How Cars Work For Dummies 1999 Dodge Caravan Electronic Throttle Control. The throttle is a fly by wire type, no more throttle cables, when you press the gas the computer reads that via a throttle pedal sensor and then commands a motor on the engine throttle valve to open the throttle to the desired power setting which it reads through yet another position sensor at the throttle valve on the engine. You could try to reset it yourself.
It's a complicated system of electronic signals that allows your pedal presses to be interpreted as a specific amount of power to be applied through the car and transmitted as torque, but it's a lot less complicated than the system used in cars of years gone by. So often times this technology is called Drive by the Wire. Practically all modern vehicles have integrated electronic throttle control into the engine control modules (ECM), simplifying installation, programming, and diagnosis.
Electronic throttle control actually really simplified things.
Turn the key to the run position (vehicle not running).
At the same time, the ECU increases injector pulse width to boost fuel flow accordingly. When electronic throttle control first appeared, it was accompanied by its own ETC module. Disconnect the ETC connector and then plug back in.