Throttle Position (TP) Sensor

The Throttle Position (TP) sensor is a potentiometer. It is connected to the throttle valve shaft. As the throttle position changes, the TP Sensor varies the voltage signal to the ECM. See Fig 1 .

Fig 1: Cutaway View Of Throttle Position Sensor & Voltage Output Chart

Courtesy of AMERICAN HONDA MOTOR CO., INC.