Torque Converter Turbine Speed Sensor

The torque converter turbine speed sensor (output shaft speed sensor) is externally mounted on the transmission case.

The sensor detects the torque converter turbine speed in terms of 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 converts this signal into turbine speed to use it for shifting control.

Fig 1: Identifying Torque Converter Turbine Speed Sensor

Courtesy of SUBARU OF AMERICA, INC.