audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Engine Control Module|Testing and Inspection > < Understanding Track Style Wiring Diagrams, Important Stuff !|Page 3050
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Engine Control Module: Description and Operation

    The electronic control unit is designed to constantly adjust the air/fuel mixture based on the signal from the oxygen sensor.  The ECU does this by
sending a signal to the frequency valve, which alters the control pressure at the fuel distributor.

Engine Control Module|Testing and Inspection > < Understanding Track Style Wiring Diagrams, Important Stuff !|Page 3050