A place for more technical discussions. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.
If the airbags and seatbelt pretensioners have gone off, check the chassis alignment/condition and number. Jimnys have crumple zones in the forward chassis legs. These are replaceable sections, but they have to be put in right.
It takes a hell of a bang head on to set the air bags off.
If it suddenly breaks, go back to the last thing that you did before it broke and start looking there