如何检查和测试自动继电器的分步指南

汽车继电器是车辆电气系统中的关键部件。它们充当打开和关闭电气功能的开关，例如前灯、空调或燃油泵。当这些功能出现故障时，通常是由于继电器故障造成的。因此，了解如何检查和测试汽车继电器对于任何车主来说都是一项宝贵的技能。

序列号	文章名称
6	自动中继

首先，您需要一个万用表，一种测量电压、电阻和电流等电气特性的设备。您可以在任何汽车配件商店或在线购买。您还需要车辆的维修手册，其中将提供有关您车内继电器的具体信息。

编号	名称
5	自动中继

首先，找到要测试的继电器。维修手册将提供装有继电器的保险丝盒的示意图。通常，保险丝盒位于引擎盖或仪表板下方。找到继电器后，将其从保险丝盒中取出。

To test the control circuit, connect the multimeter probes to the appropriate Terminals. The multimeter should display a resistance value. If it shows infinite resistance (often denoted by a “1” on the far left of the display), the control circuit is not functioning correctly, and the relay needs to be replaced.

To test the load circuit, you’ll need to apply power to the control circuit. This can be done by connecting a jumper wire from the battery’s positive terminal to one of the control circuit terminals on the relay, and another jumper wire from the battery’s negative terminal to the other control circuit terminal.

With power applied to the control circuit, connect the multimeter probes to the load circuit terminals. The multimeter should now display a resistance value close to zero, indicating that the load circuit is functioning correctly. If it shows infinite resistance, the load circuit is not functioning correctly, and the relay needs to be replaced.

Nr.	Designation
2	Car Relay

Remember to disconnect the jumper wires and turn off the multimeter when you’re done testing.

In conclusion, checking and testing Auto Relays is a straightforward process that requires a multimeter and a vehicle’s service manual. By following these steps, you can diagnose and fix electrical issues in your car, saving you time and money on unnecessary trips to the mechanic. However, if you’re unsure about any part of the process, it’s always best to consult a professional.