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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 84 (Audio, Visual & Navigation System (DTC/Circuit Diagnosis) (Base Audio) (Except Hybrid)) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Display Unit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

  1. CHECK INVERTER VCC AND SIGNAL VCC (POWER SUPPLY) CIRCUIT 1

    Check voltage between display unit harness connector M93 terminals 2, 3 and ground.

    Display unit Ground Condition Voltage
    (Approx.)
    Connector Terminal
    M93 2 - Ignition switch: ACC 9.0 V
    3

    Is the inspection result normal?

    YES 

    GO TO STEP 4. 

    NO 

    GO TO STEP 2. 

  2. CHECK INVERTER VCC AND SIGNAL VCC (POWER SUPPLY) CIRCUIT CONTINUITY

    1. Turn ignition switch OFF.
    2. Disconnect AV control unit connector M45 and display unit connector.
    3. Check continuity between AV control unit connector M45 terminals 64, 76 and display unit connector M93 terminals 3, 2.
      AV control unit Display unit Continuity
      Connector Terminal Connector Terminal
      M45 64 M93 3 Yes
      76 2
    4. Check continuity between AV control unit connector M45 terminals 64, 76 and ground.
      AV control unit Ground Continuity
      Connector Terminal
      M45 64 - No
      76

    Is the inspection result normal?

    YES 

    GO TO STEP 3. 

    NO 

    Repair or replace harness or connectors.

  3. CHECK INVERTER VCC AND SIGNAL VCC (POWER SUPPLY) CIRCUIT 2

    1. Connect the AV control unit connector M45.
    2. Check voltage between AV control unit connector M45 terminals 64, 76 and ground.
      AV control unit Ground Condition Voltage
      (Approx.)
      (+) (-)
      Connector Terminal
      M45 64 - Ignition switch: ACC 9.0 V
      76

    Is the inspection result normal?

    YES 

    Inspection End.

    NO 

    Replace AV control unit. Refer to REMOVAL AND INSTALLATION .

  4. CHECK INVERTER GROUND AND SIGNAL GROUND CIRCUIT CONTINUITY

    1. Turn ignition switch OFF.
    2. Disconnect AV control unit connector M45 and display unit connector.
    3. Check continuity between AV control unit connector M45 terminals 63, 75 and display unit connector M93 terminals 14, 13.
      AV control unit Display unit Continuity
      Connector Terminal Connector Terminal
      M45 63 M93 14 Yes
      75 13

    Is the inspection result normal?

    YES 

    GO TO STEP 5. 

    NO 

    Repair or replace harness or connectors.

  5. CHECK DISPLAY UNIT GROUND CIRCUIT

    Check continuity between display unit connector M93 terminal 1 and ground.

    Display unit Ground Continuity
    Connector Terminal
    M93 1 - Yes

    Is the inspection result normal?

    YES 

    Inspection End.

    NO 

    Repair or replace harness or connectors.

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