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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1290 (Automatic Transmission - 4R70E/W, 4R75E/W) >> Description And Operation >> Transmission Electronic Control System >> Turbine Shaft Speed (TSS) Sensor

Turbine Shaft Speed (TSS) Sensor

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

The turbine shaft speed (TSS) sensor is a magnetic pickup that sends a signal to the PCM to indicate transmission turbine shaft speed. The TSS is mounted externally on the case. The PCM uses the TSS signal to help determine appropriate operating pressure and TCC operation.