Nissan Altima 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 B55 (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 - Coupe".

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.

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