AIR CONDITIONER(DIAGNOSTICS)
AC(diag)

AIR CONDITIONER(DIAGNOSTICS) > Basic Diagnostic Procedure
PROCEDURE

When the sunload sensor check is performed indoors or in the shade, it could be diagnosed as sensor having an open circuit. Always perform the inspection in direct sunlight.

1. PERFORM CUSTOMER INTERVIEW.

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

Did you interview the customer?

2

Perform the interview, and 2

2. PERFORM BASIC INSPECTION.

Perform basic inspection. AIR CONDITIONER(DIAGNOSTICS)>General Description>INSPECTION

Is the check result OK?

3

Repair the faulty part found in basic inspection, and 3

3. CHECK SUBARU SELECT MONITOR COMMUNICATION.
1.

Turn the ignition switch to OFF.

2.

Connect the Subaru Select Monitor to data link connector. COMMON(diag)>Data Link Connector

3.

Turn the ignition switch to ON and run the Subaru Select Monitor.

4.

Select [Air Conditioner].

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

Is communication possible?

4

Check the communication circuit. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure for Subaru Select Monitor Communication

4. CHECK DTC.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are any DTCs displayed? (Current malfunction)

Record the DTC, time stamp and freeze frame data, and 5

Perform diagnosis according to the procedures in the diagnostics with phenomenon. AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon

5. PERFORM DIAGNOSIS.
1.

Perform the diagnosis for the displayed DTCs. AIR CONDITIONER(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 [Air Conditioner]. COMMON(diag)>Clear memory

4.

Execute the inspection mode. AIR CONDITIONER(DIAGNOSTICS)>Inspection Mode

5.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are any DTCs displayed? (Current malfunction)

Repeat step 5 until DTC is not shown. 5

Finish the diagnosis.

AIR CONDITIONER(DIAGNOSTICS) > Check List for Interview
CHECK

Inspect the following items regarding the vehicle’s state.

A/C Check List for Interview Brought in on:    Year    Month    Date
Customer’s name | Registration No. | Initial year of registration Year    Month    Date
Vehicle model | Frame number
Interviewer | Inspector | Engine type | Odometer reading
Customer specified content • • •
Date and time when the trouble occurred |  | Frequency of trouble occurrence | Always occurs Sometimes occurs (   times per day,   times per month)
Condition of trouble occurrence (How the trouble occurs) |  | Weather | Fine • Cloudy • Rainy • Snowy • Others (       )
Temperature | °C (°F) —   °C (°F)
Road conditions |
Road surface condition |
Accessory installation condition |
Diagnostic trouble code |
Time stamp |
Control module item number/Ver. |
Condition of trouble occurrence (How the trouble occurs) |
Vehicle bring-in history information |

AIR CONDITIONER(DIAGNOSTICS) > General Description
CAUTION
1. AIR CONDITIONER

- Never connect the battery in reverse polarity.

  A/C control panel may be immediately damaged.

- Do not disconnect the battery cables while the engine is running.

  A large counter electromotive force will be generated in the generator, and this voltage may damage electronic parts such as A/C control panel etc.

- Before disconnecting the connectors of sensors and the A/C control panel, be sure to turn off the ignition switch.

  A/C control panel may be damaged.

- A/C-related parts are precision parts, so do not let them fall.

- When removing A/C related parts, refer to Cautions for A/Cs. AIR CONDITIONER>General Description>CAUTION

2. AIRBAG

When removing airbag related parts, refer to Cautions for Airbags. AIRBAG SYSTEM>General Description>CAUTION

AIR CONDITIONER(DIAGNOSTICS) > General Description
INSPECTION
1. BASIC INSPECTION

Before performing diagnosis, check the following items which might affect the A/C problems.

1.

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

2.

Check the main and other fuses, harnesses and connectors. Also check grounding.

3.

Check the refrigerant pressure. AIR CONDITIONER>Refrigerant Pressure with Manifold Gauge Set

AIR CONDITIONER(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, refer to “Help” of application.

2. GENERAL TOOL

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

AIR CONDITIONER(DIAGNOSTICS) > General Description
SYSTEM BLOCK DIAGRAM

- A/C control & status display

  Using the CAN communication, perform A/C control from vehicle information and each sensor value to actuate the A/C system device. Also display A/C status on MFD by CAN output of A/C status.

- Hazard is ON

  Output hazard switch signals to body integrated unit. The control of hazard illumination is carried out via body integrated unit.

- Illumination

  Adjust the A/C control panel lighting according to input (body integrated unit & combination meter).

- Engine control

  Transmit the A/C status via CAN for engine control.

- Rear defogger operation

  Output switch signals to body integrated unit. The control of rear defogger operation is carried out via body integrated unit.

- Mirror heater operation

  Output switch signals to body integrated unit. The control of mirror heater operation is carried out via body integrated unit.

- Voice recognition

  Change the A/C setting according to voice input in combination with AVN.

AIR CONDITIONER(DIAGNOSTICS) > Electrical Component Location
LOCATION
1. ENGINE COMPARTMENT

(1) | Pressure sensor (PD) | (3) | A/C compressor (Variable flow change solenoid) | (4) | Ambient sensor
(2) | Pressure sensor (PH) |  |  |  |

2. COMPARTMENT

(1) | Mode door actuator | (6) | Intake door actuator | (10) | Air mix door actuator∗1 or air mix door actuator RH∗2
(2) | In-vehicle sensor (integrated with humidity sensor) | (7) | Data link connector | (11) | Power transistor
(3) | Sunload sensor | (8) | Air mix door actuator LH∗2 | (12) | Blower motor
(4) | Heater core sensor | (9) | A/C control panel | (13) | Blower motor relay
(5) | Evaporator sensor

∗1: Without left/right independent air conditioning function

∗2: With left/right independent air conditioning function

AIR CONDITIONER(DIAGNOSTICS) > Control Module I/O Signal
ELECTRICAL SPECIFICATION

Terminal No. | Contents | Measuring condition | Standard
(i88) No. 1 | Mode door actuator #4 | Digital signal; can not be measured | —
(i88) No. 2 | Mode door actuator #3 | Digital signal; can not be measured | —
(i88) No. 3 | Mode door actuator #2 | Digital signal; can not be measured | —
(i88) No. 4 | Mode door actuator #1 | Digital signal; can not be measured | —
(i88) No. 5 | — | — | —
(i88) No. 6 (+) ←→ (i88) No. 8 (−) | Intake door actuator drive signal (FRESH) | FRESH mode | 8 V or more
(i88) No. 7 (+) ←→ Chassis ground (−) | Hazard switch | Hazard switch: ON | Switch OFF: Battery voltage Switch ON: 0 V
(i88) No. 8 (+) ←→ (i88) No. 6 (−) | Intake door actuator (RECIRC) | RECIRC mode | 8 V or more
(i88) No. 9 (+) ←→ Chassis ground (−) | Blower fan ON signal | Blower fan is ON | 1 V or less
(i88) No. 10 (+) ←→ Chassis ground (−) | 5 V power supply | Ignition switch ON | 5 V
(i88) No. 11 | — | — | —
(i88) No. 12 (+) ←→ Chassis ground (−) | Intake door potentiometer signal | Ignition switch ON | 0 — 5 V
(i88) No. 13 | Pressure sensor (PD) |  |
(i88) No. 14 (+) ←→ Chassis ground (−) | GND for sensors | Always | 1 V or less
(i88) No. 15 (+) ←→ Chassis ground (−) | ACC power supply | ACC ON | Battery voltage
(i88) No. 16 (+) ←→ Chassis ground (−) | Sunload sensor | Sunlight is contacting sensor | 1 — 4 V
(i88) No. 17 (+) ←→ Chassis ground (−) | In-vehicle sensor | Ignition switch ON | 25°C: 2.5 V
(i88) No. 18 (+) ←→ Chassis ground (−) | Post evaporator sensor | Depends on temperature after the evaporator. | 1 — 4.5 V
(i88) No. 19 | CAN Lo | Digital signal; can not be measured | —
(i88) No. 20 | CAN Hi | Digital signal; can not be measured | —
(i88) No. 21 | Air mix door actuator LH #4∗2 | Digital signal; can not be measured | —
(i88) No. 22 | Air mix door actuator LH #3∗2 | Digital signal; can not be measured | —
(i88) No. 23 | Air mix door actuator LH #2∗2 | Digital signal; can not be measured | —
(i88) No. 24 | Air mix door actuator LH #1∗2 | Digital signal; can not be measured | —
(i88) No. 25 | Air mix door actuator #4∗1 or air mix door actuator RH #4∗2 | Digital signal; can not be measured | —
(i88) No. 26 | Air mix door actuator #3∗1 or air mix door actuator RH #3∗2 | Digital signal; can not be measured | —
(i88) No. 27 | Air mix door actuator #2∗1 or air mix door actuator RH #2∗2 | Digital signal; can not be measured | —
(i88) No. 28 | Air mix door actuator #1∗1 or air mix door actuator RH #1∗2 | Digital signal; can not be measured | —
(i88) No. 29 | — | — | —
(i88) No. 30 | — | — | —
(i88) No. 31 (+) ←→ Chassis ground (−) | Battery power supply | Always | Battery voltage
(i88) No. 32 (+) ←→ Chassis ground (−) | Ignition power supply | Ignition ON | Battery voltage
(i88) No. 33 | Humidity sensor | Ignition switch ON (Fluctuates depending on temperature of the vehicle interior.) | 1 — 4.5 V
(i88) No. 34 (+) ←→ Chassis ground (−) | GND | Always | 1 V or less
(i88) No. 35 | Illumination power supply (−) | Illumination ON (measured between (i88) No. 37 (+) ←→ (i88) No. 35(−)) | Battery voltage
(i88) No. 36 (+) ←→ Chassis ground (−) | Variable compressor solenoid valve drive signal | Ignition switch ON Blower switch ON A/C switch ON | 2 V — 12 V
(i88) No. 37 (+) ←→ (i88) No. 35 (−) | Illumination power supply (+) | Illumination ON | Battery voltage
(i88) No. 38 | Pressure sensor (PH) |  |
(i88) No. 39 (+) ←→ Chassis ground (−) | Heater core sensor | Ignition switch ON (Fluctuates depending on temperature after the heater core.) | 0.5 — 4.0 V
(i88) No. 40 (+) ←→ Chassis ground (−) | Fan control signal | Ignition switch: ON, Blower switch: ON | 1st gear: Approx. 10.0 V
2nd gear: Approx. 9.0 V
3rd gear: Approx. 8.0 V
4th gear: Approx. 7.0 V
5th gear: Approx. 6.0 V
6th gear: Approx. 4.5 V
7th gear: Approx. 2.0 V

∗1: Without left/right independent air conditioning function

∗2: With left/right independent air conditioning function

AIR CONDITIONER(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. INSPECTION MODE 1

Code | Description & trouble part | Note
B1430 | IN-VEHICLE (POST EVAPORATOR) TEMPERATURE SENSOR CIRCUIT OPEN | —
B1431 | IN-VEHICLE (POST EVAPORATOR) TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT | —
B1432 | AMBIENT TEMPERATURE SENSOR CIRCUIT OPEN (AIR-CONDITIONER) | —
B1433 | AMBIENT TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT (AIR-CONDITIONER) | —
B1434 | EVAPORATOR TEMPERATURE SENSOR CIRCUIT OPEN | —
B1435 | EVAPORATOR TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT | —
B1436 | AIR MIX DOOR ACTUATOR CIRCUIT OPEN (PASSENGER) | —
B1437 | AIR MIX DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT (PASSENGER) | —
B1438 | MODE DOOR ACTUATOR CIRCUIT OPEN | —
B1439 | MODE DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT | —
B1440 | AIR MIX DOOR ACTUATOR CIRCUIT OPEN (DRIVER) | —
B1442 | AIR MIX DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT (DRIVER) | —
B14E7 | HEATER CORE SENSOR CIRCUIT OPEN | —
B14E8 | HEATER CORE SENSOR CIRCUIT SHORT-CIRCUIT | —
B14E9 | INTAKE DOOR ACTUATOR CIRCUIT OPEN | —
B14EA | INTAKE DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT | —
B14EB | INTAKE DOOR ACTUATOR STUCK | —
B14EC | HUMIDITY SENSOR CIRCUIT OPEN | —
B14ED | HUMIDITY SENSOR CIRCUIT SHORT | —

Diagnostic procedure:

1.

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

2.

Using the Subaru Select Monitor, read the DTC of [Air Conditioner] to check that there is no DTC displayed. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis for the displayed DTCs. After solving the DTC, repeat from step 1).

3.

Turn the ignition switch to ON and then leave it for 16 seconds or more.

4.

Using the Subaru Select Monitor, read the DTC of [Air Conditioner] to check that there is no DTC displayed. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis for the displayed DTCs.

2. INSPECTION MODE 2

Code | Description & trouble part | Note
B14A1 | SUNLOAD SENSOR CIRCUIT LOW/OPEN | —
B14A2 | SUNLOAD SENSOR CIRCUIT SHORT-CIRCUIT | —

Diagnostic procedure:

1.

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

2.

Using the Subaru Select Monitor, read the DTC of [Air Conditioner] to check that there is no DTC displayed. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis for the displayed DTCs. After solving the DTC, repeat from step 1).

3.

Park the vehicle in the place subjected to direct sunlight.

4.

Turn the ignition switch to ON and then leave it for 4 seconds or more.

5.

Using the Subaru Select Monitor, read the DTC of [Air Conditioner] to check that there is no DTC displayed. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis for the displayed DTCs.

3. INSPECTION MODE 3

Code | Description & trouble part | Note
B14A3 | REFRIGERANT PRESSURE SENSOR CIRCUIT OPEN | —
B14A4 | REFRIGERANT PRESSURE SENSOR CIRCUIT SHORT-CIRCUIT | —
B14A7 | VARIABLE SOLENOID VALVE CIRCUIT | —
B14A8 | COMPRESSOR BREAK-IN MALFUNCTION LOW REFRIGERANT | —
B14EE | REFRIGERANT PRESSURE SENSOR CIRCUIT OPEN (HOSE PRESSURE DISCHARGE) | —
B14EF | REFRIGERANT PRESSURE SENSOR CIRCUIT SHORT-CIRCUIT (HOSE PRESSURE DISCHARGE) | —

Diagnostic procedure:

1.

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

2.

Using the Subaru Select Monitor, read the DTC of [Air Conditioner] to check that there is no DTC displayed. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis for the displayed DTCs. After solving the DTC, repeat from step 1).

3.

Perform [Variable compressor break-in drive]. AIR CONDITIONER>Compressor>INSTALLATION

4.

Using the Subaru Select Monitor, read the DTC of [Air Conditioner] to check that there is no DTC displayed. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis for the displayed DTCs.

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

Trouble symptom:

Cannot communicate with [Air Conditioner].

Detecting condition:

- Defective harness connector

- Power supply circuit malfunction

- Defective CAN communication circuit

- Defective Subaru Select Monitor

Wiring diagram:

- Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

- CAN communication system WIRING SYSTEM>CAN Communication System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK POWER SUPPLY CIRCUIT.

Connect DST-i to data link connector.

Does DST-i turn ON?

4

2

2. CHECK POWER SUPPLY CIRCUIT.
1.

Turn the ignition switch to ON.

2.

Using the tester, measure the voltage between data link connector and chassis ground.

Connector & terminal

(i288) No. 8 (+) — Chassis ground (−):

(i288) No. 16 (+) — Chassis ground (−):

Is the voltage 10 V or more?

3

- Repair the power supply circuit.

  In this case, repair the following item:

  - Open or ground short circuit of harness between battery and data link connector

  - Blown out of fuse (M/B No. 11, F/B No. 19)

3. CHECK HARNESS BETWEEN DATA LINK CONNECTOR AND CHASSIS GROUND (OPEN).
1.

Turn the ignition switch to OFF.

2.

Using the tester, measure the resistance between data link connector and chassis ground.

Connector & terminal

(i288) No. 4 — Chassis ground:

(i288) No. 5 — Chassis ground:

Is the resistance less than 5 Ω?

Check for poor contact of the data link connector, and repair a fault, if any. When no fault is found, go to 4.

Repair the harness and connector.

4. CHECK SUBARU SELECT MONITOR.
1.

Connect the Subaru Select Monitor to a normal vehicle.

2.

Start the engine and perform communication between the Subaru Select Monitor and vehicle.

Is communication possible?

5

Use another Subaru Select Monitor because the CAN communication circuit of the Subaru Select Monitor is faulty.

5. CHECK LAN SYSTEM.

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

Is the check result OK?

6

Repair it according to the diagnosis for LAN system.

6. CHECK CONNECTOR.

Check poor contact of A/C control panel connector and data link connector.

Is the check result OK?

7

Repair the connector.

7. CHECK FUSE.
1.

Turn the ignition switch to OFF.

2.

Remove a fuse from the fuse box.

3.

Check the fuse.

Is the check result OK?

8

Replace the fuse. If the replaced fuse blows out easily, repair the ground short circuit in harness between the A/C control panel and fuse.

8. CHECK A/C CONTROL PANEL POWER SUPPLY CIRCUIT (OPEN).
1.

Disconnect the A/C control panel connector.

2.

Turn the ignition switch to ON.

3.

Measure the voltage between A/C control panel connector and chassis ground.

Connector & terminal

(i88) No. 31 (+) — Chassis ground (−):

(i88) No. 32 (+) — Chassis ground (−):

Is the voltage 10 V or more?

9

Check for open or short circuit in the harness between A/C control panel and fuse.

9. CHECK A/C CONTROL PANEL GROUND CIRCUIT (OPEN).

Measure the resistance of harness between A/C control panel and chassis ground.

Connector & terminal

(i88) No. 34 — Chassis ground:

Is the resistance less than 5 Ω?

Check the connection between the data link connector and Subaru Select Monitor.

Repair the harness for ground line.

