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Home >> Infiniti >> 2009 >> G37 Base, 2D Convertible >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio, Visual & Navigation System (BOSE With Navigation) -- Convertible >> DTC/Circuit Diagnosis >> Vertical Synchronizing (VP) Signal Circuit >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect display unit connector and AV control unit connector.
    3. Check continuity between display unit harness connector and AV control unit harness connector.
      CONNECTOR TERMINALS CONTINUITY REFERENCE CHART

      Display unit AV control unit Continuity
      Connector Terminal Connector Terminal
      M75 20 M88 69 Existed
    4. Check continuity between display unit harness connector and ground.
      CONNECTOR TERMINALS CONTINUITY REFERENCE CHART

      Display unit Ground Continuity
      Connector Terminal
      M75 20 Not existed

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair harness or connector.

  2. CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL
    1. Connect display unit connector and AV control unit connector.
    2. Turn ignition switch ON.
    3. Check signal between display unit harness connector and ground.
      CONNECTOR TERMINALS SIGNAL CHECK REFERENCE CHART

      (+) (-) Reference value
      Display unit
      Connector Terminal
      M75 20 Ground
      G04923331Courtesy of NISSAN MOTOR CO., U.S.A.

      Is the inspection result normal? 

      YES: Replace AV control unit.

      NO: Replace display unit.

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