The failure of wires and connectors can also be caused by a short circuit between the harness and the body (ground) or within the relevant switch. Before checking, you should first check whether the wire connector on the body is firmly fixed, and then you can test according to the following steps.

(1) Check the continuity of the wire
First, remove the wire connectors on both sides of the control computer ECU and the sensor, and then measure the resistance between the corresponding terminals of the connector. If the resistance value is not more than 1 ohm, the wire is normal, so that the next step can be checked. When measuring wire resistance, it is best to shake the wire slightly in both vertical and horizontal directions to improve the accuracy of the measurement. The stem of the waterproof connector with the waterproof cover cannot be inserted from the rear, because the terminal can be deformed if inserted carelessly.

(2) Resistance value detection of short circuit
First, remove the wire connectors on both sides of the control computer ECU and the sensor, and then measure the resistance between the terminals of the connectors on both sides and the body. When measuring, one end of the watch rod is grounded to the body, and the other end should be measured on the wire connectors on both sides respectively. If the resistance value is greater than 1 ohm, it means that the wire and the body have no short-circuit fault.