HEADLIGHT / FOGLIGHT(DIAGNOSTICS)
LT(diag)

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Basic Diagnostic Procedure
PROCEDURE

1. PERFORM CUSTOMER INTERVIEW.

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

Did you interview the customer?

2

Perform the interview, and 2

2. BASIC INSPECTION.

Perform basic inspection. HEADLIGHT / FOGLIGHT(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 [Headlight / Foglight].

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

Is communication possible?

4

Check the communication circuit. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure for Subaru Select Monitor Communication

4. CHECK DTC.
1.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

2.

Record all DTCs, time stamp and freeze frame data.

For time stamp, refer to “LAN SYSTEM”. LAN SYSTEM (DIAGNOSTICS)>General Description>CAUTION > TIME STAMP

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. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostics with Phenomenon

5. PERFORM DIAGNOSIS.
1.

Perform the diagnosis according to displayed DTC. HEADLIGHT / FOGLIGHT(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 [Headlight / Foglight]. COMMON(diag)>Clear memory

4.

Execute the inspection mode. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Inspection Mode

5.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are any DTCs displayed? (Current malfunction)

Repeat step 5 until DTC is not shown.

Finish the diagnosis.

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Check List for Interview
CHECK

Inspect the following items regarding the vehicle’s state.

1. AUTO HEADLIGHT BEAM LEVELER SYSTEM

Auto Headlight Beam Leveler System Check List for Interview          Date the Vehicle is Received   Year   Month   Day
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 |  | Occurrence location |
Accessory installation condition |
Confirmation of trouble condition |
Diagnostic trouble code |

2. STEERING RESPONSIVE HEADLIGHT

Steering • Responsive • Headlight Check List for Interview          Date the Vehicle is Received   Year   Month   Day
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 |
Accessory installation condition |
Confirmation of trouble condition | Curve of trouble occurrence | Right-hand curve Left-hand curve Both
Information on curve of trouble occurrence Check the location and curve on the map. | Specific location Gentle curve Sharp curve Uphill Downhill Other
Vehicle speed at trouble occurrence | Approximately  km/h (MPH)
SRH OFF indicator status | Light OFF Light ON Blink
Headlight switch operation | Lo-Hi switch available Lo-Hi switch unavailable
Range inspection for CVT vehicle | Shift indicator operates according to the shift position Shift indicator does not operate according to the shift position
Diagnostic trouble code |

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > General Description
CAUTION
1. AIRBAG SYSTEM

Before performing diagnosis, refer to “CAUTION” in “General Description” in AIRBAG SYSTEM. AIRBAG SYSTEM>General Description>CAUTION

2. AUTO HEADLIGHT BEAM LEVELER SYSTEM / STEERING RESPONSIVE HEADLIGHT / LED HEADLIGHT SYSTEM

Before performing diagnosis, refer to “CAUTION” in “General Description” in LIGHTING SYSTEM. LIGHTING SYSTEM>General Description>CAUTION

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > General Description
INSPECTION
1. BASIC INSPECTION

Before performing diagnosis, check the following items which might affect the problems related to auto headlight beam leveler system or steering responsive headlight.

1.

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

2.

Check the relay and fuse condition. LIGHTING SYSTEM>Relay and Fuse

3.

Check the connecting condition of harness and harness connector.

2. FUNCTION CHECK
AUTO HEADLIGHT BEAM LEVELER SYSTEM
1.

Turn the ignition switch to ON.

2.

Turn on the headlight low beam.

3.

Check that the beam axes move when the vehicle condition is kept for three seconds or more after the vehicle posture is changed with the vehicle stopped.

LED HEADLIGHT SYSTEM
1.

Turn the ignition switch to ON.

2.

Turn on the headlight low beam.

3.

Check that the headlight Low beam illuminates with normal brightness.

STEERING RESPONSIVE HEADLIGHT (THE INITIALIZE FUNCTION)
1.

Stop the vehicle at approximately 1 m (3.3 ft) away and perpendicular to the wall.

2.

Make the vehicle vicinity dark.

3.

Set the vehicle headlight switch to Low beam.

4.

Make sure that the headlight cut line moves to left and right immediately after the engine started.

HEADLIGHT / FOGLIGHT(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.

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > General Description
SYSTEM BLOCK DIAGRAM

- Auto headlight beam leveler

  The auto headlight beam leveler is a system that automatically adjusts the headlight beam level (vertical directions) according to the longitudinal inclination angle of the vehicle due to heavy load or passengers’ getting in/off a car.

- Steering responsive headlight

  The steering responsive headlight is a system that calculates the corner R from the steering angle and vehicle speed to illuminate beyond the corner by moving the headlight beam to left and right.

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Electrical Component Location
LOCATION

(1) | Headlight ASSY Headlight beam leveler actuator SRH swivel actuator | (4) | ECM | (7) | M/B fuse No. 3
(2) | VDC CM | (5) | Stereo camera | (8) | M/B fuse No. 4
(3) | TCM | (6) | Headlight relay Lo

(1) | Body integrated unit | (4) | Auto headlight beam leveler CM | (6) | F/B fuse No. 18
(2) | Data link connector | (5) | F/B fuse No. 14 | (7) | SRH OFF switch
(3) | Combination meter

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Control Module I/O Signal
ELECTRICAL SPECIFICATION

Terminal No. | Contents | Measuring condition | Standard
(B150) No. 1 (+) ←→ Chassis ground (−) | Battery power supply | Always | 8 — 16 V
(B150) No. 2 (+) ←→ Chassis ground (−) | GND | Always | Less than 1 Ω
(B150) No. 3 (+) ←→ Chassis ground (−) | Ignition power supply | Ignition switch ON | 8 — 16 V
(B150) No. 4 | — | — | —
(B150) No. 5 | — | — | —
(B150) No. 6 ←→ Chassis ground | Leveling actuator power supply | Ignition switch ON | 8 — 16 V
(B150) No. 7 ←→ Chassis ground | Leveling actuator GND | Always | Less than 1 Ω
(B150) No. 8 | — | — | —
(B150) No. 9 ←→ Chassis ground | Leveling actuator signal | Headlight off → on | Less than 1 V → 1.0 — 14.4 V (for 17 seconds)
Headlight on, no vehicle height change → change and hold vehicle height for 3 seconds or more
(B150) No. 10 ←→ Chassis ground | SRH OFF switch∗1 | Switch OFF → ON (at SRH OFF) | 1 MΩ or more → less than 1 Ω
(B150) No. 11 ←→ Chassis ground | LH headlight malfunction signal | Always | 1 MΩ or more
(B150) No. 12 ←→ Chassis ground | RH headlight malfunction signal | Always | 1 MΩ or more
(B150) No. 13 ←→ Chassis ground | SRH signal (LIN)∗1 | Always | 1 MΩ or more
(B150) No. 14 ←→ Chassis ground | SRH GND∗1 | Always | Less than 1 Ω
(B150) No. 15 ←→ Chassis ground | CAN‐H | Always | 1 MΩ or more
(B150) No. 16 ←→ Chassis ground | CAN‐L | Always | 1 MΩ or more

∗1: Vehicle equipped with SRH

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Inspection Mode
PROCEDURE
1.

