- Running gear
- Body
- Engine, mechanics
- Vehicle electrics
- Power transmission
- Heating, ventilation, air conditioning
- Power unit
- Simos injection and ignition system
- Motronic injection and ignition system
- 4-Cyl. injection engine (2 valve, roller rocker finger), Mechanics
- Mono Motronic injection and ignition system
- Diesel injection and glow plug system
- 4-cyl. diesel engine, Mechanics
- 1AV fuel injection and ignition system (2-valve)
- 1AV fuel injection and ignition system (4-valve)
- 4CV fuel injection and ignition system
- 4AV injection and ignition system
- Motronic inj. and ignition system (2-valve, roller rocker finger)
- 4LV injection and ignition system
- Self diagnosis, V.A.G Inspection Service
- Mixture preparation system, electronic inj.,Gas
- Servicing injection system
- Checking components
- Checking Lambda probe heating before catalyst
- Checking Lambda probe heating for Lambda probe after catalyst
- Checking throttle valve control part
- Checking intake manifold pressure sender
- Checking intake air temperature sender
- Checking coolant temperature sender
- Checking engine speed sender
- Checking injectors
- Checking fuel pressure regulator and holding pressure
- Checking intake air system for leaks (unmetered air)
- Checking intake air preheating
- Checking functions
- Engine control unit
- Checking additional signals
- Ignition system, glow plug system
- 4-Cyl. injection engine (4 valve), Mechanics
- 4-Cyl. injection engine (4-valve, roller rocker arm), Mechanics
- 4-Cyl. injection engine (4 valve, roller rocker finger), Mechanics
- 4-cyl. injection engine (4-valve, roller rocker finger), Mechanics
- 3-cylinder diesel engine
- Direct injection and glow plug system with distributor pump as of 10.99
- Diesel direct injection and glow plug system up to 09.99
- 4-cylinder injection engine (2-valve), mechanics
- Heating, ventilation, air conditioning system