Nissan Altima (L32) 2007-2012 Service Manual ≻ Audio, visual & navigation system bose audio without navigation ≻ Component diagnosis ≻ Power supply and ground circuit (sedan) ≻ Microphone

Nissan Altima (L32) 2007-2012 Service Manual: Microphone

Diagnosis Procedure

1.CHECK POWER SUPPLY CIRCUIT (MICROPHONE SIDE)

Check voltage between microphone harness connector and ground.

Is proper voltage present? YES >> GO TO 4

NO >> GO TO 2

2.CHECK POWER SUPPLY CIRCUIT (CONTINUITY)

1. Turn ignition switch OFF.

2. Disconnect Bluetooth control unit and microphone connectors.

3. Check continuity between microphone harness connector R7 (A) terminal 4 and Bluetooth control unit harness connector B126 (B) terminal 29.

4. Check continuity between microphone harness connector R7 (A) terminal 4 and ground.

Are continuity results as specified? YES >> GO TO 3

NO >> Repair harness or connector.

3.CHECK POWER SUPPLY CIRCUIT (BLUETOOTH CONTROL UNIT SIDE)

1. Connect Bluetooth control unit connector.

2. Turn ignition switch ON.

3. Check voltage between Bluetooth control unit harness connector and ground.

Is proper voltage present? YES >> Inspection End.

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

4.CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect Bluetooth control unit and microphone connectors.

3. Check continuity between microphone harness connector R7 terminal 2 and Bluetooth control unit harness connector B126 terminal 8.

Is continuity present? YES >> Inspection End.

NO >> Repair harness or connector.

Bluetooth control unit

Diagnosis Procedure 1.CHECK FUSE Check that the following fuses of the Bluetooth control unit are not blown. Are the fuses OK? YES >> GO TO 2 NO >> Be sure to eliminate cause ...

Door speaker (coupe)

Description The audio unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the door speakers using the audio signal circuit ...

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