Warning Chime System (Circuit Diagnosis)
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 COMBINATION METER INPUT SIGNAL
- Turn ignition switch ON.
- Check voltage between combination meter harness connector and ground.
Combination meter
Condition
Voltage
(Approx.)
Connector
Terminals
M24
9
Ground
When driver seat belt is fastened
Battery voltage
When driver seat belt is unfastened
0 V
Is the inspection result normal?
YES
Replace combination meter. Refer to Removal and Installation .
NO
GO TO 2.
- CHECK SEAT BELT BUCKLE SWITCH LH CIRCUIT
- Turn ignition switch OFF.
- Disconnect combination meter harness connector and seat belt buckle switch LH harness connector.
- Check continuity between combination meter harness connector and seat belt buckle switch LH harness connector.
Combination meter
Seat belt buckle switch LH
Continuity
Connector
Terminal
Connector
Terminal
M24
9
B221
4
Yes
- Check continuity between combination meter harness connector and ground.
Combination meter
Ground
Continuity
Connector
Terminal
M24
9
No
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace harness or connector.
- CHECK SEAT BELT BUCKLE SWITCH LH GROUND CIRCUIT
Check harness continuity between seat belt buckle switch LH harness connector and ground.
Seat belt buckle switch LH
Ground
Continuity
Connector
Terminal
B221
3
Yes
Is the inspection result normal?
YES
Inspection End.
NO
Repair or replace harness or connector.