Nissan Versa (N17): Microphone signal circuit

Diagnosis Procedure

Regarding Wiring Diagram information, refer to AV "Wiring Diagram".

1.CHECK MICROPHONE SIGNAL CIRCUIT CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect AV control unit connector M71 and microphone connector R15.

3. Check continuity between AV control unit connector M71 and microphone connector R15.

4. Check continuity between AV control unit connector M71 and ground.

Is inspection result normal?

YES >> GO TO 2.

NO >> Repair or replace harness or connectors.

2.CHECK MICROPHONE VCC VOLTAGE

1. Connect AV control unit connector M71.

2. Turn ignition switch ON.

3. Check voltage between terminals of AV control unit connector M71.

Is the inspection result normal?

YES >> GO TO 3.

NO >> Replace AV control unit. Refer to AV "Removal and Installation".

3.CHECK MICROPHONE SIGNAL

1. Connect microphone connector.

2. Check signal between terminals of AV control unit connector M71.

Is the inspection result normal?

YES >> Replace AV control unit. Refer to AV "Removal and Installation".

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