Transmission model | Transmission | Chassis number
Odometer reading | km (miles)
Frequency | Continuous Intermittent (  times/day)
Weather | Fine Cloudy Rainy Snowy Others (        )
Place | Highland Suburbs Inner city Uphill Downhill Rough road Others (        )
Ambient air temperature | Hot Warm Cool Cold
Vehicle speed | km/h (MPH)
AT OIL TEMP light | Blinks continuously | Does not blink
Select lever position | P R N D Manual mode L
Driving condition | Not affected At racing While decelerating | At starting While accelerating While turning ( RH / LH) | While idling When cruising (Vehicle speed    km/h) Immediately after starting the engine
Manual mode | ON OFF
Symptoms | Vehicle does not move ( Any position Particular position)
Vehicle does not move (no load racing condition as in N range)
Vehicle does not move (engine speed does not increase, felt as stall condition)
Noise or vibration (Specifically:                         )
Shock felt at N → D selection (   seconds after shifting, when engine cold or after warm-up)
Shock felt at N → R selection (   seconds after shifting, when engine cold or after warm-up)
Shifting is wrong (Specifically:                         )
Shock or judder during driving
Fails to accelerate
Engine speed increases abruptly during driving
Shock or judder during standing start
Select lever does not move
Others (        )

TRANSMISSION (DIAGNOSTICS) > General Description
CAUTION
1. AIRBAG SYSTEM

- Do not use the electrical test equipment on the airbag system wiring harnesses and connector circuits.

- Be careful not to damage the airbag system wiring harness.

2. CONTROL MODULE
1.

The TCM connector is waterproof. When measuring the TCM connector terminal voltage, or the resistance between the terminals, use the check board.

2.

When measuring the voltage or resistance of individual sensors, use a tapered pin with a diameter of 0.6 mm (0.024 in) or less and touch it to the tip of terminal. Never insert the tapered pin into the terminal because it deforms inside which may lead to malfunction.

If a taper pin or the like has been inserted into the connector terminal, replace the connector.

TRANSMISSION (DIAGNOSTICS) > General Description
INSPECTION
1. BATTERY

Check the battery. STARTING/CHARGING SYSTEMS(H4DO)>Battery>INSPECTION

2. TRANSMISSION GROUND

Make sure that the ground terminal bolt is tightened securely.

3. OPERATION OF SELECT LEVER

Make sure there is no noise, dragging or contact pattern in each select lever range.

Stop the engine while checking operation of the select lever.

TRANSMISSION (DIAGNOSTICS) > General Description
PREPARATION TOOL
1. SPECIAL TOOL

ILLUSTRATION | TOOL NUMBER | DESCRIPTION | REMARKS
| — | SUBARU SELECT MONITOR 4 | Used for setting of each function and troubleshooting for electrical system. For detailed operation procedures of Subaru Select Monitor 4, refer to “Help” of application.
| 18460AA040 | CHECK BOARD | Used for measuring voltage and resistance of TCM terminals.

2. GENERAL TOOL

TOOL NAME | REMARKS
Circuit tester | Used for measuring resistance, voltage and current.
Oscilloscope | Used for measuring the sensor.
DST-i | Used together with Subaru Select Monitor 4.

TRANSMISSION (DIAGNOSTICS) > General Description
SYSTEM BLOCK DIAGRAM
TRANSMISSION (DIAGNOSTICS) > Electrical Component Location
LOCATION

(1) | TCM | (4) | Primary speed sensor | (6) | Electric oil pump
(2) | Secondary speed sensor | (5) | Secondary pressure sensor | (7) | Inhibitor switch
(3) | Turbine speed sensor

TRANSMISSION (DIAGNOSTICS) > Transmission Control Module (TCM) I/O Signal
ELECTRICAL SPECIFICATION

Use the check board when measuring the TCM terminal.

Measure after warming up.

Terminal No. | Contents | Measuring condition | Standard | Note
1 ←→ Chassis ground | ATF temperature sensor GND | Always | 0 V | —
2 ←→ Chassis ground | Secondary pressure sensor GND | Always | 0 V | —
5 ←→ 2 | Secondary pressure sensor | Ignition switch ON, engine OFF | Approx. 0.5 V (0 MPa) | Value increases with increase of engine load. (0.5 — 4.5 V)
Engine ON and idle | Approx. 1.0 V (1.0 MPa)
6 ←→ 1 | ATF temperature sensor | ATF temperature at 20°C (68°F) | Approx. 2.5 V | Approx. 2.5 kΩ
ATF temperature at 80°C (176°F) | Approx. 0.7 V | Approx. 330 Ω
7 ←→ 26 or 42 | Electric oil pump operation status signal | Engine ON | 0 or battery voltage | Refer to waveform (1). AUTO START STOP (DIAGNOSTICS)>Control Module I/O Signal>WAVEFORM
During Auto Start Stop | 0 or battery voltage | Refer to waveform (3). AUTO START STOP (DIAGNOSTICS)>Control Module I/O Signal>WAVEFORM
In malfunction | 0 or battery voltage | Electric oil pump abnormality DUTY: 60 — 90%
8 ←→ 26 or 42 | Main power supply | Ignition switch ON | Battery voltage | —
12 ←→ 26 or 42 | Turbine speed sensor | Engine ON, “P” or “N” range | 0 or 5 V | Refer to the waveform (sensor)
13 ←→ 26 or 42 | Secondary speed sensor | While driving | 0 or 5 V | Refer to the waveform (sensor)
14 ←→ 26 or 42 | Primary speed sensor | While driving | 0 or 5 V | Refer to the waveform (sensor)
15 ←→ 26 or 42 | Lock-up duty solenoid | Lock-up ON | Refer to the waveform (solenoid (5)) | Resistance: Approx. 10 — 14.2 Ω Resistance value at 20°C (68°F). Value is higher as the temperature increase.
16 ←→ 26 or 42 | F&R solenoid | Engine ON | Refer to the waveform (solenoid (1)) | Resistance: Approx. 3.5 — 7.1 Ω Resistance value at 20°C (68°F). Value is higher as the temperature increase.
18 ←→ 26 or 42 | Manual mode down switch∗1 | Ignition switch ON, Manual mode down switch ON | 0 V | —
Ignition switch ON, Manual mode down switch OFF | Battery voltage
19 ←→ 26 or 42 | Manual mode up switch∗1 | Ignition switch ON, Manual mode up switch ON | 0 V | —
Ignition switch ON, Manual mode up switch OFF | Battery voltage
20 ←→ 26 or 42 | Lo/Manual mode switch | Ignition switch ON, L range switch/Manual mode switch ON | 0 V | —
Ignition switch ON, L range switch/Manual mode switch OFF | Battery voltage
21 ←→ 26 or 42 | Electric oil pump operation command signal | Engine ON | 0 or battery voltage | Refer to waveform (2). AUTO START STOP (DIAGNOSTICS)>Control Module I/O Signal>WAVEFORM
During Auto Start Stop | 0 or battery voltage | Refer to waveform (4). AUTO START STOP (DIAGNOSTICS)>Control Module I/O Signal>WAVEFORM
22 ←→ 26 or 42 | Electric oil pump relay drive | Ignition switch ON | 0 V | —
When approx. 3 seconds pass since ignition switch was turned to OFF | Battery voltage | —
23 ←→ 26 or 42 | Start command circuit | Except during restarting (from Auto Start Stop release to engine ON) | Battery voltage | —
During restarting (from Auto Start Stop release to engine ON) | 0 V | —
24 ←→ 26 or 42 | Main power supply | Ignition switch ON | Battery voltage | —
26 ←→ Chassis ground | GND | Always | 0 V | —
29 ←→ 26 or 42 | Stop light switch | Stop light switch ON | Battery voltage | —
Stop light switch OFF | 0 V
30 ←→ 26 or 42 | Primary DOWN solenoid | Engine ON, while DOWN shifting | Refer to the waveform (solenoid (4)) | Resistance: Approx. 10 — 14.2 Ω Resistance value at 20°C (68°F). Value is higher as the temperature increase.
32 ←→ 26 or 42 | Secondary solenoid | Engine ON | Refer to the waveform (solenoid (2)) | Resistance: Approx. 4.8 — 8.4 Ω Resistance value at 20°C (68°F). Value is higher as the temperature increase.
33 ←→ 2 | Secondary pressure sensor power supply output | Ignition switch ON | 5 V | —
34 ←→ 26 or 42 | Backup power supply | Always | Battery voltage | —
35 ←→ 26 or 42 | D range switch | Ignition switch ON, D range | 0 V | —
Ignition switch ON, other than D range | Battery voltage
36 ←→ 26 or 42 | N range switch | Ignition switch ON, N range | 0 V | —
Ignition switch ON, other than N range | Battery voltage
37 ←→ 26 or 42 | R range switch | Ignition switch ON, R range | 0 V | —
Ignition switch ON, other than R range | Battery voltage
38 ←→ 26 or 42 | P range switch | Ignition switch ON, P range | 0 V | —
Ignition switch ON, other than P range | Battery voltage
40 ←→ 26 or 42 | Main power supply | Ignition switch ON | Battery voltage | —
41 ←→ 26 or 42 | Ignition switch | Ignition switch ON | Battery voltage | —
42 ←→ Chassis ground | GND | Always | 0 V | —
43 | CAN communication line (+) | — | — | —
44 | CAN communication line (−) | — | — | —
45 ←→ 26 or 42 | Starter SW | At cranking | Battery voltage | —
Except at cranking | 0 V | —
47 ←→ 26 or 42 | Primary UP solenoid | Engine ON, while UP shifting | Refer to the waveform (solenoid (3)) | Resistance: Approx. 10 — 14.2 Ω Resistance value at 20°C (68°F). Value is higher as the temperature increase.
48 ←→ 26 or 42 | AWD solenoid | Engine ON, “P” or “N” range | Refer to the waveform (solenoid (6)) | Resistance: Approx. 1.5 — 4.9 Ω Resistance value at 20°C (68°F). Value is higher as the temperature increase.
Engine ON, “D” range, brake ON | Refer to the waveform (solenoid (7))

∗1: With paddle shift switch

TRANSMISSION (DIAGNOSTICS) > Transmission Control Module (TCM) I/O Signal
WAVEFORM
1. SENSOR

2. SOLENOID

TRANSMISSION (DIAGNOSTICS) > Inspection Mode
PROCEDURE

It is possible to diagnose the DTC by performing the indicated inspection mode. After correcting the DTC, perform a necessary inspection mode and make sure that the function is resumed correctly and the DTC is recorded.

1. PREPARATION FOR THE INSPECTION MODE
1.

Check that the battery voltage is 12 V or more and fuel remains approx. half [20 — 40 L (5.3 — 10.6 US gal, 4.4 — 8.8 Imp gal)].

2.

After performing the diagnostics and clearing memory, check that no DTC remains.

Perform the inspection mode after warming up the engine except when the ATF temperature at engine start is specified.

2. INSPECTION MODE A

DTC | Item | Condition
P0604 | INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR | —
P0605 | INTERNAL CONTROL MODULE READ ONLY MEMORY (ROM) ERROR | —
P0613 | TCM PROCESSOR | —
P062F | INTERNAL CONTROL MODULE EEPROM ERROR | Perform inspection mode A twice
P0705 | TRANSMISSION RANGE SENSOR "A" CIRCUIT (PRNDL INPUT) | —
P0712 | TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT LOW | —
P0842 | TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT LOW | —
P0843 | TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT HIGH | —
P0890 | TCM POWER RELAY SENSE CIRCUIT LOW | —
P0962 | PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT LOW | —
P0963 | PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT HIGH | —
P0966 | PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT LOW | —
P0967 | PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT HIGH | —
P2530 | IGNITION SWITCH RUN POSITION CIRCUIT | —
P2763 | TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT HIGH | After inspection mode A is done, perform inspection mode C

Diagnostic procedure:

1.

Start the engine.

2.

Check the readiness code using Subaru Select Monitor and confirm that the diagnosis is not completed. TRANSMISSION (DIAGNOSTICS)>All Readiness Diagnostic Code(s)

3.

Depress the brake pedal and move the select lever to each range at an interval of five seconds.

Move the select lever in the following order: “P” → “R” → “N” → “D” → “N” → “R” → “P”.

4.

Check the readiness code using Subaru Select Monitor, confirm that the diagnosis is completed, and end the procedure. TRANSMISSION (DIAGNOSTICS)>All Readiness Diagnostic Code(s)

3. INSPECTION MODE B

DTC | Item | Condition
P0711 | TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT RANGE/PERFORMANCE | —

Diagnostic procedure:

1.

Start the engine under condition that ATF temperature is at 20°C (68°F) or below.

2.

Check the readiness code using Subaru Select Monitor and confirm that the diagnosis is not completed. TRANSMISSION (DIAGNOSTICS)>All Readiness Diagnostic Code(s)

3.

Drive in any driving pattern for 20 minutes. (Include driving at a constant legal speed (for 20 seconds) at least once.)

Repeat two or more driving cycles in this driving pattern.

4.

Check the readiness code using Subaru Select Monitor, confirm that the diagnosis is completed, and end the procedure. TRANSMISSION (DIAGNOSTICS)>All Readiness Diagnostic Code(s)

4. INSPECTION MODE C

DTC | Item | Condition
P0500 | VEHICLE SPEED SENSOR "A" CIRCUIT | —
P0716 | INPUT/TURBINE SHAFT SPEED SENSOR "A" CIRCUIT RANGE/PERFORMANCE | —
P0717 | INPUT/TURBINE SHAFT SPEED SENSOR "A" CIRCUIT NO SIGNAL | —
P0961 | PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT RANGE/PERFORMANCE | —
P0965 | PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT RANGE/PERFORMANCE | —
P0970 | PRESSURE CONTROL SOLENOID "C" CONTROL CIRCUIT LOW | —
P0971 | PRESSURE CONTROL SOLENOID "C" CONTROL CIRCUIT HIGH | —
P0973 | SHIFT SOLENOID "A" CONTROL CIRCUIT LOW | —
P0976 | SHIFT SOLENOID "B" CONTROL CIRCUIT LOW | —
P2746 | INTERMEDIATE SHAFT SPEED SENSOR "B" CIRCUIT RANGE/PERFORMANCE | —
P2747 | INTERMEDIATE SHAFT SPEED SENSOR "B" CIRCUIT NO SIGNAL | —
P2750 | INTERMEDIATE SHAFT SPEED SENSOR "C" CIRCUIT RANGE/PERFORMANCE | —
P2751 | INTERMEDIATE SHAFT SPEED SENSOR "C" CIRCUIT NO SIGNAL | —
P2763 | TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT HIGH | After inspection mode A is done, perform inspection mode C
P2764 | TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT LOW | —

Diagnostic procedure:

1.

Start the engine.

2.

Check the readiness code using Subaru Select Monitor and confirm that the diagnosis is not completed. TRANSMISSION (DIAGNOSTICS)>All Readiness Diagnostic Code(s)

3.

Accelerate slowly to a legal speed, and then decelerate slowly to a stop.

4.

Check the readiness code using Subaru Select Monitor, confirm that the diagnosis is completed, and end the procedure. TRANSMISSION (DIAGNOSTICS)>All Readiness Diagnostic Code(s)

5. INSPECTION MODE D

DTC | Item | Condition
P0713 | TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT HIGH | —
P0730 | INCORRECT GEAR RATIO | —
P0746 | PRESSURE CONTROL SOLENOID "A" PERFORMANCE/STUCK OFF | —
P0747 | PRESSURE CONTROL SOLENOID "A" STUCK ON | —
P0751 | SHIFT SOLENOID "A" PERFORMANCE/STUCK OFF | Perform inspection mode D twice
P0752 | SHIFT SOLENOID "A" STUCK ON | Perform inspection mode D twice
P0756 | SHIFT SOLENOID "B" PERFORMANCE/STUCK OFF | Perform inspection mode D twice
P0757 | SHIFT SOLENOID "B" STUCK ON | Perform inspection mode D twice
P0776 | PRESSURE CONTROL SOLENOID "B" PERFORMANCE/STUCK OFF | Perform inspection mode D twice
P0867 | TRANSMISSION FLUID PRESSURE | —
P2757 | TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT PERFORMANCE/STUCK OFF | Perform inspection mode D twice
P2758 | TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT STUCK ON | Perform inspection mode D twice

Diagnostic procedure:

1.

Start the engine.

2.

Check the readiness code using Subaru Select Monitor and confirm that the diagnosis is not completed. TRANSMISSION (DIAGNOSTICS)>All Readiness Diagnostic Code(s)

3.

Drive in any driving pattern for 20 minutes. (Include driving at a constant legal speed (for 20 seconds) at least once.)

4.

Check the readiness code using Subaru Select Monitor, confirm that the diagnosis is completed, and end the procedure. TRANSMISSION (DIAGNOSTICS)>All Readiness Diagnostic Code(s)

6. INSPECTION MODE E

DTC | Item | Condition
P0801 | REVERSE INHIBIT CONTROL CIRCUIT/OPEN | —
P0841 | TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT RANGE/PERFORMANCE | Perform inspection mode E three times
P0974 | SHIFT SOLENOID "A" CONTROL CIRCUIT HIGH | —
P0977 | SHIFT SOLENOID "B" CONTROL CIRCUIT HIGH | —
P162B | WARNING INDICATOR REQUEST | —
U0073 | CONTROL MODULE COMMUNICATION BUS OFF | —
U0100 | LOST COMMUNICATION WITH ECM/PCM "A" | —
U0122 | LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE | —
U0128 | LOST COMMUNICATION WITH PARK BRAKE CONTROL MODULE | —
U0131 | LOST COMMUNICATION WITH POWER STEERING CONTROL MODULE | —
U0140 | LOST COMMUNICATION WITH BODY CONTROL MODULE | —
U0155 | LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE | —
U0164 | LOST COMMUNICATION WITH HVAC CONTROL MODULE | —
U0401 | INVALID DATA RECEIVED FROM ECM/PCM "A" | —
U0416 | INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE | —
U0417 | INVALID DATA RECEIVED FROM PARK BRAKE CONTROL MODULE | —
U0420 | INVALID DATA RECEIVED FROM POWER STEERING CONTROL MODULE | —
U0422 | INVALID DATA RECEIVED FROM BODY CONTROL MODULE | —
U0423 | INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE | —
U0424 | INVALID DATA RECEIVED FROM HVAC CONTROL MODULE | —
U1235 | LOST COMMUNICATION WITH EyeSight | —
U1433 | INVALID DATA RECEIVED FROM EyeSight | —

Diagnostic procedure:

1.

Check the readiness code using Subaru Select Monitor and confirm that the diagnosis is not completed. TRANSMISSION (DIAGNOSTICS)>All Readiness Diagnostic Code(s)

2.

Start the engine.

3.

Check the readiness code using Subaru Select Monitor, confirm that the diagnosis is completed, and end the procedure. TRANSMISSION (DIAGNOSTICS)>All Readiness Diagnostic Code(s)

7. INSPECTION MODE F

DTC | Item | Condition
P0708 | TRANSMISSION RANGE SENSOR "A" CIRCUIT HIGH | —
P1603 | ENGINE STALL HISTORY | —

Diagnostic procedure:

1.

Start the engine.

2.

Check the readiness code using Subaru Select Monitor and confirm that the diagnosis is not completed. TRANSMISSION (DIAGNOSTICS)>All Readiness Diagnostic Code(s)

3.

Depress the brake pedal and move the select lever to each range at an interval of five seconds.

Move the select lever in the following order: “P” → “R” → “N” → “D”.

4.

Drive for three seconds at 16 km/h (10 MPH).

Drive in “D” range and “R” range.

5.

Check the readiness code using Subaru Select Monitor, confirm that the diagnosis is completed, and end the procedure. TRANSMISSION (DIAGNOSTICS)>All Readiness Diagnostic Code(s)

8. INSPECTION MODE G

DTC | Item | Condition
P0719 | BRAKE SWITCH "B" CIRCUIT LOW | —
P0724 | BRAKE SWITCH "B" CIRCUIT HIGH | —
P0951 | AUTO SHIFT MANUAL CONTROL CIRCUIT RANGE/PERFORMANCE | —
P170A | L-RANGE SWITCH | —

Diagnostic procedure:

1.

Start the engine.

2.

Check the readiness code using Subaru Select Monitor and confirm that the diagnosis is not completed. TRANSMISSION (DIAGNOSTICS)>All Readiness Diagnostic Code(s)

3.

Operate the stop light switch or the manual mode switch.

Drive in “D” range and “R” range.

4.

Read the data of the stop light switch or the manual mode switch using the Subaru Select Monitor. Or measure the terminal voltage.

5.

Check the readiness code using Subaru Select Monitor, confirm that the diagnosis is completed, and end the procedure. TRANSMISSION (DIAGNOSTICS)>All Readiness Diagnostic Code(s)

9. INSPECTION MODE H

DTC | Item | Condition
P2797 | ELECTRIC/AUXILIARY TRANSMISSION FLUID PUMP "A" PERFORMANCE/STUCK OFF | —

Diagnostic procedure:

1.

Start the engine with the select lever in “N” or “P” range.

2.

Set ATF temperature to 60 — 80°C (140 — 176°F).

Check the ATF temperature using the Subaru Select Monitor.

3.

Stop the engine and leave it for three minutes or more.

4.

Turn the ignition switch to ON (engine OFF).

5.

Using the Subaru Select Monitor, read and record the value in [secondary pressure sensor voltage.]. TRANSMISSION (DIAGNOSTICS)>Data Monitor

This voltage is “A”.

6.

Start the engine.

7.

Shift the select lever to “D” range and set the vehicle to the Auto Start Stop status by Auto Start Stop function.

At this time, check that the engine is stopped, securely make sure that the electric oil pump is rotating with operating sound.

8.

After stopping the engine, leave it for five seconds or more, read [secondary pressure sensor voltage.] using the Subaru Select Monitor during Auto Start Stop and record it when the hydraulic pressure stabilizes. TRANSMISSION (DIAGNOSTICS)>Data Monitor

This voltage is “B”.

9.

Calculate the voltage difference between the A/D value measured when the electric pump is in operation and the one measured when in halt condition.

Voltage difference (V): 0.045 V or more

V = B − A

TRANSMISSION (DIAGNOSTICS) > Warning Light Illumination Pattern
INSPECTION

(1) | AT OIL TEMP light | (2) | AWD light |  |

- The AT OIL TEMP light illuminates or blinks, when the ATF temperature is high and malfunction occurs in CVT.

- AWD light illuminates or blinks, when the AWD is in special control condition and AWD has malfunction.

TRANSMISSION (DIAGNOSTICS) > Warning Light Illumination Pattern
AT OIL TEMP WARNING LIGHT DISPLAY
1. INSPECTION

- At normal condition

  After turning the ignition switch to ON, illuminates for 2 seconds then goes off.

- When ATF temperature is high

  AT OIL TEMP light illuminates when the ATF temperature is abnormally high with the ignition switch ON.

- When malfunction is detected

  AT OIL TEMP light blinks at 2 Hz when the TCM detects the malfunction of CVT with the ignition switch ON. In this case, inspect using “Diagnostic Procedure with Diagnostic Trouble Code (DTC)”. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)

- When AT learning is not finished

  AT OIL TEMP light repeats “Blinking at 4 Hz → Turning OFF” when the AT learning is not completed with the ignition switch ON. In this case, perform the “Learning”. TRANSMISSION (DIAGNOSTICS)>Learning Control

(A) | Ignition switch condition |  |
(1) | At normal condition | (3) | When malfunction is detected | (4) | When AT learning is not finished
(2) | When ATF temperature is high |  |  |  |

If the AT OIL TEMP light does not illuminate, or illumination patterns are not as above, check the AT OIL TEMP light circuit.

2. DIAGNOSIS

Detecting condition:

- CAN communication is lost with the combination meter.

- Combination meter malfunction

- TCM is in special control mode.

- AT learning is not finished.

Trouble symptom:

- When the ignition switch is turned to ON, the AT OIL TEMP light does not illuminate.

- AT OIL TEMP light remains lit after engine start.

1. CHECK DTC.
yes

Perform the instructed procedures.

no

2

2. CHECK DTC.
yes

Perform the instructed procedures.

no

3

3. CHECK COMBINATION METER.
yes

Perform the instructed procedures.

no

4

4. CHECK AT OIL TEMP LIGHT.
no

Perform the instructed procedures.

yes
5. CHECK AT OIL TEMP LIGHT.
yes

Perform the instructed procedures.

no

6

6. CHECK DTC.
yes

Perform the instructed procedures.

no

7

7. CHECK TCM.
no

Perform the instructed procedures.

yes
8. CHECK TCM.
no

Perform the instructed procedures.

yes
9. CHECK ATF TEMPERATURE.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC of [Transmission] using the Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC U0155 or U0423 displayed?

Perform the self-diagnosis of combination meter. INSTRUMENTATION/DRIVER INFO>Combination Meter System>OPERATION > SELF-DIAGNOSIS DISPLAY MODE

2

2. CHECK DTC.

Read the DTC of [Transmission] using the Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are DTCs other than U0155 and U0423 displayed?

Perform the diagnosis according to the DTC. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

3

3. CHECK COMBINATION METER.

Read the DTC of [Combination Meter] using the Subaru Select Monitor. COMBINATION METER (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are any DTCs displayed?

Perform the diagnosis according to the DTC. COMBINATION METER (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

4

4. CHECK AT OIL TEMP LIGHT.

Turn the ignition switch to ON.

Does AT OIL TEMP light illuminate and then go off in 2 seconds?

5

Perform the self-diagnosis of combination meter. INSTRUMENTATION/DRIVER INFO>Combination Meter System>OPERATION > SELF-DIAGNOSIS DISPLAY MODE

5. CHECK AT OIL TEMP LIGHT.

Start the engine.

Does the AT OIL TEMP light go off?

Current condition is normal. Go back to Basic Diagnostic Procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

6

6. CHECK DTC.

Read the DTC of [Transmission] using the Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are any DTCs displayed?

