Throttle Position Sensor: Description and Operation

Throttle Potentiometer:

PURPOSE
Provides a reference voltage interpreted by the ECU to determine throttle position. Potentiometer input enables the ECU to differentiate between idle, acceleration and full power demands and make adjustments accordingly.

OPERATION
As the throttle opens, the ECU detects a linear increase in voltage and responds by enriching the mixture to accommodate acceleration.

LOCATION
Mechanically coupled to throttle shaft.