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Home >> Infiniti >> 2011 >> M56 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Audio, Visual & Navigation System (BOSE Audio With Navigation)) >> DTC/Circuit Diagnosis >> Composite Image Signal Circuit >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect AV control unit connector and display unit connector.
    3. Check continuity between AV control unit harness connector and display unit harness connector.
      AV control unit Display unit Continuity
      Connector Terminal Connector Terminal
      M210 68 M215 18 Existed
    4. Check continuity between AV control unit harness connector and ground.
      AV control unit Ground Continuity
      Connector Terminal
      M210 68 Not existed

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair harness or connector.

  2. CHECK COMPOSITE IMAGE SIGNAL 
    1. Connect AV control unit connector and display unit connector.
    2. Turn ignition switch ON.
    3. Check signal between AV control unit harness connector and ground.
      (+) (-) Condition Reference value
      AV control unit
      Connector Terminal
      M210 68 Ground At DVD image is displayed.
      G08893445

      Is the inspection result normal? 

      YES: Replace display unit. Refer to "REMOVAL AND INSTALLATION ".

      NO: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".