Throttle Body
The throttle plate position is controlled by a signal from the powertrain control module (PCM) which receives an input from the accelerator pedal position (APP) sensor. The system is fully electronic and does not use any cables. The signal from the PCM is used to control a DC motor within the throttle body which is connected to the throttle plate through gears. The throttle body also gives inputs back to the PCM. This information allows the PCM to compensate for factors such as carbon build up within the throttle body and throttle body wear. The throttle body also provides information to the PCM to enable the flagging of a diagnostic trouble code (DTC).
