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Home >> Audi >> 2001 >> S4 Quattro, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Crash Signal
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Crash Signal

The ECM receives crash signal from the Airbag Control Module (ACM), when ACM determines that vehicle has been in an accident. ECM after receiving crash signal shuts fuel pump off, causing engine to stall. Engine can be restarted once safety has been assured.