Advanced Steering and Suspension Diagnostics

1212 Abbott Road,Buffalo NY 14218

07 March, 2023

Description

This workshop enhances the skills of the professional undercar technician in the area of steering systems on both hydraulic and electronic assist units. Steering systems have evolved from hydraulic pump assisted steering gears to modern EPS (electric power steering) designs that can provide various level of assist. Each system’s component operation is discussed and the strategies of operation are outlined. Information on steering angle sensor recalibration and sensor testing on both hydraulic and electrical assist steering units are reviewed. We also discuss electronic and mechanical suspension ranging from variable valve ride control systems to modern magnetorheological damper systems. Operation and diagnostic tips for air, nitrogen and hydraulic suspension systems are included in this workshop. Numerous diagnostic strategies are reviewed related to owner concerns of accelerated tire wear and inadequate steering, stopping and stability that may be caused by a suspension component failure. After completing this workshop, the student will have the knowledge to: Define the operation of various electronically assisted steering systems (column drive, rack motor drive, belt drive) Overview variable ratio system operation from various manufacturers Diagnose hydraulic steering assist concerns and causes of noise and intermittent assist Utilize scan tools and other methods to service the system and recalibrate sensors after repairs and wheel alignment Identify the components and operation of late model ride control systems and related service procedures Utilize scan tools for diagnosis and bi-directional testing on both electronic steering and suspension controls