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例1 S38熔丝频繁熔断,油箱盖无法开启故障现象一辆宝来1.8T 乘用车,驾驶人反映 S38熔丝频繁熔断,导致油箱盖和行李箱无法正常电动开启等故障,每次加油时都要换上一个新的熔丝,为此特地买了一盒熔丝。故障排除首先考虑熔丝熔断的原因是电路短路或用电器内部损坏,导致电流过大。查阅电路图得知,S38熔丝控制以下电路:行李箱照明灯、舒适系统、中央门锁、油箱盖电动开启装置和行李箱盖电动开启装置。更换一个新的熔丝,逐一重复使用以上各用电器,发现各用电器均能正常工作,这说明各用电器本身工作正常,故障原因可能是电路中某处有时会短路搭铁。为了使故障再现以便进行下一步的检查,决定试车。结果发现该车没行驶多远该熔丝就熔断了,
Example 1 S38 fuse blown frequently, the fuel tank cap can not open Fault phenomenon A Polaris 1.8T passenger car, the driver reflects the S38 fuse frequently blown, resulting in the fuel tank cap and trunk can not be electrically opened and other failures, each refueling time To replace a new fuse, for which purpose bought a box of fuses. Troubleshooting First consider the fuse blown because the circuit is short-circuited or internal damage, leading to excessive current. The circuit diagram shows that the S38 fuse controls the following circuits: trunk light, comfort system, central door lock, fuel lid power-on device and boot lid power-on device. Replacement of a new fuse, one by one to reuse the above appliances and found that all electrical appliances can work properly, indicating that the electrical appliances themselves are working properly, the fault may be somewhere in the circuit may sometimes short circuit. In order to reproduce the fault for the next inspection, decided to test. The results found that the car did not drive far the fuse is blown,