Throttle Actuator Control (TAC) System Description: Purpose

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 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 accelerator pedal position (APP) sensors
• The throttle body assembly
• The engine control module (ECM)