Check Daytime Running Light System (Led Headlight Model)

1. Turn the ignition switch to OFF.
2. Check the fuse on the upstream of the daytime running light relay.

Is the fuse OK?

Yes  : Go to  2.

No  : Replace the fuse.

Check the daytime running light relay. Ref. to LIGHTING SYSTEM>RELAY AND FUSE>INSPECTION .

Is the relay OK?

Yes  : Go to  3.

No  : Replace the relay.

Read the DTC of body integrated unit using Subaru Select Monitor. Ref. to OPERATION .

Is DTC displayed?

Yes  Perform the diagnosis according to the DTC. OPERATION .

No  Go to  4.

Display the following items using Subaru Select Monitor. Ref. to DATA MONITOR .

• [EPB operating status]
• [Shift Position]
• [Lighting II Switch Input]

Is the input signal normal?

Yes  : Go to  5.

No  : Check the defective part.

1. Start the engine.
2. Release the parking brake and place the shift position to other than "P" range.
3. Display the data of [Daytime Running Light Alternate System (R)Output] and [Daytime Running Light Alternate System (L)Output] using Subaru Select Monitor. Ref. to DATA MONITOR .

   Do the displays of [Daytime Running Light Alternate System (R)Output] and [Daytime Running Light Alternate System (L)Output] switch between [OFF] ?? [ON] when the lighting switch is switched from the OFF position to the II (HEAD) position?

   Yes  Go to  6.

   Yes  Replace the body integrated unit. Ref. to BODY INTEGRATED UNIT .

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

   Terminals 

   NO. 12 (+) - NO. 16 (-):

Does the daytime running light illuminate?

Yes  : Go to  7.

No  : Replace the headlight. Headlight Assembly .

1. Disconnect the connectors of body integrated unit, daytime running light relay and headlight.
2. Check each harness.

   Connector and terminal. 

   (B287) No. 5 - (B225) No. 14:

   (i81) No. 24 - (B225) No. 18:

   (B583) No. 3 - (B225) No. 18:

   (B487) No. 12 - (B225) No. 17:

   (B477) No. 12 - (B225) No. 21:

Is harness normal?

Yes  : Replace the body integrated unit. Ref. to SECURITY AND LOCKS>BODY INTEGRATED UNIT .

No  : Repair or replace the harness.