As the connecting wire connecting the car controller and other electrical modules, the automobile wiring harness carries the transmission task of current and corresponding signals. Therefore, the automobile wiring harness has certain waterproof requirements. This is because if the waterproofing of the live wire harness is unqualified, water may be Entering the controller or electrical module through the wiring harness may cause failure or even a short circuit, so the waterproof performance of the wiring harness is necessary, so how do you know whether the air tightness of the waterproofed automotive wiring harness meets the requirements? That is to say, how is the air tightness and waterproof detection of the automobile wiring harness done?

No matter what level of waterproof level testing is to be done, the key lies in the equipment and the air tightness test fixture of the automobile wiring harness. Generally, it is done by the direct test method through the air tightness and waterproof testing equipment of the automobile wiring harness. The test pressure of the waterproof testing equipment can be set according to the requirements, that is to say, only one equipment is needed to achieve IP67 or IP68 level measurement.

The specific air-tightness and waterproof detection of automobile wiring harness is to directly inflate after sealing the joints on both sides of the connector, and then the sensor in the air-tightness and waterproof detection equipment of the automobile wiring harness will detect the change of internal air pressure in real time, and the lower limit of the leakage value can be set. It is judged whether the sealing performance of the joints and wires on both sides meets the requirements. For unqualified products, there will be a NG light on and an alarm prompt.