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Sound Is Not Heard From Rear Door Speaker (BOSE System)

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. HARNESS CHECK 
    1. Disconnect BOSE speaker amp. connector and rear door speaker connector.
    2. Check continuity between BOSE speaker amp. harness connector terminal and speaker harness connector terminal.
      BOSE SPEAKER AMP. HARNESS CONNECTOR TERMINAL AND SPEAKER HARNESS CONNECTOR TERMINAL

      Terminals Continuity
      BOSE speaker amp. Speaker
      Connector Terminal Connector Terminal
      B128 9 D202   Yes
      10 -
      11 D302 +
      12 -
    3. Check continuity between BOSE speaker amp. harness connector terminal and ground.
      BOSE SPEAKER AMP. HARNESS CONNECTOR TERMINAL AND GROUND

      Terminals Continuity
      BOSE speaker amp. -
      Connector Terminal
      B128 9 Ground No
      10
      11
      12
      Fig 1: Checking Continuity Between Bose Speaker Amp. Harness Connector Terminal And Ground
      G04918344Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 2.

    NG:

    • Check connector housings for disconnected or loose terminals.
    • Repair harness or connector.
  2. REAR SPEAKER SIGNAL CHECK 
    1. Connect BOSE speaker amp. connector and rear door speaker connector.
    2. Turn ignition switch to ACC.
    3. Push "POWER" switch.
    4. Check the signal between BOSE speaker amp. harness connector terminals with CONSULT-III or oscilloscope.
      REAR SPEAKER SIGNAL CHECK

      Terminals Condition Reference signal
      (+) (-)
      Connector Terminal Connector Terminal
      B128 9 B128 10 Receive audio signal
      G04904044Courtesy of NISSAN MOTOR CO., U.S.A.
      11 12
      Fig 2: Checking Signal Between Bose Speaker Amp. Harness Connector 128 Terminals 9,10 And 11,12
      G04904129Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK : Replace speaker. Refer to "REAR DOOR SPEAKER ".

    NG:

    : GO TO 3 (without NAVI).

    : GO TO 4 (with NAVI).

  3. HARNESS CHECK (WITHOUT NAVI) 
    1. Turn ignition switch OFF.
    2. Disconnect audio unit connector M44 and BOSE speaker amp. connector B128.
    3. Check continuity between audio unit harness connector terminal and BOSE speaker amp. harness connector terminal.
      AUDIO UNIT HARNESS CONNECTOR TERMINAL AND BOSE SPEAKER AMP. HARNESS CONNECTOR TERMINAL (WITHOUT NAVI)

      Terminals Continuity
      Audio unit BOSE speaker amp.
      Connector Terminal Connector Terminal
      M51 5 B128 25 Yes
      4 26
      14 23
      13 24
    4. Check continuity between audio unit harness connector terminal and ground.
      AUDIO UNIT HARNESS CONNECTOR TERMINAL AND GROUND (WITHOUT NAVI)

      Terminals Continuity
      Audio unit -
      Connector Terminal
      M51 4 Ground No
      5
      13
      14
    Fig 3: Checking Continuity Between Audio Unit Harness Connector Terminal And Ground
    G04918347Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 5.

    NG:

    • Check connector housings for disconnected or loose terminals.
    • Repair harness or connector.
  4. HARNESS CHECK (WITH NAVI) 
    1. Turn ignition switch OFF.
    2. Disconnect audio unit connector M44 and BOSE speaker amp. connector B128.
    3. Check continuity between audio unit harness connector terminal and BOSE speaker amp. harness connector terminal.
      AUDIO UNIT HARNESS CONNECTOR TERMINAL AND BOSE SPEAKER AMP. HARNESS CONNECTOR TERMINAL (WITH NAVI)

      Terminals Continuity
      Audio unit BOSE speaker amp.
      Connector Terminal Connector Terminal
      M44 13 B128 25 Yes
      14 26
      15 23
      16 24
    4. Check continuity between audio unit harness connector terminal and ground.
      AUDIO UNIT HARNESS CONNECTOR TERMINAL AND GROUND (WITH NAVI)

      Terminals Continuity
      Audio unit -
      Connector Terminal
      M44 13 Ground No
      14
      15
      16
    Fig 4: Checking Continuity Between Audio Unit And BOSE Speaker Amp. Connector Terminals
    G04904130Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 6.

    NG:

    • Check connector housings for disconnected or loose terminals.
    • Repair harness or connector.
  5. REAR SPEAKER SIGNAL CHECK (WITHOUT NAVI) 
    1. Connect audio unit connector and BOSE speaker amp. connector.
    2. Turn ignition switch to ACC.
    3. Push "POWER" switch.
    4. Check the signal between audio unit harness connector terminals with CONSULT-III or oscilloscope.
      REAR SPEAKER SIGNAL CHECK (WITHOUT NAVI)

      Terminals Condition Reference signal
      (+) (-)
      Connector Terminal Connector Terminal
      M51 5 M51 4 Receive audio signal
      G04904044Courtesy of NISSAN MOTOR CO., U.S.A.
      14 13
      Fig 5: Checking Signal Between Audio Unit Harness Connector Terminals
      G04918350Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Replace BOSE speaker amp. Refer to "BOSE SPEAKER AMP. ".

    NG: Replace audio unit. Refer to "REMOVAL AND INSTALLATION ".

  6. REAR SPEAKER SIGNAL CHECK (WITH NAVI) 
    1. Connect audio unit connector and BOSE speaker amp. connector.
    2. Turn ignition switch to ACC.
    3. Push "POWER" switch.
    4. Check the signal between audio unit harness connector terminals with CONSULT-III or oscilloscope.
      REAR SPEAKER SIGNAL CHECK (WITH NAVI)

      Terminals Condition Reference signal
      (+) (-)
      Connector Terminal Connector Terminal
      M44 14 M44 13 Receive audio signal
      G04904044Courtesy of NISSAN MOTOR CO., U.S.A.
      16 15
      Fig 6: Checking Signal Between Audio Unit Harness Connector M44 Terminals
      G04904132Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Replace BOSE speaker amp. Refer to "BOSE SPEAKER AMP ".

    NG: Replace audio unit. Refer to "REMOVAL AND INSTALLATION ".

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