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故障现象一辆宝马535车,累计行驶里程约为3万km,出现发动机熄火后前照灯常亮的故障现象。故障诊断接车后维修人员根据客户反映的内容进行检查,发现该车熄火锁车后前照灯依旧保持点亮状态。在对车辆解锁,接通点火开关的情况之下前照灯常亮,不受灯光开关的控制,且无论在设置中如何设置白天行车灯,灯都是一直亮着的。连接故障检测仪,测得的结果如图1所示。根据读得的结果进行检查,测量灯光开关的供电和搭
Symptoms A BMW 535 car, the cumulative mileage of about 30,000 km, there is the engine headlamps turn off the lights lit normally fault phenomenon. Troubleshooting After the car pick-up maintenance staff based on the content of the customer inspection and found that the car lights off the car after the headlight remains lit. In the case of unlocking the vehicle and turning on the ignition, the headlights are constantly on and are not under the control of the light switch, and the light is on all the time regardless of the setting of daytime running lights. Connect the fault detector, the measured results shown in Figure 1. According to the results of the test to read, measure the light switch power supply and ride