volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Test data, spark plugs > < Assembly overview - parts of ignition system
Safety precautions
Safety precautions
To prevent injuries to persons and/or damage to the injection and ignition system, the following must be observed:
t  Do not touch or pull off ignition wiring when engine is running or turning at starter speed.
t  Switch off ignition before connecting or disconnecting injection and ignition system wiring as well as test instrument cables.
Observe following if test and measuring instruments are required during a road test:
t  Test and measuring instruments must be secured to rear seat and operated by a second person from this location.
If test and measuring instruments are operated from front passenger 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.
t  If the engine is to be turned at starter speed without starting:
Engine codes AUA, AUB
   
–  Pull 4-pin connector off ignition transformer -arrow-.
Engine codes BBY, BBZ, BKY
  N28-0175
–  Pull all 4-pin connectors -arrows- off ignition coils.
Continuation for all vehicles
  N28-0263
–  Remove fuse No. 25 from fuse holder.
  Note
Removing fuse 25 interrupts the voltage supply to the injectors.
  N24-1481

Test data, spark plugs > < Assembly overview - parts of ignition system