Location of parts in the engine compartment
1 Output stage #7 with ignition coil
2 Coolant temperature sensor (in the coolant pipe on the rear side of the cylinder head)
3 Valve with Hall sensor
4 Throttle control unit
5 Plug connections for lambda probe, engine speed sensor, knock sensor
6 Motronic control unit
7 Solenoid valve for activated carbon container
8 Air mass meter
9 Lambda probe with heated lambda probe
10 Injectors
11 Knock sensor
12 Engine speed sensor (behind the oil filter)
Cleanliness when working on the injection system
When working on the engine, in which the connections of the fuel injection system must be disconnected. the following precautions should be observed:
- Before loosening the union nuts, thoroughly clean them and the surrounding parts.
- Lay out the removed parts on a clean surface and cover them well with paper or plastic film, do not use rags for this. Do not touch the connections on the parts with greasy hands to prevent foreign objects from entering the system.
- Removed parts that will not be used immediately should be stored in a box or other closed box.
- Remove new parts from packaging immediately before installation.
- If system connections are open, do not use compressed air to blow other parts. The vehicle must not be moved as far as possible. Open connections are always good to close.
Safety precautions when working with the system
Since installed injection systems are electronically controlled and work in conjunction with the ignition system, the following precautions must be observed when working on the system to prevent damage and/or system defects.
When connecting and disconnecting the electrical wires of the ignition system, injection system or measuring devices, always turn off the ignition.
When cranking the engine with the starter so that the engine does not start (e.g. when measuring compression), you need to disconnect the plug from the output stage of the ignition coils and the plugs from the injectors.
When starting from an external source, do not apply a voltage of more than 16.5V and do not crank the engine for more than 1 minute.
When cleaning the engine with cleaning fluids, switch off the ignition.
When carrying out any work on the vehicle, always disconnect both wires from the battery (AB).
When towing a vehicle with damage to the ignition or fuel injection systems, the plug must be disconnected from the output stage.
Visitor comments