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Home >> Infiniti >> 2010 >> G37 Base, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 88 (Audio Visual System & Navigation System) >> BOSE Audio Without Navigation >> Component Diagnosis >> RGB (B: Blue) Signal Circuit >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2010 Nissan Armada. 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 CONTINUITY RGB (B: BLUE) SIGNAL CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect display unit connector M93 and AV control unit connector M171.
    3. Check continuity between display unit harness connector M93 (A) terminal 18 and AV control unit harness connector M171 (B) terminal 38.
      CONTINUITY CHART

      A B Continuity
      Connector Terminal Connector Terminal
      M93 18 M171 38 Yes
      Fig 1: Checking Continuity Between Display Unit Harness Connector M93 Terminal And AV Control Unit Harness Connector M171 Terminal
      G05383312Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check continuity between display unit harness connector M93 (A) terminal 18 and ground.
      CONTINUITY CHART

      A - Continuity
      Connector Terminal
      M93 18 Ground No

      Are continuity results as specified? 

      YES: GO TO  2.

      NO: Repair harness or connector.

  2. CHECK RGB (B: BLUE) SIGNAL
    1. Connect display unit connector M93 and AV control unit connector M171.
    2. Turn ignition switch ON.
    3. Check signal between display unit harness connector M93 terminal 18 and ground.
      SIGNAL REFERENCE

      (+) (-) Condition Reference signal
      Connector Terminal
      M93 18 Ground Receive audio signal
      G05219860Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 2: Checking Signal Between Display Unit Harness Connector M93 Terminal 18 And Ground
      G05383314Courtesy of NISSAN MOTOR CO., U.S.A.

      Are voltage readings as specified? 

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

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