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NAVI Screen is Rolling

WARNING: This page is about a different car, the 2006 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK HARNESS 
    1. Turn ignition switch OFF.
    2. Disconnect NAVI control unit connector B152 and display control unit connector M95.
    3. Check continuity between NAVI control unit and display control unit.
      TERMINALS CONTINUITY DESCRIPTION

      Terminals Continuity
      B A
      Connector Terminal Connector Terminal
      NAVI control unit: B152 48 Display control unit: M95 43 Yes
      49 41
    4. Check continuity between NAVI control unit and ground.
      TERMINALS CONTINUITY DESCRIPTION

      Terminals Continuity
      B -
      Connector Terminal
      NAVI control unit: B152 48 Ground No
      49
      Fig 1: Identifying Continuity Between NAVI Control Unit And Ground
      G04137082Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK : GO TO 2.
    • NG : Repair harness.
  2. CHECK RGB SYNCHRONIZING SIGNAL 
    1. Connect NAVI control unit connector and display control unit connector.
    2. Turn ignition switch ON.
    3. Check signal between NAVI control unit connector M95 terminals 48 and 49 with CONSULT-II or oscilloscope.

      48 - 49 : Refer to " TERMINALS AND REFERENCE VALUE FOR NAVI CONTROL UNIT  ". 

      Fig 2: Identifying Signal Between NAVI Control Unit Connector M95 Terminals 48 And 49
      G04137083Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

  3. CHECK HARNESS 
    1. Turn ignition switch OFF.
    2. Disconnect display control unit connector M95 and display unit connector M93.
    3. Check continuity between display control unit and display unit.
      TERMINALS CONTINUITY DESCRIPTION

      Terminals Continuity
      Display control unit Display unit
      Connector Terminal Connector Terminal
      M95 56 M93 19 Yes
      49 21
    4. Check continuity between display control unit and ground.
      TERMINALS CONTINUITY DESCRIPTION

      Terminals Continuity
      Display control unit -
      Connector Terminal
      M95 56 Ground No
      49
      Fig 3: Identifying Continuity Between Display Control Unit And Ground
      G04137084Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK : GO TO 4.
    • NG : Repair harness.
  4. CHECK RGB SYNCHRONIZING SIGNAL 
    1. Connect display control unit connector and display unit connector.
    2. Turn ignition switch ON.
    3. Check signal between display unit connector M93 terminals 19 and 21 with CONSULT-II or oscilloscope.

      19 - 21 : Refer to " TERMINALS AND REFERENCE VALUE FOR DISPLAY CONTROL UNIT  ". 

      Fig 4: Identifying Signal Between Display Unit Connector M93 Terminals 19 And 21
      G04137085Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK : Replace display unit. Refer to "DISPLAY UNIT ".
    • NG : Replace display control unit. Refer to.
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