2012 Subaru Outback Base, Standard TransFACTORY OEM SERVICE PROCEDURE

Check Ignition Switch Circuit

Step Check Yes No
1 CHECK IGNITION SWITCH VOLTAGE. 
  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 & Save}.
  5. Select the {BATT voltage} and {IG power supply voltage}.
 Does the {IG power supply voltage} indicates 0 V when ignition is OFF or a value in a range of ±1 V from the {BATT voltage} when ignition is ON. The ignition switch input circuit is OK. Go to step 2  .
2 CHECK IGNITION SWITCH CIRCUIT. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the body integrated unit connector.
  3. Turn the ignition switch to ON.
  4. Measure the voltage between body integrated unit connector and chassis ground.

    Connector & terminal 

    (i171) No. 17 (+) - Chassis ground (-): 

 Is the voltage 10 V or more? Check body integrated unit. Refer to BASIC DIAGNOSTIC PROCEDURE . Check the harness for open or short circuit between body integrated unit and fuse.
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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.