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High-pressure pump - exploded view > < Regulating flap control unitJ808 and throttle control unitJ338: Removing and installing.

Leon Mk2

Cleaning throttle valve moduleJ338
Cleaning throttle valve module -J338-
  Note
t  If a new engine control unit -J623- has been fitted, the throttle control unit must be adapted. Adaptation must be performed only with a new or cleaned throttle valve module, because soiling or coking at the end stop of the throttle valve can lead to incorrect adaptation values.
t  Take care not to scratch the groove of the throttle valve when cleaning it.
–  Remove throttle valve module -J338- → Chapter.
   
–  Open the throttle by hand and lock with an appropriate tool, such as a plastic or wooden wedge -arrow-.
  WARNING
Acetone is highly inflammable. Please observe the accidental regulations and safety notes when handling with highly inflammable fluids. Do not use compressed air when cleaning the throttle valve. Wear safety goggles and protective clothing to avoid possible injury and skin contact.
  N24-10125
–  Clean the groove of the throttle valve, above all in the area -arrows- of the closed throttle, working meticulously with a brush and normal acetone in accordance with DIN 53247.
–  Clean the groove of the throttle valve with a lint free cloth.
–  Allow acetone to evaporate completely and re-install throttle valve module after cleaning.
–  Delete the learnt values and adapt engine control unit -J623- to throttle valve module → Vehicle diagnostic tester„Guided functions“.
  N24-10124

High-pressure pump - exploded view > < Regulating flap control unitJ808 and throttle control unitJ338: Removing and installing.