Check Trunk Opener Switch Circuit

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 Subaru Select Monitor, display [R Gate Release SW input] in [Data monitor] of [Body Control]. Ref. to COMMON (DIAGNOSTICS)>DATA MONITOR .

   Does the display switch between [OFF] ←→ [ON] when the trunk opener switch is operated?

   Yes:  The trunk opener switch is normal.

   No:  Go to  2.

2. CHECK HARNESS  .
   1. Turn the ignition switch to OFF.
   2. Disconnect the connectors of body integrated unit and trunk opener switch.
   3. Check the harness between body integrated unit and trunk opener switch.

      Connector & terminal 

      (i82) No. 6 - (i140) No. 1: 

   Is harness normal?

   Yes:  Go to  3.

   No:  Repair or replace the defective part.

3. CHECK HARNESS  .

   Measure the resistance between trunk opener switch connector and chassis ground.

   Connector & terminal 

   (i140) No. 4 - Chassis ground: 

   Is the resistance less than 10 Ω?

   Yes:  Go to  4.

   No:  Repair or replace the defective part.

4. CHECK TRUNK OPENER SWITCH  .

   Check the trunk opener button. Ref. to SECURITY AND LOCKS>TRUNK OPENER SWITCH>INSPECTION .

   Is the trunk opener switch normal?

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

   No:  Replace the trunk opener switch. Ref. to SECURITY AND LOCKS>TRUNK OPENER SWITCH .