Specially designed grooves (or a notched reluctor wheel) are permanently attached to the transmission main (or input) shaft. It is normally positioned near the rear of the bell housing (at the transmission input shaft) The sensor is usually mounted with a bolt/stud or threaded directly into the transmission case. The input/turbine speed sensor is typically a 3-wire, electromagnetic sensor that is used to monitor transmission input speed (identified by the PCM as revolutions per minute or RPMs). Input and turbine speed sensors are virtually identical in design, and serve the same purpose, but manufacturers use variations in terminology to describe them. When I run across a trouble code P0717, it is because the powertrain control module (PCM) has detected no voltage output from the circuit of the input (or turbine) speed sensor that has been given the designation A. Although generic, the specific repair steps may vary depending on make/model. This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to all 1996-newer vehicles (Ford, Honda, Mazda, Mercedes, VW, etc.). Input/Turbine Speed Sensor A Circuit No Signal
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