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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 85 (Audio, Visual & Navigation System (DTC/Circuit Diagnosis) (BOSE Audio Without Navigation) (Except Hybrid) (2 Of 2)) >> DTC/Circuit Diagnosis >> RGB (B: Blue) Signal Circuit >> 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 RGB (B: BLUE) SIGNAL CIRCUIT CONTINUITY

    1. Turn ignition switch OFF.
    2. Disconnect AV control unit connector M194 and display unit connector.
    3. Check continuity between AV control unit connector M194 terminal 55 and display unit connector M93 terminal 18.
      AV control unit Display unit Continuity
      Connector Terminal Connector Terminal
      M194 55 M93 18 Yes
    4. Check continuity between AV control unit connector M194 terminal 55 and ground.
      AV control unit Ground Continuity
      Connector Terminal
      M194 55 No

    Is inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Repair or replace harness or connectors.

  2. CHECK RGB (B: BLUE) SIGNAL

    1. Connect AV control unit connector M194 and display unit connector.
    2. Turn ignition switch ON.
    3. Check signal between display unit connector M93 terminal 18 and ground.
      Display unit Ground Condition Reference value
      (+) (-)
      Connector Terminal
      M93 18 - "Color Spectrum Bar" on DISPLAY DIAGNOSIS screen.
      GNSSKIB2237J-237Courtesy of NISSAN NORTH AMERICA, INC.

    Is 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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