Perform the diagnosis according to the DTC. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

7

7. CHECK TCM.

Read the data of [ATF Temperature Lamp] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is “ON” displayed?

8

Perform the self-diagnosis of combination meter. INSTRUMENTATION/DRIVER INFO>Combination Meter System>OPERATION > SELF-DIAGNOSIS DISPLAY MODE

8. CHECK TCM.

Read the data of [ATF Temp.] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is the display 130°C or more?

9

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

9. CHECK ATF TEMPERATURE.

Check the real fluid temperature from the transmission case surface temperature.

Does it clearly differ from the [ATF Temp.] displayed on Subaru Select Monitor?

Perform the diagnosis according to DTC P0712. If there is no problem, perform the diagnosis according to DTC P0713.

When ATF temperature can be judged as actually high, perform the diagnosis again after the ATF temperature lowers.

TRANSMISSION (DIAGNOSTICS) > Warning Light Illumination Pattern
AWD WARNING LIGHT DISPLAY
1. INSPECTION

- At normal condition

  After turning the ignition switch to ON, illuminates for 2 seconds then goes off.

- When FF mode is selected

  AWD light illuminates when the AWD ON/OFF switching function is set to “FF mode” with the ignition switch ON.

- When malfunction is detected

  AWD light blinks at 2 Hz when any of the following malfunctions are detected with the ignition switch ON.

  1. When tire with different diameter is installed, or air pressure of any of four wheels is excessively low.

  2. NG judgment for [Rear differential inspection mode]DIFFERENTIALS>Rear Differential Inspection Mode

(A) | Ignition switch condition |  |
(1) | At normal condition | (2) | When FF mode is selected | (3) | When malfunction is detected

If the AWD light does not illuminate, or illumination patterns are not as above, check the AWD light circuit.

2. DIAGNOSIS

Detecting condition:

- CAN communication is lost with the combination meter.

- Combination meter malfunction

- TCM is in AWD special control mode.

Trouble symptom:

- When the ignition switch is turned to ON, the AWD light does not illuminate.

- AWD light remains lit after engine start.

- AWD light is blinking immediately after engine start.

1. CHECK TCM.
yes

Perform the instructed procedures.

no

2

2. CHECK TCM.
yes

Perform the instructed procedures.

no

3

3. CHECK COMBINATION METER.
yes

Perform the instructed procedures.

no

4

4. CHECK AWD LIGHT.
no

Perform the instructed procedures.

yes
5. CHECK AWD LIGHT.
yes

Perform the instructed procedures.

no

6

6. CHECK DTC.
yes

Perform the instructed procedures.

no

7

7. CHECK AWD LIGHT.
yes

9

no

8

8. CHECK AWD LIGHT.
yes

10

no

11

9. CHECK AWD ON/OFF SWITCHING FUNCTION.
yes

11

no

Perform the instructed procedures.

10. CHECK REAR DIFFERENTIAL.
yes

Perform the instructed procedures.

no

11

11. CHECK COMBINATION METER.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK TCM.

Read the DTC of [Transmission] using the Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC U0155 or U0423 displayed?

Perform the self-diagnosis of combination meter. INSTRUMENTATION/DRIVER INFO>Combination Meter System>OPERATION > SELF-DIAGNOSIS DISPLAY MODE

2

2. CHECK TCM.

Read the DTC of [Transmission] using the Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are DTCs other than U0155 and U0423 displayed?

Perform the diagnosis according to the DTC. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

3

3. CHECK COMBINATION METER.

Read the DTC of [Combination Meter] using the Subaru Select Monitor. COMBINATION METER (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are any DTCs displayed?

Perform the diagnosis according to the DTC. COMBINATION METER (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

4

4. CHECK AWD LIGHT.

Turn the ignition switch to ON.

Does AWD light illuminate and then go off in 2 seconds?

5

Perform the self-diagnosis of combination meter. INSTRUMENTATION/DRIVER INFO>Combination Meter System>OPERATION > SELF-DIAGNOSIS DISPLAY MODE

5. CHECK AWD LIGHT.

Start the engine.

Does the AWD light go off?

Current condition is normal. Go back to Basic Diagnostic Procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

6

6. CHECK DTC.

Read the DTC of [Transmission] using the Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are any DTCs displayed?

Perform the diagnosis according to the DTC. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

7

7. CHECK AWD LIGHT.

Check the display of AWD light after engine start.

Is AWD light illuminating?

9

8

8. CHECK AWD LIGHT.

Check the display of AWD light after engine start.

Is AWD light blinking at 2 Hz?

10

11

9. CHECK AWD ON/OFF SWITCHING FUNCTION.

Using the Subaru Select Monitor, select [AWD ON/OFF switching mode] on the [Work Support] screen, and check the current mode. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>AWD ON/OFF Switching Mode

Is the message [At present, the vehicle is in AWD. Switch to FF?] displayed?

11

If the message [At present, the vehicle is in FF. Switch to AWD?] is displayed, select “OK”, and switch to AWD mode.

10. CHECK REAR DIFFERENTIAL.

Using the Subaru Select Monitor, select and check [Rear differential inspection mode] on the [Work Support] display. DIFFERENTIALS>Rear Differential Inspection Mode

Does AWD light go off after inspection is finished normally?

Current condition is normal. Go back to Basic Diagnostic Procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

11

11. CHECK COMBINATION METER.

Perform the self-diagnosis of combination meter. INSTRUMENTATION/DRIVER INFO>Combination Meter System>OPERATION > SELF-DIAGNOSIS DISPLAY MODE

Is the check result OK?

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

Repair or replace the combination meter. INSTRUMENTATION/DRIVER INFO>Combination Meter

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure for Subaru Select Monitor Communication
INSPECTION

Detecting condition:

- Defective harness connector

- Defective TCM

Trouble symptom:

Subaru Select Monitor communication failure

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

Use the check board when measuring the TCM terminal voltage and resistance.

1. CHECK IGNITION SWITCH.

Is the ignition switch ON?

2

Turn the ignition switch to ON, and select the [Transmission] using the Subaru Select Monitor.

2. CHECK BATTERY.
1.

Turn the ignition switch to OFF.

2.

Measure the battery voltage.

Is the voltage 11 V or more?

3

Charge or replace the battery.

3. CHECK BATTERY TERMINAL.

Is there poor contact at battery terminal?

Replace or tighten the battery terminal.

4

4. CHECK INSTALLATION OF TCM CONNECTOR.

Turn the ignition switch to OFF.

Is the TCM connector inserted into the TCM until the clamp locks?

5

Insert the TCM connector to TCM.

5. CHECK LAN SYSTEM.

Check the LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

Is the check result OK?

6

Perform the diagnosis for LAN system.

6. CHECK SUBARU SELECT MONITOR COMMUNICATION.
1.

Turn the ignition switch to ON.

2.

Check whether communication to transmission system can be executed normally.

Is the [Select Function] screen displayed?

Check DTC of TCM. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

7

7. CHECK POWER SUPPLY CIRCUIT.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Turn the ignition switch to ON. (Engine OFF)

4.

Measure the ignition power supply voltage between TCM connector and chassis ground.

Connector & terminal

(T10) No. 8 (+) — Chassis ground (−):

(T10) No. 24 (+) — Chassis ground (−):

(T10) No. 34 (+) — Chassis ground (−):

(T10) No. 40 (+) — Chassis ground (−):

(T10) No. 41 (+) — Chassis ground (−):

Is the voltage 10 — 13 V?

8

Repair the open circuit of harness between TCM and battery.

8. CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND.
1.

Turn the ignition switch to OFF.

2.

Measure the resistance of harness between TCM connector and chassis ground.

Connector & terminal

(T10) No. 26 — Chassis ground:

(T10) No. 42 — Chassis ground:

Is the resistance less than 10 Ω?

9

Repair the open circuit of the TCM ground circuit and poor contact of connector.

9. CHECK POOR CONTACT OF CONNECTOR.

Is there poor contact of control module power supply, ground circuit and data link connector?

Repair the connector.

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

TRANSMISSION (DIAGNOSTICS) > Data Monitor
OPERATION

- For detailed operation procedures, refer to “Common (Diagnostics)”. COMMON(diag)>Diagnostic Trouble Code (DTC)

- For details on the data monitor, refer to the list. TRANSMISSION (DIAGNOSTICS)>Data Monitor>LIST

TRANSMISSION (DIAGNOSTICS) > Data Monitor
LIST

Item | Contents | Unit of measure
Engine Speed | Engine speed signal transmitted from the ECM. Calculated from crankshaft position sensor signal. TCM input value. | rpm
Turbine Revolution Speed | Turbine rotation speed calculated by the TCM using signals from the turbine speed sensor. | rpm
Accel. Opening Angle | Accelerator pedal opening angle transmitted from the ECM. Value calculated from the accelerator pedal position sensor output. TCM input value. | %
Front Wheel Speed | Front wheel speed calculated from the secondary axis rotation speed. | km/h or MPH
ATF Temp. | Value calculated from the ATF temperature sensor output value. ATF temperature of the control valve section. | °C or °F
Lock Up Duty Ratio | Lock-up duty solenoid control duty ratio. TCM output value. | %
Transfer Duty Ratio | Transfer duty solenoid control duty ratio. TCM output value. | %
Actual Gear Ratio | Current gear ratio (rotation ratio of the pulley) calculated from the primary pulley axis rotation speed and the secondary pulley axis rotation speed. | —
Primary Rev Speed | Primary pulley rotation speed calculated by the TCM using signals from the primary speed sensor. | rpm
Secondary Rev Speed | Secondary pulley rotation speed calculated by the TCM using signals from the secondary speed sensor. | rpm
Stop Light Switch | Stop light SW signal. Set to ON when the brake pedal is depressed. TCM input value. | ON or OFF
Secondary Set Current | Value of the indicator current for controlling the secondary solenoid calculated by the TCM. | mA
Secondary Actual Current | Actual current value of the secondary solenoid. TCM output value. | mA
Commanded Forward & Reverse Linear Solenoid Current | Value of the indicator current for controlling the F&R linear solenoid calculated by the TCM. | mA
Actual Forward & Reverse Linear Solenoid Current | Actual current value of the F&R linear solenoid. TCM output value. | mA
Control module voltage | Battery voltage. TCM input value. | V
Primary UP Duty | Primary UP solenoid control duty ratio. TCM output value. | %
Primary DOWN Duty | Primary DOWN solenoid control duty ratio. TCM output value. | %
P Range | Inhibitor SW signal. Set to ON when the select lever is in P range. TCM input value. | ON or OFF
R Range Signal | Inhibitor SW signal. Set to ON when the select lever is in R range. TCM input value. | ON or OFF
N Range | Inhibitor SW signal. Set to ON when the select lever is in N range. TCM input value. | ON or OFF
D Range Signal | Inhibitor SW signal. Set to ON when the select lever is in D range. TCM input value. | ON or OFF
L-range | L range signal. Set to ON when the select lever is in the L range gate. TCM input value. | ON or OFF
X mode | ON/OFF status of the X mode received from the engine. TCM input value. (Model with X mode) | ON or OFF
Shift Step in Manual Mode | Gear shift position in manual mode or in multi-stage shifting mode. TCM output value. | —
Tiptronic Mode Switch | Manual mode SW signal. Set to ON when the select lever is in the manual shift gate. TCM input value. | ON or OFF
Up Switch | Status of the paddle shift up SW. Set to ON when the plus (+) side of the steering wheel paddle shift is pulled. TCM input value. | ON or OFF
Down Switch | Status of the paddle shift down SW. Set to ON when the minus (−) side of the steering wheel paddle shift is pulled. TCM input value. | ON or OFF
Electric Fluid Pump System status | Electric oil pump condition. TCM input value. | Normal or Abnormal
Electric fluid pump indication duty | Set duty ratio to electric oil pump. TCM input value. | %
Emphasized idle stop request | Auto Start Stop prohibited condition by the TCM. Prohibited when the Auto Start Stop is not possible under a specific condition. TCM output value. | Not Permit or Permit
Electric Fluid Pump Relay | Electric oil pump relay ON/ OFF condition. Set to ON when the electric oil pump is activated during Auto Start Stop operation. TCM input value. | ON or OFF
secondary pressure sensor voltage. | Voltage value after an analog/digital conversion is done inside the TCM using the signal input from the secondary pressure sensor. TCM input value. | V
ATF Temp sensor voltage. | Sensor voltage value input from the ATF temperature sensor to the TCM. TCM input value. | V
Diagnosis Lamp | Transmission failure detection status. Set to ON when a failure is detected. AT oil temperature warning light blinks at 2 Hz. TCM output value. | ON or OFF
ATF Temperature Lamp | ATF high temperature detection status. Set to ON when high temperature is detected. ATF temperature warning light illuminates. TCM output value. | ON or OFF
AT learning | AT initial learning completion status. AT oil temperature warning light blinks at 4 Hz when the learning is not completed. TCM output value. | Completed or not completed
Trip Count | Number of times the ignition is turned ON since the vehicle was manufactured. | time
Count | Shows whether the elapsed time counter after turning ON the ignition switch is synchronized with the integrated unit (master unit) or an original counter. “Common” means the integrated unit, and “Originally” means that the original counter is used. | —
Time Count | Shows the elapsed time after turning ON the ignition. | ms
Actual Secondary Pressure | Pressure value applied to the secondary pulley cylinder (line pressure) detected by the secondary pressure sensor. | MPa
System Voltage | Power supply voltage supplied to the backup power supply (≈ battery voltage). | V

TRANSMISSION (DIAGNOSTICS) > Freeze Frame Data
OPERATION

- For detailed operation procedures, refer to “Common (Diagnostics)”. COMMON(diag)>Diagnostic Trouble Code (DTC)

- For details on freeze frame data, refer to the list. TRANSMISSION (DIAGNOSTICS)>Freeze Frame Data>LIST

TRANSMISSION (DIAGNOSTICS) > Freeze Frame Data
LIST

Item | Contents | Unit of measure
Engine Speed | Engine speed signal transmitted from the ECM. Calculated from crankshaft position sensor signal. TCM input value. | rpm
Turbine Revolution Speed | Turbine rotation speed calculated by the TCM using signals from the turbine speed sensor. | rpm
Accel. Opening Angle | Accelerator pedal opening angle transmitted from the ECM. Value calculated from the accelerator pedal position sensor output. TCM input value. | %
Front Wheel Speed | Front wheel speed calculated from the secondary axis rotation speed. | km/h or MPH
ATF Temp. | Value calculated from the ATF temperature sensor output value. ATF temperature of the control valve section. | °C or °F
Lock Up Duty Ratio | Lock-up duty solenoid control duty ratio. TCM output value. | %
Transfer Duty Ratio | Transfer duty solenoid control duty ratio. TCM output value. | %
Actual Gear Ratio | Current gear ratio (rotation ratio of the pulley) calculated from the primary pulley axis rotation speed and the secondary pulley axis rotation speed. | —
Primary Rev Speed | Primary pulley rotation speed calculated by the TCM using signals from the primary speed sensor. | rpm
Secondary Rev Speed | Secondary pulley rotation speed calculated by the TCM using signals from the secondary speed sensor. | rpm
Stop Light Switch | Stop light SW signal. Set to ON when the brake pedal is depressed. TCM input value. | ON or OFF
Secondary Set Current | Value of the indicator current for controlling the secondary solenoid calculated by the TCM. | mA
Secondary Actual Current | Actual current value of the secondary solenoid. TCM output value. | mA
Commanded Forward & Reverse Linear Solenoid Current | Value of the indicator current for controlling the F&R linear solenoid calculated by the TCM. | mA
Actual Forward & Reverse Linear Solenoid Current | Actual current value of the F&R linear solenoid. TCM output value. | mA
Control module voltage | Battery voltage. TCM input value. | V
Primary UP Duty | Primary UP solenoid control duty ratio. TCM output value. | %
Primary DOWN Duty | Primary DOWN solenoid control duty ratio. TCM output value. | %
P Range | Inhibitor SW signal. Set to ON when the select lever is in P range. TCM input value. | ON or OFF
R Range Signal | Inhibitor SW signal. Set to ON when the select lever is in R range. TCM input value. | ON or OFF
N Range | Inhibitor SW signal. Set to ON when the select lever is in N range. TCM input value. | ON or OFF
D Range Signal | Inhibitor SW signal. Set to ON when the select lever is in D range. TCM input value. | ON or OFF
L-range | L range signal. Set to ON when the select lever is in the L range gate. TCM input value. | ON or OFF
X mode | ON/OFF status of the X mode received from the engine. TCM input value. (Model with X mode) | ON or OFF
Shift Step in Manual Mode | Gear shift position in manual mode or in multi-stage shifting mode. TCM output value. | —
Tiptronic Mode Switch | Manual mode SW signal. Set to ON when the select lever is in the manual shift gate. TCM input value. | ON or OFF
Up Switch | Status of the paddle shift up SW. Set to ON when the plus (+) side of the steering wheel paddle shift is pulled. TCM input value. | ON or OFF
Down Switch | Status of the paddle shift down SW. Set to ON when the minus (−) side of the steering wheel paddle shift is pulled. TCM input value. | ON or OFF
Electric Fluid Pump System status | Electric oil pump condition. TCM input value. | Normal or Abnormal
Electric fluid pump indication duty | Set duty ratio to electric oil pump. TCM input value. | %
Emphasized idle stop request | Auto Start Stop prohibited condition by the TCM. Prohibited when the Auto Start Stop is not possible under a specific condition. TCM output value. | Not Permit or Permit
Electric Fluid Pump Relay | Electric oil pump relay ON/ OFF condition. Set to ON when the electric oil pump is activated during Auto Start Stop operation. TCM input value. | ON or OFF
secondary pressure sensor voltage. | Voltage value after an analog/digital conversion is done inside the TCM using the signal input from the secondary pressure sensor. | V
ATF Temp sensor voltage. | Sensor voltage value input from the ATF temperature sensor to the TCM. TCM input value. | V
Diagnosis Lamp | Transmission failure detection status. Set to ON when a failure is detected. AT oil temperature warning light blinks at 2 Hz. TCM output value. | ON or OFF
ATF Temperature Lamp | ATF high temperature detection status. Set to ON when high temperature is detected. ATF temperature warning light illuminates. TCM output value. | ON or OFF
Trip Count | Number of times the ignition is turned ON since the vehicle was manufactured. | time
Count | Shows whether the elapsed time counter after turning ON the ignition switch is synchronized with the integrated unit (master unit) or an original counter. “Common” means the integrated unit, and “Originally” means that the original counter is used. | —
Time Count | Shows the elapsed time after turning ON the ignition. | ms
Actual Secondary Pressure | Pressure value applied to the secondary pulley cylinder (line pressure) detected by the secondary pressure sensor. | MPa
System Voltage | Power supply voltage supplied to the backup power supply (≈ battery voltage). | V

TRANSMISSION (DIAGNOSTICS) > Active Test
OPERATION

- Be sure to perform the active test while the engine is not running.

- After executing the [Active Test], make sure to clear memory. COMMON(diag)>Clear memory

1.

On [Start] screen, select [Diagnosis].

2.

On [Vehicle selection] screen, enter vehicle information and select [OK].

3.

On [Main Menu] screen, select [Each System].

4.

On [Select System] screen, select [Transmission].

5.

On [Select Function] screen, select [Active Test].

TRANSMISSION (DIAGNOSTICS) > Active Test
LIST

Item | Contents | Unit used in operation | Execution condition
F&R Clutch Solenoid | Forcibly operate the F&R clutch solenoid that controls engagement/disengagement states of the forward/reverse clutches. Check if it operates normally by listening to the operating sound. | 100 mA | When all of the following conditions are met: P range Ignition switch is ON (engine stops) Battery voltage 10.9 V or more Auto Start Stop is not operating.
Secondary Solenoid | Forcibly operate the secondary solenoid that controls the pressure (line pressure) applied to the secondary pulley cylinder. Check if it operates normally by listening to the clicking sound. | 100 mA
Primary Down Solenoid | Forcibly operate the primary DOWN solenoid that controls the pressure applied to the primary pulley cylinder to the decrease side. Check if it operates normally by listening to the clicking sound. | 10%
Primary Up Solenoid | Forcibly operate the primary UP solenoid that controls the pressure applied to the primary pulley cylinder to the increase side. Check if it operates normally by listening to the clicking sound. | 10%
AWD Solenoid | Forcibly operate the AWD solenoid that controls engagement/disengagement states of the transfer clutch. Check if it operates normally by listening to the operating sound. | 10%
Lock-Up Duty Solenoid | Forcibly operate the lockup duty solenoid that controls engagement/disengagement states of the lockup clutch. Check if it operates normally by listening to the clicking sound. | 10%

TRANSMISSION (DIAGNOSTICS) > Learning Control
GENERAL DESCRIPTION

- Follow the messages displayed on the Subaru Select Monitor when working.

- When the following work is performed, perform learning work for the transmission.

  Replacement of TCM/Replacement or disassembly of transmission assembly/Replacement of control valve body/Clearing AT leaning value is executed.

TRANSMISSION (DIAGNOSTICS) > Learning Control
PROCEDURE

Refer to CONTINUOUSLY VARIABLE TRANSMISSION. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>AT learning

TRANSMISSION (DIAGNOSTICS) > All Readiness Diagnostic Code(s)
OPERATION

- The readiness code shows self-diagnosis status of each DTC. The DTCs displayed here are either not yet self-diagnosed or self-diagnosed but not completed. After the self-diagnosis is complete, DTC will no longer be displayed regardless of the diagnostic result.

- Self-diagnosis is executed every time when the ignition switch is turned to ON. Therefore, even after the self-diagnosis is complete and nothing is displayed on the readiness code display, if you turn the ignition switch to ON again after turning it OFF, some DTCs may be displayed on the readiness code display.

- After you repair a DTC and perform the inspection mode, use the readiness code to check if the self-diagnosis of the DTC is completed. If the concerned DTC is displayed, the self-diagnosis of the DTC is not complete. Perform the inspection mode again.

- For detailed operation procedures, refer to “Help” of application.

1.

On [Start] screen, select [Diagnosis].

2.

On [Vehicle selection] screen, enter vehicle information and select [OK].

3.

On [Main Menu] screen, select [Each System].

4.

On [Select System] screen, select [Transmission], and then select [Next].

5.

On [Select Function] screen, select [DTC].

6.

On [DTC] screen, select [All Readiness Diagnostic Code(s)].

