The easiest way to narrow down where you need to look is to hook up an OBD2 reader. However, if the light stays on, you have an underlying problem that you need to address. At this point, your vehicle is completing a system check, and when everything checks out, the light should turn off.
The only other time you should see the electronic throttle control light is when you turn on your vehicle. When it’s not, the light turns on to let you know that there is a problem. Your electronic throttle control light monitors the throttle control system to ensure that everything works the way it should. Electronic Throttle Control Light Function While there are plenty of advantages to this, if everything isn’t working the way it should, then you’re not going to accelerate the way you should. While older vehicles use a cable that’s linked directly to the throttle body, most modern cars accomplish this feat through sensors and your vehicle’s ECM. The electronic throttle control system controls and monitors the position of the throttle. The throttle system includes the throttle body, accelerator pedal, and wirings. The electronic throttle control (ETC) light indicates that there is an issue with the throttle system. References What Does The Electronic Throttle Control Light (ETC) Mean?
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