AIR CONDITIONER(DIAGNOSTICS) > Data Monitor
OPERATION

- For detailed operation procedures, refer to “Common (Diagnostics)”. COMMON(diag)>Data Monitor

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

AIR CONDITIONER(DIAGNOSTICS) > Data Monitor
LIST

Item | Contents | Standard/Unit | Note
In-vehicle Sensor Temperature | Display the in-vehicle sensor value. | −72.47 — 193.82°C | —
Refrigerant Pressure | Display the pressure sensor (PH) value. | 0 — 3.29 MPa | —
Quantity of Sunload | Display the sunload sensor value. | 0 — 4448 W/m^2 | —
Heater Water Temperature | Display the engine coolant temperature. (CAN information) | −40.00 — 214 °C | —
Refrigerant Pressure | Display the pressure sensor (PD) value. | 0 — 3.29 MPa | —
Heater Control Panel Setting Value (Driver's) | Display the set temperature of the A/C control panel on driver’s seat side. | 15 — 90 | —
Heater Control Panel Setting Value (Passenger's) | Display the set temperature of the A/C control panel on passenger’s seat side. | 15 — 90 | With left/right independent air conditioning function
Blower outlet request temperature (Driver's) | Display the blow vents target temperature on driver’s side. | −327.68 — 327.67°C | —
Blower outlet request temperature (Passenger's) | Display the inner set value of the A/C control panel. (With left/right independent air conditioning function) | −327.68 — 327.67°C | With left/right independent air conditioning function
Air mix door actuator position (driver's side) | Display the driver’s seat air mix door actuator position information. | −32.68 — 133.33% | —
Air mix door actuator position (passenger's side) | Display the passenger’s seat air mix door actuator position information. | −32.68 — 133.33% | With left/right independent air conditioning function
Mode Door Actuator Position | Display the mode door actuator position information. | −32.68 — 133.33% | —
Fresh/Recircle Air Door Actuator Position | Display the intake door actuator position information. | −32.68 — 133.33% | —
Target air mix door actuator position (driver's side) | Display the driver’s seat air mix door actuator target position information. | −32.68 — 133.33% | —
Target air mix door actuator position (passenger's side) | Display the passenger’s seat air mix door actuator position information. | −32.68 — 133.33% | With left/right independent air conditioning function
Mode Door Actuator Position Target | Display the mode door actuator target position information. | −32.68 — 133.33% | —
Fresh/Recircle Air Door Actuator Position Target | Display the intake door actuator target position information. | −32.68 — 133.33% | —
Blower Fan Level | Display the blower fan motor speed level. | 0 — 255 | —
Ambient Air Temperature | Display the ambient sensor value. (CAN information) | −40 — 80 °C | —
Compressor operation status | Display the operation status of the compressor. | OFF/ON | —
Blower Fan Operating Condition | Display the operation status of the blower fan. | MANU/AUTO | —
A/C Operating Condition | Display the operation status of the compressor. | MANU/AUTO | —
Fresh/Recircle Air Operating Condition | Display the operation status of the FRESH/RECIRC. | MANU/AUTO | —
Mode Operating Condition | Display the operation status of the blow vents. | MANU/AUTO | —
Rear Defogger | Display the operation status of the rear defogger switch. | OFF/ON | —
Engine Speed | Display the engine speed. (CAN information) | 0 — 32767 rpm | —
Vehicle Speed | Display the vehicle speed. (CAN information) | 0 — 300 km/h | —
Evaporator Temperature | Display the evaporator sensor value. | −82.48 — 153.55°C | —
Evaporator Temperature Target | Display the evaporator target temperature. | 0 — 20 °C | —
Variable Flow Change Solenoid Duty | Display Duty value of the variable flow change solenoid valve. | 0 — 100 % | —
Variable Load Compressor Torque Value | Display the estimated load torque value of the variable compressor. | 0 — 100 Nm | —
Climate Control - Mode Setting | Display the selection of A/C basic operation pattern. | NORMAL/MILD/POWERFUL/ECO | High grade MFD specification
Climate Control - Passenger Interlock | Display the change pattern of A/C operation depending on passengers. | OFF/ON | High grade MFD specification
Request Compressor Speed during Idling | Display the request compressor rotational speed at idling. | 650 — 1425 rpm | —
Request engine speed | Display the request engine speed. | 0: Without Request/1: Cooler H/2: Hearter H/3: Cooler L/4: Heater L/5: Heater M/6: Heater LL | —
Heater core Temp. | Display the heater core sensor readings. | −40 — 214 °C | With Auto Start Stop
Humidity | Display humidity sensor readings. | 0 — 100 % | With humidity sensor
Driver monitoring system 1 temperature setting value (driver’s side) | Display the set temperature of the A/C control panel on driver’s side stored in the driver monitoring system 1. | 15 — 90 | With driver monitoring system
Driver monitoring system 1 temperature setting value (passenger’s side) | Display the set temperature of the A/C control panel on passenger’s side stored in the driver monitoring system 1. | 15 — 90 | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System1 Airflow Mode Setting | Display the target temperature of the blower vent stored in the driver monitoring system 1. | 01h: VENT 02h: VENT II 03h: B/L 04h: HEAT 05h: DEF/HEAT 06h: DEF 0Fh: AUTO | With driver monitoring system
Driver Monitoring System1 Blower Fan Setting | Display the blower fan setting stored in the driver monitoring system 1. | 00h: OFF 01h: LO 02h: M1 03h: M2 04h: M3 05h: M4 06h: M5 07h: HI 0Fh: AUTO | With driver monitoring system
Driver Monitoring System1 Fresh/Recircle Setting | Display the intake door setting stored in the driver monitoring system 1. | 01h: Recircle 02h: Fresh 0Fh: AUTO | With driver monitoring system
Driver Monitoring System1 A/C Setting | Display the A/C setting stored in the driver monitoring system 1. | 00h: OFF 02h: ON 0Fh: AUTO | With driver monitoring system
Driver Monitoring System1 AUTO Setting | Display the AUTO setting stored in the driver monitoring system 1. | 00h: MANUAL 01h: AUTO 02h: FULL AUTO | With driver monitoring system
Driver Monitoring System1 SYNC Setting | Display the SYNC setting stored in the driver monitoring system 1. | 01h: OFF 02h: ON | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System1 MAX A/C Setting | Display the MAX A/C setting stored in the driver monitoring system 1. | 01h: OFF 02h: ON | With driver monitoring system
Driver Monitoring System1 Climate Control - Mode Setting | Display the A/C main setting stored in the driver monitoring system 1. | 00h: NORMAL 01h: MILD 02h: POWERFUL 03h: ECO | With driver monitoring system
Driver Monitoring System1 Climate Control - Passenger Interlock | Display the A/C and passenger linking operation setting stored in the driver monitoring system 1. | 01h: OFF 02h: ON | With driver monitoring system
Driver monitoring system 2 temperature setting value (driver’s side) | Display the set temperature of the A/C control panel on driver’s side stored in the driver monitoring system 2. | 15 — 90 | With driver monitoring system
Driver monitoring system 2 temperature setting value (passenger’s side) | Display the set temperature of the A/C control panel on passenger’s side stored in the driver monitoring system 2. | 15 — 90 | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System2 Airflow Mode Setting | Display the target temperature of the blower vent stored in the driver monitoring system 2. | 01h: VENT 02h: VENT II 03h: B/L 04h: HEAT 05h: DEF/HEAT 06h: DEF 0Fh: AUTO | With driver monitoring system
Driver Monitoring System2 Blower Fan Setting | Display the blower fan setting stored in the driver monitoring system 2. | 00h: OFF 01h: LO 02h: M1 03h: M2 04h: M3 05h: M4 06h: M5 07h: HI 0Fh: AUTO | With driver monitoring system
Driver Monitoring System2 Fresh/Recircle Setting | Display the intake door setting stored in the driver monitoring system 2. | 01h: Recircle 02h: Fresh 0Fh: AUTO | With driver monitoring system
Driver Monitoring System2 A/C Setting | Display the A/C setting stored in the driver monitoring system 2. | 00h: OFF 02h: ON 0Fh: AUTO | With driver monitoring system
Driver Monitoring System2 AUTO Setting | Display the AUTO setting stored in the driver monitoring system 2. | 00h: MANUAL 01h: AUTO 02h: FULL AUTO | With driver monitoring system
Driver Monitoring System2 SYNC Setting | Display the SYNC setting stored in the driver monitoring system 2. | 01h: OFF 02h: ON | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System2 MAX A/C Setting | Display the MAX A/C setting stored in the driver monitoring system 2. | 01h: OFF 02h: ON | With driver monitoring system
Driver Monitoring System2 Climate Control - Mode Setting | Display the A/C main setting stored in the driver monitoring system 2. | 00h: NORMAL 01h: MILD 02h: POWERFUL 03h: ECO | With driver monitoring system
Driver Monitoring System2 Climate Control - Passenger Interlock | Display the A/C and passenger linking operation setting stored in the driver monitoring system 2. | 01h: OFF 02h: ON | With driver monitoring system
Driver monitoring system 3 temperature setting value (driver’s side) | Display the set temperature of the A/C control panel on driver’s side stored in the driver monitoring system 3. | 15 — 90 | With driver monitoring system
Driver monitoring system 3 temperature setting value (passenger’s side) | Display the set temperature of the A/C control panel on passenger’s side stored in the driver monitoring system 3. | 15 — 90 | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System3 Airflow Mode Setting | Display the target temperature of the blower vent stored in the driver monitoring system 3. | 01h: VENT 02h: VENT II 03h: B/L 04h: HEAT 05h: DEF/HEAT 06h: DEF 0Fh: AUTO | With driver monitoring system
Driver Monitoring System3 Blower Fan Setting | Display the blower fan setting stored in the driver monitoring system 3. | 00h: OFF 01h: LO 02h: M1 03h: M2 04h: M3 05h: M4 06h: M5 07h: HI 0Fh: AUTO | With driver monitoring system
Driver Monitoring System3 Fresh/Recircle Setting | Display the intake door setting stored in the driver monitoring system 3. | 01h: Recircle 02h: Fresh 0Fh: AUTO | With driver monitoring system
Driver Monitoring System3 A/C Setting | Display the A/C setting stored in the driver monitoring system 3. | 00h: OFF 02h: ON 0Fh: AUTO | With driver monitoring system
Driver Monitoring System3 AUTO Setting | Display the AUTO setting stored in the driver monitoring system 3. | 00h: MANUAL 01h: AUTO 02h: FULL AUTO | With driver monitoring system
Driver Monitoring System3 SYNC Setting | Display the SYNC setting stored in the driver monitoring system 3. | 01h: OFF 02h: ON | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System3 MAX A/C Setting | Display the MAX A/C setting stored in the driver monitoring system 3. | 01h: OFF 02h: ON | With driver monitoring system
Driver Monitoring System3 Climate Control - Mode Setting | Display the A/C main setting stored in the driver monitoring system 3. | 00h: NORMAL 01h: MILD 02h: POWERFUL 03h: ECO | With driver monitoring system
Driver Monitoring System3 Climate Control - Passenger Interlock | Display the A/C and passenger linking operation setting stored in the driver monitoring system 3. | 01h: OFF 02h: ON | With driver monitoring system
Driver monitoring system 4 temperature setting value (driver’s side) | Display the set temperature of the A/C control panel on driver’s side stored in the driver monitoring system 4. | 15 — 90 | With driver monitoring system
Driver monitoring system 4 temperature setting value (passenger’s side) | Display the set temperature of the A/C control panel on passenger’s side stored in the driver monitoring system 4. | 15 — 90 | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System4 Airflow Mode Setting | Display the target temperature of the blower vent stored in the driver monitoring system 4. | 01h: VENT 02h: VENT II 03h: B/L 04h: HEAT 05h: DEF/HEAT 06h: DEF 0Fh: AUTO | With driver monitoring system
Driver Monitoring System4 Blower Fan Setting | Display the blower fan setting stored in the driver monitoring system 4. | 00h: OFF 01h: LO 02h: M1 03h: M2 04h: M3 05h: M4 06h: M5 07h: HI 0Fh: AUTO | With driver monitoring system
Driver Monitoring System4 Fresh/Recircle Setting | Display the intake door setting stored in the driver monitoring system 4. | 01h: Recircle 02h: Fresh 0Fh: AUTO | With driver monitoring system
Driver Monitoring System4 A/C Setting | Display the A/C setting stored in the driver monitoring system 4. | 00h: OFF 02h: ON 0Fh: AUTO | With driver monitoring system
Driver Monitoring System4 AUTO Setting | Display the AUTO setting stored in the driver monitoring system 4. | 00h: MANUAL 01h: AUTO 02h: FULL AUTO | With driver monitoring system
Driver Monitoring System4 SYNC Setting | Display the SYNC setting stored in the driver monitoring system 4. | 01h: OFF 02h: ON | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System4 MAX A/C Setting | Display the MAX A/C setting stored in the driver monitoring system 4. | 01h: OFF 02h: ON | With driver monitoring system
Driver Monitoring System4 Climate Control - Mode Setting | Display the A/C main setting stored in the driver monitoring system 4. | 00h: NORMAL 01h: MILD 02h: POWERFUL 03h: ECO | With driver monitoring system
Driver Monitoring System4 Climate Control - Passenger Interlock | Display the A/C and passenger linking operation setting stored in the driver monitoring system 4. | 01h: OFF 02h: ON | With driver monitoring system
Driver monitoring system 5 temperature setting value (driver’s side) | Display the set temperature of the A/C control panel on driver’s side stored in the driver monitoring system 5. | 15 — 90 | With driver monitoring system
Driver monitoring system 5 temperature setting value (passenger’s side) | Display the set temperature of the A/C control panel on passenger’s side stored in the driver monitoring system 5. | 15 — 90 | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System5 Airflow Mode Setting | Display the target temperature of the blower vent stored in the driver monitoring system 5. | 01h: VENT 02h: VENT II 03h: B/L 04h: HEAT 05h: DEF/HEAT 06h: DEF 0Fh: AUTO | With driver monitoring system
Driver Monitoring System5 Blower Fan Setting | Display the blower fan setting stored in the driver monitoring system 5. | 00h: OFF 01h: LO 02h: M1 03h: M2 04h: M3 05h: M4 06h: M5 07h: HI 0Fh: AUTO | With driver monitoring system
Driver Monitoring System5 Fresh/Recircle Setting | Display the intake door setting stored in the driver monitoring system 5. | 01h: Recircle 02h: Fresh 0Fh: AUTO | With driver monitoring system
Driver Monitoring System5 A/C Setting | Display the A/C setting stored in the driver monitoring system 5. | 00h: OFF 02h: ON 0Fh: AUTO | With driver monitoring system
Driver Monitoring System5 AUTO Setting | Display the AUTO setting stored in the driver monitoring system 5. | 00h: MANUAL 01h: AUTO 02h: FULL AUTO | With driver monitoring system
Driver Monitoring System5 SYNC Setting | Display the SYNC setting stored in the driver monitoring system 5. | 01h: OFF 02h: ON | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System5 MAX A/C Setting | Display the MAX A/C setting stored in the driver monitoring system 5. | 01h: OFF 02h: ON | With driver monitoring system
Driver Monitoring System5 Climate Control - Mode Setting | Display the A/C main setting stored in the driver monitoring system 5. | 00h: NORMAL 01h: MILD 02h: POWERFUL 03h: ECO | With driver monitoring system
Driver Monitoring System5 Climate Control - Passenger Interlock | Display the A/C and passenger linking operation setting stored in the driver monitoring system 5. | 01h: OFF 02h: ON | With driver monitoring system

AIR CONDITIONER(DIAGNOSTICS) > Freeze Frame Data
OPERATION

- For detailed operation procedures, refer to “Common (Diagnostics)”. COMMON(diag)>Freeze Frame Data

