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 BACK DOOR REQUEST SWITCH INPUT SIGNAL

Turn ignition switch OFF.
Disconnect back door opener switch connector.

Check voltage between back door opener switch harness connector and ground.

(+)		(-)	Voltage (Approx.)
Back door opener switch
Connector	Terminal
D559	4	Ground	Battery voltage

Is the inspection result normal?

YES

GO TO 3.

GO TO 2.

CHECK BACK DOOR REQUEST SWITCH CIRCUIT

Disconnect BCM connector.

Check continuity between BCM harness connector and back door opener switch harness connector.

BCM		Back door opener switch		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M20	83	D559	4	Yes

Check continuity between BCM harness connector and ground.

BCM		Ground	Continuity
Connector	Terminal
M20	83		No

Is the inspection result normal?

YES

Replace BCM. Refer to Removal and Installation .

Repair or replace harness.

CHECK BACK DOOR REQUEST SWITCH GROUND CIRCUIT

Check continuity between back door opener switch harness connector and ground.

Back door opener switch		Ground	Continuity
Connector	Terminal
D559	3		Yes

Is the inspection result normal?

YES

GO TO 4.

Repair or replace harness.

CHECK BACK DOOR REQUEST SWITCH
Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 5.

NO

Replace back door opener switch. Refer to Removal and Installation .
CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident .

Inspection End.