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Sound Is Not Heard From Rear Speaker or Rear 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 9 (G/R) B45 + (G/R) Yes
      10 (B/Y) -(B/Y)
      11 (G/Y) B131 + (L)
      12 (R/G) -(R)
      9 (G/R) D516 + (G/R)
      10 (B/Y) -(B/Y)
      11 (G/Y) D506 + (L)
      12 (R/G) -(R)
    3. Check continuity between BOSE speaker amp. harness connector M112 terminal and ground.
    CONTINUITY SPECIFICATION

    Terminals Continuity
    BOSE speaker amp. -
    Connector Terminal (Wire color)
    M112 9 (G/R) Ground No
    10 (B/Y)
    11 (G/Y)
    12 (R/G)

    OK or NG

    1. OK: GO TO 2.
    2. NG:
      • Check connector housings for disconnected or loose terminals.
      • Repair harness or connector.
      Fig 1: Checking Continuity Between Terminals
      G03501036Courtesy of NISSAN MOTOR CO., U.S.A.
  2. REAR 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
      G03501037Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 3: Checking Voltages Between Connectors
      G03501038Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: Replace suspect speaker. Refer to "REMOVAL AND INSTALLATION OF REAR SPEAKER  " or Removal and Installation of Rear Tweeter  .
    2. NG: GO TO 3.
  3. HARNESS CHECK 
    1. Disconnect audio unit connector M44 and BOSE speaker amp. connector M112.
    2. Check continuity between audio unit harness connector M44 terminal and BOSE speaker amp. harness connector M112 terminal.
      CONTINUITY SPECIFICATION

      Terminals Continuity
      Audio unit BOSE speaker amp.
      Connector Terminal (Wire color) Connector Terminal (Wire color)
      M44 13 (B/R) M112 25 (B/R) Yes
      14 (BR) 26 (BR)
      15 (BAN) 23 (B/W)
      16 (L) 24 (L)
    3. Check continuity between audio unit harness connector terminal and ground.
    CONTINUITY SPECIFICATION

    Terminals Continuity
    Audio unit -
    Connector Terminal (Wire color)
    M44 13 (B/R) Ground No
    14 (BR)
    15 (B/W)
    16 (L)

    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
      G03501039Courtesy of NISSAN MOTOR CO., U.S.A.
  4. REAR SPEAKER SIGNAL CHECK 
    1. Connect audio unit connector M44 and BOSE speaker amp. connector M112.
    2. Turn ignition switch to ACC.
    3. Push "POWER" switch.
    4. Check the signal at audio unit harness connector M44 terminal with CONSULT-II or oscilloscope.
      Fig 5: Voltage Signal Graph
      G03501040Courtesy 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  ".
      Fig 6: Checking Voltages Between Connectors
      G03501041Courtesy of NISSAN MOTOR CO., U.S.A.
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