Check Daytime Running Light System (Led Headlight Model)

1. 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.
2. 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.
3. CHECK BODY INTEGRATED UNIT. 

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

   NOTE: For detailed operation procedures, refer to "Application help".

   Is DTC displayed?

   • Yes  : Perform the diagnosis according to DTC. Ref. to BODY CONTROL(DIAGNOSTICS)>List of Diagnostic Trouble Code (DTC)>LIST .
   • No  : Go to  4.
4. CHECK BODY INTEGRATED UNIT. 

   Display the [Daytime Running Light(DRL) Setting for North America] data using Subaru Select Monitor.

   Is the setting in the [Alternate DRL System]?

   • Yes  : Go to  5.
   • No  : Set the setting to the [Alternate DRL System].
5. CHECK CURRENT DATA. 

   Display the following items using Subaru Select Monitor.

   • [Parking Position Switch]
   • [Shift Position]
   • [Lighting II Switch Input]

   Is the input signal normal?

   • Yes  : Go to  6.
   • No  : Check the defective part.
6. CHECK CURRENT DATA. 
   1. Start the engine.
   2. Release the parking brake, and set the shift position in any ranges other than P.
   3. Display the data of [Daytime Running Light (Alternate System) Output for North America] using Subaru Select Monitor.

   Does the [Daytime Running Light (Alternate System) Output for North America] switch between OFF ON when the lighting switch is switched between OFF position II (HEAD) position?

   • Yes  : Go to  7.
   • No  : Replace the body integrated unit. Ref. to SECURITY AND LOCKS>Body Integrated Unit .
7. CHECK DAYTIME RUNNING LIGHT ILLUMINATION. 
   1. Disconnect the headlight connector (gray).
   2. Apply battery voltage to the DRL terminal input of the headlight unit.

   Terminals 

   NO. 1 (+) - NO. 5 (-):

   Does the daytime running light illuminate?

   • Yes  : Go to  8.
   • No  : Replace the headlight.
8. CHECK HARNESS. 
   1. Disconnect the connectors of body integrated unit, daytime running light relay and headlight.
   2. Check each harness.

Is harness normal?

• Yes  : Replace the body integrated unit. Ref. to SECURITY AND LOCKS>Body Integrated Unit .
• No  : Repair or replace the harness.