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 (connector side and harness side).
  - Harness connector E152
  - Harness connector M31
Is the inspection result normal?

YES

GO TO 2.

NO

Repair the terminal and connector.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Disconnect the following harness connectors.
- ABS actuator and electric unit (control unit)
- Harness connectors E152 and M31

Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the harness connector.

USA and Canada

ABS actuator and electric unit (control unit) harness connector		Harness connector		Continuity
Connector No.	Terminal No.	Connector No.	Terminal No.
E168	19	E152	36G	Existed
	30		35G	Existed

Is the inspection result normal?

YES

GO TO 3.

Repair the main line between the ABS actuator and electric unit (control unit) and the harness connector E152.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Disconnect the connector of 3CH CAN gateway.

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

Harness connector		3CH CAN gateway harness connector		Continuity
Connector No.	Terminal No.	Connector No.	Terminal No.
M31	36G	M6	1	Existed
	35G		2	Existed

Is the inspection result normal?

YES

Check CAN system type decision again.

YES

Error was detected in the main line between the ABS actuator and electric unit (control unit) and the 3CH CAN gateway.

Repair the main line between the harness connector M31 and the 3CH CAN gateway.