Circuit Description

Commanded throttle position (based on accelerator pedal position and possibly other limiting factors) is compared to actual throttle position. Both values should be within calibrated range. Commanded and actual throttle position are monitored redundantly by both PCM and TAC modules.

Conditions for setting DTC are: TAC module detects that commanded and actual throttle positions are not within a calibrated range of each other or PCM and TAC cannot determine throttle position or both sensors are invalid and these conditions are present for less than one second.