Audi Engine Management Systems – SSP 941003

Engine Management Systems - SSP 941003 PDF


The origins of Audi engine development can be traced back to a 1913 4-cylinder liquid-cooled engine designed by August Horch (1868-1951) in Zwickau, Germany. This greatgrandfather of the modern Audi engine shared the same operating principles as the most modern 5-valve per cylinder water-cooled automotive engine.

Both engines are four-stroke reciprocating internal combustion engines, and although a direct comparison cannot be made, the basic operating principles remain the same.

Technology moved the four-stroke engine from magnetos and carburetors to ignition coils, points, distributors, mechanical fuel injection, hydraulic fuel injection, electronic ignition, electronic fuel injection, and finally to the combined fuel and ignition control of modern Motronic engine management systems.

Motronic engine management systems use electronics to precisely monitor and control every aspect of engine operation, thereby improving efficiency, power, and driveability, while at the same time reducing fuel consumption and tailpipe emissions.

The Self-Study Program is not a Repair Manual!
The values given are only intended as a guideline. Refer to the software version valid at the time of publication of the Self-Study Program.


  • Introduction
  • Course goals
  • Principles of engine operation
  • Basic four-stroke principle
  • Gasoline properties
  • Air/fuel mixture formation
  • Fuel system, overview
  • Evolution of Engine Management Systems
  • Ignition system, overview
  • Emissions system, overview
  • Three-way Catalytic Converter, overview
  • On Board Diagnostics
  • Review
  • Continuous Injection System
  • CIS
  • K-Jetronic with Lambda control
  • CIS-E
  • CIS Turbo
  • CIS-E Motronic
  • Motronic M2.3.2 Overview
  • System description
  • Inputs/Outputs – 20 Valve Turbo Motronic M2.3.2
  • Inputs/Outputs – 4.2 Liter V8 Motronic M2.3.2
  • On Board Diagnostics
  • Motronic M2.3.2 Component Summary
  • Input sensors
  • Actuators (outputs)
  • Review
  • MPI – Multi Port Fuel Injection system
  • System description
  • M MS 100/200 overview
  • On Board Diagnostic (OBD)
  • MMS 100/200 System Components
  • MMS 300/311 overview, system description and comparison
  • OBD-II Overview
  • Background
  • OBD-II
  • Diagnostic Trouble Codes
  • Readiness Codes
  • Summary
  • MMS 400/410/411 Overview
  • Oxygen Sensor(s) (02S) behind Three Way Catalyst (TWC) G130/G131
  • Sensor for EVAP canister G172
  • Data Link Connector (DLC)
  • Secondary Air Injection (AIR)
  • Leak Detection Pump (LDP) V144
  • Motronic M5.4.2 Overview
  • System Description
  • Input/Outputs – Motronic M 5.4.2
  • Additional Systems
  • A8 Motronic M5.4.2 system overview
  • Motronic M5.4.2 Components
  • Input Sensors
  • Actuators (outputs)
  • Motronic M5.9.2 Overview
  • System Description
  • I nput/O utputs – Motronic M 5.9.2
  • Additional Systems
  • 1.8 liter turbo, system overview
  • Motronic M5.9.2 Component Differences
  • Engine Control Module J220
  • Combined Sensors/Actuators
  • Input Sensors
  • Actuators (outputs)
  • Review
  • Motronic ME 7Pathways
  • Components of Motronic ME 7
  • Electronic throttle control
  • Review
  • Level one course preparation
  • Critical Thinking Skills
  • Audi Electronic Service Information Service (AESIS) navigation
  • Audi HELP line/Tech-tip line
  • Diagnostic and Special Tools
  • Review questions
  • Suggested reading and reference
  • Glossary
  • Post-test

Language: English
Format: PDF
Pages: 185
Size: 14.6 Mb
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