2012 Subaru Outback Base, Standard TransFACTORY OEM SERVICE PROCEDURE

Daytime Running Light Module Check

WARNING: This page is about a different car, the 2011 Subaru Tribeca. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE CHART

Step Check Yes No
1 CHECK POWER SUPPLY CIRCUIT. 
  1. Turn the ignition switch to ON.
  2. Measure the voltage between the daytime running light module terminal and chassis ground.

    Connector & terminal 

    (B96) No. 2 (+) - Chassis ground (-): 

    (B242) No. 6 (+) - Chassis ground (-): 

 Is the voltage battery voltage? Go to step 2.  Check the fuse and the power supply circuit.
2 CHECK GROUND CIRCUIT. 
  1. Disconnect the daytime running light module connector.
  2. Measure the resistance between the daytime running light module connector and chassis ground.

    Connector & terminal 

    (B242) No. 10 (+) - Chassis ground (-): 

 Is the resistance less than 1 Ω? Go to step 3.  Check the ground circuit.
3 CHECK THE PARKING SIGNAL. 
  1. Connect the daytime running light module connector.
  2. Measure the resistance between the terminal and chassis ground when pulling parking brake lever and releasing.

    Connector & terminal 

    (B96) No. 4 (+) - Chassis ground (-): 

 Does the voltage change to 0 <=> battery voltage? Go to step 4.  Check the parking brake switch circuit.
4 CHECK THE STARTER SIGNAL. 
Turn the ignition switch to ON <=> Starter and measure the voltage of terminal.
Connector & terminal 
(B96) No. 7 (+) - Chassis ground (-): 		 Does the voltage change to 0 <=> battery voltage? Go to step 5.  Check the starter switch circuit.
5 CHECK THE HEADLIGHT SWITCH SIGNAL. 
Turn the headlight switch to LO <=> OFF and measure the voltage of terminal.
Connector & terminal 
(B242) No. 2 (+) - Chassis ground (-): 		 Does the voltage change to 0 <=> battery voltage? Go to step 6.  Check the combination switch and the headlight LO circuit.
6 CHECK THE HEADLIGHT SWITCH SIGNAL. 
Turn the headlight switch to HI <=> OFF and measure the voltage of terminal.
Connector & terminal 
(B96) No. 1 (+) - Chassis ground (-): 		 Does the voltage change to 0 <=> battery voltage? Go to step 7.  Check the combination switch and the headlight HI circuit.
7 CHECK THE HEADLIGHT SIGNAL. 
  1. Turn the ignition switch to ON.
  2. Turn the headlight from HI to ON/OFF and measure the voltage of terminal.

    Connector & terminal 

    (B242) No. 5 (+) - Chassis ground (-): 

    (B96) No. 3 (+) - Chassis ground (-): 

 Does the voltage change to 0 <=> battery voltage? Go to step 8.  Check the headlight HI circuit.
8 CHECK THE HEADLIGHT SIGNAL. 
  1. Turn the ignition switch to ON.
  2. Measure the voltage of terminal on passing of headlight.

    Connector & terminal 

    (B242) No. 4 (+) - Chassis ground (-): 

 Does the voltage change to 0 <=> battery voltage? If the above test is OK, replace the daytime running light module. Check the headlight HI circuit.
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