Electronic Throttle Actuator: Description and Operation

ETC (ELECTRONIC THROTTLE CONTROL) SYSTEM








FUNCTION AND OPERATION PRINCIPLE
The Electronic Throttle Control (ETC) System consists of a throttle body with an integrated control motor and throttle position sensor (TPS). Instead of the traditional throttle cable, an Accelerator Position Sensor (APS) is used to receive driver input. The ECM uses the APS signal to calculate the target throttle angle; the position of the throttle is then adjusted via ECM control of the ETC motor. The TPS sign& is used to provide feedback regarding throttle position to the ECM. Using position precise control over throttle position is possible; the need for external cruise control modules/cables is eliminated.