Turn the ignition switch to ON.

2.

Turn on the headlight low beam.

3.

Check that the beam axes move when the vehicle condition is kept for three seconds or more after the vehicle posture is changed with the vehicle stopped.

4.

Using the Subaru Select Monitor, read the DTC of [Headlight / Foglight] to check that there is no DTC displayed. HEADLIGHT / FOGLIGHT(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.

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure for Subaru Select Monitor Communication
INSPECTION

Communication error with auto headlight beam leveler CM

Detecting condition:

- Defective harness connector

- Power supply circuit malfunction

- Defective auto headlight beam leveler CM

- Defective CAN communication circuit

- Defective Subaru Select Monitor

Trouble symptom:

Communication is impossible between auto headlight beam leveler CM and Subaru Select Monitor.

Wiring diagram:

Headlight beam leveler system WIRING SYSTEM>Headlight Beam Leveler System>WIRING DIAGRAM

Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

1. CHECK FUSE.

Check the fuse. LIGHTING SYSTEM>Relay and Fuse

Is the fuse OK?

2

Replace the fuse. If the replaced fuse has blown out immediately, repair the short circuit to ground in harness between battery and auto headlight beam leveler CM.

2. CHECK HARNESS.
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector of combination meter.

3.

Turn the ignition switch to ON.

4.

Using a tester, measure the voltage between auto headlight beam leveler CM connector and chassis ground.

Connector & terminal

(B616) No. 1 — Chassis ground:

(B616) No. 3 — Chassis ground:

Is the voltage 10 — 13 V?

3

Repair the open circuit in the harness between auto headlight beam leveler CM connector and fuse.

3. CHECK HARNESS.

Using a tester, measure the resistance between the auto headlight beam leveler CM connector and chassis ground.

Connector & terminal

(B616) No. 2 — Chassis ground:

Is the resistance less than 1 Ω?

4

Repair the open circuit of harness between auto headlight beam leveler CM connector and chassis ground.

4. CHECK LAN SYSTEM.

Inspect LAN system. LAN SYSTEM (DIAGNOSTICS)>Basic Diagnostic Procedure

Is the check result OK?

5

Perform the inspection according to the diagnosis for LAN system.

5. CHECK SUBARU SELECT MONITOR.
1.

Connect the select monitor to another vehicle.

2.

Check whether the communication for initializing can be executed normally.

Is communication normal?

6

Repair or replace the Subaru Select Monitor.

6. CHECK AUTO HEADLIGHT BEAM LEVELER CM.
1.

Turn the ignition switch to OFF.

2.

Connect the auto headlight beam leveler CM connector.

3.

Turn the ignition switch to ON.

4.

Communicate with [Headlight / Foglight] using the Subaru Select Monitor.

Is communication possible?

- 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 auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

HEADLIGHT / FOGLIGHT(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. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor>LIST

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Data Monitor
LIST

Item name | Contents | Standard/Unit | Note
Trip Count | Time stamp information COMMON(diag)>Time Stamp Time stamp information, original counter identification information Time stamp information, time counter | time | —
Count | — | —
Time Count | ms | —
Actuator Signal | Power supply voltage value to headlight beam leveler actuator | Not in operation: 0% In operation: 10 — 90% (17 Sec) | Changes according to vehicle condition.
Control module voltage | IG voltage condition of auto headlight beam leveler CM | 8 — 16 V | —
Vehicle speed signal | Status of vehicle speed | Shows vehicle speed | —
H/L Lo Signal | Headlight lighting condition | Light Off: Light switch is OFF ON: Light sensor in operation when light switch is in HEAD or AUTO position | —
LED HEADLAMP(LH) error Signal | Open circuit detection signal status | Light Off: Open circuit undetected ON: Open circuit detected | —
LED HEADLAMP(RH) error Signal | Open circuit detection signal status | Light Off: Open circuit undetected ON: Open circuit detected | —
Steering Angle Signal | Steering angle status | −3276.7 — 3276.7 deg | —
Shift Position Signal | Shift lever position | P, R, N, D, D-S, 3 range, 2 range, 1 range | —
MT Reverse SW | Displays reverse switch signal status (MT). | ON: When shift lever is set in reverse position OFF: When shift lever is set in other than reverse position | —
SRH-OFF SW | SRH OFF switch signal | ON: When SRH OFF switch is ON OFF: When SRH OFF switch is OFF | —
Engine Speed | Engine speed signal | 0 — 65535 rpm | —
Vehicle Height | Vehicle height signal | Unknown: When other than the followings XV/OBK: When XV/OBK SDN/WGN: When other than SDN/WGN | —
Left Steering Responsive Headlight Current Angle | SRH swivel actuator current angle (LH) signal | −3276.7 — 3276.7 deg | —
Right Steering Responsive Headlight Current Angle | SRH swivel actuator current angle (RH) signal | −3276.7 — 3276.7 deg | —
Left Steering Responsive Headlight Target Angle | SRH swivel actuator target angle (LH) signal | −3276.7 — 3276.7 deg | —
Right Steering Responsive Headlight Target Angle | SRH swivel actuator target angle (RH) signal | −3276.7 — 3276.7 deg | —
Left Steering Responsive Headlight Power Supply Failure | SRH swivel actuator power supply failure (LH) signal | Avail.: At normal condition FAIL: Abnormal | —
Right Steering Responsive Headlight Power Supply Failure | SRH swivel actuator power supply failure (RH) signal | Avail.: At normal condition FAIL: Abnormal | —
Left Steering Responsive Headlight Motor Failure | SRH swivel actuator motor failure (LH) signal | Avail.: At normal condition FAIL: Abnormal | —
Right Steering Responsive Headlight Motor Failure | SRH swivel actuator motor failure (RH) signal | Avail.: At normal condition FAIL: Abnormal | —
Left Steering Responsive Headlight Sensor Failure | SRH swivel actuator sensor error (LH) signal | Avail.: At normal condition FAIL: Abnormal | —
Right Steering Responsive Headlight Sensor Failure | SRH swivel actuator sensor error (RH) signal | Avail.: At normal condition FAIL: Abnormal | —

HEADLIGHT / FOGLIGHT(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. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Freeze Frame Data>LIST

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Freeze Frame Data
LIST

Items to be displayed | Contents | Standard/Unit | Note
Trip Count | Time stamp information COMMON(diag)>Time Stamp Time stamp information, original counter identification information Time stamp information, time counter | time | —
Count | — | —
Time Count [msec] | ms | —

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Active Test
OPERATION

Available only for models with steering responsive headlight.

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 [Headlight / Foglight], and then select [Enter].

5.

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

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

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Active Test
LIST

Active test items | Range | Contents | Execution condition
Right Steering Responsive Headlight | −18 — +5 deg | SRH swivel actuator on the right side operates. Used for unit inspection etc. of the SRH swivel actuator. | —
Left Steering Responsive Headlight | −18 — +5 deg | SRH swivel actuator on the left side operates. Used for unit inspection etc. of the SRH swivel actuator. | —

HEADLIGHT / FOGLIGHT(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 [Headlight / Foglight], and then select [Enter].

