2002 focus sedan. Airbag light on, seatbelt light on, won’t go off. Changed the seatbelt plug into thingy, but still no go, lights still on. Checked old fastener, open circuit no seatbelt inserted, inserted seatbelt, still open circuit. Normal? Don’t think so. Also no codes on my scanner, like open seatbelt switch, etc. there is a sensor under seat on the metal rail the seat slides on that also has 2 wires on it, like the fastener, looks like some kind of seat positioned sensor, possibly metal prox sensor? metal bar will slide into notch for position indication ? Dont think this has weight sensor. Read some readings on this, the front impact sensor is next, hasn’t been touched. Will a better code reader tell me anything more? Any help appreciate.