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Check Door Switch

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.
Step Check Yes No
1 CHECK DOOR SWITCH CIRCUIT. 
Measure the voltage between the body integrated unit harness connector terminal and chassis ground.
Connector & terminal 
Front door RH: 
(i84) No. 32 (+) - Chassis ground (-): 
Front door LH: 
(i84) No. 19 (+) - Chassis ground (-): 
Rear door RH: 
(i84) No. 18 (+) - Chassis ground (-): 
Rear door LH: 
(i84) No. 31 (+) - Chassis ground (-): 
Rear gate: 
(i84) No. 17 (+) - Chassis ground (-): 
Is the voltage 0 V when each door or rear gate is opened? Go to step 2.  Go to step 3. 
2 CHECK DOOR SWITCH CIRCUIT. 
Measure the voltage between the body integrated unit harness connector terminal and chassis ground.
Connector & terminal 
Front door RH: 
(i84) No. 32 (+) - Chassis ground (-): 
Front door LH: 
(i84) No. 19 (+) - Chassis ground (-): 
Rear door RH: 
(i84) No. 18 (+) - Chassis ground (-): 
Rear door LH: 
(i84) No. 31 (+) - Chassis ground (-): 
Rear gate: 
(i84) No. 17 (+) - Chassis ground (-): 
Is the voltage 10 V or more when each door or rear gate is closed? The door switch is OK. Go to step 3. 
3 CHECK DOOR SWITCH. 
  1. Disconnect the door switch harness connector (R9, R12, R16, R22).
  2. Measure the resistance between door switch terminals.

Connector & terminal 
(R12) Front RH door switch: 
(R9) Front LH door switch: 
(R16) Rear RH door switch: 
(R22) Rear LH door switch: 
No. 1 - No. 3: 
Rear gate latch switch: 
(D140) No. 3 - No. 4: 
Is the resistance 1 MΩ or more when door switch is pushed? Go to step 4.  Replace the door switch.
4 CHECK DOOR SWITCH. 
Measure the resistance between door switch terminals.
Connector & terminal 
(R12) Front RH door switch: 
(R9) Front LH door switch: 
(R16) Rear RH door switch: 
(R22) Rear LH door switch: 
No. 1 - No. 3: 
Rear gate latch switch: 
(D140) No. 3 - No. 4: 
Is the resistance less than 1 Ω when door switch is released? Check the harness for open or short between body integrated unit and door switch. Replace the door switch.