The fuel system is under pressure! Place a cloth around the connecting point before releasing hose connections or when opening the system. Then reduce the pressure by carefully removing the hose or cap.
Observe the following points to prevent injury to persons and/or damage to the injection system:
t
Do not touch or remove ignition coils with the engine running or at start speed.
t
Disconnect and connect wires of the injection system and measuring device wires when the ignition is switched off.
t
Do not carry out engine wash unless the ignition is switched off.
t
Switch off the ignition before disconnecting and connecting the battery, as this may damage the 4AV control unit.
t
If the engine must be operated at start speed without the engine starting:
–
Disconnect all 4-pin plug connections from ignition coils with power output stage -N70-, - N127 -, -N291- → Chapter.
–
Disconnect all plug connections for the injectors.
If test and measuring devices are required during test drives observe the following:
t
Always secure the test and measuring devices on the rear seat and have a second person operate them there. If the test and measuring equipment is operated from the front passenger seat, this can result in injuries to the persons sitting on that seat in the event of an accident which involves the front passenger airbag being deployed.
Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.
Help keep workshop manuals free
workshop-manuals.com provides free online workshop manuals.
If they helped you fix your car, please consider sharing or
making a small donation to keep the servers running.
Caution