Check Daytime Running Light System (Led Headlight Model)

CHECK FUSE.
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 RELAY.
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.
CHECK HEADLIGHT ILLUMINATION.
1. Turn the ignition switch to ON.
2. Turn the lighting switch to the switch II (HEAD) position.
3. Turn the dimmer & passing switch to the switch UP position.
Does the headlight (high beam) illuminate?

Yes : Go to 4.

No : Check the combination switch (light) and headlight bulb.
CHECK BODY INTEGRATED UNIT.
Read the DTC of body integrated unit using Subaru Select Monitor.

NOTE: For detailed operation procedures, refer to "Help" of application.

Is DTC displayed?

Yes : Perform the diagnosis according to DTC. Ref. to BODY CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)>OPERATION .

No : Go to 5.
CHECK CURRENT DATA.
Display the following items using Subaru Select Monitor.
- [Parking Brake Switch Input]
- [Shift Position]
- [Lighting II Switch Input]
Is the input signal normal?

Yes : Go to 6.

No : Check the defective part.
CHECK DAYTIME RUNNING LIGHT ILLUMINATION.
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.
CHECK HARNESS.
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:
  
  (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.