Nissan Altima 2007-2012 Service Manual: Microphone signal circuit (coupe)

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 UNIT AND MICROPHONE

1. Turn ignition switch OFF.

2. Disconnect Bluetooth control unit connector and microphone connector.

3. Check continuity between Bluetooth control unit harness connector B55 (A) and microphone harness connector R7 (B).


4. Check continuity between Bluetooth control unit harness connector B55 (A)


4. Check continuity between Bluetooth control unit harness connector B55 (A) and ground.

Are the continuity test results as specified?


Are the continuity test results as specified? YES >> GO TO 2

NO >> Repair harness or connector.

2.CHECK MICROPHONE POWER SUPPLY

1. Connect Bluetooth control unit connector and microphone connector.

2. Turn ignition switch ON.

3. Check voltage between microphone harness connector R7 terminal 4 and ground.


Is voltage reading approx. 5 volts?


Is voltage reading approx. 5 volts? YES >> GO TO 3

NO >> Replace Bluetooth control unit. Refer to AV-235, "Removal and Installation - Coupe".

3.CHECK MICROPHONE SIGNAL

Check signal between Bluetooth control unit harness connector B55 terminals 7 and 8.



Are voltage readings as specified?


Are voltage readings as specified? YES >> Replace Bluetooth control unit. Refer to AV-235, "Removal and Installation - Coupe".

NO >> Replace microphone. Refer to AV-233, "Removal and Installation".

    Sound signal circuit (sedan)
    SATELLITE RADIO TUNER  Description Left and right channel audio signals are supplied from the satellite radio tuner to the audio unit through the sound signal circuits. Diagnosis Procedur ...

    Microphone signal circuit (sedan)
    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 UN ...

    Other materials:

    BCM
    Diagnosis Procedure 1. CHECK FUSE AND FUSIBLE LINK Check if the following BCM fuse or fusible link are blown. Is the fuse or fusible link blown? YES >> Replace the blown fuse or fusible link after repairing the affected circuit. NO >> GO TO 2 2. CHECK POWER SUPPLY CIRCUIT 1 ...

    Throttle valve closed position learning
     Description Throttle Valve Closed Position Learning is a function of ECM to learn the fully closed position of the throttle valve by monitoring the throttle position sensor output signal. It must be performed each time harness connector of electric throttle control actuator or ECM is d ...

    P0031, P0032 A/F sensor 1 heater
    Description SYSTEM DESCRIPTION The ECM performs ON/OFF duty control of the A/F sensor 1 heater corresponding to the engine operating condition to keep the temperature of A/F sensor 1 element at the specified range. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.PRECONDITI ...