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Home >> Pontiac >> 2004 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 274 (Engine Controls (Introduction) - 3.8L) >> Description and Operation >> Throttle Actuator Control (TAC) System Description >> Throttle Actuator Control Module

Throttle Actuator Control Module

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

The TAC module is the control center for the TAC system. The TAC system uses Electronically Erasable Programmable Read Only Memory and is self-diagnosing. The TAC module provides diagnostic information to the PCM through a dedicated serial data line. The TAC achieves throttle positioning by providing a pulse width modulated voltage to the TAC motor as directed by the PCM. The TAC module is not serviced and just be replaced with the throttle body assembly.

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