Front Vehicle Speed Sensor
WARNING: This page is about a different car, the 2008 Subaru Tribeca, 2008 Subaru Outback, and 2008 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
This vehicle speed sensor is a Hall element type sensor and is mounted on the inside of the transmission case. It detects the drive pinion shaft speed and sends pulse signals (16 pulses per rotation) to the TCM.
Signals from the front and rear vehicle speed sensors are used to calculate controlling vehicle speed, which is in turn used for gear shift control.