Understanding Power Train Control Module

Powertrain Control Module

PCM (Powertrain Control Module), ECU (Engine Control Unit), and ECM (Engine Control Module) are all interchangeable generic acronyms for the same thing: a control unit for the engine/transmission system. Manufacturers, vehicle sales, mechanics, auto technicians, electronic engineers, and the general public will frequently use various terms depending on who is speaking. There are, however, distinctions […]