Throttle Actuator Control (TAC) Module

Throttle Actuator Control (TAC) Module:

The TAC module is the control center for the electronic throttle system. The TAC module and the PCM communicate via a dedicated redundant serial data circuit. The TAG module and the PCM monitor the commanded throttle position and compare the commanded position to the actual throttle position. This is accomplished by monitoring the APP and the TP sensor. These 2 values must be within a calibrated value of each other. The TAG module also monitors each individual circuit of the TP sensor and the APP to verity proper operation.