Wire and connectors short-circuit fault wire and connectors fault can also be caused by wire and body (ground) or in the switch between internal caused by the short circuit. Check first to see in the body shall, before the wire connectors whether fixed firm, then can press the following steps to carry out the testing. (1) check the wiring hige first remove the control computer ECU and on both sides of the sensor wire connectors, to measure the resistance of the corresponding terminal connector between. Such as resistance is not more than 1 ohms, show wires normal, for the next check. When measuring lead resistance, best in vertical and horizontal two direction gently moved to improve the measuring accuracy of the wire, and note that for most wire connectors, with all the great connector crewmen should end insert, but for a waterproof set of waterproof model of connector table stick from the back end plug into the can, because the insert a careful when will make terminal deformation. (2) a short circuit resistance check first remove the control computer ECU and on both sides of the sensor wire connectors, again both sides each terminal connector measurement and between the body resistance. Measurement, table great end take iron meet body, the other end to the wire connector on both sides are measured, if more than one ohm resistance value is indicated that the wire to body without fault.

Connectors appearance and contact pressure check first should be removed by the wire connectors, check the connector terminals have rust touch and smudgy, corrosion and smudgy should be clear to him. Then check whether loose or damage of terminals, terminal whether fixed firm, in gently pull terminal should be no loose when phenomenon. Conversely, if a seat in the hole where plug pulled out than other seat when terminal hole easily, the a hole in use can cause may be 

Contact undesirable fault. Check the attention in (1) the connector in the ignition examination must lock closed under state, otherwise, it will burn out relevant parts and for self inductance. (2) removed wire connector, should pay attention to loosen locking spring or press lock, do not pull hard ye, refitted, should be put on the connector and the lock. (3) for waterproof model connector in dismantling the detection, attention shall be paid to take careful holster, installation is waterproof covered should reach the designated position, otherwise, possibly for the water into the connector and cause electrical fault. (4) in using a multimeter to check connector, table great when insertion of terminal not greatly too forcibly, in case the slice deformation caused by bad contacts in the meet.