audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

ABOUT US
Removing and installing intake manifold flap motor V157 with intake manifold flap potentiometer G336 > < Removing and installing throttle valve module J338

A3 Mk2

Cleaning throttle valve moduleJ338
Cleaning throttle valve module -J338-
  Note
t  The throttle valve module must be adapted if a new engine control unit -J623- is installed.
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, especially around the points -arrows- where the throttle valve closes, using commercially available acetone (DIN 53247) 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, see vehicle diagnostic and service information system -VAS 5052-“Guided Functions”.
  N24-10124

Removing and installing intake manifold flap motor V157 with intake manifold flap potentiometer G336 > < Removing and installing throttle valve module J338