5.

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

6.

On [Customize] screen, select an item to be customized.

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

- For details on customization, refer to the list. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Customize>LIST

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

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Customize
LIST

Item | Initial setting value | Setting value | Remarks
SRH/ADB Setup | ON | ON | -
OFF | -
Initial Drive Setting | ON | ON | -
OFF | -

HEADLIGHT / FOGLIGHT(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. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Trouble Code (DTC)
LIST

Code | Description & trouble position | Reference
B2900 | AHL CONTROL | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2900 AHL CONTROL
B2904 | LED HEADLIGHT CIRCUIT RH | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2904 LED HEADLIGHT CIRCUIT RH
B2905 | LED HEAD LIGHT CIRCUIT LH | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2905 LED HEAD LIGHT CIRCUIT LH
B2908 | STEERING RESPONSIVE HEADLIGHT ACTUATOR RH | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2908 STEERING RESPONSIVE HEADLIGHT ACTUATOR RH
B2909 | STEERING RESPONSIVE HEADLIGHT ACTUATOR LH | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2909 STEERING RESPONSIVE HEADLIGHT ACTUATOR LH
B2910 | STEERING RESPONSIVE HEADLIGHT COMMUNICATION RH | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2910 STEERING RESPONSIVE HEADLIGHT COMMUNICATION RH
B2911 | STEERING RESPONSIVE HEADLIGHT COMMUNICATION LH | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2911 STEERING RESPONSIVE HEADLIGHT COMMUNICATION LH
B2916 | AUTO HEADLAMP LEVELING CIRCUIT | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2916 AUTO HEADLAMP LEVELING CIRCUIT
B2917 | AUTO HEADLAMP LEVELING SWITCH STUCK | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2917 AUTO HEADLAMP LEVELING SWITCH STUCK
B2918 | AUTO HEADLAMP LEVELING ACTUATOR MOTOR CIRCUIT | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2918 AUTO HEADLAMP LEVELING ACTUATOR MOTOR CIRCUIT
B2919 | AUTO HEADLAMP LEVELING SENSOR SIGNAL | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2919 AUTO HEADLAMP LEVELING SENSOR SIGNAL
B291A | AUTO HEADLAMP LEVELING SENSOR RANGE/PERFORMANCE | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B291A AUTO HEADLAMP LEVELING SENSOR RANGE/PERFORMANCE
U0074 | CONTROL MODULE COMMUNICATION BUS "BODY-CAN" OFF | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0074 CONTROL MODULE COMMUNICATION BUS "BODY-CAN" OFF
U0101 | LOST COMMUNICATION WITH TCM | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0101 LOST COMMUNICATION WITH TCM
U0122 | LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE
U0402 | INVALID DATA RECEIVED FROM TCM | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0402 INVALID DATA RECEIVED FROM TCM
U0416 | INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U0416 INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE
U1140 | LOST COMMUNICATION WITH BODY CONTROL MODULE BODY-CAN | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U1140 LOST COMMUNICATION WITH BODY CONTROL MODULE BODY-CAN
U1422 | INVALID DATA RECEIVED FROM BODY CONTROL MODULE BODY-CAN | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U1422 INVALID DATA RECEIVED FROM BODY CONTROL MODULE BODY-CAN

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B2900 AHL CONTROL

DTC detecting condition:

Detected when internal malfunction occurs in the auto headlight beam leveler CM.

Trouble symptom:

The auto headlight beam leveler does not operate.

Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

1. CHECK DTC.
1.

Turn the ignition switch OFF → ON.

2.

Turn on the headlight low beam.

3.

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

4.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is any of DTC B2900, B2916, B2917, B2918, B2919 or B291A displayed? (Current malfunction)

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

- 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.

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B2904 LED HEADLIGHT CIRCUIT RH

DTC detecting condition:

LED headlight (RH) malfunction signal line error is detected for 2 seconds or more.

Trouble symptom:

LED headlight malfunction, LED headlight indicator illuminates.

Wiring diagram:

- Headlight beam leveler system WIRING SYSTEM>Headlight Beam Leveler System>WIRING DIAGRAM

- Headlight system WIRING SYSTEM>Headlight System>WIRING DIAGRAM

- Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

- After replacing the headlight assembly, headlight beam adjustment is required. LIGHTING SYSTEM>Headlight Assembly>ADJUSTMENT

1. CHECK DTC.
1.

Turn the ignition switch OFF → ON.

2.

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

3.

Turn the ignition switch to OFF → ON.

4.

Turn the lighting switch to 2 (HEAD).

5.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B2904 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 DATA MONITOR.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- LED HEADLAMP(RH) error Signal

Does the data indicate [Light off]?

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

3

3. CHECK THE HEADLIGHT SYSTEM POWER SUPPLY CIRCUIT.
1.

Disconnect the headlight assembly RH and LH connectors.

2.

Turn the ignition switch to OFF → ON.

3.

Turn the lighting switch to 2 (HEAD).

4.

Using a tester, measure the voltage between headlight assembly RH connector and chassis ground.

Connector & terminal

(B487) No. 1 (+) — Chassis ground (−):

Is the voltage 10 — 13 V?

4

Repair the headlight system.

4. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Using a tester, measure the resistance between headlight assembly RH and LH connector and chassis ground.

Connector & terminal

(B487) No. 3 — Chassis ground:

Is the resistance less than 10 Ω?

5

Repair or replace the open circuit of harness.

5. CHECK HEADLIGHT SYSTEM.
1.

Connect the headlight assembly RH connector.

2.

Turn the ignition switch to OFF → ON.

3.

Turn the lighting switch to 2 (HEAD).

Does the headlight come on at normal brightness?

6

Replace the headlight. LIGHTING SYSTEM>Headlight Assembly

6. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Disconnect the auto headlight beam leveler CM connector.

3.

Using a tester, measure the resistance between auto headlight beam leveler CM connector and headlight assembly RH connector.

Connector & terminal

(B616) No. 12 — (B487) No. 5:

Is the resistance less than 10 Ω?

7

Repair or replace the open circuit of harness.

7. CHECK HARNESS (OPEN CIRCUIT).

Using a tester, measure the resistance between the auto headlight beam leveler CM connector and chassis ground.

Connector & terminal

(B616) No. 2 — Chassis ground:

Is the resistance less than 10 Ω?

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

Repair or replace the open circuit of harness.

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B2905 LED HEAD LIGHT CIRCUIT LH

DTC detecting condition:

LED headlight (LH) malfunction signal line error is detected for 2 seconds or more.

Trouble symptom:

LED headlight malfunction, LED headlight indicator illuminates.

Wiring diagram:

- Headlight beam leveler system WIRING SYSTEM>Headlight Beam Leveler System>WIRING DIAGRAM

- Headlight system WIRING SYSTEM>Headlight System>WIRING DIAGRAM

- Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

- After replacing the headlight assembly, headlight beam adjustment is required. LIGHTING SYSTEM>Headlight Assembly>ADJUSTMENT

1. CHECK DTC.
1.

Turn the ignition switch OFF → ON.