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

AIR CONDITIONER(DIAGNOSTICS) > Freeze Frame Data
LIST

Item | Contents | Standard/Unit | Note
In-vehicle Sensor Temperature | Display the in-vehicle sensor value. | −72.47 — 193.82°C | —
Refrigerant Pressure | Display the pressure sensor (PH) value. | 0 — 3.29 MPa | —
Quantity of Sunload | Display the sunload sensor value. | 0 — 4448 W/m^2 | —
Heater Water Temperature | Display the engine coolant temperature. (CAN information) | −40.00 — 214 °C | —
Refrigerant Pressure | Display the pressure sensor (PD) value. | 0 — 3.29 MPa | —
Heater Control Panel Setting Value (Driver's) | Display the set temperature of the A/C control panel on driver’s seat side. | 15 — 90 | —
Heater Control Panel Setting Value (Passenger's) | Display the set temperature of the A/C control panel on passenger’s seat side. | 15 — 90 | With left/right independent air conditioning function
Blower outlet request temperature (Driver's) | Display the blow vents target temperature on driver’s side. | −327.68 — 327.67°C | —
Blower outlet request temperature (Passenger's) | Display the inner set value of the A/C control panel. (With left/right independent air conditioning function) | −327.68 — 327.67°C | With left/right independent air conditioning function
Air mix door actuator position (driver's side) | Display the driver’s seat air mix door actuator position information. | −32.68 — 133.33% | —
Air mix door actuator position (passenger's side) | Display the passenger’s seat air mix door actuator position information. | −32.68 — 133.33% | With left/right independent air conditioning function
Mode Door Actuator Position | Display the mode door actuator position information. | −32.68 — 133.33% | —
Fresh/Recircle Air Door Actuator Position | Display the intake door actuator position information. | −32.68 — 133.33% | —
Target air mix door actuator position (driver's side) | Display the driver’s seat air mix door actuator target position information. | −32.68 — 133.33% | —
Target air mix door actuator position (passenger's side) | Display the passenger’s seat air mix door actuator position information. | −32.68 — 133.33% | With left/right independent air conditioning function
Mode Door Actuator Position Target | Display the mode door actuator target position information. | −32.68 — 133.33% | —
Fresh/Recircle Air Door Actuator Position Target | Display the intake door actuator target position information. | −32.68 — 133.33% | —
Blower Fan Level | Display the blower fan motor speed level. | 0 — 255 | —
Ambient Air Temperature | Display the ambient sensor value. (CAN information) | −40 — 80 °C | —
Compressor operation status | Display the operation status of the compressor. | OFF/ON | —
Blower Fan Operating Condition | Display the operation status of the blower fan. | MANU/AUTO | —
A/C Operating Condition | Display the operation status of the compressor. | MANU/AUTO | —
Fresh/Recircle Air Operating Condition | Display the operation status of the FRESH/RECIRC. | MANU/AUTO | —
Mode Operating Condition | Display the operation status of the blow vents. | MANU/AUTO | —
Rear Defogger | Display the operation status of the rear defogger switch. | OFF/ON | —
Engine Speed | Display the engine speed. (CAN information) | 0 — 32767 rpm | —
Vehicle Speed | Display the vehicle speed. (CAN information) | 0 — 300 km/h | —
Evaporator Temperature | Display the evaporator sensor value. | −82.48 — 153.55°C | —
Evaporator Temperature Target | Display the evaporator target temperature. | 0 — 20 °C | —
Variable Flow Change Solenoid Duty | Display Duty value of the variable flow change solenoid valve. | 0 — 100 % | —
Variable Load Compressor Torque Value | Display the estimated load torque value of the variable compressor. | 0 — 100 Nm | —
Climate Control - Mode Setting | Display the selection of A/C basic operation pattern. | NORMAL/MILD/POWERFUL/ECO | High grade MFD specification
Climate Control - Passenger Interlock | Display the change pattern of A/C operation depending on passengers. | OFF/ON | High grade MFD specification
Request Compressor Speed during Idling | Display the request compressor rotational speed at idling. | 650 — 1425 rpm | —
Request engine speed | Display the request engine speed. | 0: Without Request/1: Cooler H/2: Hearter H/3: Cooler L/4: Heater L/5: Heater M/6: Heater LL | —
Heater core Temp. | Display the heater core sensor readings. | −40 — 214 °C | With Auto Start Stop
Humidity | Display humidity sensor readings. | 0 — 100 % | With humidity sensor
Driver monitoring system 1 temperature setting value (driver’s side) | Display the set temperature of the A/C control panel on driver’s side stored in the driver monitoring system 1. | 15 — 90 | With driver monitoring system
Driver monitoring system 1 temperature setting value (passenger’s side) | Display the set temperature of the A/C control panel on passenger’s side stored in the driver monitoring system 1. | 15 — 90 | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System1 Airflow Mode Setting | Display the target temperature of the blower vent stored in the driver monitoring system 1. | 01h: VENT 02h: VENT II 03h: B/L 04h: HEAT 05h: DEF/HEAT 06h: DEF 0Fh: AUTO | With driver monitoring system
Driver Monitoring System1 Blower Fan Setting | Display the blower fan setting stored in the driver monitoring system 1. | 00h: OFF 01h: LO 02h: M1 03h: M2 04h: M3 05h: M4 06h: M5 07h: HI 0Fh: AUTO | With driver monitoring system
Driver Monitoring System1 Fresh/Recircle Setting | Display the intake door setting stored in the driver monitoring system 1. | 01h: Recircle 02h: Fresh 0Fh: AUTO | With driver monitoring system
Driver Monitoring System1 A/C Setting | Display the A/C setting stored in the driver monitoring system 1. | 00h: OFF 02h: ON 0Fh: AUTO | With driver monitoring system
Driver Monitoring System1 AUTO Setting | Display the AUTO setting stored in the driver monitoring system 1. | 00h: MANUAL 01h: AUTO 02h: FULL AUTO | With driver monitoring system
Driver Monitoring System1 SYNC Setting | Display the SYNC setting stored in the driver monitoring system 1. | 01h: OFF 02h: ON | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System1 MAX A/C Setting | Display the MAX A/C setting stored in the driver monitoring system 1. | 01h: OFF 02h: ON | With driver monitoring system
Driver Monitoring System1 Climate Control - Mode Setting | Display the A/C main setting stored in the driver monitoring system 1. | 00h: NORMAL 01h: MILD 02h: POWERFUL 03h: ECO | With driver monitoring system
Driver Monitoring System1 Climate Control - Passenger Interlock | Display the A/C and passenger linking operation setting stored in the driver monitoring system 1. | 01h: OFF 02h: ON | With driver monitoring system
Driver monitoring system 2 temperature setting value (driver’s side) | Display the set temperature of the A/C control panel on driver’s side stored in the driver monitoring system 2. | 15 — 90 | With driver monitoring system
Driver monitoring system 2 temperature setting value (passenger’s side) | Display the set temperature of the A/C control panel on passenger’s side stored in the driver monitoring system 2. | 15 — 90 | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System2 Airflow Mode Setting | Display the target temperature of the blower vent stored in the driver monitoring system 2. | 01h: VENT 02h: VENT II 03h: B/L 04h: HEAT 05h: DEF/HEAT 06h: DEF 0Fh: AUTO | With driver monitoring system
Driver Monitoring System2 Blower Fan Setting | Display the blower fan setting stored in the driver monitoring system 2. | 00h: OFF 01h: LO 02h: M1 03h: M2 04h: M3 05h: M4 06h: M5 07h: HI 0Fh: AUTO | With driver monitoring system
Driver Monitoring System2 Fresh/Recircle Setting | Display the intake door setting stored in the driver monitoring system 2. | 01h: Recircle 02h: Fresh 0Fh: AUTO | With driver monitoring system
Driver Monitoring System2 A/C Setting | Display the A/C setting stored in the driver monitoring system 2. | 00h: OFF 02h: ON 0Fh: AUTO | With driver monitoring system
Driver Monitoring System2 AUTO Setting | Display the AUTO setting stored in the driver monitoring system 2. | 00h: MANUAL 01h: AUTO 02h: FULL AUTO | With driver monitoring system
Driver Monitoring System2 SYNC Setting | Display the SYNC setting stored in the driver monitoring system 2. | 01h: OFF 02h: ON | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System2 MAX A/C Setting | Display the MAX A/C setting stored in the driver monitoring system 2. | 01h: OFF 02h: ON | With driver monitoring system
Driver Monitoring System2 Climate Control - Mode Setting | Display the A/C main setting stored in the driver monitoring system 2. | 00h: NORMAL 01h: MILD 02h: POWERFUL 03h: ECO | With driver monitoring system
Driver Monitoring System2 Climate Control - Passenger Interlock | Display the A/C and passenger linking operation setting stored in the driver monitoring system 2. | 01h: OFF 02h: ON | With driver monitoring system
Driver monitoring system 3 temperature setting value (driver’s side) | Display the set temperature of the A/C control panel on driver’s side stored in the driver monitoring system 3. | 15 — 90 | With driver monitoring system
Driver monitoring system 3 temperature setting value (passenger’s side) | Display the set temperature of the A/C control panel on passenger’s side stored in the driver monitoring system 3. | 15 — 90 | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System3 Airflow Mode Setting | Display the target temperature of the blower vent stored in the driver monitoring system 3. | 01h: VENT 02h: VENT II 03h: B/L 04h: HEAT 05h: DEF/HEAT 06h: DEF 0Fh: AUTO | With driver monitoring system
Driver Monitoring System3 Blower Fan Setting | Display the blower fan setting stored in the driver monitoring system 3. | 00h: OFF 01h: LO 02h: M1 03h: M2 04h: M3 05h: M4 06h: M5 07h: HI 0Fh: AUTO | With driver monitoring system
Driver Monitoring System3 Fresh/Recircle Setting | Display the intake door setting stored in the driver monitoring system 3. | 01h: Recircle 02h: Fresh 0Fh: AUTO | With driver monitoring system
Driver Monitoring System3 A/C Setting | Display the A/C setting stored in the driver monitoring system 3. | 00h: OFF 02h: ON 0Fh: AUTO | With driver monitoring system
Driver Monitoring System3 AUTO Setting | Display the AUTO setting stored in the driver monitoring system 3. | 00h: MANUAL 01h: AUTO 02h: FULL AUTO | With driver monitoring system
Driver Monitoring System3 SYNC Setting | Display the SYNC setting stored in the driver monitoring system 3. | 01h: OFF 02h: ON | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System3 MAX A/C Setting | Display the MAX A/C setting stored in the driver monitoring system 3. | 01h: OFF 02h: ON | With driver monitoring system
Driver Monitoring System3 Climate Control - Mode Setting | Display the A/C main setting stored in the driver monitoring system 3. | 00h: NORMAL 01h: MILD 02h: POWERFUL 03h: ECO | With driver monitoring system
Driver Monitoring System3 Climate Control - Passenger Interlock | Display the A/C and passenger linking operation setting stored in the driver monitoring system 3. | 01h: OFF 02h: ON | With driver monitoring system
Driver monitoring system 4 temperature setting value (driver’s side) | Display the set temperature of the A/C control panel on driver’s side stored in the driver monitoring system 4. | 15 — 90 | With driver monitoring system
Driver monitoring system 4 temperature setting value (passenger’s side) | Display the set temperature of the A/C control panel on passenger’s side stored in the driver monitoring system 4. | 15 — 90 | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System4 Airflow Mode Setting | Display the target temperature of the blower vent stored in the driver monitoring system 4. | 01h: VENT 02h: VENT II 03h: B/L 04h: HEAT 05h: DEF/HEAT 06h: DEF 0Fh: AUTO | With driver monitoring system
Driver Monitoring System4 Blower Fan Setting | Display the blower fan setting stored in the driver monitoring system 4. | 00h: OFF 01h: LO 02h: M1 03h: M2 04h: M3 05h: M4 06h: M5 07h: HI 0Fh: AUTO | With driver monitoring system
Driver Monitoring System4 Fresh/Recircle Setting | Display the intake door setting stored in the driver monitoring system 4. | 01h: Recircle 02h: Fresh 0Fh: AUTO | With driver monitoring system
Driver Monitoring System4 A/C Setting | Display the A/C setting stored in the driver monitoring system 4. | 00h: OFF 02h: ON 0Fh: AUTO | With driver monitoring system
Driver Monitoring System4 AUTO Setting | Display the AUTO setting stored in the driver monitoring system 4. | 00h: MANUAL 01h: AUTO 02h: FULL AUTO | With driver monitoring system
Driver Monitoring System4 SYNC Setting | Display the SYNC setting stored in the driver monitoring system 4. | 01h: OFF 02h: ON | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System4 MAX A/C Setting | Display the MAX A/C setting stored in the driver monitoring system 4. | 01h: OFF 02h: ON | With driver monitoring system
Driver Monitoring System4 Climate Control - Mode Setting | Display the A/C main setting stored in the driver monitoring system 4. | 00h: NORMAL 01h: MILD 02h: POWERFUL 03h: ECO | With driver monitoring system
Driver Monitoring System4 Climate Control - Passenger Interlock | Display the A/C and passenger linking operation setting stored in the driver monitoring system 4. | 01h: OFF 02h: ON | With driver monitoring system
Driver monitoring system 5 temperature setting value (driver’s side) | Display the set temperature of the A/C control panel on driver’s side stored in the driver monitoring system 5. | 15 — 90 | With driver monitoring system
Driver monitoring system 5 temperature setting value (passenger’s side) | Display the set temperature of the A/C control panel on passenger’s side stored in the driver monitoring system 5. | 15 — 90 | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System5 Airflow Mode Setting | Display the target temperature of the blower vent stored in the driver monitoring system 5. | 01h: VENT 02h: VENT II 03h: B/L 04h: HEAT 05h: DEF/HEAT 06h: DEF 0Fh: AUTO | With driver monitoring system
Driver Monitoring System5 Blower Fan Setting | Display the blower fan setting stored in the driver monitoring system 5. | 00h: OFF 01h: LO 02h: M1 03h: M2 04h: M3 05h: M4 06h: M5 07h: HI 0Fh: AUTO | With driver monitoring system
Driver Monitoring System5 Fresh/Recircle Setting | Display the intake door setting stored in the driver monitoring system 5. | 01h: Recircle 02h: Fresh 0Fh: AUTO | With driver monitoring system
Driver Monitoring System5 A/C Setting | Display the A/C setting stored in the driver monitoring system 5. | 00h: OFF 02h: ON 0Fh: AUTO | With driver monitoring system
Driver Monitoring System5 AUTO Setting | Display the AUTO setting stored in the driver monitoring system 5. | 00h: MANUAL 01h: AUTO 02h: FULL AUTO | With driver monitoring system
Driver Monitoring System5 SYNC Setting | Display the SYNC setting stored in the driver monitoring system 5. | 01h: OFF 02h: ON | With driver monitoring system With left/right independent air conditioning function
Driver Monitoring System5 MAX A/C Setting | Display the MAX A/C setting stored in the driver monitoring system 5. | 01h: OFF 02h: ON | With driver monitoring system
Driver Monitoring System5 Climate Control - Mode Setting | Display the A/C main setting stored in the driver monitoring system 5. | 00h: NORMAL 01h: MILD 02h: POWERFUL 03h: ECO | With driver monitoring system
Driver Monitoring System5 Climate Control - Passenger Interlock | Display the A/C and passenger linking operation setting stored in the driver monitoring system 5. | 01h: OFF 02h: ON | With driver monitoring system

AIR CONDITIONER(DIAGNOSTICS) > Active Test
OPERATION
1.

On [Start] screen, select [Diagnosis].

2.

On [Vehicle selection] screen, input the target vehicle information and select [OK].

3.

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

4.

On [Select System] screen, select [Air Conditioner], and then select [Enter].

5.

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

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

- For details on active tests, refer to the list. AIR CONDITIONER(DIAGNOSTICS)>Active Test>LIST

AIR CONDITIONER(DIAGNOSTICS) > Active Test
LIST

If not equipped (depending on destination area or vehicle equipment condition), some items are not displayed.

Active test items | Range | Contents | Execution condition
In-vehicle Air Temperature setting | −72.47 — 193.82°C | Set in-vehicle sensor readings. Adjusting the in-vehicle sensor value to use for A/C control is useful for reproduction test in faulty events. | Ignition switch ON Engine ON is recommended.
Ambient Air Temperature Setting | −40 — 80 °C | Set ambient sensor readings. Adjusting the ambient sensor value to use for A/C control is useful for reproduction test in faulty events. | Ignition switch ON Engine ON is recommended.
Quantity of Sunload Setting | 0 — 4448 W/m2 | Set sunload sensor readings. Adjusting the sunload sensor value to use for A/C control is useful for reproduction test in faulty events. | Ignition switch ON Engine ON is recommended.
Heater Water Temperature Setting | −40 — 214 °C | Set coolant temperature sensor readings. Adjusting the coolant temperature sensor value to use for A/C control is useful for reproduction test in faulty events. | Engine ON
AUTO switch mode setting | ON | Transmit ON signal of AUTO switch contact. By operating A/C with the signal, it is possible to judge whether the control is faulty or the switch (A/C control panel) is faulty. | Ignition switch ON Engine ON is recommended.
Air mix door actuator target open (driver's side) | −32.68 — 133.33 % | Set the driver’s seat air mix door actuator opening angle. Useful for reproduction test in faulty events. | Ignition switch ON Engine ON is recommended.
Air mix door actuator target open (passenger's side) | −32.68 — 133.33 % | Set the passenger’s seat air mix door actuator opening angle. Useful for reproduction test in faulty events. | Ignition switch ON Engine ON is recommended.
Fresh/Rec Air Dr Act Trgt Open Angle | −32.68 — 133.33 % | Set the intake door actuator opening angle. Useful for reproduction test in faulty events. | Ignition switch ON Engine ON is recommended.
Mode Door Actuator Opening Angle Target | −32.68 — 133.33 % | Set the mode door actuator opening angle. Useful for reproduction test in faulty events. | Ignition switch ON Engine ON is recommended.
Blower Fan Level Setting | 0 — 255 Input up to 255 is possible, but 100 — 255 is the same. | Set the blower fan level. Useful for reproduction test in faulty events. | Ignition switch ON Engine ON is recommended. Compressor OFF is needed to set the level to 0.
A/C Change Setting | ON/OFF | Set the compressor operation request. Useful for reproduction test in faulty events. | Engine ON Blower ON
Rear Defogger Setting | ON/OFF | Transmit the rear defogger switch contact signal. By operating A/C with the signal, it is possible to judge whether the control is faulty or the switch (A/C control panel) is faulty. | Ignition switch ON Engine ON is recommended.
Variable Flow Change Solenoid Duty | 0 — 100% | Set Duty value of variable flow change solenoid valve. Useful for reproduction test in faulty events. The setting value may not be obtained due to A/C circuit protection. | Engine ON Compressor ON Blower ON
Heater core temperature setting | −40 — 214 °C | Set the heater core sensor readings. Adjusting the heater core sensor value to use for A/C control is useful for reproduction test in faulty events. | Ignition switch ON Engine ON is recommended.
Humidity Setting | 0 — 100% | Set humidity sensor readings. Adjusting the humidity sensor value to use for A/C control is useful for reproduction test in faulty events. | Ignition switch ON Engine ON is recommended.

AIR CONDITIONER(DIAGNOSTICS) > Customize
OPERATION
1.

On [Start] screen, select [Diagnosis].

2.

On [Vehicle selection] screen, input the target vehicle information and select [OK].

3.

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

4.

On [Select System] screen, select [Air Conditioner], and then select [Enter].

5.

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

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

- For details on customization, refer to the list. AIR CONDITIONER(DIAGNOSTICS)>Customize>LIST

AIR CONDITIONER(DIAGNOSTICS) > Customize
LIST

Items | Initial setting value | Setting value | Note
Fresh/Recircle Air Door Auto Mode | AUTO | AUTO | When AUTO mode is actuated, inlet switching is also automatically operated.
MANU | Even when AUTO mode is actuated, inlet switching is not automatically operated. (Switching can only be manually operated)
Compressor auto mode | AUTO | AUTO | When AUTO mode is actuated, compressor is also automatically operated.
MANU | Even when AUTO mode is actuated, compressor is not automatically operated. (Switching can only be manually operated)
Setting temperature shift | 0 | −3 | Adjust the A/C target value relative to the set temperature.
−2
−1
0
+1
+2
+3
Mode/VentII | Yes | Yes | When AUTO mode is operated, VENT II mode (upper wind: large, lower wind: small) is present.
No | When AUTO mode is operated, VENT II mode (upper wind: large, lower wind: small) is absent.
Mode/All Flow | Yes | Yes | When AUTO mode is operated, all-flow mode (wind comes from all blower vents) is present.
No | When AUTO mode is operated, all-flow mode (wind comes from all blower vents) is absent.
Mode/HeatIII | Yes | Yes | When AUTO mode is operated, HEAT III mode (footwell/DEF ratio is different) is present.
No | When AUTO mode is operated, HEAT III mode (footwell/DEF ratio is different) is absent.
Release Max A/C by Mode Sw | Yes | Yes | When the mode switch is operated in MAX A/C status, MAX A/C status is deactivated.
No | Even when the mode switch is operated in MAX A/C status, MAX A/C status is not deactivated.

AIR CONDITIONER(DIAGNOSTICS) > Work Support
OPERATION
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 [Air Conditioner], and then select [Enter].

5.

On [Select Function] screen, select [Work Support] and select [Next].

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

- For details on the work support, refer to the list. AIR CONDITIONER(DIAGNOSTICS)>Work Support>LIST

AIR CONDITIONER(DIAGNOSTICS) > Work Support
LIST

- Item | Contents | Remarks
  Actuator Origin Reset | Performing compensation of original point can correct the offset of operation for each actuator. | Ignition switch ON Engine ON recommended
  Read Control module setting information∗1 | If the A/C control panel is replaced, it is possible to read the A/C personal setting information of the driver monitoring system set by the user using Subaru Select Monitor, and write it to the new A/C control panel. | According to the display screen, save and close the file.
  Write Contorol module setting information∗1 | If the A/C control panel is replaced, it is possible to read the A/C personal setting information of the driver monitoring system set by the user using Subaru Select Monitor, and write it to the new A/C control panel. | Perform the operation according to the display screen.

