2012 Subaru Outback Base, Standard TransFACTORY OEM SERVICE PROCEDURE

Check Door Switch

Step Check Yes No
1 CHECK INPUT CIRCUIT. 
  1. Prepare the Subaru Select Monitor kit.
  2. Turn the ignition switch to ON (engine OFF) and run the "PC application for Subaru Select Monitor".
  3. On << System Selection Menu >> display, select {Integ. unit mode}.
  4. Select the {Current Data Display}.
  5. Select the {Driver's door SW input}, {P-door SW input}, {Rear right door SW input}, {Rear left door SW input}, and {R Gate SW input}.
 Does the display switch between OFF ↔ ON when each door or rear gate, trunk lid is opened/closed? The door switches, trunk lid latch switch or rear gate latch switch are normal. Go to step 2  .
2 CHECK HARNESS. 
  1. Disconnect the body integrated unit connector.
  2. Disconnect the door switch connector that the display does not change.
  3. Check the harness between body integrated unit connector and defective door switch connector.

    Connector & terminal 

    Front door RH 

    (i84) No. 13 - (R12) No. 2: 

    Front door LH 

    (i84) No. 14 - (R9) No. 2: 

    Rear door RH 

    (i84) No. 25 - (R16) No. 2: 

    Rear door LH 

    (i84) No. 24 - (R22) No. 2: 

    Trunk lid 

    (i84) No. 33 - (R186) No. 3: 

    Rear gate 

    (i84) No. 33 - (D46) No. 3: 

 Is harness normal? Go to step 3.  Repair or replace the harness.
3 CHECK HARNESS. 
Measure the resistance between the faulty door switch connector and chassis ground.
Connector & terminal 
Front door RH 
(R12) No. 3 - Chassis ground: 
Front door LH 
(R9) No. 3 - Chassis ground: 
Rear door RH 
(R16) No. 3 - Chassis ground: 
Rear door LH 
(R22) No. 3 - Chassis ground: 
Trunk lid 
(R186) No. 2 - Chassis ground: 
Rear gate 
(D47) No. 4 - Chassis ground: 		 Is the resistance less than 10 Ω? Go to step 4.  Repair or replace the harness.
4 CHECK DOOR SWITCH. 
Measure the resistance between terminals of faulty door switch, trunk lid switch or rear gate latch switch.
Connector & terminal 
Front RH door switch 
(R12) No. 2 - No. 3: 
Front LH door switch 
(R9) No. 2 - No. 3: 
Rear RH door switch 
(R16) No. 2 - No. 3: 
Rear LH door switch 
(R22) No. 2 - No. 3: 
Trunk lid latch switch 
(R186) No. 3 - No. 2: 
Rear gate latch switch 
(D47) No. 3 - No. 4: 		 Is the resistance 1 MΩ or more when the door switch is pushed, or the trunk lid or rear gate is closed? Go to step 5.  Replace the faulty parts.
  • Door switch
  • Trunk lid latch and actuator ASSY
  • Rear gate latch and actuator ASSY
5 CHECK DOOR SWITCH. 
Measure the resistance between terminals of faulty door switch, trunk lid switch or rear gate latch switch.
Connector & terminal 
Front RH door switch 
(R12) No. 2 - No. 3: 
Front LH door switch 
(R9) No. 2 - No. 3: 
Rear RH door switch 
(R16) No. 2 - No. 3: 
Rear LH door switch 
(R22) No. 2 - No. 3: 
Trunk lid latch switch 
(R186) No. 3 - No. 2: 
Rear gate latch switch 
(D47) No. 3 - No. 4: 		 Is the resistance less than 10 Ω when switch is released? Replace the body integrated unit. Refer to , BODY INTEGRATED UNIT . Replace the faulty parts.
  • Door switch
  • Trunk lid latch and actuator ASSY
  • Rear gate latch and actuator ASSY
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.