Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.

CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN

Turn the ignition switch OFF.
Disconnect the BCM and combination switch connectors.
NOTE: BCM connector disconnects M123 only.

Check continuity between BCM harness connector and combination switch harness connector.

TERMINALS CONTINUITY REFERENCE CHART

System	BCM		Combination switch		Continuity
System	Connector	Terminal	Connector	Terminal	Continuity
OUTPUT 1	M123	143	M103	12	Existed
OUTPUT 2		144		14
OUTPUT 3		145		5
OUTPUT 4		146		2
OUTPUT 5		142		8

Does continuity exist?

YES: GO TO 2.

NO: Repair the harnesses or connectors.

CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT

Check for continuity between BCM harness connector and ground.

TERMINALS CONTINUITY REFERENCE CHART

System	BCM		Ground	Continuity
	Connector	Terminal
OUTPUT 1	M123	143		Not existed
OUTPUT 2		144
OUTPUT 3		145
OUTPUT 4		146
OUTPUT 5		142

Does continuity exist?

YES: Repair the harnesses or connectors.

NO: GO TO 3.

CHECK COMBINATION SWITCH INTERNAL CIRCUIT

Connect the combination switch connector.
Turn ON any switch in the system that is malfunctioning.

Check voltage between combination switch harness connector and ground.

NOTE: Check that the combination switch outputs a signal from combination switch input system.

TERMINALS VOLTAGE REFERENCE CHART

System	Terminals			Value (Approx.)
	(+)		(-)
	Combination switch		Ground
	Connector	Terminal
OUTPUT 1	M103	12		1.4 V
OUTPUT 2		14
OUTPUT 3		5
OUTPUT 4		2
OUTPUT 5		8

Is the measurement value normal when any of the switches is turned ON?

YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

NO: Replace the combination switch.