- ∗1 With driver monitoring system

AIR CONDITIONER(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. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Trouble Code (DTC)
LIST

Code | Description & trouble part | Reference
B1430 | IN-VEHICLE (POST EVAPORATOR) TEMPERATURE SENSOR CIRCUIT OPEN | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1430 IN-VEHICLE (POST EVAPORATOR) TEMPERATURE SENSOR CIRCUIT OPEN
B1431 | IN-VEHICLE (POST EVAPORATOR) TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1431 IN-VEHICLE (POST EVAPORATOR) TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT
B1432 | AMBIENT TEMPERATURE SENSOR CIRCUIT OPEN (AIR-CONDITIONER) | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1432 AMBIENT TEMPERATURE SENSOR CIRCUIT OPEN (AIR-CONDITIONER)
B1433 | AMBIENT TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT (AIR-CONDITIONER) | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1433 AMBIENT TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT (AIR-CONDITIONER)
B1434 | EVAPORATOR TEMPERATURE SENSOR CIRCUIT OPEN | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1434 EVAPORATOR TEMPERATURE SENSOR CIRCUIT OPEN
B1435 | EVAPORATOR TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1435 EVAPORATOR TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT
B1436 | AIR MIX DOOR ACTUATOR CIRCUIT OPEN (PASSENGER) | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1436 AIR MIX DOOR ACTUATOR CIRCUIT OPEN (PASSENGER)
B1437 | AIR MIX DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT (PASSENGER) | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1437 AIR MIX DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT (PASSENGER)
B1438 | MODE DOOR ACTUATOR CIRCUIT OPEN | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1438 MODE DOOR ACTUATOR CIRCUIT OPEN
B1439 | MODE DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1439 MODE DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT
B1440 | AIR MIX DOOR ACTUATOR CIRCUIT OPEN (DRIVER) | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1440 AIR MIX DOOR ACTUATOR CIRCUIT OPEN (DRIVER)
B1442 | AIR MIX DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT (DRIVER) | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1442 AIR MIX DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT (DRIVER)
B14A1 | SUNLOAD SENSOR CIRCUIT LOW/OPEN | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14A1 SUNLOAD SENSOR CIRCUIT LOW/OPEN When the sunload sensor inspection is performed indoors or in the shade, it may be diagnosed as having an open circuit due to an insufficient light volume. In this case, check the sunload sensor at a location exposed to direct sunlight.
B14A2 | SUNLOAD SENSOR CIRCUIT SHORT-CIRCUIT | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14A2 SUNLOAD SENSOR CIRCUIT SHORT-CIRCUIT When the sunload sensor inspection is performed indoors or in the shade, it may be diagnosed as having an open circuit due to an insufficient light volume. In this case, check the sunload sensor at a location exposed to direct sunlight.
B14A3 | REFRIGERANT PRESSURE SENSOR CIRCUIT OPEN | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14A3 REFRIGERANT PRESSURE SENSOR CIRCUIT OPEN
B14A4 | REFRIGERANT PRESSURE SENSOR CIRCUIT SHORT-CIRCUIT | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14A4 REFRIGERANT PRESSURE SENSOR CIRCUIT SHORT-CIRCUIT
B14A7 | VARIABLE SOLENOID VALVE CIRCUIT | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14A7 VARIABLE SOLENOID VALVE CIRCUIT
B14A8 | COMPRESSOR BREAK-IN MALFUNCTION LOW REFRIGERANT | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14A8 COMPRESSOR BREAK-IN MALFUNCTION LOW REFRIGERANT
B14EE | REFRIGERANT PRESSURE SENSOR CIRCUIT OPEN (HOSE PRESSURE DISCHARGE) | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14EE REFRIGERANT PRESSURE SENSOR CIRCUIT OPEN (HOSE PRESSURE DISCHARGE)
B14EF | REFRIGERANT PRESSURE SENSOR CIRCUIT SHORT-CIRCUIT (HOSE PRESSURE DISCHARGE) | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14EF REFRIGERANT PRESSURE SENSOR CIRCUIT SHORT-CIRCUIT (HOSE PRESSURE DISCHARGE)
B14E7 | HEATER CORE SENSOR CIRCUIT OPEN | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14E7 HEATER CORE SENSOR CIRCUIT OPEN
B14E8 | HEATER CORE SENSOR CIRCUIT SHORT-CIRCUIT | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14E8 HEATER CORE SENSOR CIRCUIT SHORT-CIRCUIT
B14E9 | INTAKE DOOR ACTUATOR CIRCUIT OPEN | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14E9 INTAKE DOOR ACTUATOR CIRCUIT OPEN
B14EA | INTAKE DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14EA INTAKE DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT
B14EB | INTAKE DOOR ACTUATOR STUCK | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14EB INTAKE DOOR ACTUATOR STUCK
B14EC | HUMIDITY SENSOR CIRCUIT OPEN | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14EC HUMIDITY SENSOR CIRCUIT OPEN
B14ED | HUMIDITY SENSOR CIRCUIT SHORT | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14ED HUMIDITY SENSOR CIRCUIT SHORT
U0073 | CONTROL MODULE COMMUNICATION BUS OFF | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0073 CONTROL MODULE COMMUNICATION BUS OFF
U0100 | LOST COMMUNICATION WITH ECM/PCM "A" | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0100 LOST COMMUNICATION WITH ECM/PCM "A"
U0122 | LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE
U0140 | LOST COMMUNICATION WITH BODY CONTROL MODULE | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0140 LOST COMMUNICATION WITH BODY CONTROL MODULE
U0151 | LOST COMMUNICATION WITH RESTRAINTS CONTROL MODULE | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0151 LOST COMMUNICATION WITH RESTRAINTS CONTROL MODULE
U0155 | LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE
U0156 | LOST COMMUNICATION WITH INFORMATION CENTER "A" | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0156 LOST COMMUNICATION WITH INFORMATION CENTER "A"
U0401 | INVALID DATA RECEIVED FROM ECM/PCM "A" | AIR CONDITIONER(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 | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0416 INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE
U0422 | INVALID DATA RECEIVED FROM BODY CONTROL MODULE | AIR CONDITIONER(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 | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE
U0452 | INVALID DATA RECEIVED FROM RESTRAINTS CONTROL MODULE | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0452 INVALID DATA RECEIVED FROM RESTRAINTS CONTROL MODULE
U0457 | INVALID DATA RECEIVED FROM INFORMATION CENTER "A" | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0457 INVALID DATA RECEIVED FROM INFORMATION CENTER "A"
U1120 | LOST COMMUNICATION WITH AUTOSTART STOP CONTROL MODULE | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U1120 LOST COMMUNICATION WITH AUTOSTART STOP CONTROL MODULE
U123A | LOST COMMUNICATION WITH DRIVER MONITORING SYSTEM | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U123A LOST COMMUNICATION WITH DRIVER MONITORING SYSTEM
U143A | INVALID DATA RECEIVED FROM DRIVER MONITORING SYSTEM | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U143A INVALID DATA RECEIVED FROM DRIVER MONITORING SYSTEM
U1469 | INVALID DATA RECEIVED FROM AUTOSTART STOP CONTROL MODULE | AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U1469 INVALID DATA RECEIVED FROM AUTOSTART STOP CONTROL MODULE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B1430 IN-VEHICLE (POST EVAPORATOR) TEMPERATURE SENSOR CIRCUIT OPEN

DTC detecting condition:

Temperature and humidity sensor (in-vehicle temperature) circuit is open.

Trouble symptom:

In-vehicle air temperature is falsely recognized as 25°C (77°F), and the compartment temperature is adjusted.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector and the temperature and humidity sensor connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1430 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK TEMPERATURE AND HUMIDITY SENSOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the in-vehicle sensor or temperature and humidity sensor.

3.

Short the connector (i173).

4.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1431 displayed? (Current malfunction)

Replace the temperature and humidity sensor. AIR CONDITIONER>Temperature and Humidity Sensor

3

3. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Restore the temporary shorted lines made in step 2.

3.

Turn the ignition switch to ON.

4.

Using a tester, measure the voltage between terminals in temperature and humidity sensor connector.

Connector & terminal

(i173) No. 1 (+) — (i173) No. 2 (−):

Is the voltage 4.5 — 5.0 V?

4

Repair or replace the open circuit of harness.

4. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector from the A/C control panel.

3.

Using a tester, check the continuity between the A/C control panel connector and temperature and humidity sensor connector.

Connector & terminal

(i173) No. 2 — (i88) No. 14:

(i173) No. 1 — (i88) No. 17:

Is there continuity?

Replace the A/C control panel. AIR CONDITIONER>Control Panel

Repair or replace the open circuit of harness.

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B1431 IN-VEHICLE (POST EVAPORATOR) TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT

DTC detecting condition:

Temperature and humidity sensor (in-vehicle temperature) circuit is shorted.

Trouble symptom:

In-vehicle air temperature is falsely recognized as 25°C (77°F), and the compartment temperature is adjusted.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector and the temperature and humidity sensor connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1431 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK TEMPERATURE AND HUMIDITY SENSOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the temperature and humidity sensor. AIR CONDITIONER>Temperature and Humidity Sensor

3.

Turn the ignition switch to ON.

4.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1430 displayed? (Current malfunction)

Replace the temperature and humidity sensor. AIR CONDITIONER>Temperature and Humidity Sensor

3

3. CHECK HARNESS.
1.

Using a tester, measure the voltage between terminals in in-vehicle sensor connector or temperature and humidity sensor connector.

Connector & terminal

(i173) No. 1 (+) — (i173) No. 2 (−):

Is the voltage 4.5 — 5.0 V?

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

4

4. CHECK HARNESS (SHORTED BETWEEN LINES).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector from the A/C control panel.

3.

Using a tester, check the continuity between terminals in temperature and humidity sensor connector.

Connector & terminal

(i173) No. 1 — (i173) No. 2:

Is there continuity?

Repair or replace the short circuit of the harness.

Replace the A/C control panel. AIR CONDITIONER>Control Panel

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B1432 AMBIENT TEMPERATURE SENSOR CIRCUIT OPEN (AIR-CONDITIONER)

DTC detecting condition:

- Ambient sensor to combination meter circuit is open.

- Data to be received from the combination meter via CAN communication do not arrive.

Trouble symptom:

- Defective ambient temperature display

- Ambient temperature is falsely recognized as 25°C, and the compartment temperature is adjusted.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check the connecting conditions of combination meter connector and ambient sensor connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1432 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK AMBIENT SENSOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the ambient sensor.

3.

Short the connector (B640).

4.

Turn the ignition switch to ON.

5.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1433 displayed? (Current malfunction)

Replace the ambient sensor. AIR CONDITIONER>Ambient Sensor>REMOVAL

3

3. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Restore the temporary shorted lines made in step 2.

3.

Turn the ignition switch to ON.

4.

Using a tester, measure the voltage between terminals in ambient sensor connector.

Connector & terminal

(B640) No. 2 (+) — (B640) No. 1 (−):

Is the voltage 4.5 — 5.0 V?

4

Repair or replace the open circuit of harness.

4. CHECK HARNESS (OPEN CIRCUIT).
1.

Disconnect the connector from the combination meter.

2.

Using a tester, check the continuity between combination meter connector and ambient sensor connector.

Connector & terminal

(B640) No. 1 — (i10) No. 24:

(B640) No. 2 — (i10) No. 23:

Is there continuity?

Replace the combination meter. INSTRUMENTATION/DRIVER INFO>Combination Meter>REMOVAL

Repair or replace the open circuit of harness.

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B1433 AMBIENT TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT (AIR-CONDITIONER)

DTC detecting condition:

- Ambient sensor to combination meter circuit is open.

- Data to be received from the combination meter via CAN communication do not arrive.

Trouble symptom:

- Defective ambient temperature display

- Ambient temperature is falsely recognized as 25°C, and the compartment temperature is adjusted.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check the connecting conditions of combination meter connector and ambient sensor connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1433 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK AMBIENT SENSOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the ambient sensor. AIR CONDITIONER>Ambient Sensor>REMOVAL

3.

Turn the ignition switch to ON.

4.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1432 displayed? (Current malfunction)

Replace the ambient sensor. AIR CONDITIONER>Ambient Sensor>REMOVAL

3

3. CHECK HARNESS.
1.

Turn the ignition switch to ON.

2.

Using a tester, measure the voltage between terminals in ambient sensor connector.

Connector & terminal

(B640) No. 2 (+) — (B640) No. 1 (−):

Is the voltage 4.5 — 5.0 V?

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

4

4. CHECK HARNESS (SHORTED BETWEEN LINES).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector from the combination meter.

3.

Using a tester, check the continuity between terminals in ambient sensor connector.

Connector & terminal

(B640) No. 1 — (B640) No. 2:

Is there continuity?

Repair or replace the short circuit of the harness.

Replace the combination meter. INSTRUMENTATION/DRIVER INFO>Combination Meter>REMOVAL

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B1434 EVAPORATOR TEMPERATURE SENSOR CIRCUIT OPEN

DTC detecting condition:

Evaporator sensor circuit is open.

Trouble symptom:

- Compressor does not operate.

- Evaporator temperature is falsely recognized as low, and the compartment temperature is adjusted.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector and evaporator sensor connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1434 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK EVAPORATOR SENSOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the evaporator sensor.

3.

Short the connector (i172).

4.

Turn the ignition switch to ON.

5.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1435 displayed? (Current malfunction)

Replace the evaporator sensor. AIR CONDITIONER>Evaporator>REMOVAL

3

3. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Restore the temporary shorted lines made in step 2.

3.

Turn the ignition switch to ON.

4.

Using a tester, measure the voltage between terminals in evaporator sensor connector.

Connector & terminal

(i172) No. 2 (+) — (i172) No. 1 (−):

Is the voltage 4.5 — 5.0 V?

4

Repair or replace the open circuit of harness.

4. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector from the A/C control panel.

3.

Using a tester, check the continuity between A/C control panel connector and evaporator sensor connector terminals.

Connector & terminal

(i172) No. 1 — (i88) No. 14:

(I172) No. 2 — (i88) No. 18:

Is there continuity?

Replace the A/C control panel. AIR CONDITIONER>Control Panel

Repair or replace the open circuit of harness.

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B1435 EVAPORATOR TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT

DTC detecting condition:

Evaporator sensor circuit is shorted.

Trouble symptom:

Evaporator temperature is falsely recognized as low, and the compartment temperature is adjusted.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector and evaporator sensor connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1435 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK EVAPORATOR SENSOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the evaporator sensor.

3.

Turn the ignition switch to ON.

4.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1434 displayed? (Current malfunction)

Replace the evaporator sensor. AIR CONDITIONER>Evaporator>REMOVAL

3

3. CHECK HARNESS.
1.

Turn the ignition switch to ON.

2.

Using a tester, measure the voltage between terminals in evaporator sensor connector.

Connector & terminal

(i172) No. 2 (+) — (i172) No. 1 (−):

Is the voltage 4.5 — 5.0 V?

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

4

4. CHECK HARNESS (SHORTED BETWEEN LINES).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector from the A/C control panel.

3.

Using a tester, check the continuity between terminals in evaporator sensor connector.

Connector & terminal

(i172) No. 1 — (i172) No. 2:

Is there continuity?

Repair or replace the short circuit of the harness.

Replace the A/C control panel. AIR CONDITIONER>Control Panel

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B1436 AIR MIX DOOR ACTUATOR CIRCUIT OPEN (PASSENGER)

DTC detecting condition:

Air mix door actuator stepping motor circuit is open.

Trouble symptom:

Temperature cannot be adjusted.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check the condition of connector connection.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1436 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK POWER SUPPLY OF AIR MIX DOOR ACTUATOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the air mix door actuator connector.

3.

Turn the ignition switch to ON.

4.

Measure the voltage between the air mix door actuator connector terminal and chassis ground.

Connector & terminal

(i174) No. 3 (+) — Chassis ground (−):

Is the voltage approx. 10 V or more?

3

Check the DC power supply circuit.

3. CHECK AIR MIX DOOR ACTUATOR.
1.

Turn the ignition switch to OFF.

2.

Measure the internal resistance of the air mix door actuator using a tester.

Connector & terminal

Air mix door actuator RH

No. 3 — No. 1:

No. 3 — No. 2:

No. 3 — No. 5:

No. 3 — No. 6:

Is the resistance 80 — 100 Ω?

4

Replace the actuator. AIR CONDITIONER>Air Mix Door Actuator>REMOVAL

4. CHECK HARNESS BETWEEN A/C CONTROL PANEL AND AIR MIX DOOR ACTUATOR (OPEN).
1.

Disconnect the A/C control panel connector.

2.

Measure the resistance between A/C control panel and air mix door actuator connector.

Connector & terminal

(i174) No. 1 — (i88) No. 28:

(i174) No. 2 — (i88) No. 27:

(i174) No. 5 — (i88) No. 26:

(i174) No. 6 — (i88) No. 25:

Is there continuity?

Replace the A/C control panel. AIR CONDITIONER>Control Panel>REMOVAL

Repair or replace the open circuit of harness.

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B1437 AIR MIX DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT (PASSENGER)

DTC detecting condition:

Air mix door actuator stepping motor circuit is shorted.

Trouble symptom:

Temperature cannot be adjusted.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check the condition of connector connection.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1437 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK POWER SUPPLY OF AIR MIX DOOR ACTUATOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the air mix door actuator connector.

3.

Turn the ignition switch to ON.

4.

Measure the voltage between the air mix door actuator connector terminal and chassis ground.

Connector & terminal

(i174) No. 3 (+) — Chassis ground (−):

Is the voltage approx. 10 V or more?

3

Check the DC power supply circuit.

3. CHECK AIR MIX DOOR ACTUATOR.
1.

Turn the ignition switch to OFF.

2.

Measure the internal resistance of the air mix door actuator using a tester.

Connector & terminal

Air mix door actuator RH

No. 3 — No. 1:

No. 3 — No. 2:

No. 3 — No. 5:

No. 3 — No. 6:

Is the resistance 80 — 100 Ω?

4

Replace the actuator. AIR CONDITIONER>Air Mix Door Actuator>REMOVAL

4. CHECK HARNESS BETWEEN A/C CONTROL PANEL AND AIR MIX DOOR ACTUATOR (SHORTED TO POWER SUPPLY).
1.

Disconnect the A/C control panel connector.

2.

Measure the voltage between air mix door actuator connector and chassis ground.

Connector & terminal

(i174) No. 1 (+) — Chassis ground (−):

(i174) No. 2 (+) — Chassis ground (−):

(i174) No. 5 (+) — Chassis ground (−):

(i174) No. 6 (+) — Chassis ground (−):

Is there any voltage?

Repair or replace the short circuit of the harness.

Replace the A/C control panel. AIR CONDITIONER>Control Panel>REMOVAL

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B1438 MODE DOOR ACTUATOR CIRCUIT OPEN

DTC detecting condition:

Mode door actuator stepping motor circuit is open.

Trouble symptom:

Vent does not change.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector and mode door actuator connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1438 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK POWER SUPPLY FOR MODE DOOR ACTUATOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the mode door actuator connector.

3.

Turn the ignition switch to ON.

4.

Measure the voltage between the mode door actuator connector terminal and chassis ground.

Connector & terminal

(i176) No. 3 (+) — Chassis ground (−):

Is the voltage approx. 10 V or more?

