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Skoda Workshop Service and Repair Manuals

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Engine control unit > < Testing the intake system for tightness (unmetered air)

Fabia Mk1

Clean throttle valve control unitJ338
Clean throttle valve control unit -J338-
  Note
t  If a new engine control unit -J361- is fitted, the throttle valve control unit -J338- must be adapted. The adaptation must only be carried out with a new or cleaned throttle valve control unit -J338-, because dirt/carbon deposits in the end stop of the throttle valve can lead to incorrect adaptation values.
t  The throttle valve support must not be scratched when cleaning.
–  Remove the air filter housing → Chapter
–  Remove the throttle valve control unit → Chapter.
   
–  Open the throttle valve manually and block the throttle valve in the opened position with a suitable object (e.g. plastic or wooden wedge)-arrow-.
  WARNING
Acetone is easily inflammable. Observe the accident prevention regulations and the safety instructions when handling easily inflammable fluids. Do not use compressed air when cleaning the throttle valve. Wear safety goggles and safety clothing, in order to avoid injuries and skin contact.
  N24-10125
–  Thoroughly clean the throttle valve support, in particular the area of the closed throttle valve -arrows-, with commercially available acetone in accordance with DIN 53247 and a paint brush.
–  Wipe the throttle valve support with a non-fluffy cloth.
–  Let the acetone dry off completely and re-install the cleaned throttle valve control unit.
–  Adapting the engine control unit -J361- to the throttle valve control unit -J338- → Vehicle diagnostic tester.
  N24-10124

Engine control unit > < Testing the intake system for tightness (unmetered air)