Throttle Valve Switch (TVS)

The throttle valve switch is attached to the throttle chamber and actuates in response to the accelerator pedal movement. This sensor is a kind of potentiometer, which transforms the throttle valve position into output voltage and inputs this voltage signal to the ECU. It contains idle contacts and full-throttle contacts. The idle contacts are used for engine control. When throttle is at idle, idle contacts are closed. At any other throttle position a varying voltage signal is sent to the ECU in accordance with throttle valve opening and closing position.