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 FUSE

Check that the following fuses are not blown.

Terminal No.	Signal name	Fuse No.
7	ACC power supply	9 (10 A)
19	Battery power supply	20 (20 A)

Are the fuses blown?

YES

Replace the blown fuse after repairing the affected circuit.

GO TO 2.

CHECK POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect audio unit connector M50.

Check voltage between audio unit connector M50 and ground.

Audio unit		Ground	Condition	Voltage (Approx.)
Connector	Terminal
M50	7	--	Ignition switch: ON	Battery voltage
	19		Ignition switch: OFF

Is the inspection result normal?

YES

GO TO 3.

Repair or replace harness or connectors.

CHECK GROUND CIRCUIT

Turn ignition switch OFF.
Disconnect audio unit connectors M82.

Check continuity between audio unit connectors and ground.

Audio unit		Ground	Continuity
Connector	Terminal
M50	20	--	Yes
M82	48 (For passenger van?

Is the inspection result normal?

YES

Inspection End.

Repair or replace harness or connectors.