Remove the blown fuse and measure the resistance between the loaded end of the blown fuse and ground. Turn off all circuit switches connected to this fuse. In this case, its resistance value is about 0Ω, and there may be a short circuit somewhere between the switch and the load. When the resistance value is not 0Ω, it means there is no short circuit, but the instantaneous load voltage is too high, which may also cause the fuse to blow.拆卸熔断的保险丝，并测量熔断保险丝加载端和搭铁之间的电阻值。关闭与该保险丝相连的所有电路开关。该情况下，其电阻值约为0Ω，开关与负载之间的某处可能存在短路。当电阻值不为0Ω时，表示无短路现象，但负载瞬间电压过高也可能导致保险丝熔断。
Note:提示：
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The main causes of short circuit include the following:短路的主要原因包括以下几种：
i.
Damage to the outer surface of the wiring harness due to wear or overheating.由于磨损或过热导致线束外表面损坏。
ii.
Water has entered the connector.接插件进水。
iii.
Human failure, etc.人为故障等。
2
When replacing a fuse, make sure the new fuse has the correct amperage rating. It is prohibited to use fuses that exceed the rated value or lower than the rated value.在更换保险丝时，要确保新保险丝电流强度额定值是正确的。禁止使用超过额定值或低于额定值的保险丝。
Fuse inspection and repair保险丝的检测维修
