Check Daytime Running Light System (Halogen Headlight Model)

1. CHECK FUSE. 
   1. Turn the ignition switch to OFF.
   2. Check the headlight HI fuse.

   Is the fuse OK?

   • Yes  : Go to  2.
   • No  : Replace the fuse.
2. CHECK RELAY. 

   Check the headlight HI relay inside the main fuse box. Ref. to LIGHTING SYSTEM>Relay and Fuse>INSPECTION .

   Is the relay OK?

   • Yes  : Go to  3.
   • No  : Replace the relay.
3. 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? Ref. to SECURITY AND LOCKS>Body Integrated Unit .

   • Yes  : Go to  4.
   • No  : Check the combination switch (light) and headlight bulb.
4. 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  5.
5. CHECK BODY INTEGRATED UNIT. 

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

   Is the setting in the [High Beam Dimming System]?

   • Yes  : Go to  6.
   • No  : Set the setting to the [High Beam Dimming System].
6. 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  7.
   • No  : Check the defective part.
7. CHECK CURRENT DATA. 
   1. Start the engine.
   2. Release the parking brake, and set the shift position in any ranges other than P.
   3. Using the Subaru Select Monitor, display the data of [DRL Cancel Output].

   Does the [DRL Cancel Output] switch between OFF ON when the lighting switch is switched between OFF position II (HEAD) position?

   • Yes  : Go to  8.
   • No  : Replace the body integrated unit. Ref. to SECURITY AND LOCKS>Body Integrated Unit .
8. CHECK RELAY (HEADLIGHT RELAY UNIT). 

   Check the faulty daytime running light & high beam relay units. Ref. to LIGHTING SYSTEM>Relay and Fuse>INSPECTION>CHECK DAYTIME RUNNING LIGHT & HIGH BEAM RELAY .

   Is the relay OK?

   • Yes  : Go to  9.
   • No  : Remove the headlight and replace the daytime running light relay unit.
9. CHECK DAYTIME RUNNING LIGHT RESISTOR. 
   1. Turn the ignition switch to OFF.
   2. Check the daytime running light resistor. Ref. to LIGHTING SYSTEM>Day Time Running Resistor>INSPECTION .

   Does the daytime running light resistor normal?

   • Yes  : Go to  10.
   • No  : Replace the daytime running light resistor.
10. CHECK HARNESS. 
    1. Disconnect the connectors of body integrated unit, daytime running light relay unit, daytime running light resistor, 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.