First check the fuse to see whether the fuse, and then pull off the horn plug, using a meter measurement in the horn switch when there is electricity.
首先检查保险丝看是否熔断，然后拔下喇叭插头，用万用表测量在按喇叭开关时此处是否有电。
Is the plug in properly? Has the power supply been cut off? Has the fuse broken?
插头是否正确？电源切断了吗？保险丝是否完好？
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