Hyundai Motor due to the growing number of electronic control devices, its connecting wires inevitably showed increasing trends to ensure the correctness and reliability of wire to connect, the wire connectors played a very important role. Wire connector is a continuous outlet of cable bundles, all sensor terminals use a dedicated interface, control computer ECU and all external parts are connected through Connector on the ECU, and transfer the signals used in the wire harness line connector. It may be argued that, in electric vehicles, control ECU central control computer, wiring harness is a neural network control system, then the wire connector is the circuit wiring harness, relay stations. However, the connector in addition to ease of installation, wiring precise addition in use often fails, and the most common failure was poor contact leading to "network" interruption of signal transmission, direct impact on the performance of electric vehicles a good normal play. Wires and connectors of wires and connectors circuit breaker circuit breaker failure may be due to the wire used in the broken, poor contact between connector, the connector Terminal loose making.

As the cables are disconnected in the middle of failure is very rare, mostly in the connector is disconnected, so checks should focus on carefully check the sensor wire and connect Shun Department whether there is loose and poor contact. Caused by poor contact between connector circuit breaker failure, often due to the connector ends to a corrosive, dirty from the outside into the terminal or outlet, to reduce contact pressure. At this point, just detach the connector, and then replace the plug to change its connection status, bring it back to normal contacts. Wires and wires and connectors short-circuit fault fault may also be due to the wiring harness connector and body (Earth) or in the relevant switch between internal short-circuit caused by. Should first look at the body of the wire before checking whether the connectors are fixed securely, then you can follow these steps to test.

(1) check the wires breaking first of all remove the ECU control computer and sensors on both sides of the wire connector, and then measure the resistance between corresponding terminal connectors. If the resistance value is not greater than 1 ohm, then wire properly, so that next check. In measurement wire resistance Shi, best in vertical and level two a direction gently shake wire to improve measurement of accuracy, while attention, on most wire connection manager, and million with table table rod from connection manager of Hou end insert, but for with waterproof sets of waterproof type connection manager table rod on cannot from Hou end insert, because in insert Shi slightly does not carefully will will makes Terminal deformation.

(2) short-circuit resistance checks first disassemble the control computer ECU and sensor wire connector on both sides, further measurements on both sides of the connector between terminals and body resistance.