Wire and connector failure may also be caused by a harness and body ( earth) or between the relevant switch internal short circuit caused by. Before the examination should first look at the body of the wire connector fixing is reliable, and can be conducted according to the following procedure test.

(1) check the wire switching

First remove the control computer ECU and the sides of the transducer wire connector, and then measuring the resistance between the corresponding terminal of connector. Such as resistance less than 1 ohm, the line, for the next examination. In the measurement of the resistance of a wire, preferably in the vertical and horizontal two directions gently rocking wire to improve the measurement accuracy, at the same time, for the majority of the wire connector, multimeter table from the rear end of the connector is inserted into the rod, but for a waterproof jacket waterproof connector sheet bar cannot from the back end is inserted, because when inserted in a slightly accidentally causes the terminal deformation. (2) short circuit resistance check

First remove the control computer ECU and the sides of the transducer wire connector, and connector terminals on both sides of the measurement and the body resistance value. When measuring meter rod end is grounded, connected with the vehicle body, the other end is respectively at opposite sides of the wire connector for measuring resistance value, if greater than 1 ohms is illustrated in the wire and the body without short circuit fault.

Connector appearance and contact pressure check

First of all should be individually remove the wire connector, connector terminals have no rust check contact and dirt, rust and dirt should be cleaned up to. Then check the terminal piece is loose or damaged, the fixing terminal whether firm, gently pull terminals shall be no loose. Conversely, if where a seat hole in the plug terminal pull-out than other seat easy hole, the hole may be in use will cause bad contact fault.

Check the matters needing attention

(1) connector check must be in the ignition lock closed state, otherwise they will be perceived and burned the relevant parts.

(2) remove the wire connector, attention should be paid to loosen the locking spring or by pressing the locking, don't pull forcedly pull, refitted, should be inserted in the end connector and lock.

(3) for a waterproof connector to remove detection, attention should be carefully removed the holster, when installed waterproof jacket should be in place, otherwise, likely due to water entering the connector to circuit fault.

(4) in using a multimeter to check connector, table insert rod can not be pair of terminal force is too large, to guard against the end piece deformation caused by poor contact.