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Home >> Infiniti >> 2009 >> G37 Base, 2D Convertible >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Audio, Visual & Navigation System (Base Without Navigation) -- Convertible >> DTC/Circuit Diagnosis >> Composite Image Signal Circuit >> Diagnosis Procedure
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Diagnosis Procedure

  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.
      CONTINUITY SPECIFICATION

      AV control unit Display unit Continuity
      Connector Terminals Connector Terminals
      M83 36 M71 15 Existed
      37 4
    4. Check continuity between display unit harness connector and ground.
      CONTINUITY SPECIFICATION

      Display unit Ground Continuity
      Connector Terminal
      M71 15 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 display unit harness connector using an oscilloscope.
      SIGNAL SPECIFICATION

      (+) (-) Condition Signal
      Display unit
      Connector Terminal
      M71 15 Ground When camera image is displayed.
      G04890020Courtesy of NISSAN MOTOR CO., U.S.A.

      Is the inspection result normal? 

      YES: Replace display unit.

      NO: Replace AV control unit.

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