Jetta Sedan L5-2.5L (BGP) (2005)
Engine Control Module: Description and Operation
Function
The Motronic Engine Control Module (ECM) J220 controls fuel injection, the Throttle Valve Control Module J338, oxygen sensor control, ignition,
knock control, Evaporative Emission (EVAP) Canister Purge Regulator Valve N80, engine speed limitation via fuel injectors and Fuel Pump (FP) Relay
J17, as well as the On Board Diagnostic (OBD).