Circuit/System Description
WARNING: This page is about a different variant/trim than selected.
The Throttle Actuator Control (TAC) System voltage supplies power to the TAC processor independent of the engine control module (ECM) processor. The ECM compares the reported voltage from the TAC processor to the ignition voltage supplied to the ECM processor. If the voltages are not within a specified range of each other the ECM will set this DTC.