Circuit Description

Electric throttle control actuator consists of throttle control motor and throttle position sensor. The throttle position sensor responds to throttle valve movement. The throttle position sensor has 2 sensors. These sensors are potentiometers which change throttle valve position into output voltage, and emit voltage signals to the ECM. In addition, these sensors detect opening and closing speed of throttle valve and feed voltage signals to the ECM. The ECM judges current opening angle of throttle valve from these signals and controls the throttle control motor to make throttle valve opening angle correct in response to driving conditions.