Symptom Related Diagnostic Procedures

THE SEAT BELT WARNING CONTINUES SOUNDING, OR DOES NOT SOUND





Description
- Seat belt warning does not sound even though driver seat belt is not fastened.
- Seat belt warning sounds even though driver seat belt is fastened.




Diagnosis Procedure
1.CHECK SEAT BELT WARNING LAMP
1. Turn ignition switch ON.
2. Check the operation of the seat belt warning lamp in the combination meter.

Seat belt fastened : OFF
Seat belt not fastened : ON

Is the inspection result normal?
YES - GO TO 2.
NO - GO TO 4.
2.CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
Check the buckle switch input signal with the "Data Monitor". Seat Belt Buckle Switch Signal Circuit.
Is the inspection result normal?
YES - Replace unified meter and A/C amp.
NO - GO TO 3.
3.CHECK SEAT BELT BUCKLE SWITCH CIRCUIT
Perform the check for the seat belt buckle switch circuit. Seat Belt Buckle Switch Signal Circuit.
Is the inspection result normal?
YES - Replace unified meter and A/C amp.
NO - Repair harness or connector.
4.CHECK SEAT BELT BUCKLE SWITCH UNIT
Perform a unit check for the seat belt buckle switch. Seat Belt Buckle Switch Signal Circuit.
Is the inspection result normal?
YES - Replace combination meter.
NO - Replace seat belt buckle. Removal And Installation.