What is the cause of damage to the drivetrain data bus?

[MatthewRose]

Damage to the drivetrain data bus is caused by a faulty control unit leading to CAN line failure or the presence of open circuits, short circuits, etc. Below is relevant information about automotive electronic control units: 1. Introduction: Refers to a control device composed of integrated circuits used to achieve a series of functions such as analyzing, processing, and sending data. The automotive electronic control unit is the core component of the electronic control system; 2. Composition: The automotive electronic control unit mainly consists of four parts: an input circuit, an A/D converter, a microcomputer, and an output circuit. The main function of the input circuit is to preprocess the sensor input signals, converting them into signals that the microprocessor can accept; The function of the A/D converter is to convert analog signals into digital signals, such as signals from the air flow sensor and water temperature sensor; The microcomputer includes a CPU, memory, input/output interfaces, and a bus.