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AV CONTROL UNIT : Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FUSE

    Check for blown fuses.

    FUSE LIST

    Power source Fuse No.
    Battery 35
    Ignition switch ACC or ON 19

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Be sure to eliminate cause of malfunction before installing new fuse.

  2. CHECK POWER SUPPLY CIRCUIT

    Check voltage between AV control unit harness connectors and ground.

    VOLTAGE REFERENCE CHART

    Signal name Connector No. Terminal No. Ignition switch position Value (Approx.)
    Battery power supply M178 19 OFF Battery voltage
    ACC power supply 7 ACC Battery voltage

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Check harness between AV control unit and fuse.

  3. CHECK GROUND CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect AV control unit connectors.
    3. Check continuity between AV control unit harness connectors and ground.
      CONTINUITY REFERENCE CHART

      Signal name Connector No. Terminal No. Ignition switch position Continuity
      Ground M178 20 OFF Existed

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Repair harness or connector.

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