自20世纪80年代以来,汽车的电子化程度逐年增加,使汽车进入高科技产品的范畴,并被看作是衡量一个国家汽车工业发展水平的重要标志,成为汽车生产者取得市场竞争优势的重要手段。电子技术已经被广泛应用于汽车发动机控制、底盘控制、车身控制、故障诊断以及音响、通讯、导航等方 Since the 1980s, the electronic degree of automobiles has been increasing year by year, bringing the automobile into the category of high-tech products and being regarded as an important indicator to measure the development level of a country’s automobile industry and becoming the important factor for automobile manufacturers to gain market competitive advantage means. Electronic technology has been widely used in automotive engine control, chassis control, body control, fault diagnosis and audio, communications, navigation and other parties