ENGINE CONTROL UNIT (ECU):
DIAGNOSTICS and SYSTEM OPERATION for the 20V Turbo 5 Cylinder Engines

1991 200TQ 2.22 litre 20V (3B engine), 1992-96 S4/S6 2.22 litre 20V (AAN engine)


20V Turbo Engine, FAULT CODE READING, OUTPUT TESTS


20V Turbo Engine, ENGINE SENSORS AND COMPONENTS



20V Turbo Engine, Wiring, Connector Pin Out, ECU Internal Photos

IMPORTANT SAFETY INFORMATION

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