2.

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

3.

Turn the ignition switch to OFF → ON.

4.

Turn the lighting switch to 2 (HEAD).

5.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B2905 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 DATA MONITOR.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- LED HEADLAMP(LH) error Signal

Does the data display [Extinction]?

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

3

3. CHECK THE HEADLIGHT SYSTEM POWER SUPPLY CIRCUIT.
1.

Disconnect the headlight assembly LH and RH connectors.

2.

Turn the ignition switch to OFF → ON.

3.

Turn the lighting switch to 2 (HEAD).

4.

Using a tester, measure the voltage between headlight assembly LH connector and chassis ground.

Connector & terminal

(B477) No. 1 (+) — Chassis ground (−):

Is the voltage 10 — 13 V?

4

Repair the headlight system.

4. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Using a tester, measure the resistance between headlight assembly LH connector and chassis ground.

Connector & terminal

(B477) No. 3 — Chassis ground:

Is the resistance less than 10 Ω?

5

Repair or replace the open circuit of harness.

5. CHECK HEADLIGHT SYSTEM.
1.

Connect the headlight assembly LH connector.

2.

Turn the ignition switch to OFF → ON.

3.

Turn the lighting switch to 2 (HEAD).

Does the headlight come on at normal brightness?

6

Replace the headlight. LIGHTING SYSTEM>Headlight Assembly

6. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Disconnect the auto headlight beam leveler CM connector.

3.

Using a tester, measure the resistance between auto headlight beam leveler CM connector and headlight assembly LH connector.

Connector & terminal

(B616) No. 11 — (B477) No. 5:

Is the resistance less than 10 Ω?

7

Repair or replace the open circuit of harness.

7. CHECK HARNESS (OPEN CIRCUIT).

Using a tester, measure the resistance between the auto headlight beam leveler CM connector and chassis ground.

Connector & terminal

(B616) No. 2 — Chassis ground:

Is the resistance less than 10 Ω?

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

Repair or replace the open circuit of harness.

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B2908 STEERING RESPONSIVE HEADLIGHT ACTUATOR RH

DTC detecting condition:

Fail flag (failures shown below) of the SRH actuator is detected for 1 second or more.

- Overheating of the actuator driving IC is detected.

- Short circuit, open circuit of the motor coil is detected.

- Abnormality of the motor position sensor is detected.

- Motor lock is detected.

Trouble symptom:

The steering responsive headlight does not operate. SRH indicator blinks.

Wiring diagram:

Headlight beam leveler system WIRING SYSTEM>Headlight Beam Leveler System>WIRING DIAGRAM

- Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

- After replacing the headlight assembly, headlight beam adjustment is required. LIGHTING SYSTEM>Headlight Assembly>ADJUSTMENT

1. CHECK DTC.
1.

Turn the ignition switch to OFF.

2.

Start the engine.

3.

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

4.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B2908 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 DTC.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is a DTC other than DTC B2908 displayed?

Perform the diagnosis other than for DTC B2909 first. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

3

3. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Disconnect the headlight assembly RH connector and LH connector.

3.

Disconnect the auto headlight beam leveler CM connector.

4.

Using a tester, measure the resistance between auto headlight beam leveler CM connector and headlight assembly RH connector.

Connector & terminal

(B616) No. 13 — (B487) No. 4:

(B616) No. 14 — (B487) No. 7:

Is the resistance less than 1 Ω?

4

Repair or replace the open circuit of harness.

4. CHECK HARNESS (GROUND SHORT CIRCUIT).

Using a tester, measure the resistance between the auto headlight beam leveler CM connector and chassis ground.

Connector & terminal

(B616) No. 7 — Chassis ground:

(B616) No. 9 — Chassis ground:

Is the resistance 1 MΩ or more?

5

Repair or replace the short circuit of the harness.

5. CHECK HARNESS (SHORT CIRCUIT TO POWER SUPPLY).
1.

Turn the ignition switch to ON.

2.

Using a tester, measure the voltage between auto headlight beam leveler CM connector and chassis ground.

Connector & terminal

(B616) No. 13 (+) — Chassis ground (−):

(B616) No. 14 (+) — Chassis ground (−):

Is the voltage less than 1 V?

6

Repair or replace the short circuit of the harness.

6. CHECK ACTIVE TEST FOR SWIVEL ACTUATOR.
1.

Turn the ignition switch to OFF.

2.

Connect all the disconnected connectors.

3.

Start the engine.

4.

Using the Subaru Select Monitor, check the following items in the [Active Test] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Active Test

- Right Steering Responsive Headlight

Is the actuator current position value approximately the same as the input value of the actuator control position?

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

Replace the headlight assembly RH. LIGHTING SYSTEM>Headlight Assembly

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B2909 STEERING RESPONSIVE HEADLIGHT ACTUATOR LH

DTC detecting condition:

Fail flag (failures shown below) of the SRH actuator is detected for 1 second or more.

- Overheating of the actuator driving IC is detected.

- Short circuit, open circuit of the motor coil is detected.

- Abnormality of the motor position sensor is detected.

- Motor lock is detected.

Trouble symptom:

The steering responsive headlight does not operate. SRH indicator blinks.

Wiring diagram:

Headlight beam leveler system WIRING SYSTEM>Headlight Beam Leveler System>WIRING DIAGRAM

- Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

- After replacing the headlight assembly, headlight beam adjustment is required. LIGHTING SYSTEM>Headlight Assembly>ADJUSTMENT

1. CHECK DTC.
1.

Turn the ignition switch OFF → ON.

2.

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

3.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B2909 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 DTC.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is a DTC other than DTC B2909 displayed? (Current malfunction)

Perform the diagnosis other than for DTC B2909 first. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

3

3. CHECK HARNESS (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Disconnect the headlight assembly LH connector and RH connector.

3.

Disconnect the auto headlight beam leveler CM connector.

4.

Using a tester, measure the resistance between auto headlight beam leveler CM connector and headlight assembly LH connector.

Connector & terminal

(B616) No. 13 — (B477) No. 4:

(B616) No. 14 — (B477) No. 7:

Is the resistance less than 1 Ω?

4

Repair or replace the open circuit of harness.

4. CHECK HARNESS (GROUND SHORT CIRCUIT).

Using a tester, measure the resistance between the auto headlight beam leveler CM connector and chassis ground.

Connector & terminal

(B616) No. 13 — Chassis ground:

(B616) No. 14 — Chassis ground:

Is the resistance 1 MΩ or more?

5

Repair or replace the short circuit of the harness.

5. CHECK HARNESS (SHORT CIRCUIT TO POWER SUPPLY).
1.

Turn the ignition switch to ON.

2.

Using a tester, measure the voltage between auto headlight beam leveler CM connector and chassis ground.

Connector & terminal

(B616) No. 13 (+) — Chassis ground (−):

(B616) No. 14 (+) — Chassis ground (−):

Is the voltage less than 1 V?

6

Repair or replace the short circuit of the harness.

