Throttle Actuator Control (TAC) System Description: Purpose
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
The throttle actuator control (TAC) system delivers improved throttle response and greater reliability and eliminates the need for mechanical cable. The TAC system performs the following functions:
- Accelerator pedal position (APP) sensing
- Throttle positioning to meet driver and engine demands
- Throttle position sensing
- Internal diagnostics
- Cruise control functions
- Manage TAC electrical power consumption
The TAC system includes the following components:
- The APP sensors
- The throttle body assembly
- The powertrain control module (PCM)