The vehicle sensor is an input device of the automobile computer system. It converts various working condition information such as vehicle speed, temperature of various media, engine operating conditions, etc. into electrical signals and transmits them to the computer, so that the engine is in the best. Working status. There are many sensors for vehicles. When judging the fault of the sensor, you should not only consider the sensor itself, but should consider the entire circuit in which the fault occurs. Therefore, when looking for a fault, in addition to checking the sensor, check the wiring harness, the connector, and the related circuit between the sensor and the electronic control unit.