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Home >> Ford >> 2009 >> Focus L4-2.0L >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Description and Operation >> 4F27E >> Transaxle Electronic Control System >> Output Shaft Speed (OSS) Sensor
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Output Shaft Speed (OSS) Sensor




Transaxle Electronic Control System

Output Shaft Speed (OSS) Sensor





The OSS sensor is located in the transaxle housing above the rotor in the differential.

The OSS sensor is an inductive sensor which detects the vehicle speed by means of a rotor on the differential.

The signal is used for the following functions among other things:

- to determine the shift timing.
- to supply the vehicle speed input signal for the PCM.

If the OSS sensor fails, the signal of the TSS sensor is used as a substitute signal.
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