TRANSMISSION (DIAGNOSTICS) > Diagnostic Trouble Code (DTC)
OPERATION

- For detailed operation procedures, refer to “Common (Diagnostics)”. COMMON(diag)>Diagnostic Trouble Code (DTC)

- For details on DTCs, refer to the list. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

TRANSMISSION (DIAGNOSTICS) > Diagnostic Trouble Code (DTC)
LIST

For DTC related to Auto Start Stop, refer to Auto Start Stop (DIAGNOSTICS). AUTO START STOP (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

Code | Item | Reference
P0500 | VEHICLE SPEED SENSOR "A" CIRCUIT | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0500 VEHICLE SPEED SENSOR "A" CIRCUIT
P0604 | INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0604 INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR
P0605 | INTERNAL CONTROL MODULE READ ONLY MEMORY (ROM) ERROR | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0605 INTERNAL CONTROL MODULE READ ONLY MEMORY (ROM) ERROR
P0613 | TCM PROCESSOR | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0613 TCM PROCESSOR
P062F | INTERNAL CONTROL MODULE EEPROM ERROR | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P062F INTERNAL CONTROL MODULE EEPROM ERROR
P0705 | TRANSMISSION RANGE SENSOR "A" CIRCUIT (PRNDL INPUT) | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0705 TRANSMISSION RANGE SENSOR "A" CIRCUIT (PRNDL INPUT)
P0708 | TRANSMISSION RANGE SENSOR "A" CIRCUIT HIGH | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0708 TRANSMISSION RANGE SENSOR "A" CIRCUIT HIGH
P0711 | TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT RANGE/PERFORMANCE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0711 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT RANGE/PERFORMANCE
P0712 | TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT LOW | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0712 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT LOW
P0713 | TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT HIGH | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0713 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT HIGH
P0716 | INPUT/TURBINE SHAFT SPEED SENSOR "A" CIRCUIT RANGE/PERFORMANCE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0716 INPUT/TURBINE SHAFT SPEED SENSOR "A" CIRCUIT RANGE/PERFORMANCE
P0717 | INPUT/TURBINE SHAFT SPEED SENSOR "A" CIRCUIT NO SIGNAL | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0717 INPUT/TURBINE SHAFT SPEED SENSOR "A" CIRCUIT NO SIGNAL
P0719 | BRAKE SWITCH "B" CIRCUIT LOW | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0719 BRAKE SWITCH "B" CIRCUIT LOW
P0724 | BRAKE SWITCH "B" CIRCUIT HIGH | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0724 BRAKE SWITCH "B" CIRCUIT HIGH
P0730 | INCORRECT GEAR RATIO | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0730 INCORRECT GEAR RATIO
P0746 | PRESSURE CONTROL SOLENOID "A" PERFORMANCE/STUCK OFF | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0746 PRESSURE CONTROL SOLENOID "A" PERFORMANCE/STUCK OFF
P0747 | PRESSURE CONTROL SOLENOID "A" STUCK ON | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0747 PRESSURE CONTROL SOLENOID "A" STUCK ON
P0751 | SHIFT SOLENOID "A" PERFORMANCE/STUCK OFF | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0751 SHIFT SOLENOID "A" PERFORMANCE/STUCK OFF
P0752 | SHIFT SOLENOID "A" STUCK ON | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0752 SHIFT SOLENOID "A" STUCK ON
P0756 | SHIFT SOLENOID "B" PERFORMANCE/STUCK OFF | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0756 SHIFT SOLENOID "B" PERFORMANCE/STUCK OFF
P0757 | SHIFT SOLENOID "B" STUCK ON | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0757 SHIFT SOLENOID "B" STUCK ON
P0776 | PRESSURE CONTROL SOLENOID "B" PERFORMANCE/STUCK OFF | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0776 PRESSURE CONTROL SOLENOID "B" PERFORMANCE/STUCK OFF
P0801 | REVERSE INHIBIT CONTROL CIRCUIT/OPEN | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0801 REVERSE INHIBIT CONTROL CIRCUIT/OPEN
P0841 | TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT RANGE/PERFORMANCE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0841 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT RANGE/PERFORMANCE
P0842 | TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT LOW | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0842 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT LOW
P0843 | TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT HIGH | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0843 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT HIGH
P0867 | TRANSMISSION FLUID PRESSURE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0867 TRANSMISSION FLUID PRESSURE
P0890 | TCM POWER RELAY SENSE CIRCUIT LOW | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0890 TCM POWER RELAY SENSE CIRCUIT LOW
P0951 | AUTO SHIFT MANUAL CONTROL CIRCUIT RANGE/PERFORMANCE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0951 AUTO SHIFT MANUAL CONTROL CIRCUIT RANGE/PERFORMANCE
P0961 | PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT RANGE/PERFORMANCE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0961 PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT RANGE/PERFORMANCE
P0962 | PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT LOW | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0962 PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT LOW
P0963 | PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT HIGH | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0963 PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT HIGH
P0965 | PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT RANGE/PERFORMANCE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0965 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT RANGE/PERFORMANCE
P0966 | PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT LOW | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0966 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT LOW
P0967 | PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT HIGH | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0967 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT HIGH
P0970 | PRESSURE CONTROL SOLENOID "C" CONTROL CIRCUIT LOW | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0970 PRESSURE CONTROL SOLENOID "C" CONTROL CIRCUIT LOW
P0971 | PRESSURE CONTROL SOLENOID "C" CONTROL CIRCUIT HIGH | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0971 PRESSURE CONTROL SOLENOID "C" CONTROL CIRCUIT HIGH
P0973 | SHIFT SOLENOID "A" CONTROL CIRCUIT LOW | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0973 SHIFT SOLENOID "A" CONTROL CIRCUIT LOW
P0974 | SHIFT SOLENOID "A" CONTROL CIRCUIT HIGH | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0974 SHIFT SOLENOID "A" CONTROL CIRCUIT HIGH
P0976 | SHIFT SOLENOID "B" CONTROL CIRCUIT LOW | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0976 SHIFT SOLENOID "B" CONTROL CIRCUIT LOW
P0977 | SHIFT SOLENOID "B" CONTROL CIRCUIT HIGH | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0977 SHIFT SOLENOID "B" CONTROL CIRCUIT HIGH
P1603 | ENGINE STALL HISTORY | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P1603 ENGINE STALL HISTORY
P162B | WARNING INDICATOR REQUEST | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P162B WARNING INDICATOR REQUEST
P170A | L-RANGE SWITCH | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P170A L-RANGE SWITCH
P2530 | IGNITION SWITCH RUN POSITION CIRCUIT | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P2530 IGNITION SWITCH RUN POSITION CIRCUIT
P2746 | INTERMEDIATE SHAFT SPEED SENSOR "B" CIRCUIT RANGE/PERFORMANCE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P2746 INTERMEDIATE SHAFT SPEED SENSOR "B" CIRCUIT RANGE/PERFORMANCE
P2747 | INTERMEDIATE SHAFT SPEED SENSOR "B" CIRCUIT NO SIGNAL | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P2747 INTERMEDIATE SHAFT SPEED SENSOR "B" CIRCUIT NO SIGNAL
P2750 | INTERMEDIATE SHAFT SPEED SENSOR "C" CIRCUIT RANGE/PERFORMANCE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P2750 INTERMEDIATE SHAFT SPEED SENSOR "C" CIRCUIT RANGE/PERFORMANCE
P2751 | INTERMEDIATE SHAFT SPEED SENSOR "C" CIRCUIT NO SIGNAL | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P2751 INTERMEDIATE SHAFT SPEED SENSOR "C" CIRCUIT NO SIGNAL
P2757 | TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT PERFORMANCE/STUCK OFF | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P2757 TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT PERFORMANCE/STUCK OFF
P2758 | TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT STUCK ON | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P2758 TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT STUCK ON
P2763 | TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT HIGH | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P2763 TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT HIGH
P2764 | TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT LOW | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P2764 TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT LOW
P2797 | ELECTRIC/AUXILIARY TRANSMISSION FLUID PUMP "A" PERFORMANCE/STUCK OFF | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P2797 ELECTRIC/AUXILIARY TRANSMISSION FLUID PUMP "A" PERFORMANCE/STUCK OFF
U0073 | CONTROL MODULE COMMUNICATION BUS OFF | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0073 CONTROL MODULE COMMUNICATION BUS OFF
U0100 | LOST COMMUNICATION WITH ECM/PCM "A" | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0100 LOST COMMUNICATION WITH ECM/PCM "A"
U0122 | LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE
U0128 | LOST COMMUNICATION WITH PARK BRAKE CONTROL MODULE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0128 LOST COMMUNICATION WITH PARK BRAKE CONTROL MODULE
U0131 | LOST COMMUNICATION WITH POWER STEERING CONTROL MODULE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0131 LOST COMMUNICATION WITH POWER STEERING CONTROL MODULE
U0140 | LOST COMMUNICATION WITH BODY CONTROL MODULE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0140 LOST COMMUNICATION WITH BODY CONTROL MODULE
U0155 | LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE
U0164 | LOST COMMUNICATION WITH HVAC CONTROL MODULE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0164 LOST COMMUNICATION WITH HVAC CONTROL MODULE
U0401 | INVALID DATA RECEIVED FROM ECM/PCM "A" | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0401 INVALID DATA RECEIVED FROM ECM/PCM "A"
U0416 | INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0416 INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE
U0417 | INVALID DATA RECEIVED FROM PARK BRAKE CONTROL MODULE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0417 INVALID DATA RECEIVED FROM PARK BRAKE CONTROL MODULE
U0420 | INVALID DATA RECEIVED FROM POWER STEERING CONTROL MODULE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0420 INVALID DATA RECEIVED FROM POWER STEERING CONTROL MODULE
U0422 | INVALID DATA RECEIVED FROM BODY CONTROL MODULE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0422 INVALID DATA RECEIVED FROM BODY CONTROL MODULE
U0423 | INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE
U0424 | INVALID DATA RECEIVED FROM HVAC CONTROL MODULE | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0424 INVALID DATA RECEIVED FROM HVAC CONTROL MODULE
U1235 | LOST COMMUNICATION WITH EyeSight | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U1235 LOST COMMUNICATION WITH EyeSight
U1433 | INVALID DATA RECEIVED FROM EyeSight | TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U1433 INVALID DATA RECEIVED FROM EyeSight

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0500 VEHICLE SPEED SENSOR "A" CIRCUIT

Refer to “ENGINE (DIAGNOSTICS)” for diagnostic procedure and outline. ENGINE (DIAGNOSTICS)(H4DO)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0500 VEHICLE SPEED SENSOR "A" CIRCUIT

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0604 INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

TCM RAM is faulty.

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.
1.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

2.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC P0604 displayed?

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

Current condition is normal. Check for interference from noise, etc.

General description
OUTLINE OF DIAGNOSIS

Detect the malfunction in RAM area of the TCM.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Error Correcting Code (ECC) check error | Detect

Time needed for diagnosis: Immediately

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0605 INTERNAL CONTROL MODULE READ ONLY MEMORY (ROM) ERROR
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

TCM ROM is faulty.

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.
1.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

2.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC P0605 displayed?

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

Current condition is normal. Check for interference from noise, etc.

General description
OUTLINE OF DIAGNOSIS

Detect the malfunction in ROM area of the TCM.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Error Correcting Code (ECC) check error | Detect

Time needed for diagnosis: Immediately

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0613 TCM PROCESSOR
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Improper gear shifting

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.
1.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

2.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC P0613 displayed?

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

Current condition is normal. Check for interference from noise, etc.

General description
OUTLINE OF DIAGNOSIS

Detect malfunction of the TCM microcomputer.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
TCM Processor error | Detect

Time needed for diagnosis: Immediately

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P062F INTERNAL CONTROL MODULE EEPROM ERROR
1. —

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

TCM EEPROM is faulty.

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.
1.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

2.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC P062F displayed?

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

Current condition is normal. Check for interference from noise, etc.

General description
OUTLINE OF DIAGNOSIS

Diagnosis 1

- Detect the malfunction in EEPROM area of the TCM.

- Judge as NG if an attempt to write to EEPROM area failed.

Diagnosis 2

- Detect the malfunction in EEPROM area of the TCM.

- Judge as malfunction when the consistency in the EEPROM area is lost.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Diagnosis 1 Writing-check (EEPROM) | Error
Diagnosis 2 Checksum (EEPROM) | Error

Time needed for diagnosis: Immediately

Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0705 TRANSMISSION RANGE SENSOR "A" CIRCUIT (PRNDL INPUT)
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Shift characteristics are erroneous.

- The range position of the select lever and the position of shift indicator display do not match.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK INPUT SIGNAL FOR TCM.
yes

4

no

2

2. CHECK HARNESS.
no

Perform the instructed procedures.

yes
3. CHECK INHIBITOR SWITCH.
no

Perform the instructed procedures.

yes
4. CHECK FOR POOR CONTACT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK INPUT SIGNAL FOR TCM.
1.

Turn the ignition switch to ON.

2.

Move the select lever to each range, read the data of [P Range], [R Range Signal], [N Range] and [D Range Signal] using the Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is display “OFF” for the range other than corresponding range?

4

2

2. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Disconnect the inhibitor switch connector.

4.

Measure the resistance between TCM connector and chassis ground.

Connector & terminal

(T10) No. 38 — Chassis ground:

(T10) No. 37 — Chassis ground:

(T10) No. 36 — Chassis ground:

(T10) No. 35 — Chassis ground:

Is each resistance 1 MΩ or more?

3

Repair the short circuit of transmission harness.

3. CHECK INHIBITOR SWITCH.

Move the select lever to each range, and measure the resistance between inhibitor switch terminals.

Connector & terminal

No. 2 — No. 1:

No. 5 — No. 1:

No. 3 — No. 1:

No. 4 — No. 1:

Is the resistance other than corresponding range 1 MΩ or more?

4

Replace the inhibitor switch. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Inhibitor Switch

4. CHECK FOR POOR CONTACT.

Is there poor contact between TCM, inhibitor switch, transmission ground?

Repair the poor contact.

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of transmission range switch.

- Judge as NG if more than one input of transmission range switch are detected.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Engine speed | 400 rpm or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Two or more transmission range switches ON “Transmission range switch ON” is defined as transmission range switch input voltage 1.7 V or less. | True

Time needed for diagnosis: 3 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0708 TRANSMISSION RANGE SENSOR "A" CIRCUIT HIGH
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Shift characteristics are erroneous.

- The range position of the select lever and the position of shift indicator display do not match.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK INPUT SIGNAL FOR TCM.
yes

6

no

2

2. CHECK HARNESS.
no

Perform the instructed procedures.

yes
3. CHECK HARNESS.
no

Perform the instructed procedures.

yes
4. CHECK INHIBITOR SWITCH.
no

Perform the instructed procedures.

yes
5. CHECK HARNESS.
no

Perform the instructed procedures.

yes
6. CHECK FOR POOR CONTACT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK INPUT SIGNAL FOR TCM.
1.

Turn the ignition switch to ON.

2.

Move the select lever to each range, read the data of [P Range], [R Range Signal], [N Range] and [D Range Signal] using the Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is the display of the corresponding range “ON”?

6

2

2. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Disconnect the inhibitor switch connector.

4.

Measure the resistance of the harness between TCM connector and inhibitor switch connector.

Connector & terminal

(T10) No. 38 — (T7) No. 2:

(T10) No. 37 — (T7) No. 5:

(T10) No. 36 — (T7) No. 3:

(T10) No. 35 — (T7) No. 4:

Is each resistance less than 1 Ω?

3

Repair the open circuit of transmission harness.

3. CHECK HARNESS.

Measure the resistance of harness between inhibitor switch connector and transmission ground.

Connector & terminal

(T7) No. 1 — Transmission ground:

Is the resistance less than 1 Ω?

4

Repair the open circuit of harness.

4. CHECK INHIBITOR SWITCH.

Move the select lever to each range, and measure the resistance between inhibitor switch terminals.

Connector & terminal

No. 2 — No. 1:

No. 5 — No. 1:

No. 3 — No. 1:

No. 4 — No. 1:

Is the resistance of the corresponding range less than 1 Ω?

5

Replace the inhibitor switch. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Inhibitor Switch

5. CHECK HARNESS.
1.

Turn the ignition switch to ON.

2.

Measure the voltage between inhibitor switch connector and chassis ground.

Connector & terminal

(T7) No. 2 (+) — Chassis ground (−):

(T7) No. 5 (+) — Chassis ground (−):

(T7) No. 3 (+) — Chassis ground (−):

(T7) No. 4 (+) — Chassis ground (−):

Is each voltage less than 1 V?

6

Repair the harness which outputs 1 V or more.

6. CHECK FOR POOR CONTACT.

Is there poor contact between TCM, inhibitor switch, transmission ground?

Repair the poor contact.

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of transmission range switch.

- Judge as NG if there is no input from all transmission range switches.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Vehicle speed (calculated from measured secondary pulley shaft speed sensor) | 6 MPH or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
All transmission range switches OFF “Transmission range switch OFF” is defined as transmission range switch input voltage 3.4 V or more. | True

Time needed for diagnosis: 3 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0711 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT RANGE/PERFORMANCE

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

- Excessive shift shock

- Shift characteristics malfunction

For the diagnostic procedure, perform the diagnosis according to “DTC P0712” and “DTC P0713”. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0712 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT LOW TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0713 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT HIGH

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

Diagnosis 1

- Judge the malfunction of oil temperature sensor characteristics (stuck to low temperature side).

- Judge as NG if the amount of oil temperature change since ignition ON is equal to or below the predetermined value.

Diagnosis 2

- Judge the malfunction of oil temperature sensor characteristics (stuck to high temperature side).

- Judge as malfunction when the difference between engine coolant temperature and CVT oil temperature is equal to or more than specified value at starting.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
Diagnosis 1 12 V battery system voltage (The timer is held when the following conditions are not satisfied) Transmission range Vehicle speed (calculated from measured secondary pulley shaft speed sensor) | 10 V or more Drive 21.7 MPH or more
Diagnosis 2 12 V battery system voltage Soak time (received from ECM) (Engine speed for time) | 10 V or more 21600 s or more 400 rpm or more 300 s or more

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Diagnosis 1 Absolute change of measured Transmission fluid temperature sensor input voltage Transmission fluid temperature | Less than 0.049 V Less than 20 degC
Diagnosis 2 Transmission fluid temperature at engine start − Engine coolant temperature at engine start | Exceeds 18 degC

Time needed for diagnosis:

- Diagnosis 1: 600 s

- Diagnosis 2: Immediately

Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0712 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT LOW
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Excessive shift shock

- Shift characteristics malfunction

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK HARNESS.
yes

3

no

2

2. CHECK HARNESS INSIDE TRANSMISSION.
no

Perform the instructed procedures.

yes
3. CHECK ATF TEMPERATURE SENSOR.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Measure the resistance of harness between TCM connector and chassis ground.

Connector & terminal

(T10) No. 1 — Chassis ground:

(T10) No. 6 — Chassis ground:

Is the resistance 1 MΩ or more?

3

2

2. CHECK HARNESS INSIDE TRANSMISSION.

Start work after ATF cools down.

1.

Remove the transmission valve cover.

2.

Check for the harness pinch, damage.

Is the check result OK?

3

Replace the transmission harness.

3. CHECK ATF TEMPERATURE SENSOR.

Measure the resistance between TCM connectors.

Connector & terminal

(T10) No. 1 — No. 6:

Perform the measurements using multiple oil temperatures.

Is resistance as follows?

Fluid temperature 0°C → Approx. 6.0 kΩ

Fluid temperature 20°C → Approx. 2.5 kΩ

Fluid temperature 80°C → Approx. 330 Ω

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

General description
OUTLINE OF DIAGNOSIS

- Detect the ground short circuit of oil temperature sensor.

- Judge as NG if the voltage detected by the oil temperature sensor is lower than the predetermined value.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Measured Transmission fluid temperature sensor input voltage | Less than 0.117 V
(Transmission fluid temperature) | (Exceeds 146 degC)

Time needed for diagnosis: 1 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0713 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT HIGH
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Excessive shift shock

- Shift characteristics malfunction

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK HARNESS.
yes

Perform the instructed procedures.

no

2

2. CHECK ATF TEMPERATURE SENSOR.
yes

Perform the instructed procedures.

no

3

3. CHECK ATF TEMPERATURE SENSOR.
no

6

yes
4. CHECK ATF TEMPERATURE SENSOR.
no

Perform the instructed procedures.

yes
5. CHECK INPUT SIGNAL FOR TCM.
yes

Perform the instructed procedures.

no

6

6. CHECK FOR POOR CONTACT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Turn the ignition switch to ON.

4.

Measure the voltage between TCM connectors.

Connector & terminal

(T10) No. 6 (+) — (T10) No. 1 (−):

Is the voltage 5 V or more?

Repair the short circuit of harness.

2

2. CHECK ATF TEMPERATURE SENSOR.
1.

Turn the ignition switch to OFF.

2.

Measure the resistance between TCM connector terminals.

Connector & terminal

(T10) No. 1 — No. 6:

Is the resistance 1 MΩ or more?

Repair the open circuit of transmission harness.

3

3. CHECK ATF TEMPERATURE SENSOR.
1.

Connect the connector to TCM.

2.

Start the engine.

3.

Warm up until the ATF temperature exceeds 50°C (122°F).

4.

Turn the ignition switch to OFF.

5.

Disconnect the TCM connector.

6.

Measure the resistance between TCM connector terminals.

Connector & terminal

(T10) No. 1 — No. 6:

Is the resistance 650 — 990 Ω?

4

6

4. CHECK ATF TEMPERATURE SENSOR.

Measure the resistance between TCM connector terminals.

Connector & terminal

(T10) No. 1 — No. 6:

Does the resistance value increase gradually while the ATF temperature decreases?

5

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

5. CHECK INPUT SIGNAL FOR TCM.
1.

Connect the connector to TCM.

2.

Turn the ignition switch to ON. (Do not start engine.)

3.

Read the data of [ATF Temp.] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Does the ATF temperature gradually decrease?

Check for poor contact of the ATF temperature sensor and TCM connector harness, and repair the defective part.

6

6. CHECK FOR POOR CONTACT.

Is there poor contact of ATF temperature sensor circuit?

Repair the poor contact.

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

General description
OUTLINE OF DIAGNOSIS

- Detect short circuit to power supply or open circuit of the oil temperature sensor 5 V system.

- Judge as NG if the voltage detected by the oil temperature sensor is higher than the predetermined value.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more
Vehicle speed (calculated from measured secondary pulley speed sensor) | 6.3 MPH or more
Above condition satisfied for | 50 s or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Measured Transmission fluid temperature sensor input voltage | More than 4.507 V
(Transmission fluid temperature) | (Less than − 52 degC)

Time needed for diagnosis: 1 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0716 INPUT/TURBINE SHAFT SPEED SENSOR "A" CIRCUIT RANGE/PERFORMANCE
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- No lock-up occurs.

- Shock occurs when selecting shift position.

- Shift control malfunction

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Besides DTC P0716, is DTC U0122 or U0416 displayed?

Perform the diagnosis according to DTCs other than P0716. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

Perform the diagnosis according to DTC P0717. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0717 INPUT/TURBINE SHAFT SPEED SENSOR "A" CIRCUIT NO SIGNAL

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of turbine speed sensor signal characteristics.

- Judge as NG if the turbine speed against the engine speed is outside the possible range considering the hardware capabilities.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Engine speed | 400 rpm or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Measured turbine shaft speed | Less than the rpm values in Table 1

Table 1

Engine speed (rpm) | 3700 | 3727 | 3755 | 3782 | 3856 | 4019 | 4213 | 4456
Measured turbine shaft speed (rpm) | 0 | 500 | 1000 | 1500 | 2000 | 2500 | 3000 | 3500

Engine speed (rpm) | 4786 | 5213 | 5651 | 6101 | 6569 | 7044 | 7520
Measured turbine shaft speed (rpm) | 4000 | 4500 | 5000 | 5500 | 6000 | 6500 | 7000

Time needed for diagnosis: 10 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0717 INPUT/TURBINE SHAFT SPEED SENSOR "A" CIRCUIT NO SIGNAL
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Standing start problems

- Shock occurs when engaging the lockup clutch.

- Shock occurs when selecting shift position.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM•ECM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK FUSE.
no

Perform the instructed procedures.

yes
2. CHECK ECM CONNECTOR.
no

Perform the instructed procedures.

yes
3. CHECK HARNESS BETWEEN TRANSMISSION CONNECTOR AND MAIN RELAY CONNECTOR.
yes

Perform the instructed procedures.

no

4

4. CHECK HARNESS BETWEEN ECM AND MAIN RELAY CONNECTOR.
no

Perform the instructed procedures.

yes
5. CHECK HARNESS.
no

Perform the instructed procedures.

yes
6. CHECK HARNESS.
no

Perform the instructed procedures.

yes
7. CHECK TRANSMISSION HARNESS.
no

Perform the instructed procedures.

yes
8. CHECK INPUT SIGNAL FOR TCM.
yes

Perform the instructed procedures.

no

9

9. CHECK TRANSMISSION HARNESS.
no

Perform the instructed procedures.

yes
10. CHECK TURBINE SPEED SENSOR.
no

Perform the instructed procedures.

yes
11. CHECK MAIN RELAY.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK FUSE.
1.

Turn the ignition switch to OFF.

2.

Check the M/B fuse No. 21.

Is the check result OK?

2

Replace the fuse. If the fuse blows out easily, repair the short circuit of harness.

2. CHECK ECM CONNECTOR.

Check the connecting condition of ECM connector.

Is the ECM connector correctly connected?

3

Connect the ECM connector correctly.

3. CHECK HARNESS BETWEEN TRANSMISSION CONNECTOR AND MAIN RELAY CONNECTOR.
1.

Turn the ignition switch to OFF.

2.

Measure the voltage between transmission connector and chassis ground.

Connector & terminal

(T15) No. 19 (+) — Chassis ground (−):

Is the voltage 10 V or more?

- Repair the harness and connector.

- In this case, repair the following item:

  - Short circuit to power supply of harness between transmission connector and main relay connector

  - Defective main relay

4

4. CHECK HARNESS BETWEEN ECM AND MAIN RELAY CONNECTOR.
1.

Turn the ignition switch to OFF.

2.

Remove the main relay.

3.

Disconnect the ECM connector.

4.

Measure the resistance between the ECM connector and engine ground.

Connector & terminal

(B134) No. 12 — Engine ground:

Is the resistance 1 MΩ or more?

5

Repair the short circuit to ground in harness between ECM connector and main relay connector.

5. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Disconnect the turbine speed sensor connector.

4.

Measure the resistance between TCM connector and turbine speed sensor connector.

Connector & terminal

(T10) No. 12 — (AT5) No. 2:

(T10) No. 26 — (AT5) No. 3:

Is the resistance less than 1 Ω?

6

Repair the open circuit of harness.

6. CHECK HARNESS.

Measure the resistance between TCM connector and chassis ground.

Connector & terminal

(T10) No. 12 — Chassis ground:

Is the resistance 1 MΩ or more?

7

Repair the short circuit of harness.

7. CHECK TRANSMISSION HARNESS.
1.

Install the fuse.

2.

Connect the TCM connector.

3.

Disconnect the transmission connector. (E115, T15)

4.

Turn the ignition switch to ON.

5.

Measure the voltage between transmission connector and chassis ground.

Connector & terminal

(E115) No. 19 (+) — Chassis ground (−):

Is the voltage 10 — 13 V?

8

Repair the open circuit of harness or poor contact of connector.

8. CHECK INPUT SIGNAL FOR TCM.
1.

Turn the ignition switch to OFF.

2.

Connect all connectors.

3.

Lift up the vehicle.

4.

Start the engine.

5.

Read the data of [Turbine Revolution Speed] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Does the value of [Turbine Revolution Speed] change according to the engine speed?

Current condition is normal. Repair the poor contacts of harnesses of turbine speed sensor and transmission connector.

9

9. CHECK TRANSMISSION HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the transmission connector.

3.

Disconnect the turbine speed sensor connector.

4.

Measure the resistance between transmission connector and turbine speed sensor connector.

Connector & terminal

(T15) No. 19 — (AT5) No. 1:

Is the resistance less than 1 Ω?

10

Replace the transmission harness.

10. CHECK TURBINE SPEED SENSOR.
1.

Turn the ignition switch to OFF.

2.

Replace the turbine speed sensor. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Turbine Speed Sensor

3.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

4.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC P0717 displayed?

11

The original turbine speed sensor is defective.

11. CHECK MAIN RELAY.
1.

Turn the ignition switch to OFF.

2.

Replace the main relay.

3.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

4.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC P0717 displayed?

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

The original main relay is defective.

General description
OUTLINE OF DIAGNOSIS

- Detect the no input signal from the turbine speed sensor.

- Judge as NG if there is no input signal from the turbine speed sensor, while the primary speed sensor on the same shaft has the input signal with the forward/reverse clutch engaged.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Engine speed | 400 rpm or more
Transmission range | Drive or Reverse
Measured primary pulley shaft speed | 500 rpm or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Measured turbine shaft speed | 0 rpm

Time needed for diagnosis: 0.6 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0719 BRAKE SWITCH "B" CIRCUIT LOW
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Gear is not shifted down when climbing a hill or driving down a hill.

