Transmission Speed Sensor: Description and Operation
DESCRIPTIONThe Transmission Speed Sensor produces an AC voltage that is proportional to the speed of the transaxle's Forward Drum. Since this Drum is mechanically linked to the torque converter turbine, the Sensor is actually measuring turbine speed.
The frequency of this signal is used to calculate transmission speed which is combined with other sensors inputs to determine proper shift scheduling, capacity and Torque Converter Clutch.