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AV Communication Line Check (Between Display Control Unit and AV Switch)

  1. CHECK AV SWITCH CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect display control unit connector and AV switch connector.
    3. Check continuity between display control unit and AV switch.
      TERMINALS CONTINUITY REFERENCE

      Terminals Continuity
      Display control unit (+) AV switch (-)
      Connector Terminal (Wire color) Connector Terminal (Wire color)
      M95 28 (V) M98 6(V) Yes
      30 (LG) 8(LG)
    4. Check continuity between display control unit and ground.
    TERMINALS CONTINUITY REFERENCE

    Terminals Continuity
    Display control unit (+) (-)
    Connector Terminal (Wire color)
    M95 28 (V) Ground No
    30 (LG)
    Fig 1: Checking Continuity Between Display Control Unit & Ground
    G03496407Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: GO TO 2.
    2. NG: Repair harness or connector.
  2. CHECK AV COMMUNICATION SIGNAL 
    1. Connect display control unit connector and AV switch connector.
    2. Turn ignition switch ON.
    3. Check signal between display control unit harness connector M95 terminal 28 (L) and 30 (LG) with CONSULT-II or oscilloscope.
      1. 28 (L), 30 (LG) - Ground:  Refer to "TERMINALS AND REFERENCE VALUE FOR DISPLAY CONTROL UNIT  ".
      Fig 2: Checking Signal Between Display Control Unit Harness Connector Terminal With CONSULT-II Or Oscilloscope
      G03496408Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: Replace AV switch. Refer to REMOVAL AND INSTALLATION FOR AV SWITCH .
    2. NG: Replace display control unit. Refer to REMOVAL AND INSTALLATION OF NAVI CONTROL UNIT  .