Output Shaft (OSS) Sensor
WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
The output shaft speed (OSS) sensor functions as 2 sensors in one. The OSS sensor indicates output shaft speed by reading the differential spur gear. The OSS sensor also provides rotational direction for forward and reverse motion. The OSS sensor connects to the mechatronic assembly electronically.