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Home >> Infiniti >> 2012 >> M37 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 114 (Audio, Visual & Navigation System (Base Audio Without Navigation)) >> DTC/Circuit Diagnosis >> RGB Synchronizing Signal Circuit >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CONTINUITY RGB SYNCHRONIZING 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 19 M82 42 Existed
    4. Check continuity between display unit harness connector and ground.
      Display unit Ground Continuity
      Connector Terminal
      M195 19 Not existed

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Repair harness or connector.

  2. CHECK RGB SYNCHRONIZING 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 19 Ground
      G08884770

      Is the inspection result normal? 

      YES: Replace display unit. Refer to "REMOVAL AND INSTALLATION ".

      NO: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".

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