Wiring diagram:

Stop light system WIRING SYSTEM>Stop Light System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK FUSE (NO. 37).
no

Perform the instructed procedures.

yes
2. CHECK HARNESS.
no

Perform the instructed procedures.

yes
3. CHECK HARNESS.
no

Perform the instructed procedures.

yes
4. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
5. CHECK INPUT SIGNAL FOR TCM.
yes

Perform the instructed procedures.

no

6

6. CHECK FOR POOR CONTACT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK FUSE (NO. 37).
1.

Turn the ignition switch to OFF.

2.

Remove the fuse (No. 37).

3.

Check the fuse.

Is the check result OK?

2

Replace the fuse (No. 37). If the new fuse (No. 37) has blown out easily, repair the short circuit of harness between the fuse (No. 37) and stop light switch.

2. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Disconnect the stop light switch connector.

4.

Measure the resistance between TCM connector and stop light switch connector.

Connector & terminal

(T10) No. 29 — (B65) No. 2:

Is the resistance less than 1 Ω?

3

Repair the open circuit of harness.

3. CHECK HARNESS.

Measure the resistance between the stop light switch connector and fuse (No. 37).

Connector & terminal

(B65) No. 1 — Fuse (No. 37):

Is the resistance less than 1 Ω?

4

Repair the open circuit of harness.

4. CHECK INPUT SIGNAL FOR TCM.
1.

Install the fuse (No. 37).

2.

Connect the stop light switch connector.

3.

Depress the brake pedal.

4.

Measure the voltage between TCM connector and chassis ground.

Connector & terminal

(T10) No. 29 (+) — Chassis ground (−):

Is the voltage 10 V or more?

5

Replace the stop light switch. BRAKE>Stop Light Switch

5. CHECK INPUT SIGNAL FOR TCM.
1.

Connect the TCM connector.

2.

With brake pedal depressed, read the data of [Stop Light Switch] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is “ON” displayed?

Current condition is normal. Check for poor contact in connectors or harnesses, and repair the defective part.

6

6. CHECK FOR POOR CONTACT.

Is there poor contact in the stop light switch input signal circuit?

Repair the poor contact.

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

General description
OUTLINE OF DIAGNOSIS

- Detect no input from the brake signal.

- Judge as NG if a predetermined number of deceleration occurs while the EyeSight adaptive cruise control is set to OFF and the brake is OFF.

EXECUTION CONDITION (MODELS WITH EyeSight)

Secondary parameters | Execution condition
EyeSight adaptive cruise control | OFF

EXECUTION CONDITION (MODELS WITHOUT EyeSight)

Secondary parameters | Execution condition
None |

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Number of times that vehicle speed changes from 30 km/h to 1 km/h while the brake SW is OFF | Exceeds 10 counts

Time needed for diagnosis: Immediately

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0724 BRAKE SWITCH "B" CIRCUIT HIGH
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Gear is not shifted down when climbing a hill or driving down a hill.

Wiring diagram:

Stop light system WIRING SYSTEM>Stop Light System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK STOP LIGHT SWITCH.
no

Perform the instructed procedures.

yes
2. CHECK HARNESS.
yes

Perform the instructed procedures.

no

3

3. CHECK INPUT SIGNAL FOR TCM.
yes

Perform the instructed procedures.

no

4

4. CHECK FOR POOR CONTACT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK STOP LIGHT SWITCH.
1.

Turn the ignition switch to OFF.

2.

Disconnect the stop light switch connector.

3.

Measure the resistance between stop light switch.

Connector & terminal

(B65) No. 1 — No. 2:

Is the resistance 1 MΩ or more?

2

Replace the stop light switch. BRAKE>Stop Light Switch

2. CHECK HARNESS.
1.

Disconnect the TCM connector.

2.

Turn the ignition switch to ON.

3.

Measure the voltage between TCM connector and chassis ground.

Connector & terminal

(T10) No. 29 (+) — Chassis ground (−):

Is the voltage 10 V or more?

Repair the short circuit of harness.

3

3. CHECK INPUT SIGNAL FOR TCM.
1.

Connect all connectors.

2.

Turn the ignition switch to ON.

3.

Read the data of [Stop Light Switch] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is “OFF” displayed?

Current condition is normal. Check for poor contact in connectors or harnesses, and repair the defective part.

4

4. CHECK FOR POOR CONTACT.

Is there poor contact in the stop light switch input signal circuit?

Repair the poor contact.

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

General description
OUTLINE OF DIAGNOSIS

- Detect the brake signal stuck to ON.

- Judge as NG if a predetermined number of acceleration occurs while the EyeSight adaptive cruise control is set to OFF and the brake is ON.

EXECUTION CONDITION (MODELS WITH EyeSight)

Secondary parameters | Execution condition
EyeSight adaptive cruise control | OFF

EXECUTION CONDITION (MODELS WITHOUT EyeSight)

Secondary parameters | Execution condition
None |

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Number of times that vehicle speed changes from 1 km/h to 30 km/h while the brake SW is ON | Exceeds 10 counts

Time needed for diagnosis: Immediately

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0730 INCORRECT GEAR RATIO
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Acceleration is poor during standing start.

- Shift control malfunction

- Engine speed increases abruptly.

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
2. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
3. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
4. CHECK INPUT SIGNAL FOR TCM.
no

6

yes
5. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
6. CHECK BY INSPECTION MODE.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK TRANSMISSION FLUID.

Check the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

Is the check result OK?

2

Adjust the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

2. CHECK TRANSMISSION FLUID.

Check the condition of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

Is the check result OK?

Return ATF. 3

Check according to the “Corrective action” of ATF (CVTF) “CONDITION CHECK”. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

3. CHECK INPUT SIGNAL FOR TCM.
1.

Lift up the vehicle.

2.

Start the engine.

3.

Warm up until the ATF temperature reaches to 40 — 70°C (104 — 158°F).

4.

Depress the brake pedal, and shift the select lever to “D” range.

5.

Shift the select lever to “P” range.

6.

Stabilize the engine speed at idle.

7.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 0.5 — 1.5 MPa?

4

Perform the diagnosis according to DTC P0841. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0841 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT RANGE/PERFORMANCE

4. CHECK INPUT SIGNAL FOR TCM.
1.

Set the select lever to “D” range.

2.

Release the brake pedal to stabilize the engine speed and front wheel speed.

3.

Read the data of [Actual Gear Ratio] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Gear Ratio] 1.5 — 2.7?

5

6

5. CHECK INPUT SIGNAL FOR TCM.
1.

Set the select lever to “D” range.

2.

Slowly increase the speed to 40 km/h (25 MPH) and keep the constant speed.

3.

Read the data of [Actual Gear Ratio] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Gear Ratio] 0.5 — 1.0?

6

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

6. CHECK BY INSPECTION MODE.
1.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

2.

Execute the inspection mode. TRANSMISSION (DIAGNOSTICS)>Inspection Mode

Does the AT OIL TEMP light blink and is DTC P0730 displayed?

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

Current condition is normal. It is possible that temporary poor contact occurs.

General description
OUTLINE OF DIAGNOSIS

- Detect the abnormality in transmission gear ratio control function.

- Judge as NG if a discrepancy between the transmission target gear ratio (as internal data) and the actual gear ratio becomes the specified value or more. (Compare the value of “Gear Ratio Target × Secondary pulley speed ≈ Target primary speed equivalent value” with the value of primary pulley speed sensor.)

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Engine speed | 400 rpm or more
Transmission range | Drive

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
ABS∗ (Target primary pulley shaft speed − Measured primary pulley shaft speed) | 600 rpm or more
(Commanded duty of shift up pressure control solenoid | 90% or more
or |
Commanded duty of shift down pressure control solenoid) | 90% or more

∗ ABS: Absolute value

Time needed for diagnosis: 5 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0746 PRESSURE CONTROL SOLENOID "A" PERFORMANCE/STUCK OFF
1. —

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

- Acceleration is poor during standing start.

- Shift control malfunction

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Before performing diagnosis, record the freeze frame data.

- Use the check board when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

2

2. CHECK SECONDARY SOLENOID (ACTIVE TEST).
yes

5

no

3

3. CHECK SECONDARY SOLENOID.
yes

7

no

4

4. CHECK HARNESS.
yes

7

no

Perform the instructed procedures.

5. CHECK TRANSMISSION FLUID.
no

6

yes
6. CHECK TRANSMISSION FLUID.
no

7

yes
7. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
8. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
9. CHECK FREEZE FRAME DATA.
yes

Perform the instructed procedures.

no

10

10. CHECK TCM INPUT SIGNAL (STALL TEST).
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Besides DTC P0746 and P0867, is DTC P0842, P0843, P0962, or P0963 displayed?

Perform the diagnosis according to DTCs other than P0746 and P867. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2

2. CHECK SECONDARY SOLENOID (ACTIVE TEST).
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, perform the active test for secondary solenoid. TRANSMISSION (DIAGNOSTICS)>Active Test

Does the indication of 0 → 500 mA appear repeatedly during the active test, and does operating sound emit during indicating 500 mA?

5

3

3. CHECK SECONDARY SOLENOID.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 32 — Transmission body:

Is the resistance approximately 4.8 — 8.4 Ω? (When cold)

7

4

4. CHECK HARNESS.

Check the transmission harness. (Open circuit, short circuit to power supply, short circuit to ground, and poor contact)

Is the check result OK?

7

Repair the harness.

5. CHECK TRANSMISSION FLUID.

Check the condition of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

Is the check result OK?

Return ATF. 6

Replace the ATF. 6

6. CHECK TRANSMISSION FLUID.
1.

Connect the TCM connector.

2.

Check the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

Is the check result OK?

7

Adjust the amount of ATF. 7

7. CHECK INPUT SIGNAL FOR TCM.
1.

Lift up the vehicle.

2.

Start the engine.

3.

Warm up until the ATF temperature reaches to 40 — 70°C (104 — 158°F).

4.

Depress the brake pedal, and shift the select lever to “D” range.

5.

Shift the select lever to “P” range.

6.

Stabilize the engine speed at idle.

7.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 0.5 — 1.5 MPa?

8

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

8. CHECK INPUT SIGNAL FOR TCM.
1.

Shift the select lever to “P” range.

2.

Keep the engine speed at 3,000 rpm.

3.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 1.5 — 2.5 MPa? And is the difference between the actual oil pressure and the value measured in Step 7 0.2 MPa or more?

9

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

9. CHECK FREEZE FRAME DATA.
1.

Turn the ignition switch to OFF.

2.

Check the recorded freeze frame data for DTC P0867. TRANSMISSION (DIAGNOSTICS)>Freeze Frame Data

3.

Apply the values of [Actual Secondary Pressure] and [Secondary Actual Current] recorded in the freeze frame data onto the graph shown in the following figure, and judge if either low-voltage malfunction or high-voltage malfunction occurs.

(A) Actual secondary pressure (MPa)

(B) Secondary actual current (mA)

(C) Low-voltage malfunction

(D) High-voltage malfunction

Symptom that the DTC P0867 illuminates can be classified into 2 patterns.

- Low-voltage malfunction: detected due to insufficient oil pressure

- High-voltage malfunction: detected due to excessive oil pressure

Was the detected symptom low-voltage malfunction?

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

10

10. CHECK TCM INPUT SIGNAL (STALL TEST).
1.

Apply the parking brake.

2.

Set the select lever to “D” range.

3.

Depress the brake pedal firmly.

4.

Slowly open the accelerator fully, and stabilize the engine speed.

5.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Do not perform a stall test for over 5 seconds at a time.

Is the value of [Actual Secondary Pressure] 6.0 MPa or more?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of transmission secondary solenoid and hydraulic circuit (stuck to high pressure side).

- Judge as NG, when the secondary pressure sensor value at P0867 detection is the predetermined value or more, and the secondary pressure sensor voltage value after the predetermined period of time has elapsed since IG OFF is within the predetermined range.

EXECUTION CONDITION

Secondary parameters | Execution condition
Phase 1 12 V battery system voltage Engine speed | 10 V or more At or more than rpm values in Table 1
Phase 2 Fail detected (P0867) 12 V battery system voltage Ignition state Measured turbine shaft speed Transmission fluid temperature | TRUE 10 V or more OFF 400 rpm or less −20 degC or more

Table 1

Target line pressure (kPa) | 0 | 500 | 1000 | 1500 | 2000 | 3000 | 4000 | 5000 | 6000
Engine speed (rpm) | 1049 | 1189 | 1328 | 1467 | 1610 | 1916 | 2535 | 8000 | 8000

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Phase 1 ABS∗ (Target line pressure − Measured line pressure) Measured line pressure | More than 500 kPa 3000 kPa or more
Phase 2 Measured line pressure sensor input voltage (Line pressure) Measured line pressure sensor input voltage (Line pressure) Both Phase 1 and Phase 2 must be met to fail the diagnostics. | 0.8 V or less (570 kPa or less) 0.195 V or more (0 kPa or more)

∗ ABS: Absolute value

Time needed for diagnosis:

- Phase 1: 5 s

- Phase 2: 3 s

Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0747 PRESSURE CONTROL SOLENOID "A" STUCK ON
1. —

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

- Shift control malfunction

- CVT chain slippage

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Before performing diagnosis, record the freeze frame data.

- Use the check board when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

2

2. CHECK SECONDARY SOLENOID (ACTIVE TEST).
yes

5

no

3

3. CHECK SECONDARY SOLENOID.
yes

7

no

4

4. CHECK HARNESS.
yes

7

no

Perform the instructed procedures.

5. CHECK TRANSMISSION FLUID.
no

6

yes
6. CHECK TRANSMISSION FLUID.
no

7

yes
7. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
8. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
9. CHECK FREEZE FRAME DATA.
yes

Perform the instructed procedures.

no

10

10. CHECK TCM INPUT SIGNAL (STALL TEST).
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Besides DTC P0747 and P0867, is DTC P0842, P0843, P0962, or P0963 displayed?

Perform the diagnosis according to DTCs other than P0747 and P867. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2

2. CHECK SECONDARY SOLENOID (ACTIVE TEST).
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, perform the active test for secondary solenoid. TRANSMISSION (DIAGNOSTICS)>Active Test

Does the indication of 0 → 500 mA appear repeatedly during the active test, and does operating sound emit during indicating 500 mA?

5

3

3. CHECK SECONDARY SOLENOID.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 32 — Transmission body:

Is the resistance approximately 4.8 — 8.4 Ω? (When cold)

7

4

4. CHECK HARNESS.

Check the transmission harness. (Open circuit, short circuit to power supply, short circuit to ground, and poor contact)

Is the check result OK?

7

Repair the harness.

5. CHECK TRANSMISSION FLUID.

Check the condition of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

Is the check result OK?

Return ATF. 6

Replace the ATF. 6

6. CHECK TRANSMISSION FLUID.
1.

Connect the TCM connector.

2.

Check the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

Is the check result OK?

7

Adjust the amount of ATF. 7

7. CHECK INPUT SIGNAL FOR TCM.
1.

Lift up the vehicle.

2.

Start the engine.

3.

Warm up until the ATF temperature reaches to 40 — 70°C (104 — 158°F).

4.

Depress the brake pedal, and shift the select lever to “D” range.

5.

Shift the select lever to “P” range.

6.

Stabilize the engine speed at idle.

7.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 0.5 — 1.5 MPa?

8

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

8. CHECK INPUT SIGNAL FOR TCM.
1.

Shift the select lever to “P” range.

2.

Keep the engine speed at 3,000 rpm.

3.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 1.5 — 2.5 MPa? And is the difference between the actual oil pressure and the value measured in Step 7 0.2 MPa or more?

9

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

9. CHECK FREEZE FRAME DATA.
1.

Turn the ignition switch to OFF.

2.

Check the recorded freeze frame data for DTC P0867. TRANSMISSION (DIAGNOSTICS)>Freeze Frame Data

3.

Apply the values of [Actual Secondary Pressure] and [Secondary Actual Current] recorded in the freeze frame data onto the graph shown in the following figure, and judge if either low-voltage malfunction or high-voltage malfunction occurs.

(A) Actual secondary pressure (MPa)

(B) Secondary actual current (mA)

(C) Low-voltage malfunction

(D) High-voltage malfunction

Symptom that the DTC P0867 illuminates can be classified into 2 patterns.

- Low-voltage malfunction: detected due to insufficient oil pressure

- High-voltage malfunction: detected due to excessive oil pressure

Was the detected symptom low-voltage malfunction?

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

10

10. CHECK TCM INPUT SIGNAL (STALL TEST).
1.

Apply the parking brake.

2.

Set the select lever to “D” range.

3.

Depress the brake pedal firmly.

4.

Slowly open the accelerator fully, and stabilize the engine speed.

5.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Do not perform a stall test for over 5 seconds at a time.

Is the value of [Actual Secondary Pressure] 6.0 MPa or more?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of transmission secondary solenoid and hydraulic circuit (stuck to low pressure side).

- Judge as NG, when the secondary pressure sensor value at P0867 detection is less than the predetermined value, and the secondary pressure sensor voltage value after the predetermined period of time has elapsed since IG OFF is within the predetermined range.

EXECUTION CONDITION

Secondary parameters | Execution condition
Phase 1 12 V battery system voltage Engine speed | 10 V or more At or more than rpm values in Table 1
Phase 2 Fail detected (P0867) 12 V battery system voltage Ignition state Measured turbine shaft speed Transmission fluid temperature | TRUE 10 V or more OFF 400 rpm or less −20 degC or more

Table 1

Target line pressure (kPa) | 0 | 500 | 1000 | 1500 | 2000 | 3000 | 4000 | 5000 | 6000
Engine speed (rpm) | 1049 | 1189 | 1328 | 1467 | 1610 | 1916 | 2535 | 8000 | 8000

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Phase 1 ABS∗ (Target line pressure − Measured line pressure) Measured line pressure | More than 500 kPa Less than 3000 kPa
Phase 2 Measured line pressure sensor input voltage (Line pressure) Measured line pressure sensor input voltage (Line pressure) Both Phase 1 and Phase 2 must be met to fail the diagnostics. | 0.8 V or less (570 kPa or less) 0.195 V or more (0 kPa or more)

∗ ABS: Absolute value

Time needed for diagnosis:

- Phase 1: 5 s

- Phase 2: 3 s

Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0751 SHIFT SOLENOID "A" PERFORMANCE/STUCK OFF
1. —

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

- Shift control malfunction

- Engine speed increases abruptly.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use the check board when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

2

2. CHECK PRIMARY UP SOLENOID (ACTIVE TEST).
yes

5

no

3

3. CHECK PRIMARY UP SOLENOID.
yes

7

no

4

4. CHECK HARNESS.
yes

7

no

Perform the instructed procedures.

5. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
6. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
7. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
8. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
9. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
10. DRIVING CHECK BY INSPECTION MODE.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Besides DTC P0751, is any of the DTCs P0973, P0974, P0976, P0977, P2747 and P2751 displayed?

Perform the diagnosis according to DTCs other than P0751. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2

2. CHECK PRIMARY UP SOLENOID (ACTIVE TEST).
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, perform the active test for primary UP solenoid. TRANSMISSION (DIAGNOSTICS)>Active Test

Does the indication of 0 → 50% appear repeatedly during the active test, and does operating sound emit during indicating 50%?

5

3

3. CHECK PRIMARY UP SOLENOID.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 47 — Transmission body:

Is the resistance approximately 10 — 14.2 Ω? (When cold)

7

4

4. CHECK HARNESS.

Check the transmission harness. (Open circuit, short circuit to power supply, short circuit to ground, and poor contact)

Is the check result OK?

7

Repair the harness.

5. CHECK TRANSMISSION FLUID.
1.

Connect the TCM connector.

2.

Check the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

Is the check result OK?

6

Adjust the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

6. CHECK TRANSMISSION FLUID.

Check the condition of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

Is the check result OK?

Return ATF. 7

Check according to the “Corrective action” of ATF (CVTF) “CONDITION CHECK”. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

7. CHECK INPUT SIGNAL FOR TCM.
1.

Lift up the vehicle.

2.

Start the engine.

3.

Warm up until the ATF temperature reaches to 40 — 70°C (104 — 158°F).

4.

Depress the brake pedal, and shift the select lever to “D” range.

5.

Shift the select lever to “P” range.

6.

Stabilize the engine speed at idle.

7.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 0.5 — 1.5 MPa?

8

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

8. CHECK INPUT SIGNAL FOR TCM.
1.

Set the select lever to “D” range.

2.

Release the brake pedal to stabilize the engine speed and front wheel speed.

3.

Read the data of [Actual Gear Ratio] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Gear Ratio] 1.5 — 2.6?

9

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

9. CHECK INPUT SIGNAL FOR TCM.
1.

Set the select lever to “D” range.

2.

Slowly increase the speed to 40 km/h (25 MPH) and keep to a constant speed.

3.

Read the data of [Actual Gear Ratio] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Gear Ratio] 0.5 — 0.9?

10

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

10. DRIVING CHECK BY INSPECTION MODE.
1.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

2.

Perform a drive check based on the “Inspection mode”. TRANSMISSION (DIAGNOSTICS)>Inspection Mode

Does the AT OIL TEMP light blink and is DTC P0751 displayed?

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

Current condition is normal. It is possible that temporary poor contact occurs.

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of shift-up fluid pressure control solenoid and hydraulic circuit characteristics (stuck to low pressure side).

- Judge as NG if the amount of gear rate change per second is equal to or larger than the predetermined value, even though the up-shift command is issued.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Engine speed | 1000 rpm or more
Commanded duty of shift down pressure control solenoid | 0%
Actual pulley ratio∗ | More than 1.5
| and
| Less than 2.683

∗ Actual pulley ratio: Measured primary pulley shaft speed / Measured secondary pulley shaft speed

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Actual pulley ratio change for 1 second | More than −0.08
Commanded duty of shift up pressure control solenoid | 90% or more

Time needed for diagnosis: 1 s

Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0752 SHIFT SOLENOID "A" STUCK ON
1. —

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

- Acceleration is poor during standing start.

- Shift control malfunction

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use the check board when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

2

2. CHECK PRIMARY UP SOLENOID (ACTIVE TEST).
yes

5

no

3

3. CHECK PRIMARY UP SOLENOID.
yes

7

no

4

4. CHECK HARNESS.
yes

7

no

Perform the instructed procedures.

5. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
6. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
7. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
8. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
9. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
10. DRIVING CHECK BY INSPECTION MODE.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Besides DTC P0752, is any of the DTCs P0973, P0974, P0976, P0977, P2747 and P2751 displayed?

Perform the diagnosis according to DTCs other than P0752. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2

2. CHECK PRIMARY UP SOLENOID (ACTIVE TEST).
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, perform the active test for primary UP solenoid. TRANSMISSION (DIAGNOSTICS)>Active Test

Does the indication of 0 → 50% appear repeatedly during the active test, and does operating sound emit during indicating 50%?

5

3

3. CHECK PRIMARY UP SOLENOID.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 47 — Transmission body:

Is the resistance approximately 10 — 14.2 Ω? (When cold)

7

4

4. CHECK HARNESS.

Check the transmission harness. (Open circuit, short circuit to power supply, short circuit to ground, and poor contact)

Is the check result OK?

7

Repair the harness.

5. CHECK TRANSMISSION FLUID.
1.

Connect the TCM connector.

2.

Check the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

Is the check result OK?

6

Adjust the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

6. CHECK TRANSMISSION FLUID.

Check the condition of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

Is the check result OK?

Return ATF. 7

Check according to the “Corrective action” of ATF (CVTF) “CONDITION CHECK”. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

7. CHECK INPUT SIGNAL FOR TCM.
1.

Lift up the vehicle.

2.

Start the engine.

3.

Warm up until the ATF temperature reaches to 40 — 70°C (104 — 158°F).

4.

Depress the brake pedal, and shift the select lever to “D” range.

5.

Shift the select lever to “P” range.

6.

Stabilize the engine speed at idle.

7.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 0.5 — 1.5 MPa?

8

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

8. CHECK INPUT SIGNAL FOR TCM.
1.

Set the select lever to “D” range.

2.

Release the brake pedal to stabilize the engine speed and front wheel speed.

3.

Read the data of [Actual Gear Ratio] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Gear Ratio] 1.5 — 2.6?

9

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

9. CHECK INPUT SIGNAL FOR TCM.
1.

Set the select lever to “D” range.

2.

Slowly increase the speed to 40 km/h (25 MPH) and keep to a constant speed.

3.

Read the data of [Actual Gear Ratio] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Gear Ratio] 0.5 — 0.9?

10

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

10. DRIVING CHECK BY INSPECTION MODE.
1.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

2.

Execute the inspection mode. TRANSMISSION (DIAGNOSTICS)>Inspection Mode

Does the AT OIL TEMP light blink and is DTC P0752 displayed?

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

Current condition is normal. It is possible that temporary poor contact occurs.

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of shift-up fluid pressure control solenoid and hydraulic circuit characteristics (stuck to high pressure side).

- Judge as NG if the amount of gear rate change per second is within the predetermined value, even though the down-shift command is issued.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Engine speed | 1000 rpm or more
Commanded duty of shift up pressure control solenoid | 0%
Actual pulley ratio∗ | Less than 0.5

∗ Actual pulley ratio: Measured primary pulley shaft speed / Measured secondary pulley shaft speed

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Actual pulley ratio change for 1 second | More than −0.08
| and
| Less than 0.08
Commanded duty of shift down pressure control solenoid | More than 80%

Time needed for diagnosis: 1 s

Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0756 SHIFT SOLENOID "B" PERFORMANCE/STUCK OFF
1. —

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

- Acceleration is poor during standing start.

- Shift control malfunction

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use the check board when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

2

2. CHECK PRIMARY DOWN SOLENOID (ACTIVE TEST).
yes

5

no

3

3. CHECK PRIMARY DOWN SOLENOID.
yes

7

no

4

4. CHECK HARNESS.
yes

7

no

Perform the instructed procedures.

5. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
6. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
7. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
8. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
9. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
10. DRIVING CHECK BY INSPECTION MODE.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Besides DTC P0756, is any of the DTCs P0973, P0974, P0976, P0977, P2747 and P2751 displayed?

Perform the diagnosis according to DTCs other than P0756. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2

2. CHECK PRIMARY DOWN SOLENOID (ACTIVE TEST).
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, perform the active test for primary DOWN solenoid. TRANSMISSION (DIAGNOSTICS)>Active Test

Does the indication of 0 → 50% appear repeatedly during the active test, and does operating sound emit during indicating 50%?

5

3

3. CHECK PRIMARY DOWN SOLENOID.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 30 — Transmission body:

Is the resistance approximately 10 — 14.2 Ω? (When cold)

7

4

4. CHECK HARNESS.

Check the transmission harness. (Open circuit, short circuit to power supply, short circuit to ground, and poor contact)

Is the check result OK?

7

Repair the harness.

5. CHECK TRANSMISSION FLUID.
1.

Connect the TCM connector.

2.

Check the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

Is the check result OK?

6

Adjust the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

6. CHECK TRANSMISSION FLUID.

Check the condition of ATF.

Is the check result OK? CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

Return ATF. 7

Check according to the “Corrective action” of ATF (CVTF) “CONDITION CHECK”. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

7. CHECK INPUT SIGNAL FOR TCM.
1.

Lift up the vehicle.

2.

Start the engine.

3.

Warm up until the ATF temperature reaches to 40 — 70°C (104 — 158°F).

4.

Depress the brake pedal, and shift the select lever to “D” range.

5.

Shift the select lever to “P” range.

6.

Stabilize the engine speed at idle.

7.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 0.5 — 1.5 MPa?

8

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

8. CHECK INPUT SIGNAL FOR TCM.
1.

Set the select lever to “D” range.

2.

Release the brake pedal to stabilize the engine speed and front wheel speed.

3.

Read the data of [Actual Gear Ratio] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Gear Ratio] 1.5 — 2.6?

9

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

9. CHECK INPUT SIGNAL FOR TCM.
1.

Set the select lever to “D” range.

2.

Slowly increase the speed to 40 km/h (25 MPH) and keep to a constant speed.

3.

Read the data of [Actual Gear Ratio] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Gear Ratio] 0.5 — 0.9?

10

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

10. DRIVING CHECK BY INSPECTION MODE.
1.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

2.

Execute the inspection mode. TRANSMISSION (DIAGNOSTICS)>Inspection Mode

Does the AT OIL TEMP light blink and is DTC P0756 displayed?

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

Current condition is normal. It is possible that temporary poor contact occurs.

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of shift-down fluid pressure control solenoid and hydraulic circuit characteristics (stuck to low pressure side).

- Judge as NG if the amount of gear rate change per second is within the predetermined value, even though the down-shift command is issued.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Engine speed | 1000 rpm or more
Commanded duty of shift up pressure control solenoid | 0%
Actual pulley ratio∗ | 0.5 or more
| and
| 2.683 or less

∗ Actual pulley ratio: Measured primary pulley shaft speed / Measured secondary pulley shaft speed

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Actual pulley ratio change for 1 second | More than −0.08
| and
| Less than 0.08
Commanded duty of shift down pressure control solenoid | More than 80%

Time needed for diagnosis: 1 s

Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0757 SHIFT SOLENOID "B" STUCK ON
1. —

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

- Vibration occurs at shift change.

- Shift control malfunction

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use the check board when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

2

2. CHECK PRIMARY DOWN SOLENOID (ACTIVE TEST).
yes

5

no

3

3. CHECK PRIMARY DOWN SOLENOID.
yes

7

no

4

4. CHECK HARNESS.
yes

7

no

Perform the instructed procedures.

5. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
6. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
7. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
8. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
9. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
10. DRIVING CHECK BY INSPECTION MODE.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Besides DTC P0757, is any of the DTCs P0973, P0974, P0976, P0977, P2747 and P2751 displayed?

Perform the diagnosis according to DTCs other than P0757. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2

2. CHECK PRIMARY DOWN SOLENOID (ACTIVE TEST).
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, perform the active test for primary DOWN solenoid. TRANSMISSION (DIAGNOSTICS)>Active Test

Does the indication of 0 → 50% appear repeatedly during the active test, and does operating sound emit during indicating 50%?

5

3

3. CHECK PRIMARY DOWN SOLENOID.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 30 — Transmission body:

Is the resistance approximately 10 — 14.2 Ω? (When cold)

7

4

4. CHECK HARNESS.

Check the transmission harness. (Open circuit, short circuit to power supply, short circuit to ground, and poor contact)

Is the check result OK?

7

Repair the harness.

5. CHECK TRANSMISSION FLUID.
1.

Connect the TCM connector.

2.

Check the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

Is the check result OK?

6

Adjust the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

6. CHECK TRANSMISSION FLUID.

Check the condition of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

Is the check result OK?

Return ATF. 7

Check according to the “Corrective action” of ATF (CVTF) “CONDITION CHECK”. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

7. CHECK INPUT SIGNAL FOR TCM.
1.

Lift up the vehicle.

2.

Start the engine.

3.

Warm up until the ATF temperature reaches to 40 — 70°C (104 — 158°F).

4.

Depress the brake pedal, and shift the select lever to “D” range.

5.

Shift the select lever to “P” range.

6.

Stabilize the engine speed at idle.

7.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 0.5 — 1.5 MPa?

8

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

8. CHECK INPUT SIGNAL FOR TCM.
1.

Set the select lever to “D” range.

2.

Release the brake pedal to stabilize the engine speed and front wheel speed.

3.

Read the data of [Actual Gear Ratio] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Gear Ratio] 1.5 — 2.6?

9

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

9. CHECK INPUT SIGNAL FOR TCM.
1.

Set the select lever to “D” range.

2.

Slowly increase the speed to 40 km/h (25 MPH) and keep to a constant speed.

3.

Read the data of [Actual Gear Ratio] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Gear Ratio] 0.5 — 0.9?

10

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

10. DRIVING CHECK BY INSPECTION MODE.
1.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

2.

Execute the inspection mode. TRANSMISSION (DIAGNOSTICS)>Inspection Mode

Does the AT OIL TEMP light blink and is DTC P0757 displayed?

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

Current condition is normal. It is possible that temporary poor contact occurs.

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of shift-down fluid pressure control solenoid and hydraulic circuit characteristics (stuck to high pressure side).

- Judge as NG if the amount of gear rate change per second is equal to or larger than the predetermined value, even though the up-shift command is issued.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Engine speed | 1000 rpm or more
Commanded duty of shift down pressure control solenoid | 0%
Actual pulley ratio∗ | 0.382 or more
| and
| 2.683 or less

∗ Actual pulley ratio: Measured primary pulley shaft speed / Measured secondary pulley shaft speed

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Actual pulley ratio change for 1 second | More than 0.04
Commanded duty of shift up pressure control solenoid | Exceeds 50%

Time needed for diagnosis: 1 s × 10 times

Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0776 PRESSURE CONTROL SOLENOID "B" PERFORMANCE/STUCK OFF
1. —

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

- Engine speed increases abruptly, and cannot accelerate.

- Excessive slippage is felt.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use the check board when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

2

2. CHECK F&R SOLENOID (ACTIVE TEST).
yes

5

no

3

3. CHECK F&R SOLENOID.
yes

7

no

4

4. CHECK HARNESS.
yes

7

no

Perform the instructed procedures.

5. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
6. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
7. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
8. STALL TEST.
no

Perform the instructed procedures.

yes
9. CHECK BY INSPECTION MODE.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Besides DTC P0776, is any of the DTC P0717, P0966, P0967 or P2747 displayed?

Perform the diagnosis according to DTCs other than P0776. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2

2. CHECK F&R SOLENOID (ACTIVE TEST).
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, perform the active test for F&R solenoid. TRANSMISSION (DIAGNOSTICS)>Active Test

Does the indication of 0 → 500 mA appear repeatedly during the active test, and does operating sound emit during indicating 500 mA?

5

3

3. CHECK F&R SOLENOID.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 16 — Transmission body:

Is the resistance approximately 3.5 — 7.1 Ω? (When cold)

7

4

4. CHECK HARNESS.

Check the transmission harness. (Open circuit, short circuit to power supply, short circuit to ground, and poor contact)

Is the check result OK?

7

Repair the harness.

5. CHECK TRANSMISSION FLUID.
1.

Connect the TCM connector.

2.

Check the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

Is the check result OK?

6

Adjust the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

6. CHECK TRANSMISSION FLUID.

Check the condition of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

Is the check result OK?

Return ATF. 7

Check according to the “Corrective action” of ATF (CVTF) “CONDITION CHECK”. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

7. CHECK INPUT SIGNAL FOR TCM.
1.

Lift up the vehicle.

2.

Start the engine.

3.

Warm up until the ATF temperature reaches to 40 — 70°C (104 — 158°F).

4.

Depress the brake pedal, and shift the select lever to “D” range.

5.

Shift the select lever to “P” range.

6.

Stabilize the engine speed at idle.

7.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 0.5 — 1.5 MPa?

8

Perform the diagnosis according to DTC P0841. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0841 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT RANGE/PERFORMANCE

8. STALL TEST.

Perform the stall test. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Stall Test

Is the result of the stall test OK?

9

Replace the transmission assembly if the stall speed is higher than the standard value of the stall test. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

9. CHECK BY INSPECTION MODE.
1.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

2.

Execute the inspection mode. TRANSMISSION (DIAGNOSTICS)>Inspection Mode

Does the AT OIL TEMP light blink and is DTC P0776 displayed?

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

Current condition is normal. It is possible that temporary poor contact occurs.

General description
OUTLINE OF DIAGNOSIS

Diagnosis 1

- Detect the malfunction of transmission forward/reverse clutch pressure solenoid and hydraulic circuit characteristics (stuck to low pressure side).

- Judge as NG if the value calculated by “turbine speed − primary pulley speed” becomes the predetermined value or more, even though the forward/reverse clutch is engaged.

Diagnosis 2

Judge as NG when the turbine speed becomes the predetermined value or larger at starting.

EXECUTION CONDITION

Secondary parameters | Execution condition
Diagnosis 1 12 V battery system voltage Transmission range Measured turbine shaft speed Measured primary pulley shaft speed Commanded forward & reverse clutch pressure control solenoid current Engine speed | 10 V or more Drive 100 rpm or more 100 rpm or more Less than 0.9 A 400 rpm or more
Diagnosis 2 12 V battery system voltage Transmission range Measured primary pulley shaft speed Accelerator pedal position (from ECM) Commanded forward & reverse clutch pressure control solenoid current Engine speed | 10 V or more Drive Less than 100 rpm Exceeds 6% Less than 0.9 A 400 rpm or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Diagnosis 1 ABS∗ (Measured turbine shaft speed − Measured primary pulley shaft speed) | Exceeds rpm values in Table 1
Diagnosis 2 Measured turbine shaft speed | More than 2000 rpm

∗ABS: Absolute value

Table 1

Vehicle speed (calculated from measured secondary pulley shaft speed sensor) (MPH) | 0 | 13 | 25 | 38 | 50 | 63 | 75
ABS (Measured turbine shaft speed − Measured primary pulley shaft speed) (rpm) | 150 | 100 | 100 | 100 | 100 | 100 | 100

Vehicle speed (calculated from measured secondary pulley shaft speed sensor) (MPH) | 88 | 100 | 113 | 125 | 138 | 150 | 159
ABS (Measured turbine shaft speed − Measured primary pulley shaft speed) (rpm) | 100 | 100 | 100 | 100 | 100 | 100 | 100

Time needed for diagnosis: 5 s

Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0801 REVERSE INHIBIT CONTROL CIRCUIT/OPEN

DTC detecting condition:

Immediately at fault recognition

For diagnostic procedures, refer to “DTC B1016 SHIFT LOCK CIRCUIT” in “BODY CONTROL SYSTEM (DIAGNOSTICS)”. BODY CONTROL(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1016 SHIFT LOCK CIRCUIT

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect the malfunction of shift lock solenoid or circuit.

- Judge as NG if abnormal signal from the integrated unit is received, when bus off is not detected and there is no trouble in CAN between the integrated unit.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
None |

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Shift lock solenoid system circuit abnormal (received from BIU) | ON

Time needed for diagnosis: 1 s

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0841 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT RANGE/PERFORMANCE
1. —

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

- Acceleration is poor during standing start.

- Shift control malfunction

- Engine speed increases abruptly.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Before performing diagnosis, record the freeze frame data.

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

2

2. CHECK DTC.
yes

Perform the instructed procedures.

no

3

3. CHECK INPUT SIGNAL FOR TCM.
yes

11

no

4

4. CHECK HARNESS.
no

Perform the instructed procedures.

yes
5. CHECK HARNESS.
no

Perform the instructed procedures.

yes
6. CHECK HARNESS.
no

Perform the instructed procedures.

yes
7. CHECK POWER SUPPLY FOR SECONDARY PRESSURE SENSOR.
no

Perform the instructed procedures.

yes
8. CHECK POWER SUPPLY FOR SECONDARY PRESSURE SENSOR.
no

Perform the instructed procedures.

yes
9. CHECK SECONDARY PRESSURE SENSOR OUTPUT.
yes

Perform the instructed procedures.

no

10

10. CHECK CONNECTOR.
no

Perform the instructed procedures.

yes
11. CHECK TRANSMISSION FLUID.
no

12

yes
12. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
13. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
14. CHECK FREEZE FRAME DATA.
yes

Perform the instructed procedures.

no

15

15. CHECK TCM INPUT SIGNAL (STALL TEST).
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Besides DTC P0841 and P0867, is DTC P0842 or P0843 displayed?

Perform the diagnosis according to DTCs other than P0841 and P0867. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2

2. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Besides DTC P0841 and P0867, is DTC P0746 or P0747 displayed?

Perform the diagnosis according to DTC P0867. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0867 TRANSMISSION FLUID PRESSURE

3

3. CHECK INPUT SIGNAL FOR TCM.
1.

Turn the ignition switch to ON.

2.

Read the data of [secondary pressure sensor voltage.] using Subaru Select Monitor. (While shaking the secondary pressure sensor harness) TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is the value of [secondary pressure sensor voltage.] 0.39 — 0.61 V?

11

4

4. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Disconnect the secondary pressure sensor connector.

4.

Measure the resistance between TCM connector and secondary pressure sensor connector.

Connector & terminal

(T10) No. 2 — (AT6) No. 3:

(T10) No. 5 — (AT6) No. 2:

(T10) No. 33 — (AT6) No. 1:

Is the resistance less than 1 Ω?

5

Repair the open circuit of harness.

5. CHECK HARNESS.

Measure the resistance between TCM connectors.

Connector & terminal

(T10) No. 2 — (T10) No. 33:

(T10) No. 5 — (T10) No. 2:

(T10) No. 33 — (T10) No. 5:

Is the resistance 1 MΩ or more?

6

Repair the short circuit of harness.

6. CHECK HARNESS.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 2 — Transmission body:

(T10) No. 5 — Transmission body:

(T10) No. 33 — Transmission body:

Is the resistance 1 MΩ or more?

7

Repair the short circuit of harness.

7. CHECK POWER SUPPLY FOR SECONDARY PRESSURE SENSOR.
1.

Turn the ignition switch to ON.

2.

Measure the voltage between TCM connectors.

Connector & terminal

(T10) No. 33 (+) — (T10) No. 2 (−):

Is the voltage 4.6 — 5.4 V?

8

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

8. CHECK POWER SUPPLY FOR SECONDARY PRESSURE SENSOR.
1.

Turn the ignition switch to OFF.

2.

Connect the secondary pressure sensor connector.

3.

Turn the ignition switch to ON.

4.

Measure the voltage between TCM connectors.

Connector & terminal

(T10) No. 33 (+) — (T10) No. 2 (−):

Is the voltage 4.6 — 5.4 V?

9

Replace the secondary pressure sensor. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Secondary Pressure Sensor

9. CHECK SECONDARY PRESSURE SENSOR OUTPUT.

Measure the voltage between TCM connectors.

Connector & terminal

(T10) No. 5 (+) — (T10) No. 2 (−):

Is the voltage 0.39 — 0.61 V?

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

10

10. CHECK CONNECTOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Disconnect the secondary pressure sensor connector.

4.

Check the TCM connector (T10) and the secondary pressure sensor connector (AT6).

Is the check result OK?

11

Repair the connector, or replace harness.

11. CHECK TRANSMISSION FLUID.
1.

Connect all connectors.

2.

Check the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

Is the check result OK?

12

Adjust the amount of ATF. 12

12. CHECK INPUT SIGNAL FOR TCM.
1.

Start the engine.

2.

Warm up until the ATF temperature reaches to 40 — 70°C (104 — 158°F).

3.

Depress the brake pedal and move the select lever to each range at an interval of five seconds.

Move the select lever in the following order: “P” → “R” → “N” → “D” → “N” → “R” → “P”.

4.

Stabilize the engine speed at idle.

5.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 0.5 — 1.5 MPa?

13

Replace the secondary pressure sensor. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Secondary Pressure Sensor

13. CHECK INPUT SIGNAL FOR TCM.
1.

Shift the select lever to “P” range.

2.

Keep the engine speed at 3,000 rpm.

3.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 1.5 — 2.5 MPa? And is the difference between the actual oil pressure and the value measured in Step 12 0.2 MPa or more?

14

Replace the secondary pressure sensor. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Secondary Pressure Sensor

14. CHECK FREEZE FRAME DATA.
1.

Turn the ignition switch to OFF.

2.

Check the recorded freeze frame data for DTC P0867. TRANSMISSION (DIAGNOSTICS)>Freeze Frame Data

3.

Apply the values of [Actual Secondary Pressure] and [Secondary Actual Current] recorded in the freeze frame data onto the graph shown in the following figure, and judge if either low-voltage malfunction or high-voltage malfunction occurs.

(A) Actual secondary pressure (MPa)

(B) Secondary actual current (mA)

(C) Low-voltage malfunction

(D) High-voltage malfunction

Symptom that the DTC P0867 illuminates can be classified into 2 patterns.

- Low-voltage malfunction: detected due to insufficient oil pressure

- High-voltage malfunction: detected due to excessive oil pressure

Was the detected symptom low-voltage malfunction?

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

15

15. CHECK TCM INPUT SIGNAL (STALL TEST).
1.

Lift up the vehicle.

2.

Start the engine.

3.

Apply the parking brake.

4.

Set the select lever to “D” range.

5.

Depress the brake pedal firmly.

6.

Slowly open the accelerator fully, and stabilize the engine speed.

7.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is the value of [Actual Secondary Pressure] 6.0 MPa or more?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of transmission secondary pressure sensor function.

- Judge as NG if the voltage of the secondary pressure sensor after the predetermined period of time has elapsed since IG OFF exceeded the predetermined value.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Ignition state | OFF
Measured turbine shaft speed | 400 rpm or less
Transmission fluid temperature | −20 degC or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Measured line pressure sensor input voltage (Line pressure) | More than 0.8 V (Exceeds 570 kPa)

Time needed for diagnosis: 3 s

Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0842 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT LOW
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Shift characteristics malfunction

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK INPUT SIGNAL FOR TCM.
yes

Perform the instructed procedures.

no

2

2. CHECK HARNESS.
no

Perform the instructed procedures.

yes
3. CHECK HARNESS.
no

Perform the instructed procedures.

yes
4. CHECK POWER SUPPLY FOR SECONDARY PRESSURE SENSOR.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK INPUT SIGNAL FOR TCM.
1.

Start the engine.

2.

Warm up until the ATF temperature reaches to 40 — 70°C (104 — 158°F).

3.

Depress the brake pedal, and shift the select lever to “D” range.

4.

Shift the select lever to “P” range.

5.

Stabilize the engine speed at idle.

6.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 0.5 — 1.5 MPa?

Check for poor contact of connector.

2

2. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Disconnect the secondary pressure sensor connector.

4.

Measure the resistance between TCM connector and secondary pressure sensor connector.

Connector & terminal

(T10) No. 2 — (AT6) No. 3:

(T10) No. 5 — (AT6) No. 2:

(T10) No. 33 — (AT6) No. 1:

Is the resistance less than 1 Ω?

3

Repair the open circuit of harness.

3. CHECK HARNESS.

Measure the resistance between TCM connector and chassis ground.

Connector & terminal

(T10) No. 5 — Chassis ground:

(T10) No. 33 — Chassis ground:

Is the resistance 1 MΩ or more?

4

Repair the short circuit of harness.

4. CHECK POWER SUPPLY FOR SECONDARY PRESSURE SENSOR.
1.

Connect the TCM connector.

2.

Turn the ignition switch to ON.

3.

Measure the voltage between secondary pressure sensor connector terminals.

Connector & terminal

(AT6) No. 1 (+) — (AT6) No. 3 (−):

Is the voltage 4.5 V or more?

Replace the secondary pressure sensor. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Secondary Pressure Sensor If the replacement of the sensor do not eliminate the malfunction, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

General description
OUTLINE OF DIAGNOSIS

- Detect the ground short circuit of the transmission secondary pressure sensor.

- Judge as NG if the voltage detected by the transmission secondary pressure sensor is lower than the predetermined value.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Measured line pressure sensor input voltage (Line pressure) | Less than 0.195 V (Less than 0 kPa)

Time needed for diagnosis: 0.5 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0843 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT HIGH
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Shift characteristics malfunction

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK INPUT SIGNAL FOR TCM.
yes

Perform the instructed procedures.

no

2

2. CHECK HARNESS.
no

Perform the instructed procedures.

yes
3. CHECK HARNESS.
yes

Perform the instructed procedures.

no

4

4. CHECK POWER SUPPLY FOR SECONDARY PRESSURE SENSOR.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK INPUT SIGNAL FOR TCM.
1.

Start the engine.

2.

Warm up until the ATF temperature reaches to 40 — 70°C (104 — 158°F).

3.

Depress the brake pedal, and shift the select lever to “D” range.

4.

Shift the select lever to “P” range.

5.

Stabilize the engine speed at idle.

6.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 0.5 — 1.5 MPa?

Check for poor contact of connector.

2

2. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Disconnect the secondary pressure sensor connector.

4.

Turn the ignition switch to ON.

5.

Measure the voltage between TCM connector and chassis ground.

Connector & terminal

(T10) No. 5 (+) — Chassis ground (−):

(T10) No. 33 (+) — Chassis ground (−):

Is the voltage approx. 0 V?

3

Repair the short circuit of harness.

3. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Measure the resistance between TCM connector terminals.

Connector & terminal

(T10) No. 5 — (T10) No. 33:

Is the resistance less than 1 Ω?

Repair the short circuit of harness.

4

4. CHECK POWER SUPPLY FOR SECONDARY PRESSURE SENSOR.
1.

Connect the TCM connector.

2.

Turn the ignition switch to ON.

3.

Measure the voltage between secondary pressure sensor connector terminals.

Connector & terminal

(AT6) No. 1 (+) — (AT6) No. 3 (−):

Is the voltage 4.5 V or more?

Replace the secondary pressure sensor. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Secondary Pressure Sensor If the replacement of the sensor do not eliminate the malfunction, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

General description
OUTLINE OF DIAGNOSIS

- Detect short circuit to power supply or open circuit of the transmission secondary pressure sensor 5 V system.

- Judge as NG if the voltage detected by the transmission secondary pressure sensor is higher than the predetermined value.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Measured line pressure sensor input voltage (Line pressure) | More than 4.883 V (Exceeds 8200 kPa)

Time needed for diagnosis: 1.5 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0867 TRANSMISSION FLUID PRESSURE
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Acceleration is poor during standing start.

- Shift control malfunction

- Engine speed increases abruptly.

- CVT chain slippage

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Before performing diagnosis, record the freeze frame data.

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

4

no

2

2. CHECK DTC.
no

Perform the instructed procedures.

yes
3. CHECK DTC.
no

Perform the instructed procedures.

yes
4. CHECK SECONDARY SOLENOID (ACTIVE TEST).
yes

7

no

5

5. CHECK SECONDARY SOLENOID.
yes

7

no

6

6. CHECK HARNESS.
no

Perform the instructed procedures.

yes
7. CHECK INPUT SIGNAL FOR TCM.
yes

15

no

8

8. CHECK HARNESS.
no

Perform the instructed procedures.

yes
9. CHECK HARNESS.
no

Perform the instructed procedures.

yes
10. CHECK HARNESS.
no

Perform the instructed procedures.

yes
11. CHECK POWER SUPPLY FOR SECONDARY PRESSURE SENSOR.
no

Perform the instructed procedures.

yes
12. CHECK POWER SUPPLY FOR SECONDARY PRESSURE SENSOR.
no

Perform the instructed procedures.

yes
13. CHECK SECONDARY PRESSURE SENSOR OUTPUT.
no

Perform the instructed procedures.

yes
14. CHECK CONNECTOR.
no

Perform the instructed procedures.

yes
15. CHECK TRANSMISSION FLUID.
no

16

yes
16. CHECK TRANSMISSION FLUID.
no

17

yes
17. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
18. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
19. CHECK FREEZE FRAME DATA.
yes

Perform the instructed procedures.

no

20

20. CHECK TCM INPUT SIGNAL (STALL TEST).
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is only DTC P0867 displayed?

4

2

2. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC P0841 displayed?

3

Perform the diagnosis according to DTCs other than P0867 and P0841. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST After the diagnosis, start the engine, and drive for 20 minutes in any driving pattern. (Include driving at a constant legal speed (for 20 seconds) at least once.) After driving, repeat the step 1.

3. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC P0746 or P0747 displayed?

4

Perform the diagnosis according to DTC P0841. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0841 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT RANGE/PERFORMANCE

4. CHECK SECONDARY SOLENOID (ACTIVE TEST).
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, perform the active test for secondary solenoid. TRANSMISSION (DIAGNOSTICS)>Active Test

Does the indication of 0 → 500 mA appear repeatedly during the active test, and does operating sound emit during indicating 500 mA?

