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: Chassis Control (if so equipped)
The chassis control is an electric control
module that includes the following functions:
Intelligent Trace Control
Active Ride Control
Intelligent Trace Control (I-TC)
This system senses driving based on the
driver’s steering and acceleration/braking
patterns, and controls brake pressure at
in ...
Tire chains
CAUTION
Only certain SAE class "S" tire chains
can be used on this vehicle. Using the
wrong Class "S" chains on this vehicle
will cause damage to the vehicle. If you
plan to use tire chains/cables, you
should use a tire chain that meets the
minimum clearances for your vehicle.
Use of tire chains ma ...
All-Wheel Drive (AWD) (if so equipped)
If any malfunction occurs in the AWD system
while the engine is running, messages
are displayed in the meter.
If the AWD error warning message is displayed,
there may be a malfunction in the
AWD system. Reduce vehicle speed and
have your vehicle checked. It is recommended
that you visit a NISSAN de ...