Turbine Shaft Speed Sensor (TSS)

Super Duty Turbine and Output Shaft Speed Sensor Locations

The turbine shaft speed (TSS) sensor is a magnetic pickup that sends the powertrain control module (PCM) information on the rotation speed of the coast clutch drum. The turbine shaft speed (TSS) sensor is mounted externally on the top of the transmission case. The powertrain control module (PCM) uses turbine shaft speed (TSS) sensor signals to help determine electronic pressure control (EPC) pressure, shift scheduling the torque converter clutch (TCC) operation.