Electronic Throttle Control Module: Description and Operation

THROTTLE ACTUATOR CONTROL MODULE

The throttle actuator control (TAC) module is the control center for the TAC system. The TAC system uses electronically erasable programmable read only memory (EEPROM) and is self-diagnosing. The TAC module provides diagnostic information to the powertrain control module (PCM) through a dedicated serial data line. The TAC achieves throttle positioning by providing a pulse width modulated (PWM) voltage to the TAC motor as directed by the PCM. The TAC module is not serviced and should be replaced with the throttle body assembly.