Volkswagen Passat 1995 Official Factory Repair Manual page 2151

Engine Control Module (ECM)
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Engine Control Module (ECM)
Function
The Engine Control Module (ECM) controls fuel
injection, the throttle valve control module,
oxygen sensor control, ignition, knock control,
EVAP canister purge regulator valve 1, engine
speed limitation via fuel injectors and fuel pump
relay, and On Board Diagnostic (OBD).
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12/6/2004