Daytime Running Light Module Check

WARNING: This page is about a different car, the 2015 Subaru Outback and 2015 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTICS PROCEDURE

Step	Check	Yes	No
1 CHECK BODY INTEGRATED UNIT . Read the DTC of body integrated unit using Subaru Select Monitor. NOTE: For detailed procedures, refer to "PC application help for Subaru Select Monitor".	Is DTC displayed?	Perform the diagnosis according to DTC.	Go to step 2 .
2 CHECK CURRENT DATA . Display the following items using Subaru Select Monitor. «EPB Operating status» «Shift position» «Lighting II Switch Input»	Is the input signal normal?	Go to step 3 .	Check the defective part.
3 CHECK FUSE . Check the headlight HI fuse (LH/RH). <Ref. to RELAY AND FUSE .>	Is the fuse OK?	Go to step 4 .	Replace the fuse.
4 CHECK HEADLIGHT ILLUMINATION . Turn the ignition to ON. Turn the lighting switch to the switch 2 (HEAD) position. Turn the dimmer & passing switch to the switch UP position.	Does the headlight (high beam) illuminate?	Go to step 5 .	Check the combination switch (light) and headlight bulb.
5 CHECK RELAY . Check the daytime running light relay (LH/RH) and headlight HI relay (LO/HI). <Ref. to RELAY AND FUSE .>	Is each relay normal?	Go to step 6 .	Replace the relay.
6 CHECK DAYTIME RUNNING RESISTOR . Check the daytime running resistor. <Ref. to INSPECTION , Day Time Running Resistor.>	Does the daytime running resistor normal?	Go to step 7 .	Replace the daytime running resistor.
7 CHECK HARNESS . Disconnect the connectors of body integrated unit, daytime running relay, daytime running resistor, and headlight. Check each harness.	Is harness normal?	Replace the body integrated unit. <Ref. to BODY INTEGRATED UNIT .>	Repair or replace the harness.