volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

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Actuating exhaust gas recirculation valve N18 > < Performing final control diagnosis

Polo Mk3

Actuating commencement of injection valveN108
Actuating commencement of injection valve -N108-
–  Confirm entry with Q key.
   
Indicated on display:
Actuating the valve results in a significantly audible change in combustion noise (knocking).
If no change in combustion noise is heard:
–  Check injection timing device control range → Chapter.
  
Final control diagnosis               ->
Commencement of injection valve N108

Actuating exhaust gas recirculation valve N18 > < Performing final control diagnosis