Engine Control Module: Description and Operation

Engine Control Module

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

=> [ Engine Control Module Power Supply Relay, Checking ] Engine Control Module Power Supply Relay, Checking

=> [ Engine Component Power Supply Relay, Checking ] Engine Component Power Supply Relay, Checking

=> [ Engine Control Module, Replacing ] Service and Repair

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, fuel injectors and On Board Diagnostic (OBD).