Throttle Body

Throttle Body:

The throttle body consists of the main bore, the air bypass passage, the vacuum passage, and the following parts:
^ A throttle valve (1) which is interlocked with the accelerator cable and controls the amount of intake air.
^ An Intake Air Control (IAC) valve (2) which supplies the bypass air when the engine is cold.
^ A Throttle Position (TP) (3) sensor which detects the throttle valve opening and sends a signal to the PCM.