Throttle Body: Description and Operation

THROTTLE BODY ASSEMBLY

The throttle body assembly consists of the throttle body, the throttle position (TP) sensors, and the throttle actuator motor. The throttle body functions similar to a conventional throttle body with the following exceptions:
- An electronic motor opens and closes the throttle valve.
- There are 2 individual TP sensors within the throttle body assembly.

Two separate signal circuits are used to connect the TP sensors and the ECM. The TP sensor 1 signal voltage increases as the throttle opens. The TP sensor 2 signal voltage decreases as the throttle opens.