skoda Workshop Repair Guides

Skoda Workshop Manuals

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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.
   

2.0/85 kW engine > Self diagnosis, V.A.G Inspection Service > Descriptions of the functions of systems

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