The PCM is a integrated control unit that oversees the entire powertrain system, including the engine, transmission, and other related components. It regulates fuel delivery, ignition timing, and emissions to ensure smooth operation. The ECM specifically focuses on the engine's operation, monitoring sensors, and adjusting parameters for optimal performance. It controls functions like fuel delivery, ignition timing, and emissions systems. ECM issues may arise from sensor failures, wiring d...

The PCM is a integrated control unit that oversees the entire powertrain system, including the engine, transmission, and other related components. It regulates fuel delivery, ignition timing, and emissions to ensure smooth operation. The ECM specifically focuses on the engine's operation, monitoring sensors, and adjusting parameters for optimal performance. It controls functions like fuel delivery, ignition timing, and emissions systems. ECM issues may arise from sensor failures, wiring d...