Engine Control Module: Description and Operation

Engine Control Module

=> [ Engine Control Module Voltage Supply, Checking ] Engine Control Module Voltage Supply, Checking

=> [ Engine Control Module, Replacing ] Engine Control Module, Replacing

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) Relay (J17) as well as On Board Diagnostic (OBD).