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Home >> Infiniti >> 2012 >> M37 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Audio, Visual & Navigation System (Base Audio Without Navigation) >> DTC/Circuit Diagnosis >> Horizontal Synchronizing (Hp) Signal Circuit >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) 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.
      Display unit AV control unit Continuity
      Connector Terminal Connector Terminal
      M195 8 M82 38 Existed
    4. Check continuity between display unit harness connector and ground.
      Display unit Ground Continuity
      Connector Terminal
      M195 8 Not existed

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair harness or connector.

  2. CHECK HORIZONTAL SYNCHRONIZING (HP) 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.
      (+) (-) Reference value
      Display unit
      Connector Terminal
      M195 8 Ground
      G04923333

      Is the inspection result normal? 

      YES: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".

      NO: Replace display unit. Refer to "REMOVAL AND INSTALLATION ".

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