Diagnosis Procedure

WARNING: This page is about a different car, the 2019 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).
  - Side radar LH
  - Harness connector B400
  - Harness connector B77
Is the inspection result normal?

YES

GO TO 2.

NO

Repair the terminal and connector.

CHECK HARNESS FOR OPEN CIRCUIT

Disconnect the connector of side radar LH.

Check the resistance between the side radar LH harness connector terminals.

Side radar LH harness connector			Resistance (Ohm)
Connector No.	Terminal No.
B416	4	3	Approx. 54 - 66

Is the measurement value within the specification?

YES

GO TO 3.

Repair the side radar LH branch line.

CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the side radar LH. Refer to Diagnosis Procedure .

Is the inspection result normal?

YES

Replace the side radar LH. Refer to Removal and Installation .

YES

Error was detected in the side radar LH branch line.

NO

Repair the power supply and the ground circuit.