6. CHECK ACTIVE TEST OF SWIVEL ACTUATOR.
1.

Turn the ignition switch to OFF.

2.

Connect all the disconnected connectors.

3.

Start the engine.

4.

Using the Subaru Select Monitor, check the following items in the [Active Test] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Active Test

- Left Steering Responsive Headlight

Is the actuator current position value approximately the same as the input value of the actuator control position?

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

Replace the headlight assembly LH. LIGHTING SYSTEM>Headlight Assembly

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B2910 STEERING RESPONSIVE HEADLIGHT COMMUNICATION RH

DTC detecting condition:

LIN data no-receive or data abnormal of the SRH actuator is detected for at least one second.

Trouble symptom:

The steering responsive headlight does not operate. SRH indicator blinks.

Wiring diagram:

Headlight beam leveler system WIRING SYSTEM>Headlight Beam Leveler System>WIRING DIAGRAM

- Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

- After replacing the headlight assembly, headlight beam adjustment is required. LIGHTING SYSTEM>Headlight Assembly>ADJUSTMENT

1. CHECK DTC.
1.

Turn the ignition switch OFF → ON.

2.

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

3.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B2910 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 (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Disconnect the headlight assembly RH connector and LH connector.

3.

Disconnect the auto headlight beam leveler CM connector.

4.

Using a tester, measure the resistance between auto headlight beam leveler CM connector and headlight assembly RH connector.

Connector & terminal

(B616) No. 13 — (B487) No. 4:

(B616) No. 14 — (B487) No. 7:

Is the resistance less than 1 Ω?

3

Repair or replace the open circuit of harness.

3. CHECK HARNESS (GROUND SHORT CIRCUIT).

Using a tester, measure the resistance between the auto headlight beam leveler CM connector and chassis ground.

Connector & terminal

(B616) No. 13 — Chassis ground:

(B616) No. 14 — Chassis ground:

Is the resistance 1 MΩ or more?

4

Repair or replace the short circuit of the harness.

4. CHECK HARNESS (SHORT CIRCUIT TO POWER SUPPLY).
1.

Turn the ignition switch to ON.

2.

Using a tester, measure the voltage between auto headlight beam leveler CM connector and chassis ground.

Connector & terminal

(B616) No. 13 (+) — Chassis ground (−):

(B616) No. 14 (+) — Chassis ground (−):

Is the voltage less than 1 V?

5

Repair or replace the short circuit of the harness.

5. CHECK DTC.
1.

Turn the ignition switch to OFF.

2.

Connect all the disconnected connectors.

3.

Turn the ignition switch to ON.

4.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B2910 displayed? (Current malfunction)

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

Replace the headlight assembly RH. LIGHTING SYSTEM>Headlight Assembly

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B2911 STEERING RESPONSIVE HEADLIGHT COMMUNICATION LH

DTC detecting condition:

LIN data no-receive or data abnormal of the SRH actuator is detected for at least one second.

Trouble symptom:

The steering responsive headlight does not operate. SRH indicator blinks.

Wiring diagram:

Headlight beam leveler system WIRING SYSTEM>Headlight Beam Leveler System>WIRING DIAGRAM

- Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

- After replacing the headlight assembly, headlight beam adjustment is required. LIGHTING SYSTEM>Headlight Assembly>ADJUSTMENT

1. CHECK DTC.
1.

Turn the ignition switch OFF → ON.

2.

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

3.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B2911 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 (OPEN CIRCUIT).
1.

Turn the ignition switch to OFF.

2.

Disconnect the headlight assembly LH connector and RH connector.

3.

Disconnect the auto headlight beam leveler CM connector.

4.

Using a tester, measure the resistance between auto headlight beam leveler CM connector and headlight assembly LH connector.

Connector & terminal

(B616) No. 13 — (B477) No. 4:

(B616) No. 14 — (B477) No. 7:

Is the resistance less than 1 Ω?

3

Repair or replace the open circuit of harness.

3. CHECK HARNESS (GROUND SHORT CIRCUIT).

Using a tester, measure the resistance between the auto headlight beam leveler CM connector and chassis ground.

Connector & terminal

(B616) No. 13 — Chassis ground:

(B616) No. 14 — Chassis ground:

Is the resistance 1 MΩ or more?

4

Repair or replace the short circuit of the harness.

4. CHECK HARNESS (SHORT CIRCUIT TO POWER SUPPLY).
1.

Turn the ignition switch to ON.

2.

Using a tester, measure the voltage between auto headlight beam leveler CM connector and chassis ground.

Connector & terminal

(B616) No. 13 (+) — Chassis ground (−):

(B616) No. 14 (+) — Chassis ground (−):

Is the voltage less than 1 V?

5

Repair or replace the short circuit of the harness.

5. CHECK DTC.
1.

Turn the ignition switch to OFF.

2.

Connect all the disconnected connectors.

3.

Turn the ignition switch to ON.

4.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC B2911 displayed? (Current malfunction)

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

Replace the headlight assembly LH. LIGHTING SYSTEM>Headlight Assembly

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B2916 AUTO HEADLAMP LEVELING CIRCUIT

DTC detecting condition:

Detected when internal malfunction occurs in the auto headlight beam leveler CM.

Trouble symptom:

The auto headlight beam leveler does not operate.

Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

For the diagnostic procedure, refer to DTC B2900. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2900 AHL CONTROL

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B2917 AUTO HEADLAMP LEVELING SWITCH STUCK

DTC detecting condition:

Detected when internal malfunction occurs in the auto headlight beam leveler CM.

Trouble symptom:

The auto headlight beam leveler does not operate.

Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

For the diagnostic procedure, refer to DTC B2900. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2900 AHL CONTROL

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B2918 AUTO HEADLAMP LEVELING ACTUATOR MOTOR CIRCUIT

DTC detecting condition:

Detected when internal malfunction occurs in the auto headlight beam leveler CM.

Trouble symptom:

The auto headlight beam leveler does not operate.

Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

For the diagnostic procedure, refer to DTC B2900. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2900 AHL CONTROL

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B2919 AUTO HEADLAMP LEVELING SENSOR SIGNAL

DTC detecting condition:

Detected when internal malfunction occurs in the auto headlight beam leveler CM.

Trouble symptom:

The auto headlight beam leveler does not operate.

Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

For the diagnostic procedure, refer to DTC B2900. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2900 AHL CONTROL

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B291A AUTO HEADLAMP LEVELING SENSOR RANGE/PERFORMANCE

DTC detecting condition:

Detected when internal malfunction occurs in the auto headlight beam leveler CM.

Trouble symptom:

The auto headlight beam leveler does not operate.

Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

For the diagnostic procedure, refer to DTC B2900. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2900 AHL CONTROL

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0074 CONTROL MODULE COMMUNICATION BUS "BODY-CAN" OFF

Detected when CAN line abnormality is detected.

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

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0101 LOST COMMUNICATION WITH TCM

Detected when CAN data from TCM does not arrive.

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

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE

Detected when CAN data (vehicle speed signal) is not received from VDC CM.

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

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0402 INVALID DATA RECEIVED FROM TCM

Detected when data from TCM is abnormal.

