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 STEP LAMP OUTPUT

WITH CONSULT

Turn ignition switch ON.
Select "STEP LAMP TEST" of BCM (INT LAMP) active test item.

While operating the test item, check voltage between BCM connector M20 terminal 62 and ground.

Connector	Terminal	-	STEP LAMP TEST	Voltage
M20	62	Ground	ON	0V
M20	62	Ground	OFF	Battery voltage

Fig 1: Checking Voltage Between BCM Connector M20 Terminal 62 And Ground

Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES: Step lamp control circuit is operating normally.

Fixed ON: GO TO 3

Fixed OFF: GO TO 2

CHECK STEP LAMP OPEN CIRCUIT

Turn ignition switch OFF.
Disconnect BCM connector M20 and front step lamp, rear step lamp and foot lamp connectors (if equipped).

Check continuity between BCM connector M20 (A) terminal 62 and step lamp connectors (B) terminal 2 and foot lamp connectors (C) terminal 2.

Connector	Terminal	Connector		Terminal	Continuity
M20 (A)	62	Front step lamp LH	D11 (B)	2	Yes
		Front step lamp RH	D109 (B)	2
		Rear step lamp LH	D206 (B)	2
		Rear step lamp RH	D306 (B)	2
		Foot lamp LH (if equipped)	M99 (C)	2
		Foot lamp RH (if equipped)	M100 (C)	2

Fig 2: Checking Step Lamp Open Circuit

Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES: Check step lamp or foot lamp for an open. If OK, replace BCM. Refer to "REMOVAL AND INSTALLATION ". If NG, replace step lamp or foot lamp. Refer to "REMOVAL AND INSTALLATION ".

NO: Repair harness or connectors.

CHECK STEP LAMP SHORT CIRCUIT

Turn ignition switch OFF.
Disconnect BCM connector M20, front step lamp, rear step lamp and foot lamp connectors (if equipped).

Check continuity between BCM connector M20 terminal 62 and ground.

Connector	Terminal	-	Continuity
M20	62	Ground	No

Fig 3: Checking Continuity Between BCM Connector M20 Terminal 62 And Ground

Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES: Check step lamp or foot lamp for a short circuit. If OK, replace BCM. Refer to "REMOVAL AND INSTALLATION ". If NG, replace step lamp or foot lamp. Refer to "REMOVAL AND INSTALLATION ".

NO: Repair the harness or connectors.