Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
  - Data link connector
  - 3CH CAN gateway
Is the inspection result normal?

YES

GO TO 2.

NO

Repair the terminal and connector.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Disconnect the connector of 3CH CAN gateway.

Check the continuity between the 3CH CAN gateway harness connector terminals.

3CH CAN gateway harness connector			Continuity
Connector No.	Terminal No.
M6	3	11	Existed
	4	12	Existed

Is the inspection result normal?

YES

GO TO 3.

Check the harness and repair the root cause (diagnosis CAN communication circuit side).

CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Data link connector			Resistance (Ohm)
Connector No.	Terminal No.
M22	6	14	Approx. 54 - 66

Is the measurement value within the specification?

YES

Check CAN system type decision again.

YES

Error was detected in the data link connector branch line circuit.

Repair the data link connector branch line.