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

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0416 INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE

Detected when data (vehicle speed signal) from VDC CM is abnormal.

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

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U1140 LOST COMMUNICATION WITH BODY CONTROL MODULE BODY-CAN

Detected when CAN data from body integrated unit (headlight ON signal) does not arrive.

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

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U1422 INVALID DATA RECEIVED FROM BODY CONTROL MODULE BODY-CAN

Detected when CAN data from body integrated unit (headlight ON signal) is abnormal.

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

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostics with Phenomenon
LIST

Symptoms | Reference
1. The auto headlight beam leveler does not operate. | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > THE AUTO HEADLIGHT BEAM LEVELER DOES NOT OPERATE
2. The steering responsive headlight does not operate. | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > THE STEERING RESPONSIVE HEADLIGHT DOES NOT OPERATE
3. The steering responsive headlight operates in a direction different from the target. | HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostics with Phenomenon>INSPECTION > THE STEERING RESPONSIVE HEADLIGHT OPERATES IN A DIRECTION DIFFERENT FROM THE TARGET

HEADLIGHT / FOGLIGHT(DIAGNOSTICS) > Diagnostics with Phenomenon
INSPECTION
1. THE AUTO HEADLIGHT BEAM LEVELER DOES NOT OPERATE

Detecting condition:

Malfunction of power supply circuit, output circuit, and auto headlight beam leveler CM

Wiring diagram:

Headlight beam leveler system WIRING SYSTEM>Headlight Beam Leveler System>WIRING DIAGRAM

- Before performing diagnosis, check the fuse in this circuit. LIGHTING SYSTEM>Relay and Fuse

- Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

1. CHECK DATA MONITOR.
yes

3

no

2

2. CHECK HARNESS BETWEEN POWER SUPPLY — AUTO HEADLIGHT BEAM LEVELER CM.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

3. CHECK INDICATOR OUTPUT.
yes

5

no

4

4. CHECK DATA MONITOR.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

5. CHECK INDICATOR OUTPUT.
no

10

yes
6. CHECK HEADLIGHT ASSEMBLY (ACTUATOR) DRIVE.
yes

Perform the instructed procedures.

no

7

7. CHECK HEADLIGHT ASSEMBLY (ACTUATOR) OUTPUT.
no

Perform the instructed procedures.

yes
8. CHECK OUTPUT VOLTAGE BETWEEN HEADLIGHT ASSEMBLY (ACTUATOR).
yes

Perform the instructed procedures.

no

9

9. CHECK HARNESS BETWEEN AUTO HEADLIGHT BEAM LEVELER CM AND HEADLIGHT ASSEMBLY (ACTUATOR).
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

10. CHECK DTC.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DATA MONITOR.
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- Control module voltage

Does the data monitor indicate the standard value?

3

2

2. CHECK HARNESS BETWEEN POWER SUPPLY — AUTO HEADLIGHT BEAM LEVELER CM.
1.

Turn the ignition switch to OFF.

2.

Disconnect the auto headlight beam leveler CM connector.

3.

Turn the ignition switch to ON.

4.

Measure the voltage between the auto headlight beam leveler CM connector and chassis ground.

Connector & terminal

(B616) No. 1 (+) — Chassis ground (−):

(B616) No. 3 (+) — Chassis ground (−):

Is the voltage 8 — 16 V?

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

Repair or replace the harness.

3. CHECK INDICATOR OUTPUT.

Turn the ignition switch OFF → ON.

Does the warning indicator turn on for three seconds?

5

4

4. CHECK DATA MONITOR.
1.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- Indicator Signal

2.

Turn the ignition switch to ON.

Is it set as ON for 3 seconds?

Check the combination meter. COMBINATION METER (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

5. CHECK INDICATOR OUTPUT.

Leave the ignition switch to ON for 10 seconds.

Does the warning indicator light go off?

6

10

6. CHECK HEADLIGHT ASSEMBLY (ACTUATOR) DRIVE.
1.

Turn the ignition switch to OFF.

2.

Connect the auto headlight beam leveler CM connector.

3.

Turn the ignition switch to ON, and within 10 seconds, repeat the OFF → Low beam of headlight switch 5 times.

4.

Check that the headlight beam drops once, then returns to normal.

5.

Then, after waiting for 30 seconds or more with the ignition ON, turn the ignition switch to OFF.

Does the headlight beam drop down once, and then return?

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

7

7. CHECK HEADLIGHT ASSEMBLY (ACTUATOR) OUTPUT.
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- Actuator Signal

3.

Turn the ignition switch to ON, and within 10 seconds, repeat the OFF → Low beam of headlight switch 5 times.

4.

Check that the headlight beam drops once, then returns to normal.

5.

Then, after waiting for 30 seconds or more with the ignition ON, turn the ignition switch to OFF.

Does the data monitor indicate the standard value? (Does the value change at 10 — 90 %?)

8

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

8. CHECK OUTPUT VOLTAGE BETWEEN HEADLIGHT ASSEMBLY (ACTUATOR).
1.

Disconnect the auto headlight beam leveler CM connector.

2.

Turn the ignition switch to ON.

3.

Measure the voltage between the auto headlight beam leveler CM connector and chassis ground.

Connector & terminal

(B616) No. 6 (+) — Chassis ground (−):

Is the voltage 8 — 16 V?

Replace the headlight assembly. LIGHTING SYSTEM>Headlight Assembly

9

9. CHECK HARNESS BETWEEN AUTO HEADLIGHT BEAM LEVELER CM AND HEADLIGHT ASSEMBLY (ACTUATOR).
1.

Turn the ignition switch to OFF.

2.

Disconnect the connector of headlight assembly.

3.

Measure the continuity between the auto headlight beam leveler CM connector and headlight assembly (actuator) connector.

Connector & terminal

• Headlight beam leveler RH

(B616) No. 6 — (B620) No. 5:

(B616) No. 7 — (B620) No. 4:

(B616) No. 9 — (B620) No. 3:

• Headlight beam leveler LH

(B616) No. 6 — (B621) No. 5:

(B616) No. 7 — (B621) No. 4:

(B616) No. 9 — (B621) No. 3:

Is there continuity?

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

Repair the open circuit or poor contact of the connector in the harness between headlight assembly and auto headlight beam leveler CM.

10. CHECK DTC.
1.

Turn the ignition switch to ON.

