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Diagnosis Procedure

  1. CHECK STEERING SWITCH SIGNAL GND CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect audio unit connector and TEL adapter unit connector.
    3. Check continuity between audio unit harness connector and TEL adapter unit harness connector.
      CONTINUITY SPECIFICATION

      Audio unit TEL adapter unit Continuity
      Connector Terminal Connector Terminal
      M49 53 B54 14 Existed

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Repair harness or connector.

  2. CHECK GROUND CIRCUIT
    1. Connect audio unit connector.
    2. Check continuity between audio unit harness connector and ground.
      CONTINUITY SPECIFICATION

      Audio unit Ground Continuity
      Connector Terminal
      M49 53 Existed

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Repair harness or connector.

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