Q&A

 Master

Intermittent ignition coil failure can bring on a Check Engine light for sure and I have replaced a few coils on Camrys but the usual Check Engine light related problems are usually Oxygen sensor heater circuit of sensor performance problems, evaporative emission problems or air flow meter related issues so checking the source of the Check Engine light problem is important to figure out. I haven't sen much ignition switch electrical portion failure (Honda had a lot of problems). The windows are on a different circuit. Get someone to sit in the drivers seat and watch the lights on the dash while you wiggle electrical harnesses with the engine running see if any fuse blows or lights go out, windows start to operate ect....
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