Sound Is Not Heard From Front Door Speaker or Front Tweeter (BOSE System)
WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
- HARNESS CHECK
- Disconnect BOSE speaker amp. connector B75 and suspect speaker connector.
- Check continuity between BOSE speaker amp. harness connector terminal B75 and suspect speaker harness connector terminal.TERMINAL CONTINUITY CHART
Terminals Continuity BOSE speaker amp. Speaker or tweeter Connector Terminal Connector Terminal B75 13 D12 + Yes 14 - 15 D112 + 16 - 13 M109 + 14 - 15 M111 + 16 - - Check continuity between BOSE speaker amp. harness connector terminal B75 and ground.TERMINAL CONTINUITY CHART
Terminals Continuity BOSE speaker amp. - Connector Terminal B75 13 Ground No 14 15 16
OK or NG
OK: GO TO 2.
NG:
- Check connector housings for disconnected or loose terminals.
- Repair harness or connector.
- FRONT SPEAKER SIGNAL CHECK
- Connect BOSE speaker amp. connector B75 and suspect speaker connector.
- Turn ignition switch to ACC.
- Push "POWER" switch.
- Check the signal between BOSE speaker amp. harness connector B75 terminals with CONSULT-II or oscilloscope.TERMINAL SIGNAL CHART
Terminals Condition Reference signal (+) (-) Connector Terminal Connector Terminal B75 13 B75 14 Receive audio signal 15 16
OK or NG
OK: Replace suspect speaker. Refer to "FRONT DOOR SPEAKER ".
NG: GO TO 3.
- HARNESS CHECK
- Disconnect audio unit connector M43 and BOSE speaker amp. connector B75.
- Check continuity between audio unit harness connector terminals and BOSE speaker amp. harness connector terminals.TERMINAL CONTINUITY CHART
Terminals Continuity Audio unit BOSE speaker amp. Connector Terminal Connector Terminal M43 1 B75 29 Yes 2 30 3 27 4 28 - Check continuity between audio unit harness connector terminals and ground.TERMINAL CONTINUITY CHART
Terminals Continuity Audio unit - Connector Terminal M43 1 Ground No 2 3 4
OK or NG
OK: GO TO 4.
NG:
- Check connector housings for disconnected or loose terminals.
- Repair harness or connector.
- FRONT SPEAKER SIGNAL CHECK
- Connect audio unit connector and BOSE speaker amp. connector.
- Turn ignition switch to ACC.
- Push "POWER" switch.
- Check the signal between audio unit harness connector terminals with CONSULT-II or oscilloscope.TERMINAL SIGNAL CHART
Terminals Condition Reference signal (+) (-) Connector Terminal Connector Terminal M43 2 M43 1 Receive audio signal 4 3
OK or NG
OK: Replace BOSE speaker amp. Refer to "BOSE SPEAKER AMP. ".
NG: Replace audio unit. Refer to "REMOVAL AND INSTALLATION ".