Steering System - Electronic Power: Description
The electronic controlled motor drive power steering systems senses both vehicle speed and frequency of steering operation. This system activates the 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.
This system is a vehicle speed sensing type that reduces assist force as vehicle speed increases. 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 speeds below 6 MPH (10 KPH).
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 a self-diagnosis and a fail safe function.