Automatic detection method and system for automobile off-line initialization

Abstract

The invention provides an automatic detection method and system for automobile off-line initialization. The detection method comprises: S1, a detection device is connected to a vehicle-mounted diagnostic system and overall-vehicle electrification is determined; S2, a key-free starting system receives an overall-vehicle power-off instruction sent by the detection device; and when a gear signal from a gearbox control system is determined to be a parking gear, a vehicle speed signal from a brake control system is determined to be zero, and the brake control system is determined to have no brake signal by a CAN bus, an electrifi8cation relay is disconnected and over-vehicle electrification is carried out; and S3, after predetermined waiting time, the key-free starting system receives an overall-vehicle electrification instruction sent by the detection device; and when a legal key is detected and the brake control system is determined to have no brake signal, the electrification relay is driven for actuation and overall-vehicle electrification is carried out.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method and system for automatic detection of automobile off-line initialization. Background technique [0002] After the car is assembled on the production line of the assembly plant, it is generally necessary to complete the function configuration, detection, and reading of the fault code (DTC) of the electronic control unit (ECU) at the initialization station. As the number of electronic control units continues to increase, more and more testing needs are required, and the production line has problems such as long testing hours and cumbersome manual operations. Among them, the operation of powering on and off the entire vehicle takes the longest working hours. The purpose of re-powering off and on the whole vehicle is to complete a restart of the electric appliances of the whole vehicle. During the detection process, the diagnostic reset command can be sent to each electr...

AI Technical Summary

Problems solved by technology

[0003] On models with automatic transmission of the keyless start system (PEPS), as the configuration becomes richer, the number of electronic control units continues to increase, and the communication logic becomes more and more complex. Resetting during the process, that is, restarting the software, can automatically realize the purpose of restarting the electronic control unit, but the detected electronic control unit will interrupt the communication during the reset process. , enter the failure mode, even if the detected electronic control unit resumes communication, the failure mode of other electronic control units may not exit, resulting in unqualified test results

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