Check Door Switch

Wiring diagram: 

Door lock control system Ref. to WIRING SYSTEM>DOOR LOCK CONTROL SYSTEM>WIRING DIAGRAM

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK DATA MONITOR  .
   1. Turn the ignition switch to ON.
   2. Using the Subaru Select Monitor, display the following items in the [Data monitor] of [Body Control]. Ref. to COMMON (DIAGNOSTICS)>DATA MONITOR
      • [Driver's door SW input]
      • [P-door SW input]
      • [Rear right door SW input]
      • [Rear left door SW input]
      • [R Gate SW input]

   Does the display switch between [OFF] ←→ [ON] when each door or trunk lid is opened/closed?

   Yes  : The door switch or the trunk lid latch switch is normal.

   No  : Go to  2.

2. CHECK HARNESS  .
   1. Turn the ignition switch to OFF.
   2. Disconnect the connector of body integrated unit.
   3. Disconnect the connector of the door switch or the trunk lid latch switch that does not show any change on the display.
   4. Check the harness between body integrated unit and defective switch.

      Connector & terminal 

      Front door LH 

      (i82) No. 39 - (L101) No. 2:

      Front door RH 

      (i82) No. 13 - (R101) No. 2:

      Rear door LH 

      (i82) No. 14 - (L102) No. 2:

      Rear door RH 

      (i82) No. 27 - (R102) No. 2:

      Trunk lid 

      (i82) No. 15 - (Td47) No. 3:

   Is harness normal?

   Yes  : Go to  3.

   No  : Repair or replace the defective part.

3. CHECK HARNESS  .

   Measure the resistance between the faulty switch connector and chassis ground.

   Connector & terminal 

   Front door LH 

   (L101) No. 1 - Chassis ground:

   Front door RH 

   (R101) No. 1 - Chassis ground:

   Rear door LH 

   (L102) No. 1 - Chassis ground:

   Rear door RH 

   (R102) No. 1 - Chassis ground:

   Trunk lid 

   (Td47) No. 2 - Chassis ground:

   Is the resistance less than 10 Ω?

   Yes  : Go to  4.

   No  : Repair or replace the defective part.

4. CHECK DOOR SWITCH  .

   Measure the resistance between faulty switch terminals.

   Terminals 

   Front LH door switch 

   No. 2 - No. 1:

   Front RH door switch 

   No. 2 - No. 1:

   Rear LH door switch 

   No. 2 - No. 1:

   Rear RH door switch 

   No. 2 - No. 1:

   Trunk lid 

   No. 3 - No. 2:

   Is the resistance 1 MΩ or more when the door switch is pushed and the trunk lid is closed?

   Yes  : Replace the body integrated unit. Ref. to BODY CONTROL/COMMUNICATION SYSTEM>BODY INTEGRATED UNIT

   No  : Replace the following faulty parts.

   • Door switches: Ref. to LIGHTING SYSTEM>DOOR SWITCH
   • Trunk lid latch & actuator assembly: Ref. to SECURITY AND LOCKS>TRUNK LID LATCH AND ACTUATOR ASSEMBLY