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Sound Is Not Heard From Subwoofer (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. CHECK FUSE 
    • Check that the following fuse is not blown.
    FUSE SPECIFICATION

    Unit Terminal Signal name Fuse No.
    Subwoofer 6 Battery power 18

    OK or NG

    1. OK: GO TO 2.
    2. NG: If fuse is blown, be sure to eliminate cause of problem before installing new fuse. Refer to SYSTEM WIRING DIAGRAMS and POWER SUPPLY CIRCUIT CHECK.
  2. POWER SUPPLY CIRCUIT CHECK 
    1. Disconnect subwoofer connector.
    2. Check voltage between the subwoofer and ground.
    VOLTAGE SPECIFICATION

    Unit Terminal No. OFF ACC ON
    (+) (-)
    Connector Terminal (wire color)
    Subwoofer B11 6 (G/B) Ground Battery voltage Battery voltage Battery voltage

    OK or NG

    1. OK: GO TO 3.
    2. NG:
      • Check connector housings for disconnected or loose terminals.
      • Repair harness or connector.
      Fig 1: Checking Voltage Between Subwoofer & Ground
      G03501045Courtesy of NISSAN MOTOR CO., U.S.A.
  3. GROUND CIRCUIT CHECK 

    Check continuity between subwoofer harness connector B11 terminal 5 (B) and ground.

    1. Continuity should exist. 

    OK or NG

    1. OK: GO TO 4.
    2. NG:
      • Check connector housings for disconnected or loose terminals.
      • Repair harness or connector.
      Fig 2: Checking Continuity Between Terminal 5 (B) & Ground
      G03501046Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK SUBWOOFER AMP. ON SIGNAL 
    1. Operate system and check voltage between subwoofer harness connector B11 terminal 4 (LG) and ground.
      1. Voltage: More than approx. 6.5V 

      OK or NG

      1. OK: GO TO 4.
      2. NG:
        • Check connector housings for disconnected or loose terminals.
        • Repair harness or connector.
  5. HARNESS CHECK 
    1. Disconnect BOSE speaker amp. connector and subwoofer connectors.
    2. Check continuity between BOSE speaker amp. harness connector terminal and subwoofer harness connector harness connector terminal.
      CONTINUITY SPECIFICATION

      Terminals Continuity
      BOSE speaker amp. Subwoofer
      Connector Terminal (Wire color) Connector Terminal (Wire color)
      M113 3 (G) B11 1 (G) Yes
      19 (W) B11 2(W)
      Fig 3: Checking Voltage Between Terminal 4 (LG) & Ground
      G03501047Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Check continuity between BOSE speaker amp. harness connector terminal and ground.
      CONTINUITY SPECIFICATION

      Terminals Continuity
      BOSE speaker amp. -
      Connector Terminal (Wire color)
      M113 3 (G) Ground No
      19 (W)
      Fig 4: Checking Continuity Between BOSE Speaker AMP. Harness Connector Terminals & Ground
      G03501048Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: GO TO 5.
    2. NG:
      • Check connector housings for disconnected or loose terminals.
      • Repair harness or connector.
  6. WOOFER SIGNAL CHECK 
    1. Connect BOSE speaker amp. connector and subwoofer connector.
    2. Turn ignition switch to ACC.
    3. Check the signal BOSE speaker amp. harness connector terminal with CONSULT-II or oscilloscope.
      Fig 5: Voltage Signal Graph
      G03501049Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 6: Checking Voltages Between Connectors
      G03501050Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: Replace subwoofer. Refer to "REMOVAL AND INSTALLATION OF SUBWOOFER (BOSE SYSTEM)  ".
    2. NG: Replace BOSE speaker amp. Refer to "REMOVAL AND INSTALLATION OF BOSE SPEAKER AMP.  "
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