7

5

5. CHECK SECONDARY SOLENOID.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 32 — Transmission body:

Is the resistance approximately 4.8 — 8.4 Ω? (When cold)

7

6

6. CHECK HARNESS.

Check the transmission harness. (Open circuit, short circuit to power supply, short circuit to ground, and poor contact)

Is the check result OK?

7

Repair the harness.

7. CHECK INPUT SIGNAL FOR TCM.
1.

Connect the TCM connector.

2.

Turn the ignition switch to ON.

3.

Read the data of [secondary pressure sensor voltage.] using Subaru Select Monitor. (While shaking the secondary pressure sensor harness) TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is the value of [secondary pressure sensor voltage.] 0.39 — 0.61 V?

15

8

8. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Disconnect the secondary pressure sensor connector.

4.

Measure the resistance between TCM connector and secondary pressure sensor connector.

Connector & terminal

(T10) No. 2 — (AT6) No. 3:

(T10) No. 5 — (AT6) No. 2:

(T10) No. 33 — (AT6) No. 1:

Is the resistance less than 1 Ω?

9

Repair the open circuit of harness.

9. CHECK HARNESS.

Measure the resistance between TCM connectors.

Connector & terminal

(T10) No. 2 — (T10) No. 33:

(T10) No. 5 — (T10) No. 2:

(T10) No. 33 — (T10) No. 5:

Is the resistance 1 MΩ or more?

10

Repair the short circuit of harness.

10. CHECK HARNESS.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 2 — Transmission body:

(T10) No. 5 — Transmission body:

(T10) No. 33 — Transmission body:

Is the resistance 1 MΩ or more?

11

Repair the short circuit of harness.

11. CHECK POWER SUPPLY FOR SECONDARY PRESSURE SENSOR.
1.

Turn the ignition switch to ON.

2.

Measure the voltage between TCM connectors.

Connector & terminal

(T10) No. 33 (+) — (T10) No. 2 (−):

Is the voltage 4.6 — 5.4 V?

12

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

12. CHECK POWER SUPPLY FOR SECONDARY PRESSURE SENSOR.
1.

Turn the ignition switch to OFF.

2.

Connect the secondary pressure sensor connector.

3.

Turn the ignition switch to ON.

4.

Measure the voltage between TCM connectors.

Connector & terminal

(T10) No. 33 (+) — (T10) No. 2 (−):

Is the voltage 4.6 — 5.4 V?

13

Replace the secondary pressure sensor. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Secondary Pressure Sensor

13. CHECK SECONDARY PRESSURE SENSOR OUTPUT.

Measure the voltage between TCM connectors.

Connector & terminal

(T10) No. 5 (+) — (T10) No. 2 (−):

Is the voltage 0.39 — 0.61 V?

14

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

14. CHECK CONNECTOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Disconnect the secondary pressure sensor connector.

4.

Check the TCM connector (T10) and the secondary pressure sensor connector (AT6).

Is the check result OK?

15

Repair the connector, or replace harness.

15. CHECK TRANSMISSION FLUID.

Check the condition of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

Is the check result OK?

Return ATF. 16

Replace the ATF. 16

16. CHECK TRANSMISSION FLUID.
1.

Connect all connectors.

2.

Check the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

Is the check result OK?

17

Adjust the amount of ATF. 17

17. CHECK INPUT SIGNAL FOR TCM.
1.

Lift up the vehicle.

2.

Start the engine.

3.

Warm up until the ATF temperature reaches to 40 — 70°C (104 — 158°F).

4.

Depress the brake pedal and move the select lever to each range at an interval of five seconds.

Move the select lever in the following order: “P” → “R” → “N” → “D” → “N” → “R” → “P”.

5.

Stabilize the engine speed at idle.

6.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 0.5 — 1.5 MPa?

18

Replace the secondary pressure sensor. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Secondary Pressure Sensor

18. CHECK INPUT SIGNAL FOR TCM.
1.

Shift the select lever to “P” range.

2.

Keep the engine speed at 3,000 rpm.

3.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 1.5 — 2.5 MPa? And is the difference of the actual oil pressure between the value measured in Step 17 0.2 MPa or more?

19

Replace the secondary pressure sensor. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Secondary Pressure Sensor

19. CHECK FREEZE FRAME DATA.
1.

Turn the ignition switch to OFF.

2.

Check the recorded freeze frame data for DTC P0867. TRANSMISSION (DIAGNOSTICS)>Freeze Frame Data

3.

Apply the values of [Actual Secondary Pressure] and [Secondary Actual Current] recorded in the freeze frame data onto the graph shown in the following figure, and judge if either low-voltage malfunction or high-voltage malfunction occurs.

(A) Actual secondary pressure (MPa)

(B) Secondary actual current (mA)

(C) Low-voltage malfunction

(D) High-voltage malfunction

Symptom that the DTC P0867 illuminates can be classified into 2 patterns.

- Low-voltage malfunction: detected due to insufficient oil pressure

- High-voltage malfunction: detected due to excessive oil pressure

Was the detected symptom low-voltage malfunction?

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

20

20. CHECK TCM INPUT SIGNAL (STALL TEST).
1.

Apply the parking brake.

2.

Set the select lever to “D” range.

3.

Depress the brake pedal firmly.

4.

Slowly open the accelerator fully, and stabilize the engine speed.

5.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Do not perform a stall test for over 5 seconds at a time.

Is the value of [Actual Secondary Pressure] 6.0 MPa or more?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of transmission line pressure control function.

- Judge as NG if a discrepancy between the target secondary oil pressure (as internal data) and the detected value of the secondary pressure sensor becomes the specified value or more.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Engine speed | At or more than rpm values in Table 1

Table 1

Target line pressure (kPa) | 0 | 500 | 1000 | 1500 | 2000 | 3000 | 4000 | 5000 | 6000
Engine speed (rpm) | 1049 | 1189 | 1328 | 1467 | 1610 | 1916 | 2535 | 8000 | 8000

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
ABS∗ (Target line pressure − Measured line pressure) | More than 500 kPa

∗ABS ∗ Absolute value

Time needed for diagnosis: 5 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0890 TCM POWER RELAY SENSE CIRCUIT LOW
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Improper gear shifting

Wiring diagram:

DC power supply circuit WIRING SYSTEM>Power Supply Circuit>WIRING DIAGRAM

CVT control system WIRING SYSTEM>CVT Control System

Engine electrical system WIRING SYSTEM>Engine Electrical System

- Use the check board when measuring the TCM/ECM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure.

1. CHECK HARNESS.
no

Perform the instructed procedures.

yes
2. CHECK HARNESS.
no

Perform the instructed procedures.

yes
3. CHECK HARNESS.
no

Perform the instructed procedures.

yes
4. CHECK RELAY POWER SUPPLY.
no

Perform the instructed procedures.

yes
5. CHECK MAIN RELAY.
no

Perform the instructed procedures.

yes
6. CHECK INPUT SIGNAL FOR TCM.
yes

Perform the instructed procedures.

no

7

7. CHECK MAIN RELAY.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK HARNESS.
1.

Disconnect the TCM connector.

2.

Remove the main relay.

3.

Measure the resistance between TCM connector and M/B.

Connector & terminal

(T10) No. 8 — (M/B) No. 3:

(T10) No. 24 — (M/B) No. 3:

(T10) No. 40 — (M/B) No. 3:

Is the resistance less than 1 Ω?

2

Repair the open circuit of harness.

2. CHECK HARNESS.
1.

Disconnect the ECM connector.

2.

Measure the resistance between ECM connector and M/B.

Connector & terminal

(B134) No. 12 — (M/B) No. 4:

Is the resistance less than 1 Ω?

3

Repair the open circuit of harness.

3. CHECK HARNESS.

Measure the resistance between TCM connector and chassis ground.

Connector & terminal

(T10) No. 8 — Chassis ground:

(T10) No. 24 — Chassis ground:

(T10) No. 40 — Chassis ground:

Is the resistance 1 MΩ or more?

4

Repair the short circuit of harness.

4. CHECK RELAY POWER SUPPLY.

Measure the voltage between M/B and chassis ground.

Connector & terminal

(M/B) No. 1 (+) — Chassis ground (−):

(M/B) No. 2 (+) — Chassis ground (−):

Is the voltage 10 V or more?

5

Repair the open or short circuit of harness.

5. CHECK MAIN RELAY.
1.

Turn the ignition switch to OFF.

2.

Check the main relay. FUEL INJECTION (FUEL SYSTEMS)(H4DO)>Main Relay>INSPECTION

Is the check result OK?

6

Replace the main relay.

6. CHECK INPUT SIGNAL FOR TCM.
1.

Connect all connectors.

2.

Install the main relay.

3.

Read the data of [Control module voltage] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Control module voltage] 10 V or more?

Current condition is normal. Check for poor contact in connectors or harnesses, and repair the defective part.

7

7. CHECK MAIN RELAY.
1.

Turn the ignition switch to OFF.

2.

Replace the main relay.

3.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

4.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC P0890 displayed?

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

The original main relay is defective.

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of transmission fluid pressure solenoid drive power supply relay circuit.

- Judge as NG if the transmission fluid pressure solenoid drive power supply voltage is lower than the predetermined value.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more
Ignition state | Run or Crank

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Measured TCM input voltage which is supplied from 12 V battery system through the TCM Power Relay | Less than 2 V

Time needed for diagnosis: 0.5 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0951 AUTO SHIFT MANUAL CONTROL CIRCUIT RANGE/PERFORMANCE
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Manual mode can not be set.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK HARNESS.
no

Perform the instructed procedures.

yes
2. CHECK MANUAL MODE SWITCH.
no

Perform the instructed procedures.

yes
3. CHECK MANUAL MODE SWITCH.
no

Perform the instructed procedures.

yes
4. CHECK HARNESS.
no

Perform the instructed procedures.

yes
5. CHECK HARNESS.
no

Perform the instructed procedures.

yes
6. CHECK INPUT SIGNAL FOR TCM.
yes

Perform the instructed procedures.

no

7

7. CHECK FOR POOR CONTACT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the manual mode switch connector.

3.

Measure the resistance between manual mode switch connector and chassis ground.

Connector & terminal

(i44) No. 8 — Chassis ground:

Is the resistance less than 1 Ω?

2

Repair the open circuit of harness.

2. CHECK MANUAL MODE SWITCH.

Measure the resistance between manual mode switch terminals.

Connector & terminal

No. 7 — No. 8:

Is the resistance 1 MΩ or more?

3

Replace the select lever assembly. CONTROL SYSTEMS>Select Lever

3. CHECK MANUAL MODE SWITCH.
1.

Shift the select lever to manual mode.

2.

Measure the resistance between manual mode switch terminals.

Connector & terminal

No. 7 — No. 8:

Is the resistance less than 1 Ω?

4

Replace the select lever assembly. CONTROL SYSTEMS>Select Lever

4. CHECK HARNESS.
1.

Disconnect the TCM connector.

2.

Measure the resistance between TCM connector and manual mode switch connector.

Connector & terminal

(T10) No. 20 — (i44) No. 7:

Is the resistance less than 1 Ω?

5

Repair the open circuit of harness or poor contact of connector.

5. CHECK HARNESS.

Measure the resistance between manual mode switch connector and chassis ground.

Connector & terminal

(i44) No. 7 — Chassis ground:

Is the resistance 1 MΩ or more?

6

Repair the short circuit of harness.

6. CHECK INPUT SIGNAL FOR TCM.
1.

Connect all connectors.

2.

Turn the ignition switch to ON.

3.

Set the select lever to “D” range.

4.

Read the data of [Tiptronic Mode Switch] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Does [Tiptronic Mode Switch] display “ON” with select lever in manual mode, and “OFF” with select lever in other than manual mode?

Current condition is normal.

7

7. CHECK FOR POOR CONTACT.

Is there poor contact of the manual mode switch circuit?

Repair the poor contact.

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

General description
OUTLINE OF DIAGNOSIS

- Detect the GND-output short (ground-fault) in manual SW circuit.

- Judge as NG if the manual SW is ON in P, R or N range.

EXECUTION CONDITION

Secondary parameters | Execution condition
D range SW | OFF

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Manual SW | ON

Time needed for diagnosis: 5 s

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0961 PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT RANGE/PERFORMANCE
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Acceleration is poor during standing start.

- Shift control malfunction

- Engine speed increases abruptly.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

2

2. CHECK SECONDARY SOLENOID (ACTIVE TEST).
no

4

yes
3. CHECK FOR POOR CONTACT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

4. CHECK SECONDARY SOLENOID.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Besides DTC P0961, is DTC P0962 or P0963 displayed?

Perform the diagnosis according to DTCs other than P0961. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2

2. CHECK SECONDARY SOLENOID (ACTIVE TEST).
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, perform the active test for secondary solenoid. TRANSMISSION (DIAGNOSTICS)>Active Test

Is 300 → 500 → 700 mA indicated at the active test, and does [Secondary Actual Current] follow [Secondary Set Current]?

3

4

3. CHECK FOR POOR CONTACT.

Check for poor contact of harness and connector between TCM and secondary solenoid.

Is there poor contact?

Repair the poor contact of harness and connector.

Recheck the poor contact of harness and connector. Replace the TCM if no fault is found. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

4. CHECK SECONDARY SOLENOID.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 32 — Transmission body:

Is the resistance approximately 4.8 — 8.4 Ω? (When cold)

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Repair or replace the harness.

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of the transmission secondary solenoid drive circuit.

- Judge as NG when the deviation between target current and actual current of the transmission secondary solenoid becomes equal to or larger than the predetermined value.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Diagnosis 1 ABS∗ (Target line pressure control solenoid valve current − Measured line pressure control solenoid valve current) | Exceeds 0.2 A
Diagnosis 2 Measured line pressure control solenoid valve current | Exceeds 1.05 A and 1.6 A or less

∗ ABS: Absolute value

Time needed for diagnosis: 1.2 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0962 PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT LOW
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Engine speed increases abruptly, and cannot start.

- Engine speed increases abruptly during driving.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK INPUT SIGNAL FOR TCM.
yes

Perform the instructed procedures.

no

2

2. CHECK HARNESS.
no

Perform the instructed procedures.

yes
3. CHECK SECONDARY SOLENOID.
yes

Perform the instructed procedures.

no

4

4. CHECK HARNESS INSIDE TRANSMISSION.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK INPUT SIGNAL FOR TCM.
1.

After driving with warm up condition, park the vehicle while depressing the brake pedal at “N” range.

2.

Using Subaru Select Monitor, read the data of [Secondary Set Current] and [Secondary Actual Current]. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Do [Secondary Set Current] and [Secondary Actual Current] almost match?

Check for poor contact of connector.

2

2. CHECK HARNESS.

Start work after ATF cools down.

1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Remove the transmission valve cover.

4.

Disconnect the control valve body connector.

5.

Measure the resistance between TCM connector and chassis ground.

Connector & terminal

(T10) No. 32 — Chassis ground:

Is the resistance 1 MΩ or more?

3

Repair the short circuit of harness.

3. CHECK SECONDARY SOLENOID.
1.

Connect the connector for control valve body.

2.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 32 — Transmission body:

Is the resistance approximately 4.8 — 8.4 Ω? (When cold)

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

4

4. CHECK HARNESS INSIDE TRANSMISSION.

Check for the harness pinch, damage.

Is the check result OK?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission harness.

General description
OUTLINE OF DIAGNOSIS

- Detect the ground short of the transmission secondary solenoid drive circuit.

- Judge as NG when an abnormal signal is received from the solenoid driver IC of the transmission secondary solenoid drive circuit.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Signal of malfunction from solenoid driver IC∗ | ON
As defined by: |
Measured line pressure control solenoid valve current, more than 1.6 A |

∗IC: Integrated circuit

Time needed for diagnosis: 0.5 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0963 PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT HIGH
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Engine speed increases abruptly, and cannot start.

- Engine speed increases abruptly during driving.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK INPUT SIGNAL FOR TCM.
yes

Perform the instructed procedures.

no

2

2. CHECK HARNESS.
no

Perform the instructed procedures.

yes
3. CHECK HARNESS.
no

Perform the instructed procedures.

yes
4. CHECK SECONDARY SOLENOID.
yes

Perform the instructed procedures.

no

5

5. CHECK HARNESS INSIDE TRANSMISSION.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK INPUT SIGNAL FOR TCM.
1.

After driving with warm up condition, park the vehicle while depressing the brake pedal at “N” range.

2.

Using Subaru Select Monitor, read the data of [Secondary Set Current] and [Secondary Actual Current]. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Do [Secondary Set Current] and [Secondary Actual Current] almost match?

Check for poor contact of connector.

2

2. CHECK HARNESS.

Start work after ATF cools down.

1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Remove the transmission valve cover.

4.

Disconnect the control valve body connector.

5.

Measure the resistance between TCM connector and transmission connectors.

Connector & terminal

(T10) No. 32 — (T11) No. 3:

Is the resistance less than 1 Ω?

3

Repair the open circuit of harness.

3. CHECK HARNESS.
1.

Turn the ignition switch to ON.

2.

Measure the voltage between TCM connector and chassis ground.

Connector & terminal

(T10) No. 32 (+) — Chassis ground (−):

Is the voltage approx. 0 V?

4

Repair the short circuit of harness.

4. CHECK SECONDARY SOLENOID.
1.

Connect the connector for control valve body.

2.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 32 — Transmission body:

Is the resistance approximately 4.8 — 8.4 Ω? (When cold)

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

5

5. CHECK HARNESS INSIDE TRANSMISSION.

Check for the harness pinch, damage.

Is the check result OK?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission harness.

General description
OUTLINE OF DIAGNOSIS

- Detect short circuit to power supply or open circuit of the transmission secondary solenoid drive circuit.

- Judge as NG when an abnormal signal is received from the solenoid driver IC of the transmission secondary solenoid drive circuit.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more
Commanded line pressure control solenoid valve current | 0.2 A or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Signal of malfunction from solenoid driver IC∗ | ON
As defined by: |
Measured line pressure control solenoid valve current, less than 5.9 mA |

∗IC: Integrated circuit

Time needed for diagnosis: 0.5 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0965 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT RANGE/PERFORMANCE
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Engine speed increases abruptly, and cannot accelerate.

- Excessive slippage is felt.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

2

2. CHECK F&R SOLENOID (ACTIVE TEST).
no

4

yes
3. CHECK FOR POOR CONTACT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

4. CHECK F&R SOLENOID.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Besides DTC P0965, is any of the DTC P0717, P0966, P0967 or P2747 displayed?

Perform the diagnosis according to DTCs other than P0965. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2

2. CHECK F&R SOLENOID (ACTIVE TEST).
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, perform the active test for F&R solenoid. TRANSMISSION (DIAGNOSTICS)>Active Test

Is 300 → 500 → 700 mA indicated at the active test, and does [Actual Forward & Reverse Linear Solenoid Current] follow [Commanded Forward & Reverse Linear Solenoid Current]?

3

4

3. CHECK FOR POOR CONTACT.

Check for poor contact of harness and connector between TCM and F&R solenoid.

Is there poor contact?

Repair the poor contact of harness and connector.

Recheck the poor contact of harness and connector. Replace the TCM if no fault is found. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

4. CHECK F&R SOLENOID.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 16 — Transmission body:

Is the resistance approximately 3.5 — 7.1 Ω? (When cold)

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Repair or replace the harness.

General description
OUTLINE OF DIAGNOSIS

Diagnosis 1

- Detect the malfunction of transmission forward/reverse clutch pressure solenoid drive circuit characteristics.

- Judge as NG when the deviation between set current and actual current of the transmission forward/reverse clutch pressure solenoid drive circuit becomes equal to or larger than the predetermined value.

Diagnosis 2

- Detect the malfunction of transmission forward/reverse clutch pressure solenoid drive circuit characteristics.

- Judge as NG when the transmission forward/reverse clutch pressure solenoid drive current is within the predetermined value.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Diagnosis 1 ABS∗ (Target forward & reverse clutch pressure control solenoid current − Measured forward & reverse clutch pressure control solenoid current) | Exceeds 0.2 A
Diagnosis 2 Measured forward & reverse clutch pressure control solenoid current | Exceeds 1.08 A and 1.6 A or less

∗ ABS: Absolute value

Time needed for diagnosis: 1.2 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0966 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT LOW
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Excessive shift shock

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK INPUT SIGNAL FOR TCM.
yes

Perform the instructed procedures.

no

2

2. CHECK HARNESS.
no

Perform the instructed procedures.

yes
3. CHECK F&R SOLENOID.
yes

Perform the instructed procedures.

no

4

4. CHECK HARNESS INSIDE TRANSMISSION.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK INPUT SIGNAL FOR TCM.
1.

After driving with warm up condition, park the vehicle while depressing the brake pedal at “D” range.

2.

Using Subaru Select Monitor, read the data of [Commanded Forward & Reverse Linear Solenoid Current] and [Actual Forward & Reverse Linear Solenoid Current]. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Do [Commanded Forward & Reverse Linear Solenoid Current] and [Actual Forward & Reverse Linear Solenoid Current] almost match?

Check for poor contact of connector.

2

2. CHECK HARNESS.

Start work after ATF cools down.

1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Remove the transmission valve cover.

4.

Disconnect the control valve body connector.

5.

Measure the resistance between TCM connector and chassis ground.

Connector & terminal

(T10) No. 16 — Chassis ground:

Is the resistance 1 MΩ or more?

3

Repair the short circuit of harness.

3. CHECK F&R SOLENOID.
1.

Connect the connector for control valve body.

2.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 16 — Transmission body:

Is the resistance approximately 3.5 — 7.1 Ω? (When cold)

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

4

4. CHECK HARNESS INSIDE TRANSMISSION.

Check for the harness pinch, damage.

Is the check result OK?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission harness.

General description
OUTLINE OF DIAGNOSIS

- Detect the short circuit to ground in transmission forward/reverse clutch pressure solenoid circuit.

- Judge as NG when an abnormal signal is received from the solenoid driver IC of the transmission forward/reverse clutch pressure solenoid drive circuit.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Signal of malfunction from solenoid driver IC∗ | ON
As defined by: |
Measured forward & reverse clutch pressure control solenoid current, more than 1.6 A |

∗IC: Integrated circuit

Time needed for diagnosis: 1 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0967 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT HIGH
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Engine speed increases abruptly, and cannot start.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK INPUT SIGNAL FOR TCM.
yes

Perform the instructed procedures.

no

2

2. CHECK HARNESS.
no

Perform the instructed procedures.

yes
3. CHECK HARNESS.
no

Perform the instructed procedures.

yes
4. CHECK F&R SOLENOID.
yes

Perform the instructed procedures.

no

5

5. CHECK HARNESS INSIDE TRANSMISSION.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK INPUT SIGNAL FOR TCM.
1.

After driving with warm up condition, park the vehicle while depressing the brake pedal at “D” range.

2.

Using Subaru Select Monitor, read the data of [Commanded Forward & Reverse Linear Solenoid Current] and [Actual Forward & Reverse Linear Solenoid Current]. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Do [Commanded Forward & Reverse Linear Solenoid Current] and [Actual Forward & Reverse Linear Solenoid Current] almost match?

Check for poor contact of connector.

2

2. CHECK HARNESS.

Start work after ATF cools down.

1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Remove the transmission valve cover.

4.

Disconnect the control valve body connector.

5.

Measure the resistance between TCM connector and control valve body connector.

Connector & terminal

(T10) No. 16 — (T11) No. 4:

Is the resistance less than 1 Ω?

3

Repair the open circuit of harness.

3. CHECK HARNESS.
1.

Turn the ignition switch to ON.

2.

Measure the voltage between TCM connector and chassis ground.

Connector & terminal

(T10) No. 16 (+) — Chassis ground (−):

Is the voltage approx. 0 V?

4

Repair the short circuit of harness.

4. CHECK F&R SOLENOID.
1.

Connect the connector for control valve body.

2.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 16 — Transmission body:

Is the resistance approximately 3.5 — 7.1 Ω? (When cold)

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

5

5. CHECK HARNESS INSIDE TRANSMISSION.

Check for the harness pinch, damage.

Is the check result OK?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission harness.

General description
OUTLINE OF DIAGNOSIS

- Detect open circuit or short circuit to power supply in the transmission forward/reverse clutch pressure solenoid circuit.

- Judge as NG if the transmission forward/reverse clutch pressure solenoid drive current is lower than the predetermined value.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more
Target forward & reverse clutch pressure control solenoid current | 0.1 A or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Signal of malfunction from solenoid driver IC∗ | ON
As defined by: |
Measured forward & reverse clutch pressure control solenoid current less than 5.9 mA |

∗IC: Integrated circuit

Time needed for diagnosis: 1 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0970 PRESSURE CONTROL SOLENOID "C" CONTROL CIRCUIT LOW
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Drivability getting worse.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK HARNESS.
no

Perform the instructed procedures.

yes
2. CHECK AWD SOLENOID.
yes

Perform the instructed procedures.

no

3

3. CHECK HARNESS INSIDE TRANSMISSION.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK HARNESS.

Start work after ATF cools down.

1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Remove the transmission valve cover.

4.

Disconnect the control valve body connector.

5.

Measure the resistance between TCM connector and chassis ground.

Connector & terminal

(T10) No. 48 — Chassis ground:

Is the resistance 1 MΩ or more?

2

Repair the short circuit of harness.

2. CHECK AWD SOLENOID.
1.

Connect the connector for control valve body.

2.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 48 — Transmission body:

Is the resistance approximately 1.5 — 4.9 Ω? (When cold)

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

3

3. CHECK HARNESS INSIDE TRANSMISSION.

Check for the harness pinch, damage.

Is the check result OK?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission harness.

General description
OUTLINE OF DIAGNOSIS

- Detect the ground short circuit in transfer solenoid circuit.

- Judge as NG if a ground short circuit is detected more than 10 times via the detection circuit for the transfer solenoid drive circuit.

