Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. 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 B33
  - Harness connector B245
  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.
- Side radar LH
- Harness connectors B33 and B245

Check the continuity between the side radar LH harness connector and the harness connector.

Side radar LH harness connector		Harness connector		Continuity
Connector No.	Terminal No.	Connector No.	Terminal No.	Continuity
B52	4	B33	13	Existed
B52	3	B33	14	Existed

Is the inspection result normal?

YES: GO TO 3.

NO: Repair the main line between the side radar LH and the harness connector B33.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Disconnect the connector of side radar RH.

Check the continuity between the harness connector and the side radar RH harness connector.

Harness connector		Side radar RH harness connector		Continuity
Connector No.	Terminal No.	Connector No.	Terminal No.	Continuity
B245	13	B252	4	Existed
B245	14	B252	3	Existed

Is the inspection result normal?

YES (Present error): Check CAN system type decision again.

YES (Past error): Error was detected in the main line between the side radar LH and the side radar RH.

NO: Repair the main line between the harness connector B245 and the side radar RH.