Circuit Description

Electric Throttle Control Actuator consists of throttle control motor and Throttle Position (TP) sensor. The TP sensor responds to throttle valve movement. The TP sensor has 2 sensors. These sensors are potentiometers which transform throttle valve position into output voltage, and emit the voltage signal to the ECM. See Figure . In addition, these sensors detect opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make throttle valve opening angle correct in response to driving conditions.