Power Supply and Ground Circuit Check for Bluetooth Control Unit

WARNING: This page is about a different car, the 2007 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSES

Make sure the following fuses for the Bluetooth control unit are not blown.

FUSES SPECIFICATION

Terminals		Ignition Switch	Fuse No.
Connector	Terminal	Ignition Switch	Fuse No.
B506	1	All positions	31
	2	ACC/ON	4
	3	ON/START	12

OK or NG

OK: GO TO 2.

NG: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to "POWER SUPPLY ROUTING CIRCUIT ".

CHECK POWER SUPPLY CIRCUIT

Disconnect Bluetooth control unit connector B506.

Check voltage between connector terminals and ground as follows.

TERMINALS VOLTAGE CHART

Terminals			Ignition switch position
(+)		(-)	OFF	ACC	ON
Connector	Terminal	(-)	OFF	ACC	ON
B506	1	Ground	Battery voltage	Battery voltage	Battery voltage
	2		0V	Battery voltage	Battery voltage
	3		0V	0V	Battery voltage

Fig 1: Checking Voltage Between Connector Terminals And Ground

OK or NG

OK: GO TO 3.

NG: Check harness for open between Bluetooth control unit and fuse.

CHECK GROUND CIRCUITS

Turn ignition switch OFF.

Check continuity between the following Bluetooth control unit terminals and ground.

TERMINALS CONTINUITY CHART

Terminals			Continuity
Connector	Terminal	-	Continuity
B506	4	Ground	Yes
	20
	21

OK or NG

OK: Inspection End.

NG: Repair or replace harness.

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