故障现象一辆2007年生产的帕萨特领驭轿车,搭载BGC发动机,行驶里程约为15万km。据驾驶人反映,该车仪表照明灯有时会自动点亮,同时驾驶室内的开关照明灯也会一起点亮。故障诊断接车后试车发现,故障现象与驾驶人所述一致。另外,笔者还注意到在故障发生时,雾灯、转向灯、停车灯、牌照灯及前照灯均未点亮。为了能快速准确地将故障排除,笔者没有急着动手去查找故障位置,而是决定先查看维修资料,理清该车开关和仪表照明灯的电路。 Fault phenomenon A 2007 Passat Lingyu sedan, equipped with BGC engine, mileage of about 150,000 km. According to the driver reflected, the car instrument lights sometimes automatically lit, while the cab switch lights will be lit together. Troubleshooting After the car was unloaded, it was found that the fault phenomenon was consistent with that of the driver. In addition, I also noticed that in the event of a malfunction, the fog lights, turn signals, parking lights, license plate lights and headlamps were not lit. In order to quickly and accurately troubleshooting, I did not hurry to find fault location, but decided to view the maintenance information, sort out the car switch and instrument lighting circuit.