Nissan Altima 2007-2012 Service Manual: 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 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 B126 (A) and microphone harness connector R7 (B).

4. Check continuity between Bluetooth control unit harness connector B126 (A) and ground.

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? YES >> GO TO 3

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

3.CHECK MICROPHONE SIGNAL

Check signal between Bluetooth control unit harness connector B126 terminals 7 and 8.

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

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

    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 U ...

    Other materials:

    Multiport fuel injection system
    System Diagram System Description INPUT/OUTPUT SIGNAL CHART *1: This sensor is not used to control the engine system under normal conditions. *2: This signal is sent to the ECM through CAN communication line. *3: ECM determines the start signal status by the signals of engine speed and ...

    Condenser
    Removal and Installation - Coupe REMOVAL 1. Remove the rear seat cushion and the rear seatback. Refer to SE-25, "Removal and Installation". 2. Remove the rear kicking plate, rear wheel well garnish and the rear pillar finisher. Refer to INT-19, "Removal and Installation&q ...

    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) ...