EXECUTION CONDITION

Secondary parameters | Execution condition
Target duty cycle | 0%

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Malfunction signal from solenoid driver IC∗ | 10 counts or more

∗IC: Integrated circuit

Time needed for diagnosis: Immediately

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0971 PRESSURE CONTROL SOLENOID "C" CONTROL CIRCUIT HIGH
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Tight corner braking phenomenon occurs.

- Drivability getting worse.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK HARNESS.
no

Perform the instructed procedures.

yes
2. CHECK HARNESS.
no

Perform the instructed procedures.

yes
3. CHECK AWD SOLENOID.
yes

Perform the instructed procedures.

no

4

4. CHECK HARNESS INSIDE TRANSMISSION.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK HARNESS.

Start work after ATF cools down.

1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Remove the transmission valve cover.

4.

Disconnect the control valve body connector.

5.

Measure the resistance between TCM connector and control valve body connector.

Connector & terminal

(T10) No. 48 — (T11) No. 10:

Is the resistance less than 1 Ω?

2

Repair the open circuit of harness.

2. CHECK HARNESS.
1.

Turn the ignition switch to ON.

2.

Measure the voltage between TCM connector and chassis ground.

Connector & terminal

(T10) No. 48 (+) — Chassis ground (−):

Is the voltage approx. 0 V?

3

Repair the short circuit of harness.

3. CHECK AWD SOLENOID.
1.

Connect the connector for control valve body.

2.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 48 — Transmission body:

Is the resistance approximately 1.5 — 4.9 Ω? (When cold)

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

4

4. CHECK HARNESS INSIDE TRANSMISSION.

Check for the harness pinch, damage.

Is the check result OK?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission harness.

General description
OUTLINE OF DIAGNOSIS

- Detect open circuit or short circuit to power supply in the transfer solenoid circuit.

- Judge as NG if an open circuit or a short circuit to ground is detected more than 10 times via the detection circuit in the transfer solenoid drive circuit.

EXECUTION CONDITION

Secondary parameters | Execution condition
Target duty cycle | 100%

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Malfunction signal from solenoid driver IC∗ | 10 counts or more

∗IC: Integrated circuit

Time needed for diagnosis: Immediately

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0973 SHIFT SOLENOID "A" CONTROL CIRCUIT LOW
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Gear is not changed. (No up-shift)

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK HARNESS.
no

Perform the instructed procedures.

yes
2. CHECK PRIMARY UP SOLENOID.
yes

Perform the instructed procedures.

no

3

3. CHECK HARNESS INSIDE TRANSMISSION.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK HARNESS.

Start work after ATF cools down.

1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Remove the transmission valve cover.

4.

Disconnect the control valve body connector.

5.

Measure the resistance between TCM connector and chassis ground.

Connector & terminal

(T10) No. 47 — Chassis ground:

Is the resistance 1 MΩ or more?

2

Repair the short circuit of harness.

2. CHECK PRIMARY UP SOLENOID.
1.

Connect the connector for control valve body.

2.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 47 — Transmission body:

Is the resistance approximately 10 — 14.2 Ω? (When cold)

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

3

3. CHECK HARNESS INSIDE TRANSMISSION.

Check for the harness pinch, damage.

Is the check result OK?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission harness.

General description
OUTLINE OF DIAGNOSIS

- Detect the ground short of the shift-up fluid pressure control solenoid drive circuit.

- Judge as NG when an abnormal signal is received from the solenoid driver IC of the shift-up fluid pressure control solenoid drive circuit.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more
Commanded duty of shift up pressure control solenoid | 100%

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Signal of malfunction from solenoid driver IC∗ | ON
As defined by: |
Measured shift up pressure control solenoid voltage 0.8 V or less |

∗IC: Integrated circuit

Time needed for diagnosis: 0.2 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0974 SHIFT SOLENOID "A" CONTROL CIRCUIT HIGH
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Gear is not changed. (No up-shift)

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK HARNESS.
no

Perform the instructed procedures.

yes
2. CHECK HARNESS.
no

Perform the instructed procedures.

yes
3. CHECK PRIMARY UP SOLENOID.
yes

Perform the instructed procedures.

no

4

4. CHECK HARNESS INSIDE TRANSMISSION.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK HARNESS.

Start work after ATF cools down.

1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Remove the transmission valve cover.

4.

Disconnect the control valve body connector.

5.

Measure the resistance between TCM connector and control valve body connector.

Connector & terminal

(T10) No. 47 — (T11) No. 2:

Is the resistance less than 1 Ω?

2

Repair the open circuit of harness.

2. CHECK HARNESS.
1.

Turn the ignition switch to ON.

2.

Measure the voltage between TCM connector and chassis ground.

Connector & terminal

(T10) No. 47 (+) — Chassis ground (−):

Is the voltage approx. 0 V?

3

Repair the short circuit of harness.

3. CHECK PRIMARY UP SOLENOID.
1.

Connect the connector for control valve body.

2.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 47 — Transmission body:

Is the resistance approximately 10 — 14.2 Ω? (When cold)

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

4

4. CHECK HARNESS INSIDE TRANSMISSION.

Check for the harness pinch, damage.

Is the check result OK?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission harness.

General description
OUTLINE OF DIAGNOSIS

- Detect short circuit to power supply or open circuit of the shift-up fluid pressure control solenoid drive circuit.

- Judge as NG when an abnormal signal is received from the solenoid driver IC of the shift-up fluid pressure control solenoid drive circuit.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more
Commanded duty of shift up pressure control solenoid | 0%

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Signal of malfunction from solenoid driver IC∗ | ON
As defined by: |
Measured shift up pressure control solenoid voltage 2.5 V or more |

∗IC: Integrated circuit

Time needed for diagnosis: 0.2 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0976 SHIFT SOLENOID "B" CONTROL CIRCUIT LOW
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Gear is not changed. (No down-shift)

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK HARNESS.
no

Perform the instructed procedures.

yes
2. CHECK PRIMARY DOWN SOLENOID.
yes

Perform the instructed procedures.

no

3

3. CHECK HARNESS INSIDE TRANSMISSION.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK HARNESS.

Start work after ATF cools down.

1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Remove the transmission valve cover.

4.

Disconnect the control valve body connector.

5.

Measure the resistance between TCM connector and chassis ground.

Connector & terminal

(T10) No. 30 — Chassis ground:

Is the resistance 1 MΩ or more?

2

Repair the short circuit of harness.

2. CHECK PRIMARY DOWN SOLENOID.
1.

Connect the connector for control valve body.

2.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 30 — Transmission body:

Is the resistance approximately 10 — 14.2 Ω? (When cold)

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

3

3. CHECK HARNESS INSIDE TRANSMISSION.

Check for the harness pinch, damage.

Is the check result OK?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission harness.

General description
OUTLINE OF DIAGNOSIS

- Detect the ground short of the shift-down fluid pressure control solenoid drive circuit.

- Judge as NG when an abnormal signal is received from the solenoid driver IC of the shift-down fluid pressure control solenoid drive circuit.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more
Commanded duty of shift down pressure control solenoid | 100%

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Signal of malfunction from solenoid driver IC∗ | ON
As defined by: |
Measured shift down pressure control solenoid voltage 0.8 V or less |

∗IC: Integrated circuit

Time needed for diagnosis: 0.2 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0977 SHIFT SOLENOID "B" CONTROL CIRCUIT HIGH
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Gear is not changed. (No down-shift)

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK HARNESS.
no

Perform the instructed procedures.

yes
2. CHECK HARNESS.
no

Perform the instructed procedures.

yes
3. CHECK PRIMARY DOWN SOLENOID.
yes

Perform the instructed procedures.

no

4

4. CHECK HARNESS INSIDE TRANSMISSION.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK HARNESS.

Start work after ATF cools down.

1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Remove the transmission valve cover.

4.

Disconnect the control valve body connector.

5.

Measure the resistance between TCM connector and control valve body connector.

Connector & terminal

(T10) No. 30 — (T11) No. 7:

Is the resistance less than 1 Ω?

2

Repair the open circuit of harness.

2. CHECK HARNESS.
1.

Turn the ignition switch to ON.

2.

Measure the voltage between TCM connector and chassis ground.

Connector & terminal

(T10) No. 30 (+) — Chassis ground (−):

Is the voltage approx. 0 V?

3

Repair the short circuit of harness.

3. CHECK PRIMARY DOWN SOLENOID.
1.

Connect the connector for control valve body.

2.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 30 — Transmission body:

Is the resistance approximately 10 — 14.2 Ω? (When cold)

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

4

4. CHECK HARNESS INSIDE TRANSMISSION.

Check for the harness pinch, damage.

Is the check result OK?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission harness.

General description
OUTLINE OF DIAGNOSIS

- Detect short circuit to power supply or open circuit of the shift-down fluid pressure control solenoid drive circuit.

- Judge as NG when an abnormal signal is received from the solenoid driver IC of the shift-down fluid pressure control solenoid drive circuit.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more
Commanded duty of shift down pressure control solenoid | 0%

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Signal of malfunction from solenoid driver IC∗ | ON
As defined by: |
Measured shift down pressure control solenoid voltage 2.5 V or more |

∗IC: Integrated circuit

Time needed for diagnosis: 0.2 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P1603 ENGINE STALL HISTORY

Refer to “ENGINE (DIAGNOSTICS)” for diagnostic procedure. ENGINE (DIAGNOSTICS)(H4DO)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P1603 ENGINE STALL HISTORY

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

Judge as NG when the engine stops except by operating the ignition switch after starting the engine.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
Engine condition | After engine starting

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Engine speed | Less than 300 rpm

Time needed for diagnosis: Immediately

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P162B WARNING INDICATOR REQUEST

Refer to “DTC P162A STARTER INTERLOCK INTERNAL CIRCUIT” under “ENGINE (DIAGNOSTICS)” for diagnostic procedure. ENGINE (DIAGNOSTICS)(H4DO)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P162A STARTER INTERLOCK INTERNAL CIRCUIT

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

Judge as NG when an abnormal signal is received from the engine.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
None |

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Request for malfunction indicator light illumination from engine | ON

Time needed for diagnosis: 1 s

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P170A L-RANGE SWITCH

Refer to “DTC P0951 AUTO SHIFT MANUAL CONTROL CIRCUIT RANGE/PERFORMANCE” for diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0951 AUTO SHIFT MANUAL CONTROL CIRCUIT RANGE/PERFORMANCE

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect the GND-output short (ground-fault) in manual SW circuit.

- Judge as NG if the manual SW is ON in P, R or N range.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
D range SW | OFF

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
L range SW | ON

Time needed for diagnosis: 5 s

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P2530 IGNITION SWITCH RUN POSITION CIRCUIT
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Faulty TCM operation

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK CONNECTOR.
no

Perform the instructed procedures.

yes
2. CHECK INPUT VOLTAGE OF TCM.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK CONNECTOR.

Check the installing condition of TCM connector.

Is the TCM connector installed properly?

2

Install the TCM connector.

2. CHECK INPUT VOLTAGE OF TCM.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Turn the ignition switch to ON.

4.

Measure the voltage between TCM connector and chassis ground. (While wiggling the harness)

Connector & terminal

(T10) No. 41 (+) — Chassis ground (−):

Is the voltage 8 V or more?

- Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

- In this case, the following items may be the cause of fault.

  - Open circuit or short circuit to ground of harness between TCM connector and ignition switch connector (IG relay 1 connector for model with push button start)

  - Poor contact of ignition switch connector (IG relay 1 connector for model with push button start)

  - Poor contact of ignition switch (IG relay 1 for model with push button start)

- Repair the harness and connector.

- In this case, repair the following item:

  - Open circuit or short circuit to ground of harness between TCM connector and ignition switch connector (IG relay 1 connector for model with push button start)

  - Poor contact of ignition switch connector (IG relay 1 connector for model with push button start)

  - Poor contact of ignition switch (IG relay 1 for model with push button start)

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of ignition SW circuit.

- Judge as NG if the ignition SW signals are lost 5 times or more even though the engine is ON.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10.9 V or more
Engine speed | 400 rpm or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Count of temporarily discontinuous input of ignition switch | 5 counts or more

Time needed for diagnosis: 5 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P2746 INTERMEDIATE SHAFT SPEED SENSOR "B" CIRCUIT RANGE/PERFORMANCE
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Standing start problems

- Shock occurs when engaging the lockup clutch.

- Shock occurs when selecting shift position.

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Besides DTC P2746, is DTC P2747 or P2751 displayed?

Perform the diagnosis according to DTCs other than P2746. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

Perform the diagnosis according to DTC P2747. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P2747 INTERMEDIATE SHAFT SPEED SENSOR "B" CIRCUIT NO SIGNAL

General description
OUTLINE OF DIAGNOSIS

Diagnosis 1

- Detect the malfunction of primary speed sensor signal characteristics.

- Judge as NG if the primary speed, compared with the speeds of other parts, is outside the possible range considering the hardware capabilities.

Diagnosis 2

- Detect the malfunction of primary speed sensor signal characteristics.

- Judge as NG if the primary speed exceeds the predetermined value.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage Transmission range (Measured turbine shaft speed / Measured secondary pulley shaft speed) | 9 V or more Drive or Reverse 0.38 or more and 2.68 or less

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Diagnosis 1 (Measured primary pulley shaft speed / Measured secondary pulley shaft speed) | Less than 0.34 or More than 2.95
Diagnosis 2 Measured primary pulley shaft speed | Exceeds 7140 rpm

Time needed for diagnosis: 5 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P2747 INTERMEDIATE SHAFT SPEED SENSOR "B" CIRCUIT NO SIGNAL
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Standing start problems

- Shock occurs when engaging the lockup clutch.

- Shock occurs when selecting shift position.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM•ECM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK FUSE.
no

Perform the instructed procedures.

yes
2. CHECK ECM CONNECTOR.
no

Perform the instructed procedures.

yes
3. CHECK HARNESS BETWEEN TRANSMISSION CONNECTOR AND MAIN RELAY CONNECTOR.
yes

Perform the instructed procedures.

no

4

4. CHECK HARNESS BETWEEN ECM AND MAIN RELAY CONNECTOR.
no

Perform the instructed procedures.

yes
5. CHECK HARNESS.
no

Perform the instructed procedures.

yes
6. CHECK HARNESS.
no

Perform the instructed procedures.

yes
7. CHECK TRANSMISSION HARNESS.
no

Perform the instructed procedures.

yes
8. CHECK INPUT SIGNAL FOR TCM.
yes

Perform the instructed procedures.

no

9

9. CHECK TRANSMISSION HARNESS.
no

Perform the instructed procedures.

yes
10. CHECK PRIMARY SPEED SENSOR.
no

Perform the instructed procedures.

yes
11. CHECK MAIN RELAY.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK FUSE.
1.

Turn the ignition switch to OFF.

2.

Check the M/B fuse No. 21.

Is the check result OK?

2

Replace the fuse. If the fuse blows out easily, repair the short circuit of harness.

2. CHECK ECM CONNECTOR.

Check the connecting condition of ECM connector.

Is the ECM connector correctly connected?

3

Connect the ECM connector correctly.

3. CHECK HARNESS BETWEEN TRANSMISSION CONNECTOR AND MAIN RELAY CONNECTOR.
1.

Turn the ignition switch to OFF.

2.

Measure the voltage between transmission connector and chassis ground.

Connector & terminal

(T15) No. 19 (+) — Chassis ground (−):

Is the voltage 10 V or more?

- Repair the harness and connector.

- In this case, repair the following item:

  - Short circuit to power supply of harness between transmission connector and main relay connector

  - Defective main relay

4

4. CHECK HARNESS BETWEEN ECM AND MAIN RELAY CONNECTOR.
1.

Turn the ignition switch to OFF.

2.

Remove the main relay.

3.

Disconnect the ECM connector.

4.

Measure the resistance between the ECM connector and engine ground.

Connector & terminal

(B134) No. 12 — Engine ground:

Is the resistance 1 MΩ or more?

5

Repair the short circuit to ground in harness between ECM connector and main relay connector.

5. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Disconnect the primary speed sensor connector.

4.

Measure the resistance between TCM connector and the primary speed sensor connector.

Connector & terminal

(T10) No. 14 — (AT1) No. 2:

(T10) No. 42 — (AT1) No. 1:

Is the resistance less than 1 Ω?

6

Repair the open circuit of harness.

6. CHECK HARNESS.

Measure the resistance between TCM connector and chassis ground.

Connector & terminal

(T10) No. 14 — Chassis ground:

Is the resistance 1 MΩ or more?

7

Repair the short circuit of harness.

7. CHECK TRANSMISSION HARNESS.
1.

Install the fuse.

2.

Connect the TCM connector.

3.

Disconnect the transmission connector. (E115, T15)

4.

Turn the ignition switch to ON.

5.

Measure the voltage between transmission connector terminals.

Connector & terminal

(E115) No. 19 (+) — Chassis ground (−):

Is the voltage 10 — 13 V?

8

Repair the open circuit of harness or poor contact of connector.

8. CHECK INPUT SIGNAL FOR TCM.
1.

Turn the ignition switch to OFF.

2.

Connect all connectors.

3.

Lift up the vehicle.

4.

Start the engine.

5.

Set the select lever to “D” range.

6.

Read the data of [Primary Rev Speed] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Does the value of [Primary Rev Speed] change according to the [Turbine Revolution Speed]?

Current condition is normal. Repair the poor contacts of harnesses of primary speed sensor and transmission connector.

9

9. CHECK TRANSMISSION HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the transmission connector.

3.

Disconnect the primary speed sensor connector.

4.

Measure the resistance between transmission connector and primary speed sensor connector.

Connector & terminal

(T15) No. 19 — (AT1) No. 3:

Is the resistance less than 1 Ω?

10

Replace the transmission harness.

10. CHECK PRIMARY SPEED SENSOR.
1.

Turn the ignition switch to OFF.

2.

Replace the primary speed sensor. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Primary Speed Sensor

3.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

4.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC P2747 displayed?

11

The original primary speed sensor is defective.

11. CHECK MAIN RELAY.
1.

Turn the ignition switch to OFF.

2.

Replace the main relay.

3.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

4.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC P2747 displayed?

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

The original main relay is defective.

General description
OUTLINE OF DIAGNOSIS

- Detect no input signal from the primary speed sensor.

- Judge as NG if there is no input signal from the primary pulley speed sensor, while the secondary pulley speed sensor has the input signal although the primary and secondary pulleys are interlocked via the chain.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more
Measured secondary pulley shaft speed | 500 rpm or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Measured primary pulley shaft speed | 0 rpm

Time needed for diagnosis: 0.5 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P2750 INTERMEDIATE SHAFT SPEED SENSOR "C" CIRCUIT RANGE/PERFORMANCE
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Shifting shock is felt.

- Acceleration is poor during standing start.

- Shift control malfunction

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Besides DTC P2750, is any of the DTC P2751, U0122 or U0416 displayed?

Perform the diagnosis according to DTCs other than P2750. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

Perform the diagnosis according to DTC P2751. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P2751 INTERMEDIATE SHAFT SPEED SENSOR "C" CIRCUIT NO SIGNAL

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of the secondary speed sensor characteristics.

- Judge as NG if the deviation of vehicle speed between VDC and the secondary speed sensor becomes the predetermined value or more.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Vehicle speed (calculated from wheel speed sensor) | 5 MPH or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
ABS∗ (Vehicle speed (calculated from measured secondary pulley shaft speed sensor) − Vehicle speed (calculated from wheel speed sensor)) | Exceeds 10 MPH

∗ ABS: Absolute value

Time needed for diagnosis: 5 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P2751 INTERMEDIATE SHAFT SPEED SENSOR "C" CIRCUIT NO SIGNAL
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Shifting shock is felt.

- Acceleration is poor during standing start.

- Shift control malfunction

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM•ECM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK FUSE.
no

Perform the instructed procedures.

yes
2. CHECK ECM CONNECTOR.
no

Perform the instructed procedures.

yes
3. CHECK HARNESS BETWEEN TRANSMISSION CONNECTOR AND MAIN RELAY CONNECTOR.
yes

Perform the instructed procedures.

no

4

4. CHECK HARNESS BETWEEN ECM AND MAIN RELAY CONNECTOR.
no

Perform the instructed procedures.

yes
5. CHECK HARNESS.
no

Perform the instructed procedures.

yes
6. HARNESS AND INSPECTION.
no

Perform the instructed procedures.

yes
7. CHECK TRANSMISSION HARNESS.
no

Perform the instructed procedures.

yes
8. CHECK INPUT SIGNAL FOR TCM.
yes

Perform the instructed procedures.

no

9

9. CHECK TRANSMISSION HARNESS.
no

Perform the instructed procedures.

yes
10. CHECK SECONDARY SPEED SENSOR.
no

Perform the instructed procedures.

yes
11. CHECK MAIN RELAY.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK FUSE.
1.

Turn the ignition switch to OFF.

2.

Check the M/B fuse No. 21.

Is the check result OK?

2

Replace the fuse. If the fuse blows out easily, repair the short circuit of harness.

2. CHECK ECM CONNECTOR.

Check the connecting condition of ECM connector.

Is the ECM connector correctly connected?

3

Connect the ECM connector correctly.

3. CHECK HARNESS BETWEEN TRANSMISSION CONNECTOR AND MAIN RELAY CONNECTOR.
1.

Turn the ignition switch to OFF.

2.

Measure the voltage between transmission connector and chassis ground.

Connector & terminal

(T15) No. 19 (+) — Chassis ground (−):

Is the voltage 10 V or more?

- Repair the harness and connector.

- In this case, repair the following item:

  - Short circuit to power supply of harness between transmission connector and main relay connector

  - Defective main relay

4

4. CHECK HARNESS BETWEEN ECM AND MAIN RELAY CONNECTOR.
1.

Turn the ignition switch to OFF.

2.

Remove the main relay.

3.

Disconnect the ECM connector.

4.

Measure the resistance between the ECM connector and engine ground.

Connector & terminal

(B134) No. 12 — Engine ground:

Is the resistance 1 MΩ or more?

5

Repair the short circuit to ground in harness between ECM connector and main relay connector.

5. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Disconnect the secondary speed sensor connector.

4.

Measure the resistance between TCM connector and the secondary speed sensor connector.

Connector & terminal

(T10) No. 13 — (AT4) No. 2:

(T10) No. 26 — (AT4) No. 1:

Is the resistance less than 1 Ω?

6

Repair the open circuit of harness.

6. HARNESS AND INSPECTION.

Measure the resistance between TCM connector and chassis ground.

Connector & terminal

(T10) No. 13 — Chassis ground:

Is the resistance 1 MΩ or more?

7

Repair the short circuit of harness.

7. CHECK TRANSMISSION HARNESS.
1.

Install the fuse.

2.

Connect the TCM connector.

3.

Disconnect the transmission connector. (E115, T15)

4.

Turn the ignition switch to ON.

5.

Measure the voltage between transmission connector terminals.

Connector & terminal

(E115) No. 19 (+) — Chassis ground (−):

Is the voltage 10 — 13 V?

8

Repair the open circuit of harness or poor contact of connector.

8. CHECK INPUT SIGNAL FOR TCM.
1.

Turn the ignition switch to OFF.

2.

Connect all connectors.

3.

Lift up the vehicle.

4.

Start the engine.

5.

Set the select lever to “D” range.

6.

Read the data of [Secondary Rev Speed] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Does the value of [Secondary Rev Speed] change according to the [Front Wheel Speed]?

Current condition is normal. Repair the poor contacts of harnesses of secondary speed sensor and transmission connector.

9

9. CHECK TRANSMISSION HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the transmission connector.

3.

Disconnect the secondary speed sensor connector.

4.

Measure the resistance between transmission connector and secondary speed sensor connector.

Connector & terminal

(T15) No. 19 — (AT4) No. 3:

Is the resistance less than 1 Ω?

10

Replace the transmission harness.

10. CHECK SECONDARY SPEED SENSOR.
1.

Turn the ignition switch to OFF.

2.

Replace the secondary speed sensor. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Secondary Speed Sensor

3.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

4.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC P2751 displayed?

11

The original secondary speed sensor is defective.

11. CHECK MAIN RELAY.
1.

Turn the ignition switch to OFF.

2.

Replace the main relay.

3.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

4.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC P2751 displayed?

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

The original main relay is defective.

General description
OUTLINE OF DIAGNOSIS

- Detect the no input signal from the secondary speed sensor.

- Judge as NG if there is no input signal from the secondary pulley speed sensor, while the primary pulley speed sensor has the input signal although the primary and secondary pulleys are interlocked via the chain.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more
Transmission range | Drive or Reverse
Measured primary pulley shaft speed | 1000 rpm or more

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Measured secondary pulley shaft speed | 0 rpm

Time needed for diagnosis: 0.5 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P2757 TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT PERFORMANCE/STUCK OFF
1. —

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

No lock-up occurs.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

2

2. CHECK LOCK-UP DUTY SOLENOID (ACTIVE TEST).
yes

6

no

3

3. CHECK LOCK-UP DUTY SOLENOID.
yes

Perform the instructed procedures.

no

4

4. CHECK HARNESS.
no

Perform the instructed procedures.

yes
5. CHECK HARNESS.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

6. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
7. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
8. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
9. DRIVING CHECK FOR LOCK-UP CONDITION.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is a DTC other than DTC P2757 displayed?

Perform the diagnosis according to DTCs other than P2757. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2

2. CHECK LOCK-UP DUTY SOLENOID (ACTIVE TEST).
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, perform the active test of the lock-up duty solenoid. TRANSMISSION (DIAGNOSTICS)>Active Test

Does the indication of 0 → 50% appear repeatedly during the active test, and does operating sound emit during indicating 50%?

6

3

3. CHECK LOCK-UP DUTY SOLENOID.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 15 — Transmission body:

Is the resistance approximately 10 — 14.2 Ω? (When cold)

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

4

4. CHECK HARNESS.

Start work after ATF cools down.

