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Sound Is Not Heard From Front Door Speaker or Tweeter (BOSE System)

WARNING: This page is about a different car, the 2007 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 front door speaker and tweeter connector (LH or RH).
    2. Check continuity between BOSE speaker amp. harness connector terminal and front door speaker harness connector terminal.
      BOSE SPEAKER AMP. HARNESS CONNECTOR TERMINAL AND FRONT DOOR SPEAKER HARNESS CONNECTOR TERMINAL

      Terminals Continuity
      BOSE speaker amp. Speaker or tweeter
      Connector Terminal Connector Terminal
      B128 13 D3 + Yes
      14 -
      15 D103 +
      16 -
      13 D12 +
      14 -
      15 D112 +
      16 -
    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 13 Ground No
      14
      15
      16
    Fig 1: Checking Continuity Between Bose Speaker Amp. Connector Terminal And Front Door Speaker Connector Terminal
    G04918335Courtesy 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. FRONT SPEAKER SIGNAL CHECK 
    1. Connect BOSE speaker amp. connector and front door speaker and tweeter connector.
    2. Turn ignition switch to ACC.
    3. Push "POWER" switch.
    4. Check the signal between BOSE speaker amp. harness connector terminals with CONSULT-II or oscilloscope.
      FRONT SPEAKER SIGNAL CHECK

      Terminals Condition Reference signal
      (+) (-)
      Connector Terminal Connector Terminal
      B128 13 B128 14 Receive audio signal
      G04904044
      15 16
      Fig 2: Checking Signal Between Bose Speaker Amp Connector Terminals
      G04914236Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Replace speaker. Refer to "FRONT DOOR SPEAKER " or "TWEETER ".

    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 and BOSE speaker amp. connector.
    3. Check continuity between audio unit (A) connector terminal and BOSE speaker amp. (B) connector terminal.
      AUDIO UNIT (A) CONNECTOR TERMINAL AND BOSE SPEAKER AMP. (B) CONNECTOR TERMINAL (WITHOUT NAVI)

      Terminals Continuity
      (A) (B)
      Connector Terminal Connector Terminal
      M51 3 B128 29 Yes
      2 30
      12 27
      11 28
    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 3 Ground No
      2
      12
      11
      Fig 3: Checking Continuity Between Audio Unit Harness Connector Terminal And Ground
      G04918338Courtesy 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 and BOSE speaker amp. connector.
    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
      M43 1 B128 29 Yes
      2 30
      3 27
      4 28
    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
      M43 1 Ground No
      2
      3
      4
    Fig 4: Checking Continuity Between Audio Unit And BOSE Speaker Amp. Connector Terminals
    G04904124Courtesy 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. FRONT 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 connector terminals with CONSULT-II or oscilloscope.
      FRONT SPEAKER SIGNAL CHECK (WITHOUT NAVI)

      Terminals Condition Reference signal
      (+) (-)
      Connector Terminal Connector Terminal
      M51 2 M51 3 Receive audio signal
      G04904044
      11 12
      Fig 5: Checking Voltage Between 2,11 And 2,3 Audio Unit Connector Terminals
      G04918331Courtesy 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. FRONT 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-II or oscilloscope.
      FRONT SPEAKER SIGNAL CHECK (WITH NAVI)

      Terminals Condition Reference signal
      (+) (-)
      Connector Terminal Connector Terminal
      M43 2 M43 1 Receive audio signal
      G04904044
      4 3
      Fig 6: Checking Voltage Between 1,2 And 3,4 Audio Unit Harness Connector Terminal And Ground
      G04904117Courtesy 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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