Nissan Maxima Service and Repair Manual: Steering switch
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 STEERING SWITCH RESISTANCE

- Disconnect steering switch connector M88.
- Check resistance between steering switch connector terminals.

2.CHECK HARNESS BETWEEN COMBINATION SWITCH (SPIRAL CABLE) AND BLUETOOTH
CONTROL UNIT
- Turn ignition switch OFF.
- Disconnect Bluetooth control unit connector B126 and combination
switch (spiral cable) connector M30
- Check continuity between Bluetooth control unit harness connector
B126 and combination switch (spiral cable) harness connector M30.
- Check continuity between Bluetooth control unit connector B126 and
ground.


3.CHECK HARNESS BETWEEN COMBINATION SWITCH (SPIRAL CABLE) AND AUDIO UNIT
- Disconnect audio unit connector M147.
- Check continuity between audio unit harness connector M147 and
combination switch (spiral cable) harness connector M30.
- Check continuity between audio unit connector M147 and ground.


4.COMBINATION SWITCH (SPIRAL CABLE) CHECK

- Check continuity between combination switch (spiral cable) harness
connector M30 (A) and M88 (B).

5.CHECK HARNESS BETWEEN BLUETOOTH CONTROL UNIT AND AUDIO UNIT
- Disconnect audio unit connector M133.
- Check continuity between Bluetooth control unit harness connector
B126 and audio unit harness connector M133.
- Check continuity between Bluetooth control unit connector B126 and
ground.


6.CHECK AUDIO UNIT VOLTAGE
- Connect audio unit harness connector M133 and Bluetooth control
unit harness connector B126.
- Turn ignition switch ON.
- Check voltage between audio unit harness connector M133 terminals.

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.
Diagnos ...
Description
Voice signals are transmitted from the microphone to the Bluetooth control
unit using the microphone signal circuits.
Diagnosis Procedure
1.CHECK HARNESS BETWEEN BLUETOOTH CONTROL UNI ...
Other materials:
Meter
Wiring Diagram
...
Emission Control System Maintenance
Drive belts*:
Check engine drive belts for wear, fraying or
cracking and for proper tension. Replace any
damaged drive belts.
Engine air filter:
Replace at specified intervals. When driving for
prolonged periods in dusty conditions,
check/replace the filter more frequently.
Engine coolant*:
...
Hazard switch
Component Function Check
1.CHECK HAZARD SWITCH SIGNAL BY CONSULT
CONSULT DATA MONITOR
Turn ignition switch ON.
Select "HAZARD SW" of BCM (FLASHER) DATA MONITOR item.
With operating the hazard switch, check the monitor status.
Diagnosis Procedure
1.CHECK HAZARD SWITCH SIGNAL INPUT
...