HEADLIGHT / FOGLIGHT(DIAGNOSTICS)
LT(diag)
  1. Basic Diagnostic Procedure
  2. Check List for Interview
  3. General Description
  4. Electrical Component Location
  5. Control Module I/O Signal
  6. Inspection Mode
  7. Diagnostic Procedure for Subaru Select Monitor Communication
  8. Data Monitor
  9. Freeze Frame Data
  10. Active Test
  11. Customize
  12. Diagnostic Trouble Code (DTC)
  13. Diagnostic Procedure with Diagnostic Trouble Code (DTC)
  14. Diagnostics with Phenomenon
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 (3.3ft) 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
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

i288 i288 1 9 8 16 2 10 7 15 3 11 6 14 4 12 5 13 2 16 15 14 6 8 16 1 3 4 5 B616 5 1 6 2 7 4 3 16 15 14 13 12 11 10 9 8 B616 5 4 3 2 1 B491 LI-10682 B491 J/C 1 DATA LINK CONNECTOR REF. TO CAN COMMUNICATION SYSTEM REF. TO ENGINE ELECTRICAL SYSTEM FB-53F/B FUSE NO. 18(IG) FB-14F/B FUSE NO. 14(B) AUTO HEADLIGHT BEAM LEVELER CM FB-47F/B FUSE NO. 19(IG) MB-17M/B FUSE NO. 11(B)
 

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
 
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
 
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
 
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:

B616 12 2 11 5 1 6 2 7 4 3 16 15 14 13 12 11 10 9 8 B616 7 6 9 8 1 2 4 3 10 5 B487 B477 A: A: 5 4 3 2 1 B491 B491 J/C 1 1 5 3 B477 A: 1 5 3 B487 A: LI-10737 FRONT COMBINATION LIGHT RH (HEADLIGHT) FRONT COMBINATION LIGHT LH (HEADLIGHT) MB-35M/B FUSE NO. 3(B) MB-36M/B FUSE NO. 4(B) AUTO HEADLIGHT BEAM LEVELER CM
 
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:

B616 12 2 11 5 1 6 2 7 4 3 16 15 14 13 12 11 10 9 8 B616 7 6 9 8 1 2 4 3 10 5 B487 B477 A: A: 5 4 3 2 1 B491 B491 J/C 1 1 5 3 B477 A: 1 5 3 B487 A: LI-10737 FRONT COMBINATION LIGHT RH (HEADLIGHT) FRONT COMBINATION LIGHT LH (HEADLIGHT) MB-35M/B FUSE NO. 3(B) MB-36M/B FUSE NO. 4(B) AUTO HEADLIGHT BEAM LEVELER CM
 
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

B616 A: 5 1 6 2 7 4 3 16 15 14 13 12 11 10 9 8 B616 7 6 9 8 1 2 4 3 10 5 B487 B477 A: 13 14 *1 B619 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 B477 A: 4 7 B487 A: 4 7 *1 *1 *1 J/C B619 LI-10761 : TERMINAL No. OPTIONAL ARRANGEMENT AMONG 5, 6 AND 7 FRONT COMBINATION LIGHT LH FRONT COMBINATION LIGHT RH AUTO HEADLIGHT BEAM LEVELER CM
 
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

B616 A: 5 1 6 2 7 4 3 16 15 14 13 12 11 10 9 8 B616 7 6 9 8 1 2 4 3 10 5 B487 B477 A: 13 14 *1 B619 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 B477 A: 4 7 B487 A: 4 7 *1 *1 *1 J/C B619 LI-10761 : TERMINAL No. OPTIONAL ARRANGEMENT AMONG 5, 6 AND 7 FRONT COMBINATION LIGHT LH FRONT COMBINATION LIGHT RH AUTO HEADLIGHT BEAM LEVELER CM
 
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

B616 A: 5 1 6 2 7 4 3 16 15 14 13 12 11 10 9 8 B616 7 6 9 8 1 2 4 3 10 5 B487 B477 A: 13 14 *1 B619 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 B477 A: 4 7 B487 A: 4 7 *1 *1 *1 J/C B619 LI-10761 : TERMINAL No. OPTIONAL ARRANGEMENT AMONG 5, 6 AND 7 FRONT COMBINATION LIGHT LH FRONT COMBINATION LIGHT RH AUTO HEADLIGHT BEAM LEVELER CM
 
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

B616 A: 5 1 6 2 7 4 3 16 15 14 13 12 11 10 9 8 B616 7 6 9 8 1 2 4 3 10 5 B487 B477 A: 13 14 *1 B619 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 B477 A: 4 7 B487 A: 4 7 *1 *1 *1 J/C B619 LI-10761 : TERMINAL No. OPTIONAL ARRANGEMENT AMONG 5, 6 AND 7 FRONT COMBINATION LIGHT LH FRONT COMBINATION LIGHT RH AUTO HEADLIGHT BEAM LEVELER CM
 
