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 HARNESS CONTINUITY (OPEN CIRCUIT)

Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Disconnect the following harness connectors.
- ECM
- Front air control

Check the continuity between the front air control harness connector and the data link connector.

With manual A/C

Front air control harness connector		Data link connector		Continuity
Connector No.	Terminal No.	Connector No.	Terminal No.
M49	21	M22	6	Existed
	22		14	Existed

With auto A/C

Front air control harness connector		Data link connector		Continuity
Connector No.	Terminal No.	Connector No.	Terminal No.
M53	21	M22	6	Existed
	22		14	Existed

Is the inspection result normal?

YES

Check CAN system type decision again.

YES

Error was detected in the main line between the front air control and the data link connector.

Repair the main line between the front air control and the data link connector.