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Lambda probe > < Removing and installing throttle valve moduleJ338

A1

Cleaning throttle valve moduleJ338
Cleaning throttle valve module -J338-
  Note
t  If a new engine control unit -J623- is installed, it must be adapted to the throttle valve module.
t  Carbon deposits and dirt in the throttle valve limit stop can lead to incorrect adaption values.
t  Take care not to scratch the throttle valve housing when cleaning it.
–  Remove throttle valve module -J338- → Chapter.
   
–  Open throttle valve by hand and block it in the open position with a suitable object (e.g. plastic or wooden wedge) -arrow-.
  WARNING
Acetone is highly flammable. Please observe all accident prevention regulations and safety precautions when handling flammable liquids. 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 throttle valve housing thoroughly, especially around the points -arrows- where the throttle valve closes, using commercially available acetone and a small brush.
–  Wipe out throttle valve housing with a lint-free cloth.
–  Allow acetone to evaporate completely and re-install throttle valve module after cleaning.
–  Erase learnt values and adapt engine control unit -J623- to throttle valve module -J338-. Use vehicle diagnostic tester to do so.
  N24-10124

Lambda probe > < Removing and installing throttle valve moduleJ338