Engine Control Module
The Engine Control Module (ECM) -J623- regulates fuel injection, Throttle Valve Control Module -J338-, oxygen sensor regulation, ignition, knock control, Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-, engine speed limitation through fuel injectors or Fuel Pump (FP) Control Module -J538- as well as On Board Diagnostics (OBD).