Electronic Power Assist Steering (EPAS) System: Overview
WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The EPAS system provides steering assist to the driver by replacing the conventional, hydraulic valve system with a steering gear equipped with an integrated electrical motor and PSCM . The motor operation and level of steering assist provided is controlled by the PSCM .