OBD1 Airbag Light
1994 Mercury Grand Marquis. Airbag light flashing at constant rate. Aware of counting flash pattern to get a code on these vehicles but it always flashes at a constant rate with no pauses.
3 mechanics tried to diagnose it to no avail. Learned that paper click jumping terminals is only for EEC module for check engine codes but the airbag diagnostic module is its own thing. Plugging in a OBD1 ford scanner shows check engine codes but it “cannot establish communication with airbag diagnostic module.”
So paper clip trick doesn’t work, no flash patterns to decipher code, OBD1 scanner can’t talk to airbag module. Already checked under seat connectors and they’re fine.
I’m completely lost as to what to do because I know nothing about airbags, I know it could be some sensors or the module itself or wiring or even clock spring but idk how to even go about diagnosing it. What would you recommend? Taking it to the dealership would be my last option because they’ll probably charge me an arm and a leg.
Thanks for the help in advance.