Fault code storage management method for automobile active stabilization control system

Abstract

The invention belongs to a method for storing and managing the fault codes by an automotive active stability control system in the field of vehicle driving safety management system. The automotive active stability control system uses an automotive electronic stability program (ESP) for storing and managing the fault codes; the automotive ESP fault code storage and management is a way that an ESP fault diagnosis system defines, stores and reads the fault codes; firstly the ESP defines the fault codes according to the fault type, leads each fault code to be corresponding to each byte address in a designated storage unit one by one; the storage of the fault codes is carried out in a mode of changing the mark bit of a corresponding storage byte thereof; the fault diagnosis results are stored in chronological sequence from the high bit to the low bit of the corresponding bytes in sequence, thereby ensuring the characteristics of non-volatility, historicity, simple algorithm, high efficiency, and short operating cycle for the fault diagnosis result data storage of the system, guaranteeing the vehicle driving stability and greatly improving the driving safety of the vehicle.

Description

technical field [0001] The invention belongs to the field of vehicle running safety management systems, and in particular relates to a method for storing and managing fault codes by an active stability control system of an automobile to ensure vehicle running stability. Background technique [0002] The current automotive ESP fault diagnosis system adopts the method of directly storing the fault code into the specified non-volatile memory address for fault code storage management. This method can only record the diagnosis result of the latest corresponding fault type in one memory byte. , can not store the historical records of this type of fault diagnosis results, and provide less information for accident repairs, especially for intermittent faults, the previous fault codes may be cleared because the last diagnosis has no faults, which is not conducive to fault repairs and timely elimination of safety hazards ; This storage method also causes a waste of system storage resou...

AI Technical Summary

Problems solved by technology

[0002] The current automotive ESP fault diagnosis system adopts the method of directly storing the fault code into the specified non-volatile memory address for fault code storage management. This method can only record the diagnosis result of the latest corresponding fault type in one memory byte. , cannot store the historical records of this type of fault diagnosis results, and provide less information for accident repairs, especially for intermittent faults, the previous fault codes may be cleared because the last diagnosis has no faults, which is not conducive to fault repairs and timely elimination of potential safety hazards ; This storage method also causes a waste of system storage resources

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