2.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC displayed? (Current malfunction)

Perform the diagnosis for the displayed DTCs. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

2. THE STEERING RESPONSIVE HEADLIGHT DOES NOT OPERATE

Detecting condition:

Malfunction of VDC CM, LAN communication circuit, actuator power supply circuit, reverse signal circuit, switch circuit, actuator, auto headlight beam leveler CM power supply circuit, auto headlight beam leveler CM

Wiring diagram:

Headlight beam leveler system WIRING SYSTEM>Headlight Beam Leveler System>WIRING DIAGRAM

- Before performing diagnosis, check the fuse in this circuit. LIGHTING SYSTEM>Relay and Fuse

- Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

1. CHECK DTC.
yes

Perform the instructed procedures.

no

2

2. CHECK DTC.
yes

Perform the instructed procedures.

no

3

3. CHECK DTC.
yes

Perform the instructed procedures.

no

4

4. CHECK INITIALIZE FUNCTION.
yes

6

no

5

5. CHECK SWIVEL ACTUATOR POWER SUPPLY.
yes

Perform the instructed procedures.

no

12

6. CHECK SRH OFF SWITCH.
yes

8

no

7

7. CHECK SRH OFF SWITCH CIRCUIT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

8. CHECK REVERSE SIGNAL.
yes

Perform the instructed procedures.

no

9

9. CHECK SWIVEL ACTUATOR POWER SUPPLY.
no

11

yes
10. CHECK SWIVEL ACTUATOR POWER SUPPLY CIRCUIT.
no

Perform the instructed procedures.

yes
11. CHECK SRH OPERATION.
yes

Perform the instructed procedures.

no

12

12. CHECK ACTIVE TEST OF SWIVEL ACTUATOR.
yes

14

no

13

13. CHECK AUTO HEADLIGHT BEAM LEVELER CM POWER SUPPLY.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

14. DRIVING CHECK.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.
1.

Turn the ignition switch to OFF.

2.

Start the engine.

3.

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

4.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are any DTCs displayed? (Current malfunction)

Perform the diagnosis for the displayed DTCs. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2

2. CHECK DTC.

Using the Subaru Select Monitor, read all DTCs. LAN SYSTEM (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC of U-code displayed? (Current malfunction)

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

3

3. CHECK DTC.

Read the DTC of [Brake Control System] using the Subaru Select Monitor. BRAKE CONTROL (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is any DTC related to the vehicle speed and steering angle sensor displayed? (Current malfunction)

Perform the diagnosis for the displayed DTCs. BRAKE CONTROL (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

4

4. CHECK INITIALIZE FUNCTION.

Perform the function check (the initialize function) for the steering responsive headlight. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>General Description>INSPECTION > BASIC INSPECTION

Do the left and right headlights operate?

6

- Only one side does not operate: 5

- Both sides do not operate: 6

5. CHECK SWIVEL ACTUATOR POWER SUPPLY.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- Left Steering Responsive Headlight Power Supply Failure

- Right Steering Responsive Headlight Power Supply Failure

Is [FAIL] displayed?

Check the battery and fuse. If no fault is found, check the swivel actuator power supply circuit.

12

6. CHECK SRH OFF SWITCH.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- SRH-OFF SW

Is [ON] displayed when the ignition switch is turned OFF → ON?

8

7

7. CHECK SRH OFF SWITCH CIRCUIT.
1.

Turn the ignition switch to OFF.

2.

Disconnect the SRH OFF switch connector.

3.

Disconnect the auto headlight beam leveler CM connector.

4.

Using a tester, measure the resistance between the auto headlight beam leveler CM connector and the SRH OFF switch connector, and between the SRH OFF switch connector and chassis ground.

Connector & terminal

(B616) No. 10 — (i277) No. 4:

(i277) No. 1 — Chassis ground:

Is the resistance less than 1 Ω?

Repair or replace the open circuit of harness.

Perform unit inspection of the SRH OFF switch. LIGHTING SYSTEM>SRH OFF Switch

8. CHECK REVERSE SIGNAL.
1.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- Shift Position Signal

2.

Place the shift in reverse.

Is [R] displayed when placed in reverse?

Perform the diagnosis for CVT. TRANSMISSION (DIAGNOSTICS)>Basic Diagnostic Procedure When DTC is not stored, check the inhibitor switch or inhibitor switch harness.

9

9. CHECK SWIVEL ACTUATOR POWER SUPPLY.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- Left Steering Responsive Headlight Power Supply Failure

- Right Steering Responsive Headlight Power Supply Failure

Is [FAIL] displayed?

10

11

10. CHECK SWIVEL ACTUATOR POWER SUPPLY CIRCUIT.
1.

Turn the ignition switch to OFF.

2.

Disconnect the headlight assembly connector.

3.

Turn the ignition switch to ON.

4.

Using a tester, measure the voltage between headlight assembly connector and chassis ground.

Connector & terminal

(B487) No. 6 (+) — Chassis ground (−):

(B477) No. 6 (+) — Chassis ground (−):

Is the voltage 8 — 16 V?

11

Check the battery and fuse. If no fault is found, check the swivel actuator power supply circuit.

11. CHECK SRH OPERATION.
1.

Turn the ignition switch to OFF.

2.

Connect all the disconnected connectors.

3.

Drive the vehicle to verify on which side, LH side or RH side, the SRH improper operation occurred.

At night, drive a curve of steering wheel angle approximately 45 degrees or more with vehicle speed at 40 km/h (25 MPH) or more, or drive a curve of steering wheel angle approximately 80 degrees or more with vehicle speed at 15 km/h (9 MPH) or more to check the SRH operation.

Is the improper operation occurring on either left or right side only?

Perform [VSC(VDC) Centering Mode]. VEHICLE DYNAMICS CONTROL (VDC)>VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)>ADJUSTMENT > VDC SENSOR MIDPOINT SETTING MODE

If the fault is not fixed even after the process: 12

12. CHECK ACTIVE TEST OF SWIVEL ACTUATOR.

Using the Subaru Select Monitor, check the following items in the [Active Test] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Active Test

- Right Steering Responsive Headlight

- Left Steering Responsive Headlight

Is the actuator current position value approximately the same as the input value of the actuator control position? (Within 1.2 seconds)

14

- When the value is not the same on one side only, replace the headlight assembly of the side where the same value is not achieved.

- When the value is not the same on both sides, 13

13. CHECK AUTO HEADLIGHT BEAM LEVELER CM POWER SUPPLY.
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- Control module voltage

Is the voltage 8 — 16 V?

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

Check the battery and fuse. If no fault is found, check the auto headlight beam leveler CM power supply circuit.

14. DRIVING CHECK.

Perform the road test to make sure there is no yawing.

Is it yawing?

Check the vehicle alignment. FRONT SUSPENSION>Wheel Alignment

- 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. THE STEERING RESPONSIVE HEADLIGHT OPERATES IN A DIRECTION DIFFERENT FROM THE TARGET

Detecting condition:

Malfunction of VDC CM, LAN communication circuit, actuator power supply circuit, reverse signal circuit, switch circuit, actuator, auto headlight beam leveler CM power supply circuit, auto headlight beam leveler CM, alignment

Wiring diagram:

Headlight beam leveler system WIRING SYSTEM>Headlight Beam Leveler System>WIRING DIAGRAM

- Before performing diagnosis, check the fuse in this circuit. LIGHTING SYSTEM>Relay and Fuse

- Initialization is required after replacing the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE

1. CHECK DTC.
yes

Perform the instructed procedures.

no

2

2. CHECK DTC.
yes

Perform the instructed procedures.

no

3

3. CHECK DTC.
yes

Perform the instructed procedures.

no

4

4. CHECK INITIALIZE FUNCTION.
no

13

yes
5. CHECK INPUT SIGNAL.
no

Perform the instructed procedures.

