Steering System - Electronic: Description

The electronic power steering system senses vehicle speed and frequency of steering operation. This system activates motor to supply required amount of fluid to vary assist force according to vehicle speed. Components in this system include: steering angle sensor, speed sensor, signal controller and power controller.

As vehicle speed increases, power steering system assist is reduced. It automatically selects one of four driving modes depending on average vehicle speed and frequency of steering operation. These modes include: high speed driving, suburban driving, winding road driving and city driving. Motor will not activate when not steering at vehicle speed is less than 6 MPH.

The electronic control logic configuration includes both an initial diagnostic function and a normal processing function to monitor input and output signals transmitted by various components. It includes self-diagnostic and fail safe functions.