求翻译：随着汽车工业的发展，电子控制系统在汽车上的应用越来越普遍。汽车上的电子控制部件越来越多，涉及到发动机、底盘和车辆行驶控制技术等方面。当其中的某一元件发生了故障，仅从其外表或依靠传统的检测工具很难去检查，现代新型的发动机管理系统中都设有自诊断功能，称为“车载故障诊断”，该系统的任务是不断监测车辆异常之处，从中找出故障。电控系统在提高汽车性能的同时，也使汽车的故障诊断变得复杂起来。本文简要介绍了汽车自我诊断系统的原理及特点，及依靠自诊断系统排除故障的有关技巧和注意事项。是什么意思？

With the development of the automotive industry, increasing the application of electronic control system in automobile. Automotive electronic control parts on more and more, related to the engine, chassis and vehicle control technology and so on. When a component fails, just from the appearance or rely on traditional testing tools are hard to check, in modern engine management systems are equipped with self-diagnostics function, known as the "car fault diagnosis", the system's mission is to continuously monitor the vehicle anomalies, find fault. Electric control system to improve vehicle performance while also automobile fault diagnosis was complicated. This article provides a brief introduction to the principles of self diagnosis system for automobile and features, and rely on self-diagnostics system for tips and considerations when troubleshooting.