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

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

HARNESS CHECK
1. Disconnect BOSE speaker amp. connector M112 and front door speaker and tweeter connector (LH or RH).
2. Check continuity between BOSE speaker amp. harness connector M112 terminal and suspect speaker harness connector terminal.
  
  Fig 1: Connector M112 Terminal (Wire Color) Specifications
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: Checking Continuity Between Bose Speaker AMP Harness Connector M112 Terminal & Suspect Speaker Harness Connector Terminal
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check continuity between BOSE speaker amp. harness connector M112 terminal and ground.
Fig 3: Connector M112 Terminal Continuity Chart
Courtesy 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.
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 between BOSE speaker amp. harness connector M112 terminals with CONSULT-II or oscilloscope.
  
  Fig 4: Checking Signal Between Bose Speaker AMP Harness Connector M112 Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 5: Terminal Signal Reference Graph
  Courtesy 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.
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.
  
  Fig 6: Connector M43 Terminal (Wire Color) Specifications
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check continuity between audio unit harness connector terminal and ground.
  
  Fig 7: Checking Continuity Between Audio Unit Harness Connector Terminal & Bose Speaker AMP Harness Connector Terminal
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 8: Connector Terminal Continuity Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 4.
2. NG:
  - Check connector housings for disconnected or loose terminals.
  - Repair harness or connector.
FRONT SPEAKER SIGNAL CHECK
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.
  
  Fig 9: Checking Signal Between Audio Unit Harness Connector Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 10: Terminal Signal Reference Graph
  Courtesy 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 ".