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 terminals and connectors of the AWD control unit for damage, bend and loose connection (unit side and connector side).
Is the inspection result normal?

YES

GO TO 2.

NO

Repair the terminal and connector.

CHECK HARNESS FOR OPEN CIRCUIT

Disconnect the connector of AWD control unit.

Check the resistance between the AWD control unit harness connector terminals.

AWD control unit harness connector			Resistance (Ohm)
Connector No.	Terminal No.
B67	8	16	Approx. 54 - 66

Is the measurement value within the specification?

YES

GO TO 3.

Repair the AWD control unit branch line.

CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the AWD control unit. Refer to Diagnosis Procedure .

Is the inspection result normal?

YES

Replace the AWD control unit. Refer to Removal and Installation .

YES

Error was detected in the AWD control unit branch line.

NO

Repair the power supply and the ground circuit.