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Engine control unit J623 (Golf) > < Renewing Teflon seal on injector

Golf Mk5

Cleaning throttle valve moduleJ338
Cleaning throttle valve module -J338-
Special tools and workshop equipment required
t  Acetone
  Note
t  Always follow safety precautions → Chapter.
t  Observe rules for cleanliness → Chapter.
t  If a new engine control unit is installed, the throttle valve module must be adapted. Adaption must only be performed with a new or cleaned throttle valve module, because soiling/coking in closed throttle valve can lead to incorrect adaption values.
t  When cleaning the throttle valve housing it must not be scratched.
Procedure:
–  Loosen air filter housing and pull the intake hose off the throttle valve housing.
–  Remove throttle valve module.
   
–  Open throttle valve by hand and block throttle valve in open position with a suitable object -arrow-.
  WARNING
Acetone is highly inflammable. Please observe the accident prevention regulations and safety instructions when handling highly inflammable fluids. Do not use compressed air when cleaning the throttle valve. Wear eye protection and protective clothing to avoid possible injury and skin contact.
  N24-10125
–  Thoroughly clean throttle valve housing, especially around closed throttle valve, using commercially available acetone and a cleaning brush.
–  Wipe off throttle valve housing using a lint-free cloth.
–  Wait until the acetone is fully evaporated and reinstall the cleaned throttle valve module.
–  Adapt the engine control unit to throttle valve module → Vehicle diagnosis, testing and information system VAS 5051“Guided functions”.
  N24-10124

Engine control unit J623 (Golf) > < Renewing Teflon seal on injector