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

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
  1. HARNESS CHECK 
    1. Disconnect BOSE speaker amp. connector M112 and suspect speaker connector.
    2. Check continuity between BOSE speaker amp. harness connector terminal M112 and suspect speaker harness connector terminal.
      CONTINUITY SPECIFICATION

      Terminals Continuity
      BOSE speaker amp. Speaker or tweeter
      Connector Terminal (Wire color) Connector Terminal (Wire color)
      M112 13 (L/W) D3 + (L/W)
      14 (L/R) -(L/R) Yes
      15 (W/B) D103 + (W/B)
      16 (L/B) -(L/B)
      13 (L/W) M109 + (L/W)
      14 (L/R) -(L/R)
      15 (W/B) M111 + (W/B)
      16 (L/B) -(L/B)
    3. Check continuity between BOSE speaker amp. harness connector terminal M112 and ground.
    CONTINUITY SPECIFICATION

    Terminals Continuity
    BOSE speaker amp. -
    Connector Terminal (Wire color)
    M112 13 (L/W) Ground No
    14 (L/R)
    15 (W/B)
    16 (L/B)
    Fig 1: Checking Continuity Between Terminals
    G03501030Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: GO TO 2.
    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 M112 and suspect speaker connector.
    2. Turn ignition switch to ACC.
    3. Push "POWER" switch.
    4. Check the signal BOSE speaker amp. harness connector M112 terminal with CONSULT-II or oscilloscope.
      Fig 2: Voltage Signal Graph
      G03501031Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 3: Checking Voltages Between Connectors
      G03501032Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: Replace suspect speaker. Refer to "REMOVAL AND INSTALLATION OF FRONT DOOR SPEAKER  " or Removal and Installation of Front Tweeter  .
    2. NG: GO TO 3.
  3. HARNESS CHECK 
    1. Disconnect audio unit connector and BOSE speaker amp. connector.
    2. Check continuity between audio unit harness connector terminal and BOSE speaker amp. harness connector terminal.
      CONTINUITY SPECIFICATION

      Terminals Continuity
      Audio unit BOSE speaker amp.
      Connector Terminal (Wire color) Connector Terminal (Wire color)
      M43 1 (B) M112 29 (B) Yes
      2 (W) 30 (W)
      3 (LG) 27 (LG)
      4 (V) 28 (V)
    3. Check continuity between audio unit harness connector terminal and ground.
    CONTINUITY SPECIFICATION

    Terminals Continuity
    Audio unit -
    Connector Terminal (Wire color)
    M43 1 (B) Ground No
    2 (W)
    3 (LG)
    4 (V)

    OK or NG

    1. OK: GO TO 4.
    2. NG:
      • Check connector housings for disconnected or loose terminals.
      • Repair harness or connector.
      Fig 4: Checking Continuity Between Terminals
      G03501033Courtesy of NISSAN MOTOR CO., U.S.A.
  4. FRONT SPEAKER SIGNAL CHECK 
    1. Connect audio unit connector and BOSE speaker amp. connector.
    2. Turn ignition switch ACC.
    3. Push "POWER" switch.
    4. Check the signal audio unit harness connector terminal with CONSULT-II or oscilloscope.
      Fig 5: Voltage Signal Graph
      G03501034Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 6: Checking Voltages Between Connectors
      G03501035Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: Replace BOSE speaker amp. Refer to Removal and Installation of BOSE Speaker Amp.  .
    2. NG: Replace audio unit. Refer to Removal and Installation for Audio Unit  .
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