3

Check the DC power supply circuit.

3. CHECK MODE DOOR ACTUATOR.
1.

Turn the ignition switch to OFF.

2.

Measure the internal resistance of the mode door actuator using a tester.

Connector & terminal

No. 3 — No. 1:

No. 3 — No. 2:

No. 3 — No. 5:

No. 3 — No. 6:

Is the resistance 80 — 100 Ω?

4

Replace the actuator. AIR CONDITIONER>Mode Door Actuator>REMOVAL

4. CHECK HARNESS BETWEEN A/C CONTROL PANEL AND MODE DOOR ACTUATOR (OPEN).
1.

Disconnect the A/C control panel connector.

2.

Measure the resistance between A/C control panel and air mix door actuator connector.

Connector & terminal

(i176) No. 1 — (i88) No. 4:

(i176) No. 2 — (i88) No. 3:

(i176) No. 5 — (i88) No. 2:

(i176) No. 6 — (i88) No. 1:

Is there continuity?

Replace the A/C control panel. AIR CONDITIONER>Control Panel>REMOVAL

Repair or replace the open circuit of harness.

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B1439 MODE DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT

DTC detecting condition:

Mode door actuator stepping motor circuit is shorted.

Trouble symptom:

Vent does not change.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector and mode door actuator connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1439 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK POWER SUPPLY FOR MODE DOOR ACTUATOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the mode door actuator connector.

3.

Turn the ignition switch to ON.

4.

Measure the voltage between the mode door actuator connector terminal and chassis ground.

Connector & terminal

(i176) No. 3 (+) — Chassis ground (−):

Is the voltage approx. 10 V or more?

3

Check the DC power supply circuit.

3. CHECK MODE DOOR ACTUATOR.
1.

Turn the ignition switch to OFF.

2.

Measure the internal resistance of the mode door actuator using a tester.

Connector & terminal

No. 3 — No. 1:

No. 3 — No. 2:

No. 3 — No. 5:

No. 3 — No. 6:

Is the resistance 80 — 100 Ω?

4

Replace the actuator. AIR CONDITIONER>Mode Door Actuator>REMOVAL

4. CHECK HARNESS BETWEEN A/C CONTROL PANEL AND MODE DOOR ACTUATOR (SHORTED TO POWER SUPPLY).
1.

Disconnect the A/C control panel connector.

2.

Measure the voltage between mode door actuator connector and chassis ground.

Connector & terminal

(i176) No. 1 (+) — Chassis ground (−):

(i176) No. 2 (+) — Chassis ground (−):

(i176) No. 5 (+) — Chassis ground (−):

(i176) No. 6 (+) — Chassis ground (−):

Is there any voltage?

Repair or replace the short circuit of the harness.

Replace the A/C control panel. AIR CONDITIONER>Control Panel>REMOVAL

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B1440 AIR MIX DOOR ACTUATOR CIRCUIT OPEN (DRIVER)

DTC detecting condition:

Air mix door actuator stepping motor circuit is open.

Trouble symptom:

Temperature cannot be adjusted.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector and air mix door actuator connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1440 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK POWER SUPPLY OF AIR MIX DOOR ACTUATOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the air mix door actuator connector.

3.

Turn the ignition switch to ON.

4.

Measure the voltage between the air mix door actuator connector terminal and chassis ground.

Connector & terminal

Without left/right independent air conditioning function

(i174) No. 3 (+) — Chassis ground (−):

With left/right independent air conditioning function

(i175) No. 3 (+) — Chassis ground (−):

Is the voltage approx. 10 V or more?

3

Check the DC power supply circuit.

3. CHECK AIR MIX DOOR ACTUATOR.
1.

Turn the ignition switch to OFF.

2.

Measure the internal resistance of the air mix door actuator using a tester.

Connector & terminal

Without left/right independent air conditioning function

Air mix door actuator

No. 3 — No. 1:

No. 3 — No. 2:

No. 3 — No. 5:

No. 3 — No. 6:

With left/right independent air conditioning function

Air mix door actuator LH

No. 3 — No. 1:

No. 3 — No. 2:

No. 3 — No. 5:

No. 3 — No. 6:

Is the resistance 80 — 100 Ω?

4

Replace the actuator. AIR CONDITIONER>Air Mix Door Actuator>REMOVAL

4. CHECK HARNESS BETWEEN A/C CONTROL PANEL AND AIR MIX DOOR ACTUATOR (OPEN).
1.

Disconnect the A/C control panel connector.

2.

Measure the resistance between A/C control panel and air mix door actuator connector.

Connector & terminal

Without left/right independent air conditioning function

(i174) No. 1 — (i88) No. 28:

(i174) No. 2 — (i88) No. 27:

(i174) No. 5 — (i88) No. 26:

(i174) No. 6 — (i88) No. 25:

With left/right independent air conditioning function

(i175) No. 1 — (i88) No. 24:

(i175) No. 2 — (i88) No. 23:

(i175) No. 5 — (i88) No. 22:

(i175) No. 6 — (i88) No. 21:

Is there continuity?

Replace the A/C control panel. AIR CONDITIONER>Control Panel>REMOVAL

Repair or replace the open circuit of harness.

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B1442 AIR MIX DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT (DRIVER)

DTC detecting condition:

Air mix door actuator stepping motor circuit is shorted.

Trouble symptom:

Temperature cannot be adjusted.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector and air mix door actuator connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1442 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK POWER SUPPLY OF AIR MIX DOOR ACTUATOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the air mix door actuator connector.

3.

Turn the ignition switch to ON.

4.

Measure the voltage between the air mix door actuator connector terminal and chassis ground.

Connector & terminal

Without left/right independent air conditioning function

(i174) No. 3 (+) — Chassis ground (−):

With left/right independent air conditioning function

(i175) No. 3 (+) — Chassis ground (−):

Is the voltage approx. 10 V or more?

3

Check the DC power supply circuit.

3. CHECK AIR MIX DOOR ACTUATOR.
1.

Turn the ignition switch to OFF.

2.

Measure the resistance between air mix door actuator terminals using a tester.

Connector & terminal

Without left/right independent air conditioning function

Air mix door actuator

No. 3 — No. 1:

No. 3 — No. 2:

No. 3 — No. 5:

No. 3 — No. 6:

With left/right independent air conditioning function

Air mix door actuator LH

No. 3 — No. 1:

No. 3 — No. 2:

No. 3 — No. 5:

No. 3 — No. 6:

Is the resistance 80 — 100 Ω?

4

Replace the actuator. AIR CONDITIONER>Air Mix Door Actuator>REMOVAL

4. CHECK HARNESS BETWEEN A/C CONTROL PANEL AND AIR MIX DOOR ACTUATOR (SHORTED TO POWER SUPPLY).
1.

Disconnect the A/C control panel connector.

2.

Measure the voltage between air mix door actuator connector and chassis ground.

Connector & terminal

Without left/right independent air conditioning function

(i174) No. 1 (+) — Chassis ground (−):

(i174) No. 2 (+) — Chassis ground (−):

(i174) No. 5 (+) — Chassis ground (−):

(i174) No. 6 (+) — Chassis ground (−):

With left/right independent air conditioning function

(i175) No. 1 (+) — Chassis ground (−):

(i175) No. 2 (+) — Chassis ground (−):

(i175) No. 5 (+) — Chassis ground (−):

(i175) No. 6 (+) — Chassis ground (−):

Is there any voltage?

Repair or replace the short circuit of the harness.

Replace the A/C control panel. AIR CONDITIONER>Control Panel>REMOVAL

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14A1 SUNLOAD SENSOR CIRCUIT LOW/OPEN

DTC detecting condition:

Open circuit in the sunload sensor is detected for 4 seconds or more. (Displayed for current malfunction)

Trouble symptom:

Operation is performed as no sunload.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

When the sunload sensor check is performed indoors or in the shade, it could be diagnosed as having an open circuit. Always check the sunload sensor in direct sunlight.

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector and sunload sensor connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14A1 displayed?

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK SUNLOAD SENSOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the sunload sensor.

3.

Short the connector.

4.

Turn the ignition switch to ON.

5.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14A2 displayed?

Replace the sunload sensor. AIR CONDITIONER>Sunload Sensor (Auto A/C Model)>REMOVAL

3

3. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Restore the temporary shorted lines made in step 2.

3.

Turn the ignition switch to ON.

4.

Using a tester, measure the voltage between terminals in sunload sensor connector.

Connector & terminal

(i51) No. 2 (+) — (i51) No. 1 (−):

Is the voltage 4.5 — 5.0 V?

4

Repair or replace the open circuit of harness.

4. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector from the A/C control panel.

3.

Using a tester, check the continuity between sunload sensor and A/C control panel connector terminals.

Connector & terminal

(i51) No. 1 — (i88) No. 14:

(i51) No. 2 — (i88) No. 16:

Is there continuity?

Replace the A/C control panel. AIR CONDITIONER>Control Panel

Repair or replace the open circuit of harness.

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14A2 SUNLOAD SENSOR CIRCUIT SHORT-CIRCUIT

DTC detecting condition:

Short circuit in the sunload sensor is detected for 4 seconds or more.

Trouble symptom:

Operation is performed as no sunload.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

When the sunload sensor check is performed indoors or in the shade, it could be diagnosed as having an open circuit. Always check the sunload sensor in direct sunlight.

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector and sunload sensor connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14A2 displayed?

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK SUNLOAD SENSOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the sunload sensor.

3.

Turn the ignition switch to ON.

4.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14A1 displayed?

Replace the sunload sensor. AIR CONDITIONER>Sunload Sensor (Auto A/C Model)>REMOVAL

3

3. CHECK HARNESS.
1.

Turn the ignition switch to ON.

2.

Using a tester, measure the voltage between terminals in sunload sensor connector.

Connector & terminal

(i51) No. 2 (+) — (i51) No. 1 (−):

Is the voltage 4.5 — 5.0 V?

Check the connection of the sunload sensor circuit.

4

4. CHECK HARNESS (SHORTED BETWEEN LINES).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector from the A/C control panel.

3.

Using a tester, check the continuity between terminals in sunload sensor connector.

Connector & terminal

(i51) No. 1 — (i51) No. 2:

Is there continuity?

Repair or replace the short circuit of the harness.

Replace the A/C control panel. AIR CONDITIONER>Control Panel

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14A3 REFRIGERANT PRESSURE SENSOR CIRCUIT OPEN

DTC detecting condition:

Pressure sensor (PH) circuit is open.

Trouble symptom:

Compressor does not operate. (Variable compressor)

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector, pressure sensor (PH) connector and coupling connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14A3 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK PRESSURE SENSOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the pressure sensor (PH).

3.

Short No. 2 and No. 3 of connector B627.

4.

Turn the ignition switch to ON.

5.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14A4 displayed? (Current malfunction)

Replace the pressure sensor (PH). AIR CONDITIONER>Pressure Sensor

3

3. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Restore the temporary shorted lines made in step 2.

3.

Turn the ignition switch to ON.

4.

Using a tester, measure the voltage between terminals in pressure sensor (PH) connector.

Connector & terminal

(B627) No. 1 (+) — (B627) No. 3 (−):

Is the voltage 4.5 — 5.0 V?

4

Repair or replace the open circuit of harness.

4. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector from the A/C control panel.

3.

Using a tester, check the continuity between A/C control panel connector and pressure sensor (PH) connector terminals.

Connector & terminal

(B627) No. 1 — (i88) No. 10:

(B627) No. 2 — (i88) No. 38:

(B627) No. 3 — (i88) No. 14:

Is there continuity?

Replace the A/C control panel. AIR CONDITIONER>Control Panel

Repair or replace the open circuit of harness.

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14A4 REFRIGERANT PRESSURE SENSOR CIRCUIT SHORT-CIRCUIT

DTC detecting condition:

Pressure sensor (PH) circuit is shorted.

Trouble symptom:

Compressor does not operate. (Variable compressor)

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector, pressure sensor (PH) connector and coupling connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14A4 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK PRESSURE SENSOR (PH).
1.

Turn the ignition switch to OFF.

2.

Disconnect the pressure sensor (PH).

3.

Turn the ignition switch to ON.

4.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14A3 displayed? (Current malfunction)

Replace the pressure sensor (PH). AIR CONDITIONER>Pressure Sensor

3

3. CHECK HARNESS (SHORTED BETWEEN LINES AND SHORTED TO GROUND).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector from the A/C control panel.

3.

Using a tester, check the continuity between the terminals in pressure sensor (PH) connector and between pressure sensor (PH) connector and chassis ground.

Connector & terminal

(B627) No. 2 — (B627) No. 3:

(B627) No. 1 — Chassis ground:

Is there continuity?

Repair or replace the short circuit of the harness.

Replace the A/C control panel. AIR CONDITIONER>Control Panel

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14A7 VARIABLE SOLENOID VALVE CIRCUIT

DTC detecting condition:

Variable flow change solenoid valve circuit is open or shorted.

Trouble symptom:

Refrigerant pressure cannot be changed.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector and variable flow change solenoid connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14A7 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. ACTIVE TEST.
1.

Turn the ignition switch to OFF.

2.

Attach the manifold gauge.

3.

Turn the ignition switch to ON.

4.

Using the Subaru Select Monitor, check the following items in the [Active Test] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Active Test

- Variable Flow Change Sol Duty Setting

Did the variable flow change solenoid operate to the specified target, and the pressure change?

Variable flow change solenoid circuit is normal.

3

3. CHECK VARIABLE FLOW CHANGE SOLENOID.
1.

Turn the ignition switch to OFF.

2.

Disconnect the variable flow change solenoid connector.

3.

Using a tester, measure the resistance between terminals of the solenoid.

Terminals

(Compressor solenoid side) No. 1 — No. 2:

Is the resistance 10 — 12 Ω?

4

Replace the compressor. AIR CONDITIONER>Compressor

4. CHECK HARNESS (OPEN CIRCUIT).
1.

Disconnect the A/C control panel connector.

2.

Using a tester, check for continuity between the harness terminals.

Connector & terminal

(F160) No. 1 — (i88) No. 36:

(F160) No. 2 — Chassis ground:

Is there continuity?

5

Repair or replace the open circuit of harness.

5. CHECK HARNESS (SHORTED BETWEEN LINES AND SHORTED TO GROUND).

Using a tester, check for continuity between the harness terminals.

Connector & terminal

(F160) No. 1 — Chassis ground:

(F160) No. 1 — (F160) No. 2:

Is there continuity?

Repair or replace the short circuit of the harness.

Replace the A/C control panel. AIR CONDITIONER>Control Panel

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14A8 COMPRESSOR BREAK-IN MALFUNCTION LOW REFRIGERANT

DTC detecting condition:

- Compressor was operated while refrigerant was low.

- Compressor was operated while refrigerant pressure was extremely low.

- Judgment is made only when the delivery mode fuse is installed.

Trouble symptom:

A/C does not operate.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK AMOUNT OF REFRIGERANT.

Check the refrigerant pressure and filling amount. AIR CONDITIONER>Refrigerant Pressure with Manifold Gauge Set

Is the filling amount a standard value?

Check that DTC B14A3 (open circuit malfunction) or B14A4 (short circuit malfunction) is recorded, and if either one of these DTCs is recorded, perform the diagnosis according to the DTC. If nothing is recorded, replace the compressor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14A3 REFRIGERANT PRESSURE SENSOR CIRCUIT OPEN AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14A4 REFRIGERANT PRESSURE SENSOR CIRCUIT SHORT-CIRCUIT AIR CONDITIONER>Compressor

Replace the compressor. AIR CONDITIONER>Compressor

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14E7 HEATER CORE SENSOR CIRCUIT OPEN

DTC detecting condition:

Heater core sensor circuit is open.

Trouble symptom:

Proper outlet air temperature cannot be kept during Auto Start Stop.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector and heater core sensor connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14E7 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK HEATER CORE SENSOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the heater core sensor. AIR CONDITIONER>Heater Core Sensor>REMOVAL

3.

Short the heater core sensor connector (i293).

4.

Turn the ignition switch to ON.

5.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14E8 displayed? (Current malfunction)

Replace the heater core sensor. AIR CONDITIONER>Heater Core Sensor>REMOVAL

3

3. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Restore the temporary shorted lines made in step 2.

3.

Turn the ignition switch to ON.

4.

Using the tester, measure the voltage between terminals.

Connector & terminal

(i293) No. 2 (+) — (i293) No. 1 (−):

Is the voltage 4.5 — 5.0 V?

4

Repair or replace the open circuit of harness.

4. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector from the A/C control panel.

3.

Using a tester, check continuity between terminals.

Connector & terminal

(i293) No. 1 — (i88) No. 14:

(i293) No. 2 — (i88) No. 39:

Is there continuity?

Replace the A/C control panel. AIR CONDITIONER>Control Panel>REMOVAL

Repair or replace the open circuit of harness.

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14E8 HEATER CORE SENSOR CIRCUIT SHORT-CIRCUIT

DTC detecting condition:

Heater core sensor circuit is shorted.

Trouble symptom:

Proper outlet air temperature cannot be kept during Auto Start Stop.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector and heater core sensor connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14E8 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK HEATER CORE SENSOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the heater core sensor. AIR CONDITIONER>Heater Core Sensor>REMOVAL

3.

Turn the ignition switch to ON.

4.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14E7 displayed? (Current malfunction)

Replace the heater core sensor. AIR CONDITIONER>Heater Core Sensor>REMOVAL

3

3. CHECK HARNESS.
1.

Turn the ignition switch to ON.

2.

Using the tester, measure the voltage between terminals.

Connector & terminal

(i293) No. 2 (+) — (i293) No. 1 (−):

Is the voltage 4.5 — 5.0 V?

Check the connection of the heater core sensor circuit.

4

4. CHECK HARNESS (SHORTED BETWEEN LINES).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector from the A/C control panel.

3.

Using a tester, check continuity between terminals.

Connector & terminal

(i293) No. 1 — (i293) No. 2:

Is there continuity?

Repair or replace the short circuit of the harness.

Replace the A/C control panel. AIR CONDITIONER>Control Panel>REMOVAL

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14E9 INTAKE DOOR ACTUATOR CIRCUIT OPEN

DTC detecting condition:

Intake door actuator potentiometer circuit is open.

Trouble symptom:

FRESH/RECIRC does not operate.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel and intake door actuator connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14E9 displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK HARNESS.
1.

Turn the ignition switch to ON.

2.

Measure the voltage between intake door actuator connector terminals using a tester.

Connector & terminal

(i294) No. 6 (+) — (i294) No. 4 (−):

Is the voltage 4.5 — 5.0 V?

3

Repair or replace the open circuit of harness.

3. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Using a tester, check the continuity between A/C control panel connector and intake door actuator connector.

