Nissan Maxima Service and Repair Manual: Subwoofer
Description
The audio unit sends audio signals to the subwoofer amp. The subwoofer amp.
amplifies the audio signals before sending them to the subwoofers using the
audio signal circuits.
Diagnosis Procedure
1.CONNECTOR CHECK
Check the audio unit, subwoofer amp. and subwoofer connectors for the
following:
- Proper connection
- Damage
- Disconnected or loose terminals
2.HARNESS CHECK

- Disconnect subwoofer amp. connector B21 and suspect subwoofer
connector.
- Check continuity between subwoofer amp. harness connector B21
(A) and suspect subwoofer harness connector (B).
- Check continuity between subwoofer harness connector B21 (A) and
ground.


3.REAR SUBWOOFER SIGNAL CHECK

- Connect subwoofer amp. connector B21 and suspect subwoofer connector.
- Turn ignition switch to ACC.
- Push POWER switch.
- Check the signal between subwoofer amp. harness connector B21
terminals with CONSULT or oscilloscope.

4.HARNESS CHECK

- Disconnect audio unit connector M133 and subwoofer speaker amp.
connector B21.
- Check continuity between audio unit harness connector M133 (A)
and subwoofer amp. harness connector B21 (B).
- Check continuity between audio unit harness connector M133 (A)
terminal and ground.


5.SUBWOOFER SIGNAL CHECK

- Connect audio unit connector M133 and subwoofer amp. connector B21.
- Turn ignition switch to ACC.
- Push "POWER" switch.
- Check the signal between audio unit harness connector M133
terminals with CONSULT or oscilloscope.

Description
The audio unit sends audio signals to the rear door speakers using the rear
door speaker circuits.
Diagnosis Procedure
1.CONNECTOR CHECK
Check the audio unit and speaker connectors f ...
Description
When one of the steering wheel audio control switches is pushed, the
resistance in steering switch circuit changes depending on which button is
pushed.
Diagnosis Procedure
1.CHECK S ...
Other materials:
ECU diagnosis information
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)
Reference Value
VALUES ON THE DIAGNOSIS TOOL
TERMINAL LAYOUT
Fail Safe
CAN COMMUNICATION CONTROL
When CAN communication with ECM and BCM is impossible, IPDM E/R performs
fail-safe control. After CA ...
Bose speaker AMP
Reference Values
TERMINAL LAYOUT
PHYSICAL VALUES
...
Trunk lid opener
Wiring Diagram
...