1991 Honda Accord Seat Belt Light On
let us know what is going on.
There is a automatic seat belt warning module that goes out in these cars which makes the chime go off.
Here is a wiring diagram so you can see if you unplug it the chine should stop. Then run some tests to make sure the module is getting signal the belt is in place if it is the module is bad, you should replace it to be safe. There are some fuses that need to be checked as well.
Here is a guide and a diagram to help you get started.
https://www.2carpros.com/articles/how-to-check-wiring
and
https://www.2carpros.com/articles/how-to-use-a-voltmeter
and
https://www.2carpros.com/articles/how-to-check-a-car-fuse
Please run some tests and get back to us so we can continue helping you.
Cheers, Ken
Suggested Repair
Check the microswitch at the end of the automatic belt track that senses the belt-on position; it is a double switch that also stops the belt motor. Check related fuses and the automatic seat belt warning module. Unplugging the module should stop the chime; if the module is receiving a belt-in-place signal and the warning continues, replace the module.
Conversation Summary
A 1991 Honda Accord owner reported the seat belt warning light staying on or blinking and beeping even with the belt latched and the automatic belt fully retracted. One expert suggested checking the belt-position microswitch at the end of the belt track. Another owner with the same car asked where that track is located. A second expert said the automatic seat belt warning module commonly fails, advised checking fuses and wiring, and recommended replacing the module if it receives a proper belt-in-place signal but the chime continues.

