Output Shaft Speed (OSS) Sensor

The OSS  sensor connects to the TCM  through wiring inside the lead frame module assembly.

The OSS  sensor is a Hall-effect type sensor that provides a signal to the TCM  that changes in frequency as the rotating speed of the output shaft ring gear varies.

The TCM  also compares the OSS  sensor signal with the TSS  sensor signal to determine the gear ratio provided by the rear planetary gearset.

The TCM  uses the OSS sensor signal as an input for its strategies for shifts and TCC  operation. The TCM  also uses the OSS  sensor signal for transmission fault detection and diagnostics.

Refer to Figure at the beginning of this procedure for the location of the OSS  sensor.