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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. Refer to BODY CONTROL (DIAGNOSTICS)>ACTIVE TEST .

    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 

    (B281) No. 9 - Horn relay No. 4:

    Is harness normal?

    Yes

    Check body integrated unit. Refer to BODY CONTROL (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .

    No

    Repair or replace the harness.

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