yes
6. CHECK SWIVEL ACTUATOR TARGET ANGLE.
yes

9

no

7

7. CHECK AUTO HEADLIGHT BEAM LEVELER CM POWER SUPPLY.
no

Perform the instructed procedures.

yes
8. CHECK SWIVEL ACTUATOR POWER SUPPLY CIRCUIT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

9. CHECK SWIVEL ACTUATOR CURRENT ANGLE.
yes

12

no

10

10. CHECK SWIVEL ACTUATOR POWER SUPPLY.
yes

Perform the instructed procedures.

no

11

11. CHECK SWIVEL ACTUATOR POWER SUPPLY CIRCUIT.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

12. CHECK AUTO HEADLIGHT BEAM LEVELER CM POWER SUPPLY.
no

Perform the instructed procedures.

yes
13. CHECK SWIVEL ACTUATOR POWER SUPPLY.
yes

Perform the instructed procedures.

no

14

14. CHECK SWIVEL ACTUATOR POWER SUPPLY CIRCUIT.
no

Perform the instructed procedures.

yes
15. CHECK ACTIVE TEST OF SWIVEL ACTUATOR.
no

Perform the instructed procedures.

yes
16. DRIVING CHECK.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

1. CHECK DTC.
1.

Turn the ignition switch to OFF.

2.

Start the engine.

3.

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

4.

Read the DTC of [Headlight / Foglight] using the Subaru Select Monitor. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Are any DTCs displayed? (Current malfunction)

Perform the diagnosis for the displayed DTCs. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST

2

2. CHECK DTC.

Using the Subaru Select Monitor, read all DTCs. LAN SYSTEM (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is DTC of U-code displayed? (Current malfunction)

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

3

3. CHECK DTC.

Read the DTC of [Brake Control] using the Subaru Select Monitor. BRAKE CONTROL (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

Is any DTC related to the vehicle speed and steering angle sensor displayed?

Perform the diagnosis for the displayed DTCs. BRAKE CONTROL (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

4

4. CHECK INITIALIZE FUNCTION.

Perform the function check (the initialize function) for the steering responsive headlight. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>General Description>INSPECTION > BASIC INSPECTION

Do the left and right headlights operate?

5

- Only one side does not operate: 13

- Both sides do not operate: 12

5. CHECK INPUT SIGNAL.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- Vehicle speed signal

- Steering Angle Signal

Is [Vehicle speed signal] 8 km/h (5 MPH) or less, and [Steering Angle Signal] 8.5 deg or less?

6

Perform the diagnosis for VDC. BRAKE CONTROL (DIAGNOSTICS)>Basic Diagnostic Procedure>PROCEDURE

6. CHECK SWIVEL ACTUATOR TARGET ANGLE.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- Left Steering Responsive Headlight Target Angle

- Right Steering Responsive Headlight Target Angle

Is the target angle 0 degree?

9

7

7. CHECK AUTO HEADLIGHT BEAM LEVELER CM POWER SUPPLY.
1.

Turn the ignition switch to ON.

2.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- Control module voltage

Is the voltage 8 — 16 V?

8

Check the battery and fuse. If no fault is found, check the auto headlight beam leveler CM power supply circuit.

8. CHECK SWIVEL ACTUATOR POWER SUPPLY CIRCUIT.
1.

Turn the ignition switch to OFF.

2.

Disconnect the headlight assembly connector.

3.

Turn the ignition switch to ON.

4.

Using a tester, measure the voltage between headlight assembly connector and chassis ground.

Connector & terminal

(B487) No. 6 (+) — Chassis ground (−):

(B477) No. 6 (+) — Chassis ground (−):

Is the voltage 8 — 16 V?

Replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

Check the battery and fuse. If no fault is found, check the swivel actuator power supply circuit.

9. CHECK SWIVEL ACTUATOR CURRENT ANGLE.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- Left Steering Responsive Headlight Current Angle

- Right Steering Responsive Headlight Current Angle

Is the current angle 0 degree?

12

10

10. CHECK SWIVEL ACTUATOR POWER SUPPLY.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- Left Steering Responsive Headlight Power Supply Failure

- Right Steering Responsive Headlight Power Supply Failure

Is [FAIL] displayed?

Check the battery and fuse. If no fault is found, check the swivel actuator power supply circuit.

11

11. CHECK SWIVEL ACTUATOR POWER SUPPLY CIRCUIT.
1.

Turn the ignition switch to OFF.

2.

Disconnect the headlight assembly connector.

3.

Turn the ignition switch to ON.

4.

Using a tester, measure the voltage between headlight assembly connector and chassis ground.

Connector & terminal

(B487) No. 6 (+) — Chassis ground (−):

(B477) No. 6 (+) — Chassis ground (−):

Is the voltage 8 — 16 V?

Replace the headlight assembly. LIGHTING SYSTEM>Headlight Assembly

Check the battery and fuse. If no fault is found, check the swivel actuator power supply circuit.

12. CHECK AUTO HEADLIGHT BEAM LEVELER CM POWER SUPPLY.
1.

Turn the ignition switch to OFF.

2.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- Control module voltage

Is the voltage 8 — 16 V?

13

Check the battery and fuse. If no fault is found, check the auto headlight beam leveler CM power supply circuit.

13. CHECK SWIVEL ACTUATOR POWER SUPPLY.

Using the Subaru Select Monitor, check the following items in the [Data monitor] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Data Monitor

- Left Steering Responsive Headlight Power Supply Failure

- Right Steering Responsive Headlight Power Supply Failure

Is [FAIL] displayed?

Check the battery and fuse. If no fault is found, check the swivel actuator power supply circuit.

14

14. CHECK SWIVEL ACTUATOR POWER SUPPLY CIRCUIT.
1.

Turn the ignition switch to OFF.

2.

Disconnect the headlight assembly connector.

3.

Turn the ignition switch to ON.

4.

Using a tester, measure the voltage between headlight assembly connector and chassis ground.

Connector & terminal

(B487) No. 6 (+) — Chassis ground (−):

(B477) No. 6 (+) — Chassis ground (−):

Is the voltage 8 — 16 V?

15

Check the battery and fuse. If no fault is found, check the swivel actuator power supply circuit.

15. CHECK ACTIVE TEST OF SWIVEL ACTUATOR.

Using the Subaru Select Monitor, check the following items in the [Active Test] of [Headlight / Foglight]. HEADLIGHT / FOGLIGHT(DIAGNOSTICS)>Active Test

- Right Steering Responsive Headlight

- Left Steering Responsive Headlight

Is the actuator current position value approximately the same as the input value of the actuator control position? (Within 1.2 seconds)

16

- When the value is not the same on one side only, replace the headlight assembly of the side where the same value is not achieved. LIGHTING SYSTEM>Headlight Assembly

- When the value is not the same on both sides, replace the auto headlight beam leveler CM. LIGHTING SYSTEM>Auto Headlight Beam Leveler Control Module

16. DRIVING CHECK.

Perform the road test to make sure there is no yawing.

Is it yawing?

Check the vehicle alignment. FRONT SUSPENSION>Wheel Alignment

- 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.