skoda Workshop Repair Guides

Skoda Workshop Service and Repair Manuals

Self diagnosis, safety measures, cleanliness regulations, directions > < Engine characteristics
Function of the secondary air injection system
Function of the secondary air injection system
The secondary air injection system blows air behind the escape valve during a cold start. This enriches the exhaust gas with oxygen, initiates a post-combustion and thus shortens the heating-up phase of the catalytic converter. Actuation is performed by the Motronic control unit -J220- over the secondary air pump relay -J299- to the combination valve.
   

Self diagnosis, safety measures, cleanliness regulations, directions > < Engine characteristics