est The Engine Control Module (ECM) is another term used interchangeably with the ECU or PCM, depending on the vehicle manufacturer. It performs similar functions in monitoring and regulating engine performance but may have slight variations in design and features. The ECM, or Engine Control Module, is similar to the ECU in that it manages engine functions but is typically used in older vehicle models. It controls ignition timing, fuel injection, and emissions systems to keep the engine ru...

est The Engine Control Module (ECM) is another term used interchangeably with the ECU or PCM, depending on the vehicle manufacturer. It performs similar functions in monitoring and regulating engine performance but may have slight variations in design and features. The ECM, or Engine Control Module, is similar to the ECU in that it manages engine functions but is typically used in older vehicle models. It controls ignition timing, fuel injection, and emissions systems to keep the engine ru...