Fuel Injection System

Safety Precautions


Fuel system is under pressure!

• Wear protective goggles and protective clothing in order to avoid injury and contact with the skin.

• Before loosening line connections, place cloths around the connection point. Then release pressure by carefully pulling off the line.

To reduce the risk of personal injury and/or damage to the fuel injection and ignition system, always observe the following:

• Do not touch or remove the ignition coil or the ignition wires when engine is running or turning at starter speed.

• Only disconnect and reconnect wires for injection and ignition system, including test leads, if ignition is turned off.

If engine is to be cranked at starting RPM without starting:

- Disconnect the connector - arrow - from the ignition coil.






For safety reasons, switch off the current to the fuel pump before opening the fuel system. Otherwise, the fuel pump will activate when the driver door opens or when the ignition switches on. Possibilities to interrupt the current supply:

• Battery, Disconnecting

or

• Remove the fuel pump (G6) fuse.

or

• Disconnect the connector - arrow - from the fuel delivery unit flange.







When doing any repair work, especially in the engine compartment, pay attention to the following due to clearance issues:

• Route all lines and wires in their original locations.

• Ensure sufficient clearance to all moving or hot components.

If special testing equipment is required during road test, note the following:

• Testing and measuring equipment must always be secured to the rear seat and be operated from there by a second person.

If the vehicle is involved in a collision while testing and measuring equipment is operated from the front passenger seat, the person sitting in that seat could be seriously injured when the airbag deploys.

- Erase the engine control module DTC memory since malfunctions were stored when fuse was removed. Refer to => [ Engine Control Module DTC Memory, Checking and Erasing ] Engine Control Module DTC Memory, Checking and Erasing.