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

B616 6 1 3 7 9 2 5 1 6 2 7 4 3 16 15 14 13 12 11 10 9 8 B616 B491 J/C 1 B620 B: B487 A: B477 A: B621 B: 5 4 3 2 1 B491 7 6 9 8 1 2 4 3 10 5 B487 B477 A: A: 6 3 5 2 4 1 B621 B620 B: B: 6 5 4 3 6 5 4 3 LI-10740 FRONT COMBINATION LIGHT LH FRONT COMBINATION LIGHT RH AUTO HEADLIGHT BEAM LEVELER CM FB-53F/B FUSE NO. 18(IG) FB-14F/B FUSE NO. 14(B)
 
1. CHECK DATA MONITOR.
yes
no
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
no
4. CHECK DATA MONITOR.
yes

Perform the instructed procedures.

no

Perform the instructed procedures.

5. CHECK INDICATOR OUTPUT.
no
yes
6. CHECK HEADLIGHT ASSEMBLY (ACTUATOR) DRIVE.
yes

Perform the instructed procedures.

no
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. 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

B616 6 1 3 7 9 2 5 1 6 2 7 4 3 16 15 14 13 12 11 10 9 8 B616 5 4 3 2 1 B491 4 3 2 1 i277 B491 J/C 1 B620 B: B487 A: B477 A: B621 B: 7 6 9 8 1 2 4 3 10 5 B487 B477 A: A: i82 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 6 3 5 2 4 1 B621 B620 B: B: * 1 * 2 6 5 4 3 6 5 4 3 10 4 1 i277 * 1 * 1 * 2 * 2 J/C i82 B129 i215 3 LI-10741 SRH OFF SWITCH : TERMINAL No. OPTIONAL ARRANGEMENT AMONG 10, 11, 12, 13, 14, 15, 16, 17 AND 18 : TERMINAL No. OPTIONAL ARRANGEMENT AMONG 1, 2, 3, 4, 5, 6, 7, 8 AND 9 FRONT COMBINATION LIGHT LH FRONT COMBINATION LIGHT RH AUTO HEADLIGHT BEAM LEVELER CM FB-53F/B FUSE NO. 18(IG) FB-14F/B FUSE NO. 14(B)
 
1. CHECK DTC.
yes

Perform the instructed procedures.

no
2. CHECK DTC.
yes

Perform the instructed procedures.

no
3. CHECK DTC.
yes

Perform the instructed procedures.

no
4. CHECK INITIALIZE FUNCTION.
yes
no
5. CHECK SWIVEL ACTUATOR POWER SUPPLY.
yes

Perform the instructed procedures.

no
6. CHECK SRH OFF SWITCH.
yes
no
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. CHECK SWIVEL ACTUATOR POWER SUPPLY.
no
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. CHECK ACTIVE TEST OF SWIVEL ACTUATOR.
yes
no
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

B616 6 1 3 7 9 2 5 1 6 2 7 4 3 16 15 14 13 12 11 10 9 8 B616 5 4 3 2 1 B491 4 3 2 1 i277 B491 J/C 1 B620 B: B487 A: B477 A: B621 B: 7 6 9 8 1 2 4 3 10 5 B487 B477 A: A: i82 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 6 3 5 2 4 1 B621 B620 B: B: * 1 * 2 6 5 4 3 6 5 4 3 10 4 1 i277 * 1 * 1 * 2 * 2 J/C i82 B129 i215 3 LI-10741 SRH OFF SWITCH : TERMINAL No. OPTIONAL ARRANGEMENT AMONG 10, 11, 12, 13, 14, 15, 16, 17 AND 18 : TERMINAL No. OPTIONAL ARRANGEMENT AMONG 1, 2, 3, 4, 5, 6, 7, 8 AND 9 FRONT COMBINATION LIGHT LH FRONT COMBINATION LIGHT RH AUTO HEADLIGHT BEAM LEVELER CM FB-53F/B FUSE NO. 18(IG) FB-14F/B FUSE NO. 14(B)
 
1. CHECK DTC.
yes

Perform the instructed procedures.

no
2. CHECK DTC.
yes

Perform the instructed procedures.

no
3. CHECK DTC.
yes

Perform the instructed procedures.

no
4. CHECK INITIALIZE FUNCTION.
no
yes
5. CHECK INPUT SIGNAL.
no

Perform the instructed procedures.

yes
6. CHECK SWIVEL ACTUATOR TARGET ANGLE.
yes
no
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
no
10. CHECK SWIVEL ACTUATOR POWER SUPPLY.
yes

Perform the instructed procedures.

no
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. 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

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.