Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan NV3500 HD, 2018 Nissan NV2500 HD, and 2018 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

CHECK AUX IN JACK HARNESS CONTINUITY

Turn ignition switch OFF.
Disconnect audio unit connector M89 and AUX in jack connector M67.

Check continuity between audio unit connector M89 and AUX in jack connector M67.

Audio unit		AUX in jack		Continuity
Connector	Terminal	Connector	Terminal
M89	56	M67	1	Yes
	54		3
	55		4

Check continuity between audio unit connector M89 and ground.

Audio unit		-	Continuity
Connector	Terminal
M89	55	Ground	No
	56

Is the inspection result normal?

YES

Replace the AUX in jack. Refer to Removal and Installation .

Repair or replace harness or connectors.