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Throttle Position Sensor (TPS): Notes

The TPS is a variable resistor type that rotates with the throttle shaft to sense the throttle valve angle. As the throttle shaft rotates, the output voltage of the TPS changes. The ECU detects the throttle valve opening based on this voltage change.

Fig 1: Identifying Throttle Position Sensor (TPS) Location

Courtesy of KIA MOTORS AMERICA, INC.