Monitor Description

The throttle motor is operated by the engine control module (ECM) and it opens and closes the throttle valve. The opening angle of the throttle valve is detected by the throttle position sensor. It provides feedback to the ECM to control the throttle motor and the throttle valve opening angle properly in response to driver inputs.

The ECM concludes that there is a malfunction of the electrical throttle control system (ETCS) when the throttle valve remains at a fixed angle although high drive current is supplied from the ECM. The ECM will turn on the malfunction indicator lamp (MIL) and a DTC is set.