ECU (Electronic Control Unit), also known as "trip computer" and "vehicle computer". In terms of use, it is a special microcomputer controller for automobiles.

Like an ordinary computer, it consists of a microprocessor (MCU), a memory (ROM, RAM), an input/output interface (I/O), an analog-to-digital converter (A/D) and a large-scale integrated circuit such as shaping and driving. To describe it in a simple sentence is "ECU is the brain of a car".

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Common causes of ECU damage?

1. When welding and repairing the frame, the ECU wiring was not disconnected. Because when welding and repairing the frame, the change of current will produce extremely high induced electromotive force, which will cause damage to ECU through the line. ?

2. When the battery power is insufficient, directly use the direct SCR charger to charge, and the higher harmonics generated by the SCR circuit will damage the ECU. ?

3. Or is it because the charger voltage is too high, the polarity is reversed when charging, or the ignition switch is turned on or even the generator is started?

4. When the maintenance personnel disassemble the ECU at will, touch the interface of the electronic control unit with their hands or weld the CMOS chip of the ECU with a soldering iron without grounding function, the CMOS chip may be broken down by static electricity. ?

5. When the engine is running, the positive and negative poles of the battery are suddenly disconnected. In this case, the circuit will produce high induced electromotive force, which may lead to the breakdown of electronic components inside the ECU.

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