论文部分内容阅读
故障现象:一辆依维柯客车,关闭起动开关后发动机不能及时熄火,而且充电指示灯点亮。故障检查:检查点火开关内部没有搭铁和不回位故障;用12伏电源测试电磁阀,在接通和断开电源时磁芯吸拉、保持和回位均良好。最后用万用表检查充电线路,发现与充电指示灯串联的二极管已击穿。故障
Symptom: a Iveco bus, the engine can not turn off the engine after the start switch is turned off, and the charging indicator light. Troubleshooting: Check the ignition switch is not built-in ground and not return fault; with 12-volt power supply test solenoid valve, the core when the power is turned on and off, keep and return are good. Finally, check the charging circuit with a multimeter and found that the diode in series with the charging indicator has been breakdown. malfunction