The causes of ECU failure are: power circuit failure; Output power module failure; Memory failure, ECU water intake, damp failure.
ECU means electronic control unit, which is a special microcomputer controller for automobile in application. It is composed of microprocessor, memory, input/output interface, analog-to-digital converter, shaping, driving and other large-scale integrated circuits.
General ECU has the function of fault self-diagnosis and protection. When the system fails, it can also automatically record the fault code in RAM, and take protective measures to read the replacement program from the above-mentioned inherent program to maintain the operation of the engine.