Nissan Altima 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".
Steering switch
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 ...Camera image signal circuit (rear view camera to camera control unit)(coupe)
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:
DLC branch line circuit
Diagnosis Procedure
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the data link connector for damage,
bend and loose connection
(connector side and harness side) ...
Cylinder block
Disassembly and Assembly
1. Cylinder block
2. O-ring
3. Crankshaft position sensor (POS)
4. Knock sensor
5. Cylinder block heater (if equipped)
6. Lower cylinder block
7. Lower cylinder block bolt
8. Snap ring
9. Connecting rod
10. Connecting rod bearing
11. Connecting rod bearing cap
...
CVT fluid
RE0F09B
Inspection
CHECKING CVT FLUID
Fluid level should be checked with the fluid warmed up to 50 to 80°C (122 to
176°F). The fluid level check procedure
is as follows:
1. Check for fluid leakage.
2. With the engine warmed up, drive the vehicle in an urban area.
When ambient t ...