Ignition System: Service Precautions

Safety precautions
To prevent injuries to persons and/or damage to the fuel injection and ignition system, the following must be noted:

WARNING: When performing repair work, especially due to the confined conditions in the engine well, pay attention to the following:

Route all types of lines (e.g. for fuel, hydraulics, activated charcoal canister system, coolant, refrigerant, brake fluid and vacuum) as well as electrical wiring so that the original positions are restored.

Ensure sufficient clearance to all moving or hot components.

Do not touch or disconnect ignition wiring when the engine is running or being turned at starter speed.
The ignition must be switched off before connecting or disconnecting fuel injection or ignition system wiring or tester cables.
- If the engine is to be turned at starter speed, without starting:







- Remove fuse 29 from fuse holder.

NOTE: Removing fuse 29 interrupts the voltage supply to the fuel injectors.

- Remove engine cover.







- Pull connectors off ignition coils 1...6.

NOTE: Mark connector and component before pulling connector off.

Observe following if test and measuring instruments are required during a test drive:
- Test and measuring instruments must be secured to rear seat and operated by a 2nd person from this location.

If test and measuring instruments are operated from front passenger's seat and the vehicle is involved in an accident, there is a possibility that the person sitting in this seat may receive serious injuries when the airbag is triggered.