Nissan Maxima Service and Repair Manual: Front door speaker
Description
The audio unit sends audio signals to the front door speakers using the front
door speaker circuits.
Diagnosis Procedure
1.CONNECTOR CHECK
Check the audio unit and speaker connectors for the following:
- Proper connection
- Damage
- Disconnected or loose terminals
2.HARNESS CHECK

- Disconnect audio unit connector M133 (A) and suspect speaker
connector (B).
- Check continuity between audio unit harness connector M133 (A)
terminal and suspect speaker harness connector (B) terminal.
- Check continuity between audio unit harness connector M133 (A)
terminal and ground.
3.FRONT DOOR SPEAKER SIGNAL CHECK
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- Connect audio unit connector and front speaker connector.
- Turn ignition switch to ACC.
- Push POWER switch.
- Check the signal between audio unit harness connector terminals with
CONSULT or oscilloscope.
POWER SUPPLY AND GROUND CIRCUIT AUDIO UNIT
AUDIO UNIT : Diagnosis Procedure
1.CHECK FUSES
Check that the following fuses are not blown.
2.POWER SUPPLY CIRCUIT CHECK
Disconnect audio unit ...
Description
The audio unit sends audio signals to the tweeters using the front door
speaker circuits.
Diagnosis Procedure
1.CONNECTOR CHECK
Check the audio unit and speaker connectors for ...
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AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure
1.CHECK FUSES
Check that the following fuses of the AV control unit are not blown.
2.POWER SUPPLY CIRCUIT CHECK
Disconnect AV control unit connectors M115 and M119.
Check voltage between the AV control unit connectors M115 and
...
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