Training course on diagnostics and repair of electric power steering units
What you will learn
- Understand how EPS and EHPS systems work.
- Apply essential electrical and electronics skills to diagnostics.
- Connect and test steering units using the MS561 PRO.
- Identify faults and interpret diagnostic results.
- Perform basic repairs and verify results through retesting.
- Follow documented programming procedures and prepare technical support requests.
Learn to diagnose and carry out basic repairs on electric power steering (EPS) and electro-hydraulic power steering (EHPS) units using the MSG MS561 PRO test bench. This online course is designed for automotive diagnostic technicians, repair specialists and automotive electricians working with EPS steering racks and columns, and EHPS pumps.
How the training works
The main EPS/EHPS course takes approximately 12–15 hours, plus the time needed for the included electrical fundamentals course. Study at your own pace on academy.msg.equipment. You can complete the theory modules before purchasing the test bench.
- Text-based lessons with photos, diagrams, and software screenshots; automated quizzes after the lessons.
- Lessons come with PDF quick-reference sheets (reference readings of a known-good unit, support request checklist).
Electrical fundamentals course included
Your training includes the prerequisite course “Fundamentals of Electrical Engineering and Electronics for Automotive Electricians”: 8 modules and 26 lessons covering electrical circuits, components, measurements, oscilloscopes, soldering and CAN, LIN and FlexRay basics. Complete this foundation course before starting the main EPS/EHPS course, which builds on these skills.
Equipment for practical work
To practise the procedures, you need access to an MS561 PRO test bench and the cables specified for the selected unit. FlexRay units require the MS-39000 CAN-to-FlexRay adapter.
Training program
Part I — Theory · Modules 1–5 · approximately 5 hours
Target audience, requirements, equipment, scope and limitations
System types, configurations (C-EPS, P-EPS, DP-EPS, R-EPS), unit classification
ECU, electric motor, torque and steering angle sensors, assist logic, failure modes
BLDC motors, commutation and field-oriented control (FOC), sensor types, CAN specifics and failsafe mode — with real photos of circuit boards and sensors
Program selection; diagnostic, test, and special functions; saving results
Part II — Practice · Modules 6–10 · approximately 7–8 hours
Power lines, universal cable, MS-39000 CAN→FlexRay adapter, connection best practices
Identification → inspection → power → communication → codes → test → decision; known-good unit baseline; real-world case reviews
Connectors, soldering, subassembly replacement, retest, fault type reference guide, vehicle installation and adaptation (by manufacturer), programming as a repair tool
Board sections, common failures (including CAN/FlexRay transceivers), power tracing, the “repair or escalate” decision
When and how to escalate; the MSG ticket system and forum as a knowledge base
Practice is already built on real units: the course includes end-to-end reviews of actual cases — from acceptance testing of a known-good rack to locating a faulty sensor and a documented repair by programming.
Communication interfaces and control signals
- CAN and CAN-FD — the primary protocol for most units: CAN-High/CAN-Low connection, termination resistors, reading RAW CAN Data, “no communication” diagnostics.
- FlexRay — premium-segment units (BMW, Audi, Mercedes-Benz, Land Rover): working through the MS-39000 adapter, reading the Connected indicator.
- PWM — PWM-controlled units (the protocol is listed on the program card).
- LIN — basics are covered in the basic electronics course (CAN, LIN, FlexRay: operating principle, data rates, wiring).
Final assessment and certificate
Complete a combined theory and practice test with a passing score of 80%, plus an instructor-graded assignment on preparing a technical support request. A certificate is awarded after successful completion.
Further course development
Additional case-study modules for specific steering rack, column and electro-hydraulic pump models are planned. These will expand the course with complete diagnostic and basic repair workflows for individual units.
Explore the learning format before you start: use the “Try the demo course” button on this page.