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Home >> Infiniti >> 2017 >> QX80 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 82 (Audio, Visual & Navigation System (Base Audio Without Navigation) (DTC/Circuit Diagnosis)) >> DTC / Circuit Diagnosis >> Horizontal Synchronizing (Hp) Signal Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti QX50. However, it is still accessible from the selected car via links, so may be relevant.

  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
      M194 8 M215 38 Existed
    4. Check continuity between display unit harness connector and ground.
      Display unit Ground Continuity
      Connector Terminal
      M194 8 Not existed

    Is the inspection result normal?

    YES 

    GO TO STEP 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
      M194 8 Ground
      G04079342Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES 

    Replace AV control unit. Refer to REMOVAL AND INSTALLATION .

    NO 

    Replace display unit. Refer to REMOVAL AND INSTALLATION .