Due to the continuous increase in electronic control devices, the number of connecting wires is inevitably increasing. To ensure the correctness and reliability of wire connections, wire connectors play a very important role. It has good electrical functions and is compatible with widely used automotive electronic wiring harness connectors A wire connector is a socket connected to a wire harness, and all information sensing terminals use dedicated network interfaces. The connection between the control system computer ECU and all external enterprise components can be through the connectors on the ECU, and the signal transfer in the wire harness is also achieved through wire connectors. And it has good durability, repeatability, and resistance to damage It can be said that in electric vehicles, the ECU controls the computer as the control center, and the control system harnesses the neural network, which then connects the harness circuit connector to a relay station. However, in addition to ease of installation and accurate wiring, connectors often fail in use. The most common problem is poor contact, which leads to the interruption of network signal transmission and directly affects the normal function of electronic controlled vehicles Firstly, each wire joint should be removed one by one, and the joint terminals should be checked for rust and dirt. Rust and dirt should be cleaned up. When dismantling and testing waterproof connectors, attention should be paid to carefully removing the leather cover. When installing the waterproof cover, it should be in place. Otherwise, the system circuit may malfunction due to water entering the connector The inspection of this connector must be carried out when the incineration lock is closed, otherwise it may feel related to the burning. If the plug terminal in which socket is easier to insert than other sockets, that socket may have poor performance in the application When removing the wire connector, be careful to loosen the locking spring or press the lock buckle, not to forcefully pull it. When reinstalling, insert the connector to the bottom and lock it. Then check whether the terminal strip is loose or damaged, whether the terminal is securely fixed, and whether there should be no looseness when gently pulled