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Check Horn

  1. CHECK HORN OPERATION  .

    Check the horn sounds when the horn switch is pushed.

    Does the horn sound?

    Yes: Go to  2.

    No: Check the horn circuit.

  2. CHECK BODY INTEGRATED UNIT  .

    Select and perform the «Horn Output» using Subaru Select Monitor.

    NOTE: For detailed procedures, refer to "PC application help for Subaru Select Monitor".

    Does the horn sound?

    Yes: Horn circuit is OK.

    No: Go to  3.

  3. CHECK HORN RELAY CIRCUIT  .
    1. Turn the ignition switch to OFF.
    2. Disconnect the connector of body integrated unit.
    3. Remove the horn relay.
    4. Check the harness between body integrated unit and horn relay.

      Connector & terminal 

      (B280) No. 24 - Horn relay No. 4:

    Is harness normal?

    Yes: Check body integrated unit. Ref. to BODY CONTROL SYSTEM (DIAGNOSTICS) > BASIC DIAGNOSTIC PROCEDURE .

    No: Repair or replace the harness.

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