Passenger weight sensor problem! car wont start!!

[asulkan]

Ive recently bought a Yaris and ive noticed every time i put something on my passenger seat the alarm comes on for the seatbelt to be buckeled up. I took matters into my own hands and cut the wire that is connected to the seat. The car subsequently will not start now even after ive reconnected the wires.
I have tried to reset the computer by disconnecting the battery, checked all the fuezes and nothing seems to work.

If anyone knows how to trouble shoot this I would be very greatfull. I live in the country and a tow bill will be an outragous amount haha

thanks

simon