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 OPTICAL SENSOR GROUND CIRCUIT

Turn the ignition switch OFF.
Disconnect BCM connector M18 and optical sensor connector M302.

Check continuity between BCM harness connector M18 (A) terminal 18 and optical sensor harness connector M302 (B) terminal 3.

A		B		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M18	18	M302	3	Yes

Check continuity between BCM harness connector M18 (A) terminal 18 and ground.

Fig 1: Checking Continuity Between BCM Harness Connector M18 Terminal 18 And Ground

Courtesy of NISSAN NORTH AMERICA, INC.

A		-	Continuity
Connector	Terminal	-	Continuity
M18	18	Ground	No

Are continuity test results as specified?

YES: GO TO 2.

NO: Repair harness or connector.

CHECK OPTICAL SENSOR SIGNAL CIRCUIT

Check continuity between BCM harness connector M20 (A) terminal 58 and optical sensor harness connector M302 (B) terminal 4.

A		B		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M20	58	M302	4	Yes

Check continuity between BCM harness connector M20 (A) terminal 58 and ground.

A		-	Continuity
Connector	Terminal	-	Continuity
M20	58	Ground	No

Are the continuity test results as specified?

YES: Replace the optical sensor. Refer to "REMOVAL AND INSTALLATION ".

NO: Repair harness or connector.

Fig 2: Checking Continuity Between BCM Harness Connector M20 Terminal 58 And Ground

Courtesy of NISSAN NORTH AMERICA, INC.