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Home >> Infiniti >> 2008 >> M45 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio, Visual & Navigation System >> Without Mobile Entertainment System >> Component Diagnosis >> Steering Switch Signal A Circuit >> With Navigation >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK STEERING SWITCH SIGNAL A CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect AV control unit connector and spiral cable connector.
    3. Check continuity between AV control unit harness connector terminal 6 and spiral cable harness connector terminal 33.

      6 - 33: Continuity should exist. 

    4. Check continuity between AV control unit harness connector terminals 6 and ground.

      6 - Ground: Continuity should not exist. 

    Is the inspection result normal? 

    Yes: GO TO  2.

    No: Repair harness or connector.

  2. CHECK SPIRAL CABLE 

    Check spiral cable.

    Is the inspection result normal? 

    Yes: GO TO  3.

    No: Replace spiral cable.

  3. CHECK AV CONTROL UNIT VOLTAGE 
    1. Connect AV control unit connector and spiral cable connector.
    2. Turn ignition switch ON.
    3. Check voltage between AV control unit harness connector terminals 6 and 15.

      6 - 15: Approx. 5 V 

    Is the inspection result normal? 

    Yes: GO TO  4.

    No: Replace AV control unit.

  4. CHECK STEERING SWITCH 
    1. Turn ignition switch OFF.
    2. Check steering switch. Refer to COMPONENT INSPECTION  .

    Is the inspection result normal? 

    Yes: INSPECTION END

    No: Replace steering switch.

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