Connector & terminal

(i294) No. 1 — (i88) No. 6:

(i294) No. 2 — (i88) No. 8:

(i294) No. 4 — (i88) No. 14:

(i294) No. 5 — (i88) No. 12:

(i294) No. 6 — (i88) No. 10:

Is there continuity?

4

Repair or replace the open circuit of harness.

4. CHECK ACTUATOR.
1.

Turn the ignition switch to ON.

2.

Measure the voltage between intake door actuator connector terminals using a tester.

Connector & terminal

(i294) No. 5 (+) — (i294) No. 4 (−):

Is the voltage 0.5 — 4.5 V?

Replace the A/C control panel. AIR CONDITIONER>Control Panel>REMOVAL

5

5. CHECK HARNESS (SHORTED BETWEEN LINES).
1.

Turn the ignition switch to OFF.

2.

Measure the resistance between intake door actuator connector terminals using a tester.

Connector & terminal

(i294) No. 5 — (i294) No. 6:

Is the resistance less than 1 Ω?

Repair or replace the short circuit of the harness.

Replace the actuator. AIR CONDITIONER>FRESH/RECIRC Door Actuator>REMOVAL

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14EA INTAKE DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT

DTC detecting condition:

Intake door actuator potentiometer circuit is shorted.

Trouble symptom:

FRESH/RECIRC does not operate.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel and intake door actuator connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14EA displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK HARNESS.
1.

Turn the ignition switch to ON.

2.

Measure the voltage between intake door actuator connector terminals using a tester.

Connector & terminal

(i294) No. 6 (+) — (i294) No. 4 (−):

Is the voltage 4.5 — 5.0 V?

3

Repair or replace the open circuit of harness.

3. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Check the continuity between terminals in intake door actuator connector using a tester.

Connector & terminal

(i294) No. 1 — (i88) No. 6:

(i294) No. 2 — (i88) No. 8:

(i294) No. 4 — (i88) No. 14:

(i294) No. 5 — (i88) No. 12:

(i294) No. 6 — (i88) No. 10:

Is there continuity?

4

Repair or replace the open circuit of harness.

4. CHECK ACTUATOR.
1.

Turn the ignition switch to ON.

2.

Measure the voltage between intake door actuator connector terminals using a tester.

Connector & terminal

(i294) No. 5 (+) — (i294) No. 4 (−):

Is the voltage 0.5 — 4.5 V?

Replace the A/C control panel. AIR CONDITIONER>Control Panel>REMOVAL

5

5. CHECK HARNESS (SHORTED BETWEEN LINES).
1.

Turn the ignition switch to OFF.

2.

Measure the resistance between intake door actuator connector terminals using a tester.

Connector & terminal

(i294) No. 5 — (i294) No. 4:

Is the resistance less than 1 Ω?

Repair or replace the short circuit of the harness.

Replace the actuator. AIR CONDITIONER>FRESH/RECIRC Door Actuator>REMOVAL

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14EB INTAKE DOOR ACTUATOR STUCK

DTC detecting condition:

- Intake door actuator is locked.

- The potentiometer value of the actuator does not change.

Trouble symptom:

FRESH/RECIRC does not operate.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel and intake door actuator connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14EB displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK SYSTEM OPERATION.

Using the Subaru Select Monitor, check the following items in the [Active Test] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Active Test

- Fresh/Rec Air Dr Act Trgt Open Angle

Did the actuator move to the specified target opening angle?

Intake door actuator circuit is normal.

3

3. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to ON.

2.

Measure the voltage between intake door actuator connector terminals using a tester.

Connector & terminal

(i294) No. 6 (+) — (i294) No. 4 (−):

Is the voltage 4.5 — 5.0 V?

4

Repair or replace the open circuit of harness.

4. CHECK HARNESS (OPEN CIRCUIT).
1.

Disconnect the connector from the A/C control panel.

2.

Using a tester, check the continuity between A/C control panel connector and intake door actuator connector.

Connector & terminal

(i294) No. 1 — (i88) No. 6:

(i294) No. 2 — (i88) No. 8:

(i294) No. 4 — (i88) No. 14:

(i294) No. 5 — (i88) No. 12:

(i294) No. 6 — (i88) No. 10:

Is there continuity?

5

Repair or replace the open circuit of harness.

5. CHECK INTAKE DOOR ACTUATOR.

Check the intake door actuator parts.

Is the actuator normal?

Replace the A/C control panel. AIR CONDITIONER>Control Panel>REMOVAL

Replace the actuator. AIR CONDITIONER>FRESH/RECIRC Door Actuator>REMOVAL

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14EC HUMIDITY SENSOR CIRCUIT OPEN

DTC detecting condition:

Temperature and humidity sensor circuit is open.

Trouble symptom:

Proper outlet air temperature cannot be kept.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector and the temperature and humidity sensor connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14EC displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK TEMPERATURE AND HUMIDITY SENSOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the temperature and humidity sensor.

3.

Short the connector (i173).

4.

Turn the ignition switch to ON.

5.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14ED displayed? (Current malfunction)

Replace the temperature and humidity sensor. AIR CONDITIONER>Temperature and Humidity Sensor

3

3. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Restore the temporary shorted lines made in step 2.

3.

Turn the ignition switch to ON.

4.

Using a tester, measure the voltage between terminals in temperature and humidity sensor connector.

Connector & terminal

(i173) No. 3 (+) — (i173) No. 2 (−):

Is the voltage 4.5 — 5.0 V?

4

Repair or replace the open circuit of harness.

4. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector from the A/C control panel.

3.

Using a tester, check the continuity between the A/C control panel connector and temperature and humidity sensor connector.

Connector & terminal

(i173) No. 2 — (i88) No. 14:

(i173) No. 3 — (i88) No. 33:

Is there continuity?

Replace the A/C control panel. AIR CONDITIONER>Control Panel

Repair or replace the open circuit of harness.

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14ED HUMIDITY SENSOR CIRCUIT SHORT

DTC detecting condition:

Temperature and humidity sensor circuit is shorted.

Trouble symptom:

Proper outlet air temperature cannot be kept.

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel and the temperature and humidity sensor connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14ED displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK TEMPERATURE AND HUMIDITY SENSOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the temperature and humidity sensor. AIR CONDITIONER>Temperature and Humidity Sensor

3.

Turn the ignition switch to ON.

4.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14EC displayed? (Current malfunction)

Replace the temperature and humidity sensor. AIR CONDITIONER>Temperature and Humidity Sensor

3

3. CHECK HARNESS.
1.

Turn the ignition switch to ON.

2.

Using a tester, measure the voltage between terminals in temperature and humidity sensor connector.

Connector & terminal

(i173) No. 3 (+) — (i173) No. 2 (−):

Is the voltage 4.5 — 5.0 V?

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

4

4. CHECK HARNESS (SHORTED BETWEEN LINES).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector from the A/C control panel.

3.

Using a tester, check the continuity between terminals in temperature and humidity sensor connector.

Connector & terminal

(i173) No. 3 — (i173) No. 2:

Is there continuity?

Repair or replace the short circuit of the harness.

Replace the A/C control panel. AIR CONDITIONER>Control Panel

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14EE REFRIGERANT PRESSURE SENSOR CIRCUIT OPEN (HOSE PRESSURE DISCHARGE)

DTC detecting condition:

Pressure sensor (PD) circuit is open.

Trouble symptom:

Compressor does not operate. (Variable compressor)

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector, pressure sensor (PD) connector and coupling connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14EE displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK PRESSURE SENSOR.
1.

Turn the ignition switch to OFF.

2.

Disconnect the pressure sensor (PD).

3.

Short No. 2 and No. 3 of connector B626.

4.

Turn the ignition switch to ON.

5.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14EF displayed? (Current malfunction)

Replace the pressure sensor (PD). AIR CONDITIONER>Pressure Sensor

3

3. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Restore the temporary shorted lines made in step 2.

3.

Turn the ignition switch to ON.

4.

Using a tester, measure the voltage between terminals in pressure sensor (PD) connector.

Connector & terminal

(B626) No. 1 (+) — (B627) No. 3 (−):

Is the voltage 4.5 — 5.0 V?

4

Repair or replace the open circuit of harness.

4. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector from the A/C control panel.

3.

Using a tester, check the continuity between A/C control panel connector and pressure sensor (PD) connector terminals.

Connector & terminal

(B626) No. 1 — (i88) No. 10:

(B626) No. 2 — (i88) No. 13:

(B626) No. 3 — (i88) No. 14:

Is there continuity?

Replace the A/C control panel. AIR CONDITIONER>Control Panel

Repair or replace the open circuit of harness.

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14EF REFRIGERANT PRESSURE SENSOR CIRCUIT SHORT-CIRCUIT (HOSE PRESSURE DISCHARGE)

DTC detecting condition:

Pressure sensor (PD) circuit is shorted.

Trouble symptom:

Compressor does not operate. (Variable compressor)

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK CONNECTOR.
1.

Check connecting condition of the A/C control panel connector, pressure sensor (PD) connector and coupling connector.

2.

Turn the ignition switch to ON.

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14EF displayed? (Current malfunction)

2

- Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2. CHECK PRESSURE SENSOR (PD).
1.

Turn the ignition switch to OFF.

2.

Disconnect the pressure sensor (PD).

3.

Turn the ignition switch to ON.

4.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14EE displayed? (Current malfunction)

Replace the pressure sensor (PD). AIR CONDITIONER>Pressure Sensor

3

3. CHECK HARNESS (SHORTED BETWEEN LINES AND SHORTED TO GROUND).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector from the A/C control panel.

3.

Using a tester, check the continuity between the terminals in pressure sensor (PD) connector and between pressure sensor (PD) connector and chassis ground.

Connector & terminal

(B626) No. 2 — (B626) No. 3:

(B626) No. 1 — Chassis ground:

Is there continuity?

Repair or replace the short circuit of the harness.

Replace the A/C control panel. AIR CONDITIONER>Control Panel

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0073 CONTROL MODULE COMMUNICATION BUS OFF

Detected when malfunction occurs in CAN line. (Bus off)

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0100 LOST COMMUNICATION WITH ECM/PCM "A"

No CAN data is received from ECM.

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE

No CAN data is received from VDC CM.

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0140 LOST COMMUNICATION WITH BODY CONTROL MODULE

No CAN data is received from body integrated unit.

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0151 LOST COMMUNICATION WITH RESTRAINTS CONTROL MODULE

No CAN data is received from airbag CM.

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE

No CAN data is received from combination meter.

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0156 LOST COMMUNICATION WITH INFORMATION CENTER "A"

CAN data does not arrive from MFD.

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0401 INVALID DATA RECEIVED FROM ECM/PCM "A"

Received error CAN data from ECM.

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0416 INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE

Received error CAN data from VDC CM.

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0422 INVALID DATA RECEIVED FROM BODY CONTROL MODULE

Error CAN data is received from body integrated unit.

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE

Received error CAN data from combination meter.

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0452 INVALID DATA RECEIVED FROM RESTRAINTS CONTROL MODULE

Error CAN data is received from airbag CM.

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0457 INVALID DATA RECEIVED FROM INFORMATION CENTER "A"

Received error CAN data from MFD.

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U1120 LOST COMMUNICATION WITH AUTOSTART STOP CONTROL MODULE

Detected when CAN data for Auto Start Stop is not transmitted from TCM to stereo camera.

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U123A LOST COMMUNICATION WITH DRIVER MONITORING SYSTEM

CAN data does not arrive from driver monitoring unit.

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U143A INVALID DATA RECEIVED FROM DRIVER MONITORING SYSTEM

Received error CAN data from driver monitoring unit.

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U1469 INVALID DATA RECEIVED FROM AUTOSTART STOP CONTROL MODULE

Failure counter diagnosis of Auto Start Stop transmitted from TCM

Perform the diagnosis for LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

AIR CONDITIONER(DIAGNOSTICS) > Diagnostics with Phenomenon
LIST

1. Perform diagnosis according to the diagnosis procedure for the corresponding symptom listed in the symptom table.

2. If there are multiple symptoms, perform the diagnosis in the symptom sequence (1 → 2 → ... → 13).

1. SYMPTOM TABLE

Symptoms | Diagnosis procedure
1 | Nothing is displayed on the screen or indicators do not illuminate. | AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > NOTHING IS DISPLAYED ON THE SCREEN OR INDICATORS DO NOT ILLUMINATE
2 | Air conditioner does not stop even when the OFF switch is pressed. | AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > AIR CONDITIONER DOES NOT STOP EVEN WHEN THE OFF SWITCH IS PRESSED
3 | The windshield glass is not cleared even when the DEF switch is pressed. | AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > THE WINDSHIELD GLASS IS NOT CLEARED EVEN WHEN THE DEF SWITCH IS PRESSED
4 | Cold air not emitted. | AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > COLD AIR NOT EMITTED
5 | Warm air not emitted. | AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > WARM AIR NOT EMITTED
6 | Compartment temperature is excessively lower than setting temperature. | AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > COMPARTMENT TEMPERATURE IS EXCESSIVELY LOWER THAN SETTING TEMPERATURE
7 | Compartment temperature is excessively higher than setting temperature. | AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > COMPARTMENT TEMPERATURE IS EXCESSIVELY HIGHER THAN SETTING TEMPERATURE
8 | Air does not come out, or airflow capacity is insufficient. (Blower motor does not rotate.) | AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > AIR DOES NOT COME OUT, OR AIRFLOW CAPACITY IS INSUFFICIENT
9 | Air goes out of control. (Blower motor rotates at high speed.) | AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > AIR GOES OUT OF CONTROL
10 | Cold air does not come out even when the A/C switch is pressed. The glass cannot be defogged. (Compressor does not operate.) | AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > COLD AIR DOES NOT COME OUT EVEN WHEN THE A/C SWITCH IS PRESSED. THE GLASS CANNOT BE DEFOGGED. (COMPRESSOR DOES NOT OPERATE.)
11 | Unable to switch suction vents. | AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > UNABLE TO SWITCH SUCTION VENTS
12 | Unable to switch blow vents. | AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > UNABLE TO SWITCH VENTS
13 | Illumination does not come on, or cannot dim. | AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > ILLUMINATION DOES NOT COME ON OR CANNOT DIM

AIR CONDITIONER(DIAGNOSTICS) > Diagnostics with Phenomenon
INSPECTION
1. NOTHING IS DISPLAYED ON THE SCREEN OR INDICATORS DO NOT ILLUMINATE

Trouble symptom:

- When the AUTO button is pressed with IGN ON, nothing is displayed on the screen or indicators do not illuminate.

Trouble causes:

- A/C control panel power supply circuit failure

- CAN communication failure

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK FUSE.
no

Perform the instructed procedures.

yes
2. CHECK CONNECTOR.
no

Perform the instructed procedures.

yes
3. CHECK A/C CONTROL PANEL POWER SUPPLY CIRCUIT (OPEN OR SHORT).
no

Perform the instructed procedures.

yes
4. CHECK A/C CONTROL PANEL GROUND CIRCUIT (OPEN).
no

Perform the instructed procedures.

yes
5. CHECK FOR POOR CONTACT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK FUSE.
1.

Turn the ignition switch to OFF.

2.

Remove the fuses No. 21, 24 and 25 from fuse & relay box.

3.

Check the condition of fuse.

Is the check result OK?

2

Replace the fuse. If the replaced fuse blows out easily, repair the ground short circuit in harness between the fuse — A/C control panel.

2. CHECK CONNECTOR.

Check poor contact of A/C control panel connector and coupling connector.

Is the check result OK?

3

Repair the connector.

3. CHECK A/C CONTROL PANEL POWER SUPPLY CIRCUIT (OPEN OR SHORT).
1.

Remove the A/C control panel.

2.

Disconnect the A/C control panel connector.

3.

Measure the voltage between A/C control panel connector terminal and chassis ground after turning the ignition switch to ON.

Connector & terminal

(i88) No. 15 (+) — Chassis ground (−):

(i88) No. 31 (+) — Chassis ground (−):

(i88) No. 32 (+) — Chassis ground (−):

Is the voltage 10 V or more?

4

Check for open or short circuit in the harness between A/C control panel and fuse.

4. CHECK A/C CONTROL PANEL GROUND CIRCUIT (OPEN).

Measure the resistance of harness between A/C control panel and chassis ground after turning the ignition switch to OFF.

Connector & terminal

(i88) No. 34 — Chassis ground:

Is the resistance less than 10 Ω?

5

Repair the harness for ground line.

5. CHECK FOR POOR CONTACT.

Check poor contact of A/C control panel connector.

Is the check result OK?

Replace the A/C control panel. AIR CONDITIONER>Control Panel

Repair the connector.

2. AIR CONDITIONER DOES NOT STOP EVEN WHEN THE OFF SWITCH IS PRESSED

Trouble symptom:

Even when the OFF switch is pressed, the blower fan and the compressor do not turn off.

Trouble causes:

- CAN communication failure

- A/C control panel failure

- Blower motor failure

- Compressor failure

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
2. CHECK BLOWER MOTOR.
no

Perform the instructed procedures.

yes
3. CHECK COMPRESSOR.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK A/C CONTROL PANEL.
1.

Turn the ignition switch to ON.

2.

Press the OFF switch of the A/C control panel.

3.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Blower Fan Level

- Variable Flow Change Solenoid Duty

Does [Blower Fan Level] indicate 0, and [Variable Flow Change Solenoid Duty] indicate 0%?

2

Replace the A/C control panel. AIR CONDITIONER>Control Panel

2. CHECK BLOWER MOTOR.

With the OFF switch pressed, check the blower motor operation.

Is the blower motor stopped?

3

AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > AIR GOES OUT OF CONTROL

3. CHECK COMPRESSOR.

With the OFF switch pressed, check the compressor operation.

Is the compressor stopped?

- The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > COLD AIR DOES NOT COME OUT EVEN WHEN THE A/C SWITCH IS PRESSED. THE GLASS CANNOT BE DEFOGGED. (COMPRESSOR DOES NOT OPERATE.)

3. THE WINDSHIELD GLASS IS NOT CLEARED EVEN WHEN THE DEF SWITCH IS PRESSED

Trouble symptom:

Defroster indicator does not illuminate, outlet opening does not switch to DEF, compressor does not switch to ON, and inlet opening does not switch to FRESH, when pressing the DEF switch.

Trouble causes:

- CAN communication failure

- A/C control panel failure

- Mode door actuator failure

- Compressor failure

- Intake door actuator failure

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
2. CHECK MODE DOOR ACTUATOR.
no

Perform the instructed procedures.

yes
3. CHECK INTAKE DOOR ACTUATOR.
no

Perform the instructed procedures.

yes
4. CHECK COMPRESSOR.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK A/C CONTROL PANEL.
1.

Turn the ignition switch to ON.

2.

Press the DEF switch of the A/C control panel.

