What does ECU mean?

[Ben]

ECU in automobiles refers to the Electronic Control Unit, also known as the vehicle computer or onboard computer. In terms of its function, it serves as a dedicated microcomputer controller for vehicles. Common causes of ECU damage are as follows: 1. Not disconnecting ECU wiring: During welding repairs on the vehicle frame, failing to disconnect the ECU wiring can be harmful because the current changes during welding generate extremely high induced electromotive force, which can damage the ECU through the wiring. 2. Direct charging: When the battery is low, using a silicon-controlled rectifier (SCR) charger for direct charging can produce high-order harmonics from the SCR circuit, which may damage the ECU. 3. Excessive electrical voltage: Due to excessively high charger voltage, reversed polarity, or charging while the ignition switch is on or even while starting the generator. 4. Unauthorized disassembly of the ECU: If maintenance personnel disassemble the ECU without proper precautions, touch the control unit interface with their hands, or use a soldering iron without grounding to solder the ECU's CMOS chip, it can lead to electrostatic discharge that may break down the CMOS chip. 5. Sudden disconnection of battery terminals: If the positive and negative terminals of the battery are suddenly disconnected while the engine is running, the circuit can generate a high induced electromotive force, potentially causing the internal electronic components of the ECU to be damaged.