MICROPHONE: Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

CHECK POWER SUPPLY CIRCUIT

Check voltage between microphone harness connector R109 terminal 4 and ground.

(+)		(-)	Value (Approx.)
Connector	Terminal	(-)	Value (Approx.)
R109	4	Ground	5V

Fig 1: Checking Power Supply Circuit Voltage

Courtesy of NISSAN NORTH AMERICA, INC.

Is approximately 5V present?

YES: GO TO 3.

NO: GO TO 2.

CHECK POWER SUPPLY CIRCUIT (CONTINUITY)

Turn ignition switch OFF.
Disconnect microphone and AV control unit harness connectors.

Check continuity between microphone harness connector R109 terminal 4 and AV control unit harness connector M165 terminal 60.

Microphone		AV control unit		Continuity
Connector	Terminal	Connector	Terminal	Continuity
R109	4	M165	60	Yes

Check continuity between microphone harness connector R109 terminal 4 and ground.

Microphone		-	Continuity
Connector	Terminal	-	Continuity
R109	4	Ground	No

Are the continuity test results as specified?

YES: Replace the AV control unit. Refer to "REMOVAL AND INSTALLATION ".

NO: Repair harness or connector.

CHECK GROUND CIRCUIT

Turn ignition switch OFF.
Disconnect microphone harness connector R109 and AV control unit harness connector M165.

Check continuity between microphone harness connector R109 terminal 2 and AV control unit harness connector M165 terminal 75.

Microphone		AV control unit		Continuity
Connector	Terminal	Connector	Terminal	Continuity
R109	2	M165	75	Yes

Does continuity exist?

YES: Inspection End.

NO: Repair harness or connector.