The switch inside the receiver part of the seat belt is sticking or worn out, try cleaning it with electrical contact cleaner, then lubricating with wd40. If that does not help you may need to replace the switch.
No, blowing the seat belt fuse on the 1994 Mazda truck will not affect how the seat belt works. It will cause the seat belt light to remain off even when the belt is not buckled.
With 2.5 engine it will be on the rear lower of back head. It is an electronic EGR valve with a 6pin plug going to it.
Take it to the Mazda dealership they can hook up a scantool and disable it.
You cant.
Trouble code P0421 means: Catalyst Efficiency Below Normal (Bank 1)
5 speed or automatic?
Check for a loose power steering belt.
I own a 1993 Mazda 323. I had the same problem with the automatic seatbelts. I found out that the problem is caused by a little round circuit. This circuit is in the middle consol where the seatbelts are stored (I believe it is attached behind the pulley of the seatbelt housing. It looks like Mazda is using some kind of conductive metal which is worn out by time. Since the metal on the circuit is worn, seatbelt safety circuit stays open and causes seatbelt alarm stay on. I just changed the driver's side with the passenger's side and beep went off. However, I would recommend you to contact the Mazda dealar and ask if you can have this part replaced.
More than likely incorrectly aligned or buckled pulley or overtightened or seized pully
Check out this site: http://www.clubprotege.com/wil/howto/seatbeltlight/
Mazda has a recall on their seatbelts for some models for this reason. ask a Mazda dealer if your model has the seatbelt recall. I believe the 92 mx3 has a recall for the auto seatbelts, but i am not sure about 93. Look into it though and they might fix it for free!
ANSWER!!!!!!!you buckle your seatbelt. if that doesnt work then i dont really know. ANONYMOUS YOU CANT TURN IT OFF!^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^Wrong !!2006 (and most likely every other year & model) can be programmed OFF at any dealership.YOU CAN TURN IT OFF!