Nissan Altima (L32) 2007-2012 Service Manual: Microphone signal circuit
Description
Power is supplied to the microphone from the AV control unit. The microphone
transmits voice signals to the
AV control unit.
Diagnosis Procedure
1.CHECK CONTINUITY BETWEEN AV CONTROL UNIT AND MICROPHONE CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector M46 and microphone connector R7.
3. Check continuity between AV control unit harness connector
M46 (A) terminals 45, 46, 47 and microphone harness connector
R7 (B) terminals 1, 2, 4.
4. Check continuity between AV control unit harness connector
M46 (A) terminals 45, 46, 47 and ground.
Is inspection result OK?
YES >> GO TO 2
NO >> Repair harness or connector.
2.CHECK MICROPHONE VCC VOLTAGE
1. Connect AV control unit connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit harness connector M46
terminals 46 and 47.
Is inspection result OK?
YES >> GO TO 3
NO >> Replace AV control unit. Refer to AV-437, "Removal and
Installation".
3.CHECK MICROPHONE SIGNAL
1. Connect microphone connector.
2. Check signal between AV control unit harness connector M46
terminals 45 and 47.
Is inspection result OK?
YES >> Replace AV control unit. Refer to AV-437, "Removal and Installation".
NO >> Replace microphone. Refer to AV-456, "Removal and Installation".
Description
When one of the steering wheel audio control switches is pushed, the
resistance in the steering switch circuit
changes depending on which button is pushed.
Diagnosis Procedure
1.CH ...
Description
Rear view camera images are transmitted to the rear view camera control unit
using the camera image signal
circuits.
Diagnosis Procedure
1.CHECK CAMERA IMAGE SIGNAL CIRCUIT CONTINUI ...
Other materials: NISSAN Advanced Air Bag System
Top tether strap anchor
Roof-mounted curtain side-impact and
rollover supplemental air bag inflators
Rear seat belts
Roof-mounted curtain side-impact and
rollover supplemental air bag
Front seat-mounted side-impact supplemental
air bag
Head restraints/headrests
Front seat belts
Side-imp ...
Tachometer
5 inch (13 cm) Type A (if so equipped)
The tachometer indicates engine speed in
revolutions per minute (rpm).
Do not rev the engine into the red zone 1.
7 inch (18 cm) Type B (if so equipped)
CAUTION
When engine speed approaches the
red zone, shift to a higher gear or reduce
engine speed. Operati ...
Oil control system (if so equipped)
The oil control system can be accessed in
the Maintenance portion of the vehicle information
display settings.
Engine oil information informs the distance
to oil change. Never exceed one year or
7,500 miles (12000 km) between oil change
intervals for the 2.0L 4 cylinder (KR20DDET
engine model) or 1 ...