WARNING | Please observe the following when undertaking all assembly work, particularly in the engine compartment, due to its cramped construction. |
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| Lay lines of all kinds (e.g. for fuel, hydraulic fluid, the active charcoal container-unit, cooling fluid and refrigerent, brake fluid, vacuum) and electrical lines in such a way that the original line guide is re-established. |
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| Ensure that there is adequate free access to all moving or hot components. |
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| The secondary air injection system blows air in the escape valve for a short time 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- through the secondary air pump relay -J299- to the secondary air injection valve (-N112- changeover valve) and combination valve. |
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