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Test data, spark plugs > < Removing and installing parts of the ignition system

Leon Mk1

Motronic injection and ignition system (6-cylinder engine)
Servicing ignition system
Safety precautions
Warning!
When doing any repair work, especially in the engine well, due to the cramped conditions, pay attention to the following:
  • ◆ Route all sorts of pipes (e.g. for fuel, hydraulics, activated charcoal filter system, coolant, refrigerant, brake fluid and vacuum pipes and hoses) and electrical wiring so that the original positions are restored.

  • ◆ Ensure sufficient clearance to all moving or hot components.

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

  • ◆ 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 injection or ignition system wiring or tester cables.
  • ◆ If the engine is to be turned at starter speed, without starting:
 
N28-0226
  • ‒ → Pull all 4-pin connectors -arrows- off ignition coils.
 
N01-0485
  • ‒ → Pull fuse No. 14 out of fuse holder.

Note:

Removing fuse No. 14 interrupts the voltage supply to the injectors and fuel pump.

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.

Test data, spark plugs > < Removing and installing parts of the ignition system