LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Saturn >> 2002 >> L100 >> Repair and Diagnosis >> External Pages >> Different car >> Section 85 (Engine Controls - Theory & Operation) >> Computerized Engine Controls >> Input Devices >> Throttle Actuator Control
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Throttle Actuator Control

WARNING: This page is about a different car, the 2003 Saturn LW300 and 2003 Saturn L300. However, it is still accessible from the selected car via links, so may be relevant.

The Throttle Actuator Control (TAC) controls air flow to the engine. Engine does not use a throttle cable to control engine speed. The throttle body contains a direct current stepper motor that is controlled by the ECM. The ECM is able to control the stepper motor by moving throttle plate in either direction to increase or decrease air flow to engine. A problem in TAC sensor circuit may set a related DTC. See DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS - 3.0L SATURN "L" SERIES article.

scientia non olet · About LEMON Manuals