Turbine Shaft Speed (TSS) Sensor

WARNING: This page is about a different car, the 2006 Mercury Milan and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The turbine shaft speed (TSS) sensor is located in the transmission housing over the transmission input shaft.

The TSS sensor is an inductive sensor which senses the speed of rotation of the transmission input shaft.

The signal is used for the following functions:

To control the shift operations.
To control the torque converter clutch.
To check the torque converter slip.

If the TSS sensor fails, the signal of the output shaft speed (OSS) sensor is used as a substitute signal.