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Home >> Infiniti >> 2015 >> Q60 Base, 2D Convertible >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio, Visual & Navigation System (BOSE Audio With Navigation) (Convertible) >> DTC/Circuit Diagnosis >> DTC U1243: Display Unit >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT

    Check display unit power supply and ground circuit. Refer to DIAGNOSIS PROCEDURE .

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Repair malfunctioning parts.

  2. CHECK CONTINUITY COMMUNICATION 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 Terminals Connector Terminals
      M75 9 M210 89 Existed
      10 73
    4. Check continuity between display unit harness connector and ground.
      Display unit Ground Continuity
      Connector Terminals
      M75 9 Not existed
      10

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair harness or connector.

  3. CHECK COMMUNICATION 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.
      (+) (-) Condition Reference value
      Display unit
      Connector Terminal
      M75 9 Ground When adjusting display brightness.
      G06771666Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    Replace AV control unit. Refer to EXPLODED VIEW .

  4. CHECK COMMUNICATION SIGNAL

    Check signal between display unit harness connector and ground.

    (+) (-) Condition Reference value
    Display unit
    Connector Terminal
    M75 10 Ground When adjusting display brightness.
    G06771666Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES 

    INSPECTION END

    NO 

    Replace display unit. Refer to EXPLODED VIEW .