BLUETOOTH CONTROL UNIT: Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM - WITHOUT NAVIGATION SYSTEM ".

CHECK FUSE

Check that the following fuses of the Bluetooth control unit are not blown.

Power source	Fuse No.
Battery	29
Ignition switch ACC or ON	4
Ignition switch ON or START	12

Are the fuses OK?

YES: GO TO 2

NO: Be sure to eliminate cause of malfunction before installing new fuse.

CHECK POWER SUPPLY CIRCUIT

Check voltage between Bluetooth control unit harness connector and ground.

(+)		(-)	OFF	ACC	ON
Connector	Terminal	(-)	OFF	ACC	ON
B124	1	Ground	Battery voltage	Battery voltage	Battery voltage
	2		0V	Battery voltage	Battery voltage
	3		0V	0V	Battery voltage

Fig 1: Checking Voltage Between Bluetooth Control Unit Connector Terminals 1, 2, 3 And Ground

Courtesy of NISSAN NORTH AMERICA, INC.

Are the voltage results as specified?

YES: GO TO 3

NO: Check harness between Bluetooth control unit and fuse.

CHECK GROUND CIRCUIT

Turn ignition switch OFF.
Disconnect Bluetooth control unit connector B124.

Check continuity between Bluetooth control unit harness connector and ground.

Connector	Terminal	-	Continuity
B124	4	Ground	Yes
	21
	22
	24

Fig 2: Checking Continuity Between Bluetooth Control Unit Connector Terminals And Ground

Courtesy of NISSAN NORTH AMERICA, INC.

Does continuity exist?

YES: Inspection End.

NO: Repair harness or connector.