1、 目 录 摘 要 I Abstract . II 第 1 章 绪 论 1 第 2 章 汽车电气的测试 3 2.1 基本测试. 3 2.1.1 电路质量的测试. 3 2.1.2 电路故障的测试. 3 2.2 测试范例. 3 2.2.1 启动电路测试. 3 2.2.2 电源电路测试. 3 2.3 仪表系统的测试. 4 2.3.1 稳压器的测试. 4 2.3.2 水温表及传感器的测试. 4 2.3.3 燃油传感器及机油压力传感器的测试. 4 2.4 信号系统的测试. 4 2.4.1 电喇叭的测试. 4 2.4.2 闪光继电器的测试. 5 第 3 章 汽车电气的诊断方法 6 第 4 章 汽车电气故障的
2、检修 7 4.1 电源电路常见故障的诊断. 7 4.1.1 全车无电. 7 4.1.2 电源控制开关指示灯不亮. 7 4.1.3 电源控制开关失效. 8 4.2 起动电路常见故障的诊断. 9 4.2.1 起动时起动继电器不工作. 9 4.2.2 起动继电器有响声起动机不转 10 4.3 故障实例 10 4.3.193 款丰田皇冠 3.0 轿车热车无法起动 10 4.3.294 款丰田佳美 3.0 轿车仪表板下 29 号保险片一插就烧. 11 结 论 . 13 致 谢 . 14 参考文献 . 15 I 摘 要 随着现代汽车电子设备的增多,汽车电路及电器出现的故障愈显复杂。当汽车 电气系统发生故障
3、时,就给对汽车电气系统进行检测、诊断与维修,在检测、诊断 与维修过程中就给需要维修技师对汽车电气系统有扎实的理论基础和过硬的实践 技能,还要有合适的诊断方法。这样,发生故障后,选用合适的诊断方法为能否顺 利排除故障的关键。掌握汽车电路故障的诊断方法与步骤,可使排除汽车电气故障 变的简单有序。 除此之外, 当今社会电子技术迅猛发展并与现在的汽车产业相结合, 把现在的汽车从原有的以机械控制为主变成现在的以电控控制为主。这样就对汽车 维修人员的要求越来越高,这就要求维修人员不断的更新知识,自我学习,跟上科 技的发展,才能顺利的解决故障。 关键词:电路 单线制 系统 电子设备 灯光 II Abstra
4、ct Auto Circuit a single system of parallel circuit, which is looking at the overall, there are still in the local circuit in series, parallel and hybrid circuits. In fact, the entire car by the circuit is formed by the various circuits, each circuit can be independent points out, the complex simple
5、. All car circuit in accordance with the basic use can be divided into lighting, signals, meters, and started the ignition, charging, such as auxiliary circuit. Each circuit has its own wire and load control switch or fuse box link. With modern automotive electronics equipment and the growing number
6、 of automotive electrical circuits and the failure become more complex. After the failure to choose the appropriate diagnostic methods for troubleshooting can smooth the key. Of Auto Circuit fault diagnosis methods and steps to exclude automobile electrical fault can change a simple and orderly. In addition, todays society the rapid development of electronic technology, in the car of the universal application of the vehicle maintenance staff increasingly high demands, which requires consta