toy 92 previa air bag light on.

[krazeht]

recently engine check light intermitten come on i let a mechanic check it, he say it throttle body sensor problem after a day work on it,
engine check light still on and create another problem that is airbag light is on also engine can not idle.
he want to keep working on it but i refuse and take the van back home.
I think this mechanic did somehting wrong on my van.
give me an idea should i take this van to toy dealer.