Model Without SRH

1. Turn the ignition switch to ON.
2. Read DTCs of the following items using the Subaru Select Monitor. Ref. to LAN SYSTEM (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)
   • [Body Control]
   • [Front Relay Control Module]

Is DTC displayed?

Yes  : Perform the diagnosis for the displayed DTCs.

• [Body Control]: Ref. to BODY CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST
• [Front Relay Control Module]: Ref. to FRONT RELAY CONTROL MODULE (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST

No  : Go to  2.

Using the Subaru Select Monitor, display the following items in the [Data monitor] of [Body Control]. Ref. to COMMON (DIAGNOSTICS)>DATA MONITOR

• [IGN voltage]
• [Shift Position]
• [EPB operating status]
• [P SW]
• [Lighting II Switch Input]

Is the input signal normal?

Yes  : Go to  3.

No  : Check the defective part.

1. Start the engine.
2. Turn the lighting switch to the OFF position.
3. Release the parking brake.

Does the daytime running light illuminate/go off when the parking brake is operated [ON] ←→ [OFF]?

Yes  : Check the headlight assembly and replace it if defective.

No  : Go to  4.

1. Turn the ignition switch to OFF.
2. Disconnect the front relay control module and headlight connector.
3. Check the harness between the front relay control module and the headlight.

   Connector & terminal 

   Headlight RH 

   (B68) No. 2 (+) - (B121) No. 1 (-):

   Headlight LH 

   (B69) No. 8 (+) - (B122) No. 1 (-):

Is harness normal?

Yes  : Go to  5.

No  : Repair or replace the defective part.

1. Disconnect the body integrated unit and headlight connector.
2. Check the harness between the body integrated unit and headlight.

   Connector & terminal 

   Headlight RH 

   (B121) No. 9 (+) - (B72) No. 5 (-):

   Headlight LH 

   (B122) No. 9 (+) - (B72) No. 5 (-):

Is harness normal?

Yes  : Go to  6.

No  : Repair or replace the defective part.

1. Disconnect the headlight connector.
2. Apply battery voltage to the DRL terminal input of the headlight unit.
   CAUTION:

   When applying battery voltage, do not mix up the positive (+) side and the negative (-) side. Incorrect polarity connection may cause internal LED damage. 

   Connector & terminal 

   Headlight RH 

   (B121) No. 1 (+) - (B121) No. 9 (-):

   Headlight LH 

   (B122) No. 1 (+) - (B122) No. 9 (-):

Does the daytime running light illuminate?

Yes  : Replace the body integrated unit. Ref. to BODY CONTROL/COMMUNICATION SYSTEM>BODY INTEGRATED UNIT

No  : Replace the headlight. Ref. to LIGHTING SYSTEM>HEADLIGHT ASSEMBLY