<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (July 2013) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (July 2013) (Learn how and when to remove this template message) </Td> </Tr> <P> A throttle position sensor (TPS) is a sensor used to monitor the throttle position of a vehicle . The sensor is usually located on the butterfly spindle / shaft so that it can directly monitor the position of the throttle . More advanced forms of the sensor are also used, for example an extra closed throttle position sensor (CTPS) may be employed to indicate that the throttle is completely closed . Some engine control units (ECUs) also control the throttle position electronic throttle control (ETC) or "drive by wire" systems and if that is done the position sensor is used in a feedback loop to enable that control . </P> <P> Related to the TPS are accelerator pedal sensors, which often include a wide open throttle (WOT) sensor . The accelerator pedal sensors are used in electronic throttle control (ETC) or "drive by wire" systems, and the most common use of a wide open throttle sensor is for the kick - down function on automatic transmissions . </P>

What is a throttle sensor on a car
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