Motor vehicle fault detection method and device

Abstract

The invention relates to the technical field of motor vehicle maintenance, in particular to a method and a device for detecting a fault of a motor vehicle. The fault detection method of the motor vehicle comprises the steps as follows: binding posts are led from all contact points of a bus port of an ECU (electronic control unit); the led binding posts are gathered, so that an adaptor is formed; numbers which are in one-to-one correspondence are set; original wires are pulled up, and wires without faults are used for connection; and if the device operates normally, faults of the wires are determined. The invention further provides a fault detection device of the motor vehicle. The device comprises the adaptor and the wires, wherein the adaptor is electrically connected with the ECU of the motor vehicle during the use and comprises a circuit board and a plurality of binding posts protruding outwards; the wires are electrically connected between the adaptor and the detected device when used and comprise a plurality of leads, and the shape of one end of each lead is matched with the shapes of the binding posts on the adaptor; and the other end of each lead is integrated into an interface and matched with a wiring port of the detected device. According to the method and the device, wire-breaking searching is not required, and the integrity and the fastness degree of an original line are guaranteed.

Description

technical field [0001] The invention relates to the technical field of motor vehicle maintenance, in particular to a motor vehicle fault detection method and device. Background technique [0002] With the continuous development of the motor vehicle industry such as automobiles and motorcycles, a large number of motor vehicles have been put into use, resulting in a large maintenance business. [0003] In related technologies, in the maintenance process of automobiles and motorcycles, it is first necessary to determine the location of the fault, that is, it is first necessary to know whether it is a line fault or an equipment fault. However, because the structure of the equipment itself is relatively complex and difficult to disassemble, and the cost is relatively high, at present, when maintenance personnel judge the location of a fault, they generally use the method of pulling apart or cutting the original vehicle wiring harness and dialing on the original vehicle. Lines an...

AI Technical Summary

Problems solved by technology

However, because the structure of the equipment itself is relatively complex and difficult to disassemble, and the cost is relatively high, at present, when maintenance personnel judge the location of a fault, they generally use the method of pulling apart or cutting the original vehicle wiring harness and dialing on the original vehicle. Lines and flying leads to determine whether the fault location is a problem with the wiring harness or the device

Obviously, in this method, the repair process will damage the original car wiring harness, and the firmness of the damaged position will be reduced, thus leaving a potential safety hazard for the entire vehicle and system

[0004] In summary, the motor vehicle fault detection method in the prior art has the technical problem of destroying the original wiring harness

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