Torque Converter Turbine Speed Sensor
The torque converter turbine speed sensor (output shaft rotation sensor) is mounted to the transmission case (from the outside of the case).
The sensor reads the rotation speed of the periphery of the high clutch drum coupled to the input shaft, and sends sine wave signals (32 pulses per rotation) to the TCM. The TCM calculates the proportion of the input shaft speed to the vehicle speed and determines whether the shifting is to be made or not.