3.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Mode Door Actuator Position Target

- Variable Flow Change Solenoid Duty

- Fresh/Recircle Air Door Actuator Position Target

Does [Mode Door Actuator Position Target] indicate 100%, [Variable Flow Change Solenoid Duty] indicate 0% or more, and [Fresh/Recircle Air Door Actuator Position Target] indicate 100%?

2

Replace the A/C control panel. AIR CONDITIONER>Control Panel

2. CHECK MODE DOOR ACTUATOR.

With the DEF switch ON, check the mode door operation.

Does the air come out from the DEF outlet opening?

3

AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > UNABLE TO SWITCH VENTS

3. CHECK INTAKE DOOR ACTUATOR.

With the DEF switch ON, check the FRESH/RECIRC door operation.

Is FRESH/RECIRC switch turned to “FRESH”?

4

AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > UNABLE TO SWITCH SUCTION VENTS

4. CHECK COMPRESSOR.

With the DEF switch ON, check the compressor operation.

Does the compressor operate?

- The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > COLD AIR DOES NOT COME OUT EVEN WHEN THE A/C SWITCH IS PRESSED. THE GLASS CANNOT BE DEFOGGED. (COMPRESSOR DOES NOT OPERATE.)

4. COLD AIR NOT EMITTED

Trouble symptom:

Cold air not emitted.

Trouble causes:

- Airflow capacity failure

- Refrigerant pressure failure

- CAN communication failure

- A/C control panel failure

- Air mix actuator RH failure

- Air mix actuator LH failure (only with left/right independent air conditioning function)

- Intake door actuator failure

- Evaporator sensor failure

- In-vehicle sensor failure

- Ambient sensor failure

- Sunload sensor failure

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK MAX COOL.
no

4

yes
2. CHECK AIRFLOW CAPACITY.
no

Perform the instructed procedures.

yes
3. CHECK AMOUNT OF REFRIGERANT PRESSURE.
no

Perform the instructed procedures.

yes
4. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
5. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
6. CHECK DTC.
yes

Perform the instructed procedures.

no

7

7. CHECK DTC.
yes

Perform the instructed procedures.

no

8

8. CHECK INTAKE DOOR ACTUATOR.
no

Perform the instructed procedures.

yes
9. CHECK EVAPORATOR SENSOR UNIT.
no

Perform the instructed procedures.

yes
10. CHECK IN-VEHICLE SENSOR UNIT.
no

Perform the instructed procedures.

yes
11. CHECK AMBIENT SENSOR UNIT.
no

Perform the instructed procedures.

yes
12. CHECK SUNLOAD SENSOR UNIT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK MAX COOL.

Set the A/C control panel dials as follows.

Temperature control dial: MAX COOL

FRESH/RECIRC switch: RECIRC

Mode switch or mode dial: VENT

A/C switch: ON

Does it fail to blow the cold air?

2

4

2. CHECK AIRFLOW CAPACITY.

Check the airflow capacity. AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > AIR DOES NOT COME OUT, OR AIRFLOW CAPACITY IS INSUFFICIENT

Is the check result OK?

3

Perform repair according to inspection procedure.

3. CHECK AMOUNT OF REFRIGERANT PRESSURE.

Check the refrigerant pressure. AIR CONDITIONER>Refrigerant Pressure with Manifold Gauge Set

Is the check result OK?

4

Perform repair according to refrigerant pressure inspection.

4. CHECK A/C CONTROL PANEL.
1.

Turn the ignition switch to ON.

2.

Turn the temperature control dials (driver’s side) and (passenger’s side) to MAX COOL.

3.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Heater Control Panel Setting Value (Driver's)

- Heater Control Panel Setting Value (Passenger's)

Do [Heater Control Panel Setting Value (Driver's)] and [Heater Control Panel Setting Value (Passenger's)] indicate “60”∗1?

(∗1: For the 72°F center specification. For the 25°C center specification, the value is 18)

5

Replace the A/C control panel. AIR CONDITIONER>Control Panel

5. CHECK A/C CONTROL PANEL.
1.

Turn the temperature control dials (driver’s side) and (passenger’s side) to MAX HOT.

2.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Heater Control Panel Setting Value (Driver's)

- Heater Control Panel Setting Value (Passenger's)

Do [Heater Control Panel Setting Value (Driver's)] and [Heater Control Panel Setting Value (Passenger's)] indicate “85”∗2?

(∗2: For the 72°F center specification. For the 25°C center specification, the value is 32)

6

Replace the A/C control panel. AIR CONDITIONER>Control Panel

6. CHECK DTC.
1.

Turn the ignition switch to ON.

2.

Turn the temperature control dial at MAX COOL and leave for 16 seconds or more. (For vehicles with left/right independent air conditioner, perform setting on both sides.)

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is any of DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A displayed? (Current malfunction)

Perform the diagnosis for the displayed DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A.

7

7. CHECK DTC.
1.

Turn the ignition switch to ON.

2.

Turn the temperature control dial at MAX HOT and leave for 16 seconds or more. (For vehicles with left/right independent air conditioner, perform setting on both sides.)

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is any of DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A displayed? (Current malfunction)

Perform the diagnosis for the displayed DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A.

8

8. CHECK INTAKE DOOR ACTUATOR.

Visually check the intake door actuator operation.

Is the check result OK?

9

Check the intake door actuator. AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > UNABLE TO SWITCH SUCTION VENTS

9. CHECK EVAPORATOR SENSOR UNIT.

Perform the inspection of evaporator sensor unit. AIR CONDITIONER>Evaporator Sensor

Is the check result OK?

10

Replace the evaporator sensor. AIR CONDITIONER>Evaporator Sensor

10. CHECK IN-VEHICLE SENSOR UNIT.

Check in-vehicle sensor. AIR CONDITIONER>Temperature and Humidity Sensor

Is the check result OK?

11

Replace the in-vehicle sensor. AIR CONDITIONER>Temperature and Humidity Sensor

11. CHECK AMBIENT SENSOR UNIT.

Check the ambient sensor. AIR CONDITIONER>Ambient Sensor

Is the check result OK?

12

Replace the ambient sensor. AIR CONDITIONER>Ambient Sensor

12. CHECK SUNLOAD SENSOR UNIT.

Check the sunload sensor unit. AIR CONDITIONER>Sunload Sensor (Auto A/C Model)

Is the check result OK?

- The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

Replace the sunload sensor. AIR CONDITIONER>Sunload Sensor (Auto A/C Model)

5. WARM AIR NOT EMITTED

Trouble symptom:

Warm air not emitted.

Trouble causes:

- Airflow capacity failure

- Coolant level failure

- CAN communication failure

- A/C control panel failure

- Air mix actuator RH failure

- Air mix actuator LH failure (only with left/right independent air conditioning function)

- Intake door actuator failure

- Evaporator sensor failure

- In-vehicle sensor failure

- Ambient sensor failure

- Sunload sensor failure

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK MAX HOT.
no

4

yes
2. CHECK AIRFLOW CAPACITY.
no

Perform the instructed procedures.

yes
3. CHECK ENGINE COOLANT.
no

Perform the instructed procedures.

yes
4. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
5. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
6. CHECK DTC.
yes

Perform the instructed procedures.

no

7

7. CHECK DTC.
yes

Perform the instructed procedures.

no

8

8. CHECK INTAKE DOOR ACTUATOR.
no

Perform the instructed procedures.

yes
9. CHECK EVAPORATOR SENSOR UNIT.
no

Perform the instructed procedures.

yes
10. CHECK IN-VEHICLE SENSOR UNIT.
no

Perform the instructed procedures.

yes
11. CHECK AMBIENT SENSOR UNIT.
no

Perform the instructed procedures.

yes
12. CHECK SUNLOAD SENSOR UNIT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK MAX HOT.

Set the A/C control panel dials as follows.

Temperature control dial: MAX HOT

FRESH/RECIRC switch: FRESH

Mode switch or mode dial: HEAT

A/C switch: OFF

Does it fail to blow the hot air?

2

4

2. CHECK AIRFLOW CAPACITY.

Check the airflow capacity. AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > AIR DOES NOT COME OUT, OR AIRFLOW CAPACITY IS INSUFFICIENT

Is the check result OK?

3

Perform repair according to inspection procedure.

3. CHECK ENGINE COOLANT.

Check engine coolant amount.

Is the engine coolant level within the specification?

4

- Add the engine coolant. COOLING(H4DO)>Engine Coolant

- If it is necessary to add the coolant, make sure that there are no engine coolant leaks.

4. CHECK A/C CONTROL PANEL.
1.

Turn the ignition switch to ON.

2.

Turn the temperature control dials (driver’s side) and (passenger’s side) to MAX COOL.

3.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Heater Control Panel Setting Value (Driver's)

- Heater Control Panel Setting Value (Passenger's)

Do [Heater Control Panel Setting Value (Driver's)] and [Heater Control Panel Setting Value (Passenger's)] indicate “60”∗1?

(∗1: For the 72°F center specification. For the 25°C center specification, the value is 18)

5

Replace the A/C control panel. AIR CONDITIONER>Control Panel

5. CHECK A/C CONTROL PANEL.
1.

Turn the temperature control dials (driver’s side) and (passenger’s side) to MAX HOT.

2.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Heater Control Panel Setting Value (Driver's)

- Heater Control Panel Setting Value (Passenger's)

Do [Heater Control Panel Setting Value (Driver's)] and [Heater Control Panel Setting Value (Passenger's)] indicate “85”∗2?

(∗2: For the 72°F center specification. For the 25°C center specification, the value is 32)

6

Replace the A/C control panel. AIR CONDITIONER>Control Panel

6. CHECK DTC.
1.

Turn the ignition switch to ON.

2.

Turn the temperature control dial at MAX COOL and leave for 16 seconds or more. (For vehicles with left/right independent air conditioner, perform setting on both sides.)

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is any of DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A displayed? (Current malfunction)

Perform the diagnosis for the displayed DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A.

7

7. CHECK DTC.
1.

Turn the ignition switch to ON.

2.

Turn the temperature control dial at MAX HOT and leave for 16 seconds or more. (For vehicles with left/right independent air conditioner, perform setting on both sides.)

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is any of DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A displayed? (Current malfunction)

Perform the diagnosis for the displayed DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A.

8

8. CHECK INTAKE DOOR ACTUATOR.

Visually check the intake door actuator operation.

Is the check result OK?

9

Check the intake door actuator. AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > UNABLE TO SWITCH SUCTION VENTS

9. CHECK EVAPORATOR SENSOR UNIT.

Perform the inspection of evaporator sensor unit. AIR CONDITIONER>Evaporator Sensor

Is the check result OK?

10

Replace the evaporator sensor. AIR CONDITIONER>Evaporator Sensor

10. CHECK IN-VEHICLE SENSOR UNIT.

Check in-vehicle sensor. AIR CONDITIONER>Temperature and Humidity Sensor

Is the check result OK?

11

Replace the in-vehicle sensor. AIR CONDITIONER>Temperature and Humidity Sensor

11. CHECK AMBIENT SENSOR UNIT.

Check the ambient sensor. AIR CONDITIONER>Ambient Sensor

Is the check result OK?

12

Replace the ambient sensor. AIR CONDITIONER>Ambient Sensor

12. CHECK SUNLOAD SENSOR UNIT.

Check the sunload sensor unit. AIR CONDITIONER>Sunload Sensor (Auto A/C Model)

Is the check result OK?

- The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

Replace the sunload sensor. AIR CONDITIONER>Sunload Sensor (Auto A/C Model)

6. COMPARTMENT TEMPERATURE IS EXCESSIVELY LOWER THAN SETTING TEMPERATURE

Trouble symptom:

Compartment temperature is excessively lower than setting temperature.

Trouble causes:

- Large airflow capacity

- Refrigerant pressure failure

- CAN communication failure

- A/C control panel failure

- Air mix actuator RH failure

- Air mix actuator LH failure (only with left/right independent air conditioning function)

- Evaporator sensor failure

- In-vehicle sensor failure

- Ambient sensor failure

- Sunload sensor failure

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK AIRFLOW CAPACITY.
no

Perform the instructed procedures.

yes
2. CHECK AMOUNT OF REFRIGERANT PRESSURE.
no

Perform the instructed procedures.

yes
3. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
4. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
5. CHECK DTC.
yes

Perform the instructed procedures.

no

6

6. CHECK DTC.
yes

Perform the instructed procedures.

no

7

7. CHECK EVAPORATOR SENSOR UNIT.
no

Perform the instructed procedures.

yes
8. CHECK IN-VEHICLE SENSOR UNIT.
no

Perform the instructed procedures.

yes
9. CHECK AMBIENT SENSOR UNIT.
no

Perform the instructed procedures.

yes
10. CHECK SUNLOAD SENSOR UNIT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK AIRFLOW CAPACITY.

Check the airflow capacity. AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > AIR GOES OUT OF CONTROL

Is the check result OK?

2

Perform repair according to inspection procedure.

2. CHECK AMOUNT OF REFRIGERANT PRESSURE.

Check the refrigerant pressure. AIR CONDITIONER>Refrigerant Pressure with Manifold Gauge Set

Is the check result OK?

3

Perform repair according to refrigerant pressure inspection.

3. CHECK A/C CONTROL PANEL.
1.

Turn the ignition switch to ON.

2.

Turn the temperature control dials (driver’s side) and (passenger’s side) to MAX COOL.

3.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Heater Control Panel Setting Value (Driver's)

- Heater Control Panel Setting Value (Passenger's)

Do [Heater Control Panel Setting Value (Driver's)] and [Heater Control Panel Setting Value (Passenger's)] indicate “60”∗1?

(∗1: For the 72°F center specification. For the 25°C center specification, the value is 18)

4

Replace the A/C control panel. AIR CONDITIONER>Control Panel

4. CHECK A/C CONTROL PANEL.
1.

Turn the temperature control dials (driver’s side) and (passenger’s side) to MAX HOT.

2.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Heater Control Panel Setting Value (Driver's)

- Heater Control Panel Setting Value (Passenger's)

Do [Heater Control Panel Setting Value (Driver's)] and [Heater Control Panel Setting Value (Passenger's)] indicate “85”∗2?

(∗2: For the 72°F center specification. For the 25°C center specification, the value is 32)

5

Replace the A/C control panel. AIR CONDITIONER>Control Panel

5. CHECK DTC.
1.

Turn the ignition switch to ON.

2.

Turn the temperature control dial at MAX COOL and leave for 16 seconds or more. (For vehicles with left/right independent air conditioner, perform setting on both sides.)

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is any of DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A displayed? (Current malfunction)

Perform the diagnosis for DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A.

6

6. CHECK DTC.
1.

Turn the ignition switch to ON.

2.

Turn the temperature control dial at MAX HOT and leave for 16 seconds or more. (For vehicles with left/right independent air conditioner, perform setting on both sides.)

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is any of DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A displayed? (Current malfunction)

Perform the diagnosis for DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A.

7

7. CHECK EVAPORATOR SENSOR UNIT.

Perform the inspection of evaporator sensor unit. AIR CONDITIONER>Evaporator Sensor

Is the check result OK?

8

Replace the evaporator sensor. AIR CONDITIONER>Evaporator

8. CHECK IN-VEHICLE SENSOR UNIT.

Check in-vehicle sensor. AIR CONDITIONER>Temperature and Humidity Sensor

Is the check result OK?

9

Replace the in-vehicle sensor. AIR CONDITIONER>Temperature and Humidity Sensor

9. CHECK AMBIENT SENSOR UNIT.

Check the ambient sensor. AIR CONDITIONER>Ambient Sensor

Is the check result OK?

10

Replace the ambient sensor. AIR CONDITIONER>Ambient Sensor

10. CHECK SUNLOAD SENSOR UNIT.

Check the sunload sensor unit. AIR CONDITIONER>Sunload Sensor (Auto A/C Model)

Is the check result OK?

- The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

Replace the sunload sensor. AIR CONDITIONER>Sunload Sensor (Auto A/C Model)

7. COMPARTMENT TEMPERATURE IS EXCESSIVELY HIGHER THAN SETTING TEMPERATURE

Trouble symptom:

Compartment temperature is excessively higher than setting temperature.

Trouble causes:

- Large airflow capacity

- CAN communication failure

- A/C control panel failure

- Air mix actuator RH failure

- Air mix actuator LH failure (only with left/right independent air conditioning function)

- Intake door actuator failure

- Evaporator sensor failure

- In-vehicle sensor failure

- Ambient sensor failure

- Sunload sensor failure

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK AIRFLOW CAPACITY.
no

Perform the instructed procedures.

yes
2. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
3. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
4. CHECK DTC.
yes

Perform the instructed procedures.

no

5

5. CHECK DTC.
yes

Perform the instructed procedures.

no

6

6. CHECK INTAKE DOOR ACTUATOR.
no

Perform the instructed procedures.

yes
7. CHECK EVAPORATOR SENSOR UNIT.
no

Perform the instructed procedures.

yes
8. CHECK IN-VEHICLE SENSOR UNIT.
no

Perform the instructed procedures.

yes
9. CHECK AMBIENT SENSOR UNIT.
no

Perform the instructed procedures.

yes
10. CHECK SUNLOAD SENSOR UNIT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK AIRFLOW CAPACITY.

Check the airflow capacity. AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > AIR GOES OUT OF CONTROL

Is the check result OK?

2

Perform repair according to inspection procedure.

2. CHECK A/C CONTROL PANEL.
1.

Turn the ignition switch to ON.

2.

Turn the temperature control dials (driver’s side) and (passenger’s side) to MAX COOL.

3.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Heater Control Panel Setting Value (Driver's)

- Heater Control Panel Setting Value (Passenger's)

Do [Heater Control Panel Setting Value (Driver's)] and [Heater Control Panel Setting Value (Passenger's)] indicate “60”∗1?

(∗1: For the 72°F center specification. For the 25°C center specification, the value is 18)

3

Replace the A/C control panel. AIR CONDITIONER>Control Panel

3. CHECK A/C CONTROL PANEL.
1.

Turn the temperature control dials (driver’s side) and (passenger’s side) to MAX HOT.

2.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Heater Control Panel Setting Value (Driver's)

- Heater Control Panel Setting Value (Passenger's)

Do [Heater Control Panel Setting Value (Driver's)] and [Heater Control Panel Setting Value (Passenger's)] indicate “85”∗2?

(∗2: For the 72°F center specification. For the 25°C center specification, the value is 32)

4

Replace the A/C control panel. AIR CONDITIONER>Control Panel

4. CHECK DTC.
1.

Turn the ignition switch to ON.

2.

Turn the temperature control dial at MAX COOL and leave for 16 seconds or more. (For vehicles with left/right independent air conditioner, perform setting on both sides.)

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is any of DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A displayed? (Current malfunction)

Perform the diagnosis for the displayed DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A.

5

5. CHECK DTC.
1.

Turn the ignition switch to ON.

2.

