Turbine Shaft Speed (TSS) Sensor

WARNING: This page is about a different car, the 2009 Mercury Milan and 2009 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 on the transaxle housing over the input shaft.

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

The signal is used for the following functions:

to control the shift operations.
to control the TCC.
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.