DTC Diagnosis Procedure

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

CHECK POWER SUPPLY

Turn ignition switch ON.

Check voltage between main power window and door lock/unlock switch connector D7 terminals 9, 13 and ground.

Main power window and door lock/unlock switch		Ground	Voltage (approx.)
Connector	Terminal
D7	9	--	Battery voltage
	13

Is the inspection result normal?

YES

GO TO 3

GO TO 2

CHECK POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect BCM connector M20 and main power window and door lock/unlock switch connector.

Check continuity between BCM connector M20 terminals 68, 69 and main power window and door lock/unlock switch connector D7 terminals 13, 9.

BCM		Main power window and door lock/unlock switch		Continuity
Connector	Terminal	Connector	Terminal
M20	68	D7	13	Yes
	69		9

Check continuity between BCM connector M20 terminals 68, 69 and ground.

BCM		Ground	Continuity
Connector	Terminal
M20	68	--	No
	69

Is the inspection result normal?

YES

Replace BCM. Refer to Removal and Installation .

Repair or replace harness.

CHECK GROUND CIRCUIT

Turn ignition switch OFF.
Disconnect main power window and door lock/unlock switch connector.

Check continuity between main power window and door lock/unlock switch connector D7 terminal 10 and ground.

Main power window and door lock/unlock switch		Ground	Continuity
Connector	Terminal
D7	10	--	Yes

Is the inspection result normal?

YES

Inspection End.

Repair or replace harness.