Turn the temperature control dial at MAX HOT and leave for 16 seconds or more. (For vehicles with left/right independent air conditioner, perform setting on both sides.)

3.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is any of DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A displayed? (Current malfunction)

Perform the diagnosis for the displayed DTC B1440, B1442, B1446, B1436, B1437, B1441, B1448, B1449 or B144A.

6

6. CHECK INTAKE DOOR ACTUATOR.

Visually check the intake door actuator operation.

Is the check result OK?

7

Check the intake door actuator. AIR CONDITIONER(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > UNABLE TO SWITCH SUCTION VENTS

7. CHECK EVAPORATOR SENSOR UNIT.

Perform the inspection of evaporator sensor unit. AIR CONDITIONER>Evaporator Sensor

Is the check result OK?

8

Replace the evaporator sensor. AIR CONDITIONER>Evaporator Sensor

8. CHECK IN-VEHICLE SENSOR UNIT.

Check in-vehicle sensor. AIR CONDITIONER>Temperature and Humidity Sensor

Is the check result OK?

9

Replace the in-vehicle sensor. AIR CONDITIONER>Temperature and Humidity Sensor

9. CHECK AMBIENT SENSOR UNIT.

Check the ambient sensor. AIR CONDITIONER>Ambient Sensor

Is the check result OK?

10

Replace the ambient sensor. AIR CONDITIONER>Ambient Sensor

10. CHECK SUNLOAD SENSOR UNIT.

Check the sunload sensor unit. AIR CONDITIONER>Sunload Sensor (Auto A/C Model)

Is the check result OK?

- The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

Replace the sunload sensor. AIR CONDITIONER>Sunload Sensor (Auto A/C Model)

8. AIR DOES NOT COME OUT, OR AIRFLOW CAPACITY IS INSUFFICIENT

Trouble symptom:

- Airflow capacity is insufficient.

- Air does not come out when operating the fan dial.

Trouble causes:

- Airflow capacity failure

- CAN communication failure

- A/C control panel failure

- Blower motor failure

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK A/C CONTROL PANEL.
no

5

yes
2. CHECK AIRFLOW CAPACITY.
no

Perform the instructed procedures.

yes
3. CHECK A/C FILTER.
no

Perform the instructed procedures.

yes
4. CHECK EACH DUCT.
no

Perform the instructed procedures.

yes
5. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
6. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
7. CHECK CONNECTOR.
no

Perform the instructed procedures.

yes
8. CHECK FUSE.
no

Perform the instructed procedures.

yes
9. CHECK BLOWER MOTOR RELAY ON SIGNAL.
no

Perform the instructed procedures.

yes
10. CHECK BLOWER MOTOR RELAY ON SIGNAL.
no

Perform the instructed procedures.

yes
11. CHECK BLOWER MOTOR POWER SUPPLY CIRCUIT.
no

Perform the instructed procedures.

yes
12. CHECK BLOWER MOTOR UNIT.
no

Perform the instructed procedures.

yes
13. CHECK HARNESS (OPEN CIRCUIT).
no

Perform the instructed procedures.

yes
14. CHECK HARNESS (GROUND SHORT CIRCUIT).
yes

Perform the instructed procedures.

no

15

15. CHECK POWER TRANSISTOR.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK A/C CONTROL PANEL.
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Air mix door actuator position (driver's side)

- Air mix door actuator position (passenger's side)

- Blower Fan Level

3.

Turn the temperature control dial at MAX COOL and increase and decrease the A/C control panel fan dial. (For vehicles with left/right independent air conditioner, perform setting on both sides.)

Do [Air mix door actuator position (driver's side)] and [Air mix door actuator position (passenger's side)] indicate “0%”? Also, does [Blower Fan Level] increase or decrease in accordance with the fan dial operation?

2

5

2. CHECK AIRFLOW CAPACITY.

Turn the temperature control dial to MAX COOL (both dials for the models equipped with left/right independent air conditioning function), A/C control panel fan dial to MAX, and FRESH/RECIRC switch to RECIRC.

Is the airflow capacity insufficient for the same model?

3

- The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

3. CHECK A/C FILTER.

Check the A/C filter. AIR CONDITIONER>A/C Filter

Is the check result OK?

4

Clean or replace the A/C filter. AIR CONDITIONER>A/C Filter

4. CHECK EACH DUCT.

Check each duct joint for disconnection or clogging.

Is the check result OK?

5

Repair the faulty duct.

5. CHECK A/C CONTROL PANEL.
1.

Turn the ignition switch to ON.

2.

Turn the fan dial to the maximum position.

3.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Blower Fan Level

Does [Blower Fan Level] indicate “136 — 181”?

6

Replace the A/C control panel. AIR CONDITIONER>Control Panel

6. CHECK A/C CONTROL PANEL.
1.

Turn the fan dial to the minimum position.

2.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Blower Fan Level

Does [Blower Fan Level] indicate “1 — 15”?

7

Replace the A/C control panel. AIR CONDITIONER>Control Panel

7. CHECK CONNECTOR.

Check for poor contact of connector.

Is the check result OK?

8

Repair the connector.

8. CHECK FUSE.
1.

Remove the fuse No. 8 from fuse & relay box and the fuses No. 37 and No. 38 from the main fuse box.

2.

Check the condition of fuse.

Is the check result OK?

9

Replace the fuse. If the replaced fuse blows out easily, repair the ground short circuit in harness between the pressure switch and fuse.

9. CHECK BLOWER MOTOR RELAY ON SIGNAL.
1.

Stop the engine.

2.

Turn the fan dial OFF.

3.

Turn the ignition switch to ON.

4.

Using a tester, measure the voltage between the A/C control panel connector (i88) and chassis ground.

Connector & terminal

(i88) No. 9 (+) — Chassis ground (−):

Is the voltage 10 V or more?

10

- Check for open or short circuit in the harness between fuse and ECM.

- Check the blower relay connector and relay unit. AIR CONDITIONER>Relay and Fuse

10. CHECK BLOWER MOTOR RELAY ON SIGNAL.
1.

Start the engine.

2.

Turn the fan dial to ON.

3.

Using a tester, measure the voltage between the A/C control panel connector (i88) and chassis ground.

Connector & terminal

(i88) No. 9 (+) — Chassis ground (−):

Is the voltage 0 V?

11

Replace the A/C control panel. AIR CONDITIONER>Control Panel

11. CHECK BLOWER MOTOR POWER SUPPLY CIRCUIT.
1.

Turn the ignition switch to ON.

2.

Turn the fan dial to ON.

3.

Use a tester to measure the voltage between the blower motor connector (i185) and chassis ground.

Connector & terminal

(i185) No. 2 (+) — Chassis ground (−):

Is the voltage 10 V or more?

12

- Check the blower motor power supply line harness for open circuit or connector disconnection.

- Check the blower relay connector and relay unit. AIR CONDITIONER>Relay and Fuse

12. CHECK BLOWER MOTOR UNIT.

Check the blower motor. AIR CONDITIONER>Blower Motor

Is the check result of the blower motor OK?

13

Replace the blower motor. AIR CONDITIONER>Blower Motor

13. CHECK HARNESS (OPEN CIRCUIT).
1.

Disconnect the power transistor and A/C control panel connector.

2.

Using a tester, measure the resistance between harness terminals.

Connector & terminal

(i183) No. 1 — (i185) No. 1:

(i183) No. 3 — (i184) No. 4:

(i183) No. 6 — (i88) No. 40:

(i183) No. 2 — Chassis ground:

Is the resistance less than 1 Ω?

14

Repair or replace the open circuit of harness.

14. CHECK HARNESS (GROUND SHORT CIRCUIT).

Use a tester to measure the harness resistance between the power transistor connector and chassis ground.

Connector & terminal

(i183) No. 6 — Chassis ground:

Is the resistance less than 1 Ω?

Repair or replace the short circuit of the harness.

15

15. CHECK POWER TRANSISTOR.

Replace the power transistor with a properly functioning part.

Does the blower motor rotate?

Replace the power transistor. AIR CONDITIONER>Power Transistor

Replace the A/C control panel. AIR CONDITIONER>Control Panel

9. AIR GOES OUT OF CONTROL

Trouble symptom:

- The blower rotates even though the blower switch is not turned on.

- The blower motor continues to rotate at high speed. (Not adjustable.)

Trouble causes:

- Airflow capacity failure

- CAN communication failure

- A/C control panel failure

- Blower motor failure

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
2. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
3. CHECK HARNESS.
yes

Perform the instructed procedures.

no

4

4. CHECK HARNESS.
yes

Perform the instructed procedures.

no

5

5. CHECK HARNESS.
yes

Perform the instructed procedures.

no

6

6. CHECK A/C CONTROL PANEL.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK A/C CONTROL PANEL.
1.

Turn the ignition switch to ON.

2.

Turn the fan dial to the maximum position.

3.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Blower Fan Level

Does [Blower Fan Level] indicate “136 — 181”?

2

Replace the A/C control panel. AIR CONDITIONER>Control Panel

2. CHECK A/C CONTROL PANEL.
1.

Turn the fan dial to the minimum position.

2.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Blower Fan Level

Does [Blower Fan Level] indicate “1 — 15”?

3

Replace the A/C control panel. AIR CONDITIONER>Control Panel

3. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the power transistor connector.

3.

Use a tester to measure the resistance between the power transistor connector and chassis ground.

Connector & terminal

(i183) No. 3 — Chassis ground:

Is the resistance less than 1 Ω?

Repair or replace the short circuit of the harness between blower motor and power transistor.

4

4. CHECK HARNESS.
1.

Remove the A/C control panel.

2.

Turn the ignition switch to ON.

3.

Use a tester to measure the resistance between the power transistor connector and chassis ground.

Connector & terminal

(i183) No. 6 — Chassis ground:

Is the resistance less than 1 Ω?

Repair or replace the short circuit of the harness between A/C control panel and power transistor.

5

5. CHECK HARNESS.
1.

Connect the disconnected connectors.

2.

Turn the ignition switch to ON.

3.

Use a tester to measure the voltage between the power transistor connector and chassis ground.

Connector & terminal

(i183) No. 6 (+) — Chassis ground (−):

Is the voltage approx. 9.6 V when the fan dial is set to 1st, and approx. 2.7 V when set to 6th?

Replace the power transistor. AIR CONDITIONER>Power Transistor

6

6. CHECK A/C CONTROL PANEL.
1.

Turn the fan dial OFF.

2.

Disconnect the power transistor connector.

3.

Use a tester to measure the resistance between the power transistor connector and chassis ground.

Connector & terminal

(i183) No. 6 — Chassis ground:

When the fan dial is OFF and other than OFF, does the resistance change?

Replace the power transistor. AIR CONDITIONER>Power Transistor

Replace the A/C control panel. AIR CONDITIONER>Control Panel

10. COLD AIR DOES NOT COME OUT EVEN WHEN THE A/C SWITCH IS PRESSED. THE GLASS CANNOT BE DEFOGGED. (COMPRESSOR DOES NOT OPERATE.)

Trouble symptom:

Compressor does not operate after turning the A/C switch to ON and the fan dial to between minimum — maximum.

Trouble causes:

Compressor failure

Wiring diagram:

Air conditioning system WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
2. CHECK VARIABLE FLOW CHANGE SOLENOID DUTY VALUE.
yes

7

no

3

3. CHECK EVAPORATOR SENSOR.
yes

5

no

4

4. CHECK EVAPORATOR SENSOR.
no

Perform the instructed procedures.

yes
5. CHECK REFRIGERANT PRESSURE SENSOR.
yes

7

no

6

6. CHECK AMOUNT OF REFRIGERANT PRESSURE.
no

Perform the instructed procedures.

yes
7. CHECK VARIABLE SOLENOID CIRCUIT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK A/C CONTROL PANEL.
1.

Leave the vehicle under the condition at ambient temperature of 15°C (59°F) or more.

2.

Turn the ignition switch to ON.

3.

Turn the fan dial to the maximum position.

4.

Press the A/C switch.

Is A/C indicator displayed on the A/C control panel? (Current malfunction)

2

Replace the A/C control panel. AIR CONDITIONER>Control Panel

2. CHECK VARIABLE FLOW CHANGE SOLENOID DUTY VALUE.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Variable Flow Change Solenoid Duty

Does the display indicate the value greater than zero?

7

3

3. CHECK EVAPORATOR SENSOR.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Evaporator Temperature

Does the display indicate −0.5°C or more?

5

4

4. CHECK EVAPORATOR SENSOR.

Check the evaporator sensor. AIR CONDITIONER>Evaporator Sensor

Is the check result OK?

5

Replace the evaporator sensor. AIR CONDITIONER>Evaporator Sensor

5. CHECK REFRIGERANT PRESSURE SENSOR.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Refrigerant Pressure

Does the display indicate 0.248 Mpa — 2.793 Mpa?

7

6

6. CHECK AMOUNT OF REFRIGERANT PRESSURE.

Check the refrigerant pressure. AIR CONDITIONER>Refrigerant Pressure with Manifold Gauge Set

Is the check result OK?

7

Perform repair according to refrigerant pressure inspection.

7. CHECK VARIABLE SOLENOID CIRCUIT.
1.

Start the engine.

2.

Turn the A/C switch to ON.

3.

Turn the fan dial to the maximum position.

4.

Set the temperature control dial to MAX COOL and wait for 30 seconds or more.

5.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14A7 displayed? (Current malfunction)

Perform the diagnosis for the displayed DTC B14A7.

Replace the compressor. AIR CONDITIONER>Compressor

11. UNABLE TO SWITCH SUCTION VENTS

Trouble symptom:

Even when the FRESH/RECIRC switch is pressed, the inlet opening does not switch to RECIRC → FRESH or FRESH → RECIRC.

Trouble causes:

Intake door actuator failure

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. VISUALLY CHECK FRESH/RECIRC DOOR OPERATION.
yes

Perform the instructed procedures.

no

2

2. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
3. CHECK DTC.
yes

Perform the instructed procedures.

no

4

4. CHECK DTC.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. VISUALLY CHECK FRESH/RECIRC DOOR OPERATION.
1.

Remove the glove box. EXTERIOR/INTERIOR TRIM>Glove Box>REMOVAL

2.

Operate the FRESH/RECIRC switch, and visually check the intake door operation.

Does the intake door operate normally? Is the position between the intake door and intake door case sealed completely?

- The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

2

2. CHECK A/C CONTROL PANEL.
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Fresh/Recircle Air Door Actuator Position Target

3.

Operate the FRESH/RECIRC switch.

Does Fresh/Recircle Air Door Actuator Position Target indicate 0 ←→ 100?

3

Replace the A/C control panel. AIR CONDITIONER>Control Panel

3. CHECK DTC.
1.

Turn the FRESH/RECIRC switch to RECIRC, and leave for 16 seconds or more.

2.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14E9, B14EA or B14EB displayed? (Current malfunction)

Perform the diagnosis for the displayed DTC B14E9, B14EA, or B14EB. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14E9 INTAKE DOOR ACTUATOR CIRCUIT OPEN AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14EA INTAKE DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14EB INTAKE DOOR ACTUATOR STUCK

4

4. CHECK DTC.
1.

Turn the FRESH/RECIRC switch to FRESH, and leave for 16 seconds or more.

2.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B14E9, B14EA or B14EB displayed? (Current malfunction)

Perform the diagnosis for the displayed DTC B14E9, B14EA, or B14EB. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14E9 INTAKE DOOR ACTUATOR CIRCUIT OPEN AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14EA INTAKE DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B14EB INTAKE DOOR ACTUATOR STUCK

- The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

12. UNABLE TO SWITCH VENTS

Trouble symptom:

- Unable to switch blow vents.

- Outlet opening does not switch in the sequence of VENT → B/L → HEAT → D/H after operating the mode switch or mode dial.

Trouble causes:

Mode actuator failure

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK A/C CONTROL PANEL.
no

Perform the instructed procedures.

yes
2. CHECK DTC.
yes

Perform the instructed procedures.

no

3

3. CHECK DTC.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK A/C CONTROL PANEL.
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Air Conditioner]. AIR CONDITIONER(DIAGNOSTICS)>Data Monitor

- Mode Door Actuator Position Target

3.

Operate the mode change switch.

Does the value of [Mode Door Actuator Position Target] change along with the operation?

2

Replace the A/C control panel. AIR CONDITIONER>Control Panel

2. CHECK DTC.
1.

Set the mode change switch to DEF, and wait for 16 seconds or more.

2.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1438 or B1439 displayed? (Current malfunction)

Perform the diagnosis for the displayed DTC B1438 or B1439. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1438 MODE DOOR ACTUATOR CIRCUIT OPEN AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1439 MODE DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT

3

3. CHECK DTC.
1.

Set the mode change switch to VENT, and wait for 16 seconds or more.

2.

Read the DTC of [Air Conditioner] using the Subaru Select Monitor. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B1438 or B1439 displayed? (Current malfunction)

Perform the diagnosis for the displayed DTC B1438 or B1439. AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1438 MODE DOOR ACTUATOR CIRCUIT OPEN AIR CONDITIONER(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B1439 MODE DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT

- The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

13. ILLUMINATION DOES NOT COME ON OR CANNOT DIM

Trouble symptom:

Even when the lighting switch is operated, the illumination does not come on. Even when the illumination control is operated, the illumination does not dim.

Trouble symptom:

Open circuit in illumination circuit

Wiring diagram:

Clearance light and illumination light system WIRING SYSTEM>Clearance Light and Illumination Light System>WIRING DIAGRAM

Before performing diagnosis, refer to “CAUTION” in “General Description”. AIR CONDITIONER(DIAGNOSTICS)>General Description>CAUTION

1. CHECK ILLUMINATION.
no

Perform the instructed procedures.

yes
2. CHECK CONNECTOR.
no

Perform the instructed procedures.

yes
3. CHECK HARNESS (OPEN CIRCUIT).
no

Perform the instructed procedures.

yes
4. CHECK HARNESS (OPEN CIRCUIT).
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK ILLUMINATION.

Make sure that all illuminations except A/C come on.

Do other illuminations come on?

2

Check the illumination circuit. LIGHTING SYSTEM>Clearance Light and Illumination Light System>INSPECTION

2. CHECK CONNECTOR.

Check for poor contact of connector.

Is the check result OK?

3

Repair the connector.

3. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the lighting switch to ON.

2.

Using a tester, measure the voltage between the A/C control panel connector and chassis ground.

Connector & terminal

(i88) No. 37 (+) — Chassis ground (−):

Is the voltage 10 V or more?

4

Repair or replace the open circuit of harness.

4. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the lighting switch to OFF.

2.

Measure the resistance between A/C control panel connector and combination meter connector.

Connector & terminal

(i88) No. 35 — (i10) No. 34:

Is the resistance less than 10 Ω?

Replace the A/C control panel. AIR CONDITIONER>Control Panel

Repair or replace the open circuit of harness.