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Diagnosis Procedure

  1. CHECK HORN FUNCTION

    Check horn function with horn switch.

    Do the horn sound? 

    YES: GO TO 2.

    NO: Refer to "WIRING DIAGRAM - HORN - ".

  2. CHECK IPDM E/R POWER SUPPLY
    1. Disconnect IPDM E/R connector.
    2. Check voltage between IPDM E/R harness connector and ground.
    VOLTAGE SPECIFICATION

    (+) (-) Voltage (V) (Approx.)
    IPDM E/R
    Connector Terminal
    E13 34 Ground Battery voltage

    Is the inspection result normal? 

    YES: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION ".

    NO: GO TO 3.

  3. CHECK IPDM E/R POWER SUPPLY CIRCUIT
    1. Disconnect horn relay connector.
    2. Check continuity between IPDM E/R harness connector and horn relay harness connector.
      CONTINUITY SPECIFICATION

      IPDM E/R Horn relay Continuity
      Connector Terminal Connector Terminal
      E13 34 E5 1 Existed
    3. Check continuity between IPDM E/R harness connector and ground.
    CONTINUITY SPECIFICATION

    IPDM E/R Ground Continuity
    Connector Terminal
    E13 34 Not existed

    Is the inspection result normal? 

    YES: GO TO 4.

    NO: Repair or replace harness.

  4. CHECK INTERMITTENT INCIDENT

    INSPECTION END

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