1.

Remove the transmission valve cover.

2.

Disconnect the control valve body connector.

3.

Measure the resistance between TCM connector and control valve body connector.

Connector & terminal

(T10) No. 15 — (T11) No. 9:

Is the resistance less than 1 Ω?

5

Repair the open circuit of harness.

5. CHECK HARNESS.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 15 — Control valve body:

Is the resistance 1 MΩ or more?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Repair the short circuit of harness.

6. CHECK TRANSMISSION FLUID.
1.

Connect all connectors.

2.

Check the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

Is the check result OK?

7

Adjust the amount of ATF.

7. CHECK TRANSMISSION FLUID.

Check the condition of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

Is the check result OK?

Return ATF. 8

Check according to the “Corrective action” of ATF (CVTF) “CONDITION CHECK”. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

8. CHECK INPUT SIGNAL FOR TCM.
1.

Lift up the vehicle.

2.

Start the engine.

3.

Warm up until the ATF temperature reaches to 40 — 70°C (104 — 158°F).

4.

Depress the brake pedal, and shift the select lever to “D” range.

5.

Shift the select lever to “P” range.

6.

Stabilize the engine speed at idle.

7.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 0.5 — 1.5 MPa?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

9

Perform the diagnosis according to DTC P0841. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0841 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT RANGE/PERFORMANCE

9. DRIVING CHECK FOR LOCK-UP CONDITION.
1.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

2.

Turn the ignition switch to OFF.

3.

Start the engine.

4.

Warm up until the ATF temperature exceeds 50°C.

5.

Display the data of [Lock Up Duty Ratio] and [Front Wheel Speed] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

6.

Drive the vehicle for one minute or more while keeping such constant speed that [Lock Up Duty Ratio] is 70% or more, and [Front Wheel Speed] is 40 km/h (25 MPH) or more.

7.

Turn the ignition switch to OFF.

8.

Start the engine.

9.

Perform the procedure in step 6) again.

10.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Does the AT OIL TEMP light blink and is DTC P2757 displayed?

Replace the torque converter assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Torque Converter

Current condition is normal. It is possible that temporary poor contact occurs.

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of lock-up fluid pressure control solenoid, and hydraulic circuit, or drive circuit characteristics (stuck to low pressure side).

- Judge as NG if the deviation between engine speed and turbine speed becomes equal to or larger than the predetermined value, even though the lock-up command is issued.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Engine speed | 1000 rpm or more
Transmission range | Drive
Commanded duty of torque converter clutch pressure control solenoid | 95% or more
Measured turbine shaft speed | Exceeds rpm values in Table 1

Table 1

Engine speed (rpm) | 3700 | 3727 | 3755 | 3782 | 3856 | 4019 | 4213 | 4456
Measured turbine shaft speed (rpm) | 0 | 500 | 1000 | 1500 | 2000 | 2500 | 3000 | 3500

Engine speed (rpm) | 4786 | 5213 | 5651 | 6101 | 6569 | 7044 | 7520
Measured turbine shaft speed (rpm) | 4000 | 4500 | 5000 | 5500 | 6000 | 6500 | 7000

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
ABS∗ (Engine speed − Measured turbine shaft speed) | Exceeds rpm values in Table 2

∗ ABS: Absolute value

Table 2

Engine speed (rpm) | 0 | 500 | 1000 | 1500 | 2000 | 2500 | 3000 | 3500
ABS (Engine speed − Measured turbine shaft speed) (rpm) | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200

Engine speed (rpm) | 4000 | 4500 | 5000 | 5500 | 6000 | 6500 | 7000
ABS (Engine speed − Measured turbine shaft speed) (rpm) | 200 | 200 | 200 | 200 | 200 | 200 | 200

Time needed for diagnosis: 10 s

Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P2758 TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT STUCK ON
1. —

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

The engine stalls when the vehicle is stopped.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK DTC.
yes

Perform the instructed procedures.

no

2

2. CHECK LOCK-UP DUTY SOLENOID (ACTIVE TEST).
yes

6

no

3

3. CHECK LOCK-UP DUTY SOLENOID.
yes

Perform the instructed procedures.

no

4

4. CHECK HARNESS.
no

Perform the instructed procedures.

yes
5. CHECK HARNESS.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

6. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
7. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
8. CHECK INPUT SIGNAL FOR TCM.
no

Perform the instructed procedures.

yes
9. DRIVING CHECK FOR LOCK-UP CONDITION.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is a DTC other than DTC P2758 displayed?

Perform the diagnosis according to DTCs other than P2758. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2

2. CHECK LOCK-UP DUTY SOLENOID (ACTIVE TEST).
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, perform the active test of the lock-up duty solenoid. TRANSMISSION (DIAGNOSTICS)>Active Test

Does the indication of 0 → 50% appear repeatedly during the active test, and does operating sound emit during indicating 50%?

6

3

3. CHECK LOCK-UP DUTY SOLENOID.
1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 15 — Transmission body:

Is the resistance approximately 10 — 14.2 Ω? (When cold)

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

4

4. CHECK HARNESS.

Start work after ATF cools down.

1.

Remove the transmission valve cover.

2.

Disconnect the control valve body connector.

3.

Measure the resistance between TCM connector and control valve body connector.

Connector & terminal

(T10) No. 15 — (T11) No. 9:

Is the resistance less than 1 Ω?

5

Repair the open circuit of harness.

5. CHECK HARNESS.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 15 — Control valve body:

Is the resistance 1 MΩ or more?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Repair the short circuit of harness.

6. CHECK TRANSMISSION FLUID.
1.

Connect all connectors.

2.

Check the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

Is the check result OK?

7

Adjust the amount of ATF.

7. CHECK TRANSMISSION FLUID.

Check the condition of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

Is the check result OK?

Return ATF. 8

Check according to the “Corrective action” of ATF (CVTF) “CONDITION CHECK”. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

8. CHECK INPUT SIGNAL FOR TCM.
1.

Lift up the vehicle.

2.

Start the engine.

3.

Warm up until the ATF temperature reaches to 40 — 70°C (104 — 158°F).

4.

Depress the brake pedal, and shift the select lever to “D” range.

5.

Shift the select lever to “P” range.

6.

Stabilize the engine speed at idle.

7.

Read the data of [Actual Secondary Pressure] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is [Actual Secondary Pressure] 0.5 — 1.5 MPa?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body 9

Perform the diagnosis according to DTC P0841. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0841 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT RANGE/PERFORMANCE

9. DRIVING CHECK FOR LOCK-UP CONDITION.
1.

Using the Subaru Select Monitor, perform the clear memory. COMMON(diag)>Clear memory

2.

Turn the ignition switch to OFF.

3.

Start the engine.

4.

Warm up until the ATF temperature exceeds 50°C.

5.

Display the data of [Lock Up Duty Ratio] and [Front Wheel Speed] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

6.

Drive the vehicle for one minute or more while keeping such constant speed that [Lock Up Duty Ratio] is 0%, and [Front Wheel Speed] is 5 km/h (3 MPH) or less.

7.

Turn the ignition switch to OFF.

8.

Start the engine.

9.

Perform the procedure in step 6) again.

10.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Does the AT OIL TEMP light blink and is DTC P2758 displayed? Or does the engine stall?

Replace the torque converter assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Torque Converter

Current condition is normal. It is possible that temporary poor contact occurs.

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of lock-up fluid pressure control solenoid and hydraulic circuit, or drive circuit characteristics (stuck to high pressure side).

- Judge as NG if the deviation between engine speed and turbine speed becomes equal to or smaller than the predetermined value, even though the lock-up release command is issued.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Engine speed | 1000 rpm or more
Transmission range | Drive
Engine torque | Exceeds N·m values in Table 1
Commanded duty of torque converter clutch pressure control solenoid | 0% or less

Table 1 (2.0 L MODEL)

| Engine coolant temperature (degC)
− 40 | − 20 | 0 | 20 | 40 | 60 | 80 | 100
Vehicle speed (calculated from measured secondary pulley shaft speed sensor) (MPH) | 0 | 150 | 150 | 150 | 150 | 150 | 150 | 134 | 134
13 | 150 | 150 | 150 | 150 | 150 | 150 | 142 | 142
25 | 150 | 150 | 150 | 150 | 150 | 150 | 150 | 150
38 | 150 | 150 | 150 | 150 | 150 | 150 | 150 | 150
50 | 150 | 150 | 150 | 150 | 150 | 150 | 150 | 150

Table 1 (2.5 L MODEL)

| Engine coolant temperature (degC)
− 40 | − 20 | 0 | 20 | 40 | 60 | 80 | 100
Vehicle speed (calculated from measured secondary pulley shaft speed sensor) (MPH) | 0 | 170 | 170 | 170 | 170 | 170 | 170 | 113 | 113
13 | 170 | 170 | 170 | 170 | 170 | 170 | 142 | 142
25 | 170 | 170 | 170 | 170 | 170 | 170 | 150 | 150
38 | 170 | 170 | 170 | 170 | 170 | 170 | 168 | 168
50 | 170 | 170 | 170 | 170 | 170 | 170 | 170 | 170

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
ABS∗ (Engine speed − Measured turbine shaft speed) | Less than rpm values in Table 2

∗ ABS: Absolute value

Table 2

Engine speed (rpm) | 0 | 500 | 1000 | 1500 | 2000 | 2500 | 3000 | 3500
ABS (Engine speed − Measured turbine shaft speed) (rpm) | 0 | 0 | 50 | 50 | 50 | 50 | 50 | 50

Engine speed (rpm) | 4000 | 4500 | 5000 | 5500 | 6000 | 6500 | 7000
ABS (Engine speed − Measured turbine shaft speed) (rpm) | 50 | 50 | 50 | 50 | 50 | 50 | 50

Time needed for diagnosis: 10 s

Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P2763 TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT HIGH
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- No lock-up occurs.

- Engine stalls.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK HARNESS.
no

Perform the instructed procedures.

yes
2. CHECK HARNESS.
no

Perform the instructed procedures.

yes
3. CHECK LOCK-UP DUTY SOLENOID.
yes

Perform the instructed procedures.

no

4

4. CHECK HARNESS INSIDE TRANSMISSION.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK HARNESS.

Start work after ATF cools down.

1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Remove the transmission valve cover.

4.

Disconnect the control valve body connector.

5.

Measure the resistance between TCM connector and control valve body connector.

Connector & terminal

(T10) No. 15 — (T11) No. 9:

Is the resistance less than 1 Ω?

2

Repair the open circuit of harness.

2. CHECK HARNESS.
1.

Turn the ignition switch to ON.

2.

Measure the voltage between TCM connector and chassis ground.

Connector & terminal

(T10) No. 15 (+) — Chassis ground (−):

Is the voltage approx. 0 V?

3

Repair the short circuit of harness.

3. CHECK LOCK-UP DUTY SOLENOID.
1.

Connect the connector for control valve body.

2.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 15 — Transmission body:

Is the resistance approximately 10 — 14.2 Ω? (When cold)

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

4

4. CHECK HARNESS INSIDE TRANSMISSION.

Check for the harness pinch, damage.

Is the check result OK?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission harness.

General description
OUTLINE OF DIAGNOSIS

- Detect short circuit to power supply or open circuit of the lock-up clutch pressure control solenoid drive circuit.

- Judge as NG when an abnormal signal is received from the solenoid driver IC of the lock-up clutch pressure control solenoid drive circuit.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more
Commanded duty of torque converter clutch pressure control solenoid | 0%

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Signal of malfunction from solenoid driver IC∗ | ON
As defined by: |
Measured torque converter clutch pressure control solenoid voltage, 2.5 V or more |

∗IC: Integrated circuit

Time needed for diagnosis: 0.2 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P2764 TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT LOW
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

No lock-up occurs.

Wiring diagram:

CVT control system WIRING SYSTEM>CVT Control System

- Use CHECK BOARD when measuring the TCM terminal voltage and resistance.

- After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK HARNESS.
no

Perform the instructed procedures.

yes
2. CHECK LOCK-UP DUTY SOLENOID.
yes

Perform the instructed procedures.

no

3

3. CHECK HARNESS INSIDE TRANSMISSION.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK HARNESS.

Start work after ATF cools down.

1.

Turn the ignition switch to OFF.

2.

Disconnect the TCM connector.

3.

Remove the transmission valve cover.

4.

Disconnect the control valve body connector.

5.

Measure the resistance between TCM connector and chassis ground.

Connector & terminal

(T10) No. 15 — Chassis ground:

Is the resistance 1 MΩ or more?

2

Repair the short circuit of harness.

2. CHECK LOCK-UP DUTY SOLENOID.
1.

Connect the connector for control valve body.

2.

Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 15 — Transmission body:

Is the resistance approximately 10 — 14.2 Ω? (When cold)

Check for poor contact of connector, and if no fault is found, replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

3

3. CHECK HARNESS INSIDE TRANSMISSION.

Check for the harness pinch, damage.

Is the check result OK?

Replace the control valve body. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Control Valve Body

Replace the transmission harness.

General description
OUTLINE OF DIAGNOSIS

- Detect the ground short of the lock-up clutch pressure control solenoid drive circuit.

- Judge as NG when an abnormal signal is received from the solenoid driver IC of the lock-up clutch pressure control solenoid drive circuit.

EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 9 V or more
Commanded duty of torque converter clutch pressure control solenoid | 100%

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Signal of malfunction from solenoid driver IC∗ | ON
As defined by: |
Measured torque converter clutch pressure control solenoid voltage, 0.8 V or less |

∗IC: Integrated circuit

Time needed for diagnosis: 0.2 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P2797 ELECTRIC/AUXILIARY TRANSMISSION FLUID PUMP "A" PERFORMANCE/STUCK OFF
1. —

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

- Shocks from clutch engagement occur when Auto Start Stop is restarted.

- Auto Start Stop does not operate.

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
2. CHECK TRANSMISSION FLUID.
no

Perform the instructed procedures.

yes
3. CHECK DTC.
yes

Perform the instructed procedures.

no

4

4. ELECTRIC OIL PUMP HYDRAULIC PRESSURE TEST.
no

Perform the instructed procedures.

yes
5. ROAD TEST.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK TRANSMISSION FLUID.

Check the amount of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

Is the check result OK?

2

Adjust the amount of ATF.

2. CHECK TRANSMISSION FLUID.

Check the condition of ATF. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

Is the check result OK?

Return ATF. 3

Check according to the “Corrective action” of ATF (CVTF) “CONDITION CHECK”. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>REPLACEMENT

3. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are DTCs other than P2797 displayed?

Perform the diagnosis according to DTC. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

4

4. ELECTRIC OIL PUMP HYDRAULIC PRESSURE TEST.

Perform oil pressure test for the electric oil pump. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Electric Fluid Pump>INSPECTION

Is the oil pressure at the specification or more?

5

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

5. ROAD TEST.

Perform the CVT road test during Auto Start Stop. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Road Test>INSPECTION > Auto Start Stop

Is DTC P2797 displayed, or are there shocks when the engine is started?

Replace the transmission assembly. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Assembly

Current condition is normal. It is possible that temporary poor contact occurs.

General description
OUTLINE OF DIAGNOSIS

- Detect the malfunction of the electric oil pump.

- Judge as NG when clutch slips are detected while the clutch slip rotation speed is monitored at ordinary starting of Auto Start Stop.

- The secondary pressures are stored at ordinary Auto Start Stop and at IG OFF respectively. Judge as NG when the secondary pressure during Auto Start Stop is lower than the value stored at ordinary Auto Start Stop and is near the value at IG OFF.

EXECUTION CONDITION

Secondary parameters | Execution condition
Diagnosis 1 Auto Start Stop control status | At starting
Diagnosis 2 Auto Start Stop control status | During Auto Start Stop

DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
Diagnosis 1 Change amount of (Turbine speed − Primary rotation speed) | Less than − 4000 rpm/s
Diagnosis 2 Secondary oil pressure learning value voltage during Auto Start Stop − Current secondary pressure voltage | 0.044 V or more

Time needed for diagnosis: 3 consecutive times

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0073 CONTROL MODULE COMMUNICATION BUS OFF

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when CAN communication failure has occurred.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN bus condition | Bus off

Time needed for diagnosis: 2 seconds

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0100 LOST COMMUNICATION WITH ECM/PCM "A"

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when CAN communication failure occurs with the ECM.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from ECM | Lost

Time needed for diagnosis: 0.5 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when CAN communication failure occurs with the VDC CM.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from Vehicle Dynamics Control Module | Lost

Time needed for diagnosis: 0.5 s

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0128 LOST COMMUNICATION WITH PARK BRAKE CONTROL MODULE

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when CAN communication failure occurs with the EPB (VDCCM).

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from EPB (VDCCM) | Lost

Time needed for diagnosis: 4 s

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0131 LOST COMMUNICATION WITH POWER STEERING CONTROL MODULE

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when CAN communication failure occurs with the electric power steering CM.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from electric power steering CM | Lost

Time needed for diagnosis: 2 s

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0140 LOST COMMUNICATION WITH BODY CONTROL MODULE

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when CAN communication failure occurs with the body integrated unit.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from BIU | Lost

Time needed for diagnosis: 4 seconds

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when CAN communication failure occurs with the combination meter.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from combination meter | Lost

Time needed for diagnosis: 4 seconds

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0164 LOST COMMUNICATION WITH HVAC CONTROL MODULE

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when CAN communication failure occurs with the A/C control panel.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from A/C control panel | Lost

Time needed for diagnosis: 2.5 s

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0401 INVALID DATA RECEIVED FROM ECM/PCM "A"

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when data received from ECM is not normal.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from ECM | Did not change

Time needed for diagnosis: 2 seconds

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0416 INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when data received from VDC CM is not normal.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from Vehicle Dynamics Control Module | Did not change

Time needed for diagnosis: 2 seconds

Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0417 INVALID DATA RECEIVED FROM PARK BRAKE CONTROL MODULE

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when data received from the EPB (VDCCM) is not normal.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from EPB (VDCCM) | Did not change

Time needed for diagnosis: 5 s

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0420 INVALID DATA RECEIVED FROM POWER STEERING CONTROL MODULE

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when data received from the electric power steering CM is not normal.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from electric power steering CM | Did not change

Time needed for diagnosis: 2.5 s

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0422 INVALID DATA RECEIVED FROM BODY CONTROL MODULE

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when data received from the body integrated unit is not normal.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from BIU | Did not change

Time needed for diagnosis: 5 s

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when data received from the combination meter is not normal.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from combination meter | Did not change

Time needed for diagnosis: 5 s

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0424 INVALID DATA RECEIVED FROM HVAC CONTROL MODULE

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when data received from the A/C control panel is not normal.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from A/C control panel | Did not change

Time needed for diagnosis: 2.5 s

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U1235 LOST COMMUNICATION WITH EyeSight

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when CAN communication failure occurs with the stereo camera.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from stereo camera | Lost

Time needed for diagnosis: 2 seconds

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U1433 INVALID DATA RECEIVED FROM EyeSight

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

- Detect malfunction of CAN communication.

- Judge as NG when data received from the stereo camera is not normal.

2. EXECUTION CONDITION

Secondary parameters | Execution condition
12 V battery system voltage | 10 V or more
Measured turbine shaft speed | More than 0 rpm
or |
Transmission range | Drive or Reverse

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value

Malfunction Criteria | Threshold Value
CAN data from stereo camera | Did not change

Time needed for diagnosis: 2.5 s

Malfunction indicator light illumination: Does not illuminate.

TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure without Diagnostic Trouble Code (DTC)
CHECK SHIFT INDICATOR

Diagnosis:

- CAN communication is abnormal with the combination meter.

- Combination meter malfunction

Trouble symptom:

- Shift indicator does not display or remains displayed.

- Shift indicator display does not change.

1. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC U0155 or U0423 displayed?

Perform the self-diagnosis of combination meter.

2

2. CHECK DTC.

Read the DTC using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are DTCs other than U0155 and U0423 displayed?

Perform the diagnosis according to the DTC. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

3

3. CHECK COMBINATION METER.

Read the DTC of [Combination Meter] using the Subaru Select Monitor. COMBINATION METER (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are any DTCs displayed?

Perform the diagnosis according to the DTC. COMBINATION METER (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

4

4. CHECK TCM.
1.

Operate the + side of the paddle shift switch.

2.

Read the data of [Up Switch] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Does it change between ON and OFF according to the operation?

5

Check for poor contact between TCM and paddle shift UP switch, and repair the defective part.

5. CHECK TCM.
1.

Operate the − side of the paddle shift switch.

2.

Read the data of [Down Switch] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Does it change between ON and OFF according to the operation?

6

Check for poor contact between TCM and paddle shift down switch, and repair the defective part.

6. CHECK TCM.
1.

Turn the ignition switch OFF, then turn it ON again.

2.

Shift the select lever to manual mode.

3.

Read the data of [Shift step in Manu. mode] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is “1” displayed?

7

Perform the diagnosis according to DTC P0951. TRANSMISSION (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0951 AUTO SHIFT MANUAL CONTROL CIRCUIT RANGE/PERFORMANCE

7. CHECK TCM.
1.

Shift up the select lever.

2.

Read the data of [Shift step in Manu. mode] using Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor

Is “2” displayed?

Current condition is normal.

Replace the TCM. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)

TRANSMISSION (DIAGNOSTICS) > Diagnostics with Phenomenon
INSPECTION

Symptoms | Faulty parts
Engine stalls when driving in “D” or “R” range, or selecting “N” → “D”, “N” → “R”. | Control valve Engine control system
While driving in “D” range, vibration occurs immediately before the stop or engine stalls. | Control valve Torque converter
Vehicle cannot shift while driving in “D” range. | Control valve TCM Shift mechanism Power supply system
Excessive shock when selecting “N” → “D”, and “N” → “R”. | Control valve TCM F&R clutch pack ATF deterioration or lack
Excessive shock at standing start in “D” range. | Control valve TCM F&R clutch pack ATF deterioration or lack
Engine speed increases abruptly during driving in “D” or “R” range. | Control valve Secondary pressure sensor F&R clutch pack ATF deterioration or lack
Vehicle can not start when depressing the accelerator pedal in “D” or “R” range, or acceleration is very poor. (Without abrupt engine increase) | Control valve F&R clutch pack Shift mechanism Parking mechanism Engine control system Power supply system
Shift indicator in combination meter displays the position which differs from select lever position. | Inhibitor switch Select cable related Combination meter
Manual mode enters even though the select lever and paddle shift switch is not operated. | Manual mode switch Paddle shift switch Select lever TCM
Engine speed increases abruptly in “D” or “R” range, vehicle can not start. | F&R clutch pack Select cable related
Manual mode can not be set | Select lever TCM

TRANSMISSION (DIAGNOSTICS) > General Scan Tool
OPERATION
1. HOW TO USE GENERAL SCAN TOOL
1.

Prepare a scan tool (general scan tool) required by SAE J1978.

2.

Connect the general scan tool to data link connector located in the lower portion of the instrument panel (on the driver’s side). COMMON(diag)>Data Link Connector

3.

Using the general scan tool, call up each data. General scan tool functions consist of:

(1)

MODE $01: Current powertrain diagnostic data

(2)

MODE $02: Powertrain freeze frame data

(3)

MODE $03: Emission-related powertrain DTC

(4)

MODE $04: Clear/Reset emission-related diagnostic information

(5)

MODE $07: Initial emission-related powertrain DTC

(6)

MODE $09: Request vehicle information

(7)

MODE $0A: Emission-related DTC

4.

Read out the data according to repair procedures. (For detailed operation procedures, refer to the general scan tool operation manual.)

For details concerning DTC, refer to “Diagnostic Trouble Code (DTC)”. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2. MODE $01 (CURRENT POWERTRAIN DIAGNOSTIC DATA)

Refer to data denoting the current operating condition of analog input/output, digital input/output or the powertrain system.

A list of the support data and PID (Parameter Identification) codes are shown in the following table.

PID | Data | Unit of measure
$01 | Number of emission-related powertrain DTC, and malfunction indicator light status and diagnosis support information, readiness code | —
$05 | Engine coolant temperature | Celsius
$0C | Engine speed | rpm
$0D | Vehicle speed | km/h or MPH
$1F | Time elapsed after engine start | sec
$41 | Diagnostic monitor of each driving cycle | —

Refer to general scan tool manufacturer’s operation manual to access the present powertrain diagnostic data (MODE $01).

3. MODE $02 (POWERTRAIN FREEZE FRAME DATA)

Refer to data denoting the operating condition when trouble is detected by on-board diagnosis system.

A list of the support data and PID (Parameter Identification) codes are shown in the following table.

PID | Data | Unit of measure
$02 | DTC that caused freeze frame data to be stored | —
$05 | Engine coolant temperature | Celsius
$0C | Engine speed | rpm
$0D | Vehicle speed | km/h or MPH

Refer to general scan tool manufacturer’s operation manual to access freeze frame data (MODE $02).

4. MODE $03 (EMISSION-RELATED POWERTRAIN DTC)

Refer to “Diagnostic Trouble Code (DTC)” for information about data denoting emission-related powertrain DTC. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

5. MODE $04 (CLEAR/RESET EMISSION-RELATED DIAGNOSTIC INFORMATION)

Refer to the mode used to clear or reset emission-related diagnostic information.

- Refer to the manufacturer’s operation manual for the general scan tool to clear the emission-related diagnostic information (MODE $04).

- Initial diagnosis of electronic throttle control is performed after memory clearance. Wait for 10 seconds or more after turning the ignition switch to ON, and then start the engine.

6. MODE $07 (INITIAL EMISSION-RELATED POWERTRAIN DTC)

Refer to the data of DTC (pending code) for troubleshooting result about emission in the first time.

7. MODE $09 (REQUEST VEHICLE INFORMATION)

Refer to the data of the vehicle specification.

8. MODE $0A (EMISSION-RELATED DTC)

Refer to “Diagnostic Trouble Code (DTC)” for information about data denoting emission-related DTC. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST