A Method and System for Determining a Closed Position of a Throttle Plate in an Internal Combustion Engine.

A system 12 and method for determining the closed position of a throttle plate 52 of an internal combustion engine 10 are provided. The system 12 includes a throttle sensor 56, a temperature sensor 70, and an electronic control unit 72 The electronic control unit 72 is configured to select one of a first closed position value indicated by throttle sensor 56 signal and a second closed position value retrieved from a memory 90, 92 or 94 responsive to the measured temperature. The system 12 minimizes inaccuracies in throttle plate position detection by eliminating errors resulting from a change in geometry between the throttle plate 52 and the throttle body 50 of the engine during running at relatively high temperatures.