The ECM is similar to the ECU in function, but may be used interchangeably depending on the manufacturer. It acts as the brain of the engine, controlling critical processes and responding to changing conditions on the road. PCM (Powertrain Control Module) The PCM, or Powertrain Control Module, is an integrated control unit that oversees the engine, transmission, and other components of the powertrain system. It plays a vital role in coordinating the operation of various systems to maximize ...

The ECM is similar to the ECU in function, but may be used interchangeably depending on the manufacturer. It acts as the brain of the engine, controlling critical processes and responding to changing conditions on the road. PCM (Powertrain Control Module) The Nissan Xterra PCM, or Powertrain Control Module, is an integrated control unit that oversees the engine, transmission, and other components of the powertrain system. It plays a vital role in coordinating the operation of various system...