Anti-theft system initialization method, equipment and anti-theft ECUs

Abstract

The invention provides an anti-theft system initialization method, equipment and anti-theft ECUs. Before the anti-theft matching is performed for the anti-theft ECUs, matching states of the anti-theft ECUs are judged; the anti-theft ECUs after the anti-theft matching or from bad sources are separated out, and the blank anti-theft ECUs without performing the anti-theft matching are matched to generate and write in anti-theft codes so as to prevent wrong learning and wrong matching of keys due to repeated matching of the anti-theft ECUs. Before the key learning is performed, the anti-theft states of the anti-theft ECUs are judged again, and the anti-theft ECUs unsuccessful in anti-theft matching or having faults in the matching are separated out, so that part waste caused by incapability of use and recovery after the key learning can be prevented effectively. The whole anti-theft and key learning process is monitored, and error and failure factors generated in the anti-theft initialization process are recorded and output to provide reliable basis for repair, so that the repair efficiency and the success rate are improved.

Description

technical field [0001] The invention relates to offline detection of a diagnostic system in the field of automotive electronics, in particular to a method, device and anti-theft ECU for anti-theft matching and key learning. Background technique [0002] With the popularization of automobiles in people's lives, the phenomenon of lost cars also occurs from time to time. Therefore, the anti-theft system has become one of the important configurations of automobiles. At present, most of the electronic anti-theft systems used in automobiles are provided by parts suppliers with a blank anti-theft electronic control unit (ECU), and then the OEMs use the offline equipment to uniformly match the anti-theft code and perform key learning when they are offline. Realize the initialization of the anti-theft system. The initialization of the anti-theft system needs to write the anti-theft code in the anti-theft ECU and the key (that is, anti-theft matching and key learning), and the anti-t...

AI Technical Summary

Problems solved by technology

In actual production, due to operator misoperation, defective anti-theft ECU and key, or repair, etc., the same anti-theft ECU or key is initialized several times, resulting in different anti-theft codes being written into the anti-theft ECU or key, resulting in The anti-theft ECU is wrongly matched and the key is wrongly learned the anti-theft code, so the repair rate is high and the production efficiency is reduced

At the same time, since the matching process of the anti-theft ECU and the learning of the key are one-time and irreversible, if the matching learning fails, it will lead to waste of parts and increase the production cost of the factory

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