Etc (Electronic Throttle Control) System: Description

Fig 1: Electronic Throttle Control System Diagram

Courtesy of KIA MOTORS AMERICA, INC.

ETC system controls the opening angle of throttle valve to operate throttle valve control, idle speed control, traction control, auto cruise control and so on.

ECM receives accelerator position sensor signals (APS1, APS2) and calculates appropriate throttle opening angle which is used to control the throttle angle of throttle motor. Throttle position sensor integrated into throttle body assembly detects the throttle opening angle (TPS1, TPS2) and sends it to ECM for feedback control.

Fig 2: Locating ETC Module

Courtesy of KIA MOTORS AMERICA, INC.