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 automatic back door control module 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 automatic back door control module.

Check the resistance between the automatic back door control module harness connector terminals.

Automatic back door control module harness connector			Resistance (Ohm)
Connector No.	Terminal No.
B55	24	12	Approx. 54 - 66

Is the measurement value within the specification?

YES

GO TO 3.

Replace the body harness.

CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the automatic back door control module. Refer to Diagnosis Procedure .

Is the inspection result normal?

YES

Replace the automatic back door control module. Refer to Removal and Installation .

YES

Error was detected in the automatic back door control module branch line.

NO

Repair the power supply and the ground circuit.