STPS (Seat Track Position Sensor) (Only USA)
WARNING: This page is about a different car, the 2005 Hyundai Santa Fe. However, it is still accessible from the selected car via links, so may be relevant.
The STPS operated via a non-contacting magnetic proximity sensing device combined with a simple electronic circuit resulting in the ability of producing two separate & distinct logic level signals.
The STPS output signal is altered by the proximity of a separate ferro-magnetic shunt, which is linked via the seat track. The logic signal produced is the result of the proximity device being activated (no shunt present) or deactivated (shunt present).