Nissan Maxima Service and Repair Manual: Front door speaker

Description

The audio unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the front door speakers using the audio signal circuits.

Diagnosis Procedure

1.CONNECTOR CHECK

Check the audio unit, BOSE speaker amp. and speaker connectors for the following:

• Proper connection
• Damage
• Disconnected or loose terminals

2.HARNESS CHECK

1. Disconnect BOSE speaker amp. connector B109 and suspect speaker connector.
2. Check continuity between BOSE speaker amp. harness connector B109 (A) and suspect speaker harness connector (B).
3. Check continuity between BOSE speaker amp. harness connector B109 (A) and ground.

3.FRONT DOOR SPEAKER SIGNAL CHECK

1. Connect BOSE speaker amp. connector B109 and suspect speaker connector.
2. Turn ignition switch to ACC.
3. Push POWER switch.
4. Check the signal between BOSE speaker amp. harness connector B109 terminals with CONSULT or oscilloscope.

4.HARNESS CHECK

1. Disconnect audio unit connector M132 and BOSE speaker amp.

   connector B109.

2. Check continuity between audio unit harness connector M132 (A) and BOSE speaker amp. harness connector B109 (B).
3. Check continuity between audio unit harness connector M132 (A) and ground.

5.FRONT DOOR 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 between audio unit harness connector terminals with CONSULT or oscilloscope.