What is ECM? The Engine Control Module (ECM) is another term used interchangeably with ECU in some contexts. However, ECM typically refers to older, less advanced systems that focus solely on engine functions without the broader scope of the PCM. The PCM oversees the engine and transmission functions in coordination with other vehicle systems. It regulates fuel delivery, emissions control, and transmission shifting for optimal performance. ...

What is ECM? The Engine Control Module (ECM) is another term used interchangeably with ECU in some contexts. However, ECM typically refers to older, less advanced systems that focus solely on engine functions without the broader scope of the PCM. The PCM oversees the engine and transmission functions in coordination with other vehicle systems. It regulates fuel delivery, emissions control, and transmission shifting for optimal performance. ...