Throttle Position Sensor: Description and Operation

WITH M/T

Throttle Position Sensor (Manual Transmission):

WITH A/T

Throttle Position Sensor (Automatic Transmission):

The TPS is mounted on the throttle valve body and sends a varying voltage signal to the ECU based on throttle valve position. The ECU can then adjust fuel delivery based on acceleration, deceleration, full throttle (WOT) or idle. The TPS inputs the ECU through terminal PSW, (on models with Manual Transaxle), or terminal VTA, (on models with Automatic Transaxle).