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 WARNING CHIME POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect back door warning chime connector.
Check voltage between back door warning chime harness connector and ground.

(+)		(-)	Voltage (Approx.)
Back door warning chime
Connector	Terminal
B402	1	Ground	Battery voltage

Is the inspection result normal?

YES

GO TO 3.

GO TO 2.

CHECK BACK DOOR WARNING CHIME OUTPUT SIGNAL CIRCUIT

Disconnect automatic back door control module connector.

Check continuity between automatic back door control module harness connector and back door warning chime harness connector.

Automatic back door control module		Back door warning chime		Continuity
Connector	Terminal	Connector	Terminal	Continuity
B56	37	B402	1	Yes

Check continuity between automatic back door control module harness connector and ground.

Automatic back door control module		Ground	Continuity
Connector	Terminal
B56	37		No

Is the inspection result normal?

YES

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

Repair or replace harness.

CHECK BACK DOOR WARNING CHIME GROUND CIRCUIT

Check continuity between back door warning chime harness connector and ground.

Back door warning chime		Ground	Continuity
Connector	Terminal
B402	2		Yes

Is the inspection result normal?

YES

GO TO 4.

Repair or replace harness.

CHECK BACK DOOR WARNING CHIME
Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 5.

NO

Replace back door warning chime. Refer to Removal and Installation .
CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident .

Inspection End.