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Home >> Subaru >> 2018 >> Forester 2.5i Touring >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Anti-Theft System - Security And Locks >> Keyless Entry System >> Inspection >> Check Ignition Switch Illumination

Check Ignition Switch Illumination

  1. CHECK IGNITION CIRCUIT  .

    Check the ignition circuit. Ref. to SECURITY AND LOCKS>Security System>INSPECTION>CHECK IGNITION SWITCH CIRCUIT .

    Is the switch circuit normal?

    Yes:  Go to  2

    No:  Repair or replace.

  2. CHECK DOOR SWITCH CIRCUIT  .

    Inspect door switch circuit. Ref. to SECURITY AND LOCKS>Keyless Entry System>INSPECTION>CHECK DOOR SWITCH .

    Is the switch circuit normal?

    Yes:  Go to  3

    No:  Repair or replace.

  3. CHECK FUSE  .

    Remove and visually check fuse No. 14 (in the main fuse box).

    Is the fuse blown out?

    Yes:  Replace the fuse with a new part.

    No:  Go to  4

  4. CHECK HARNESS  .
    1. Disconnect the ignition switch illumination connector.
      NOTE: The ignition switch illumination is integrated into the immobilizer antenna.
    2. Measure the voltage between ignition switch illumination connector and chassis ground.

      Connector & terminal 

      (B415) No. 2 (+) - Chassis ground (-):

    Is the voltage 10 V or more?

    Yes:  Go to  5

    No:  Check the harness for open or short circuits between the ignition switch illumination and fuse.

  5. CHECK IGNITION SWITCH ILLUMINATION CIRCUIT  .
    1. Disconnect the connector of body integrated unit.
    2. Check the harness between body integrated unit and ignition switch illumination.

      Connector & terminal 

      (B280) No. 25 - (B415) No. 6:

    Is harness normal?

    Yes:  Go to  6

    No:  Check the harness for open circuits and shorts between the body integrated unit and ignition switch illumination.

  6. CHECK IGNITION SWITCH ILLUMINATION BULB  .

    Apply battery voltage between terminals of the bulb.

    Terminals 

    No. 2 (+) - No. 6 (-):

    Does the bulb illuminate?

    Yes:  Replace the body integrated unit. Ref. to SECURITY AND LOCKS>Body Integrated Unit .

    No:  Replace the immobilizer antenna. Ref. to SECURITY AND LOCKS>Immobilizer Antenna .