Method and detector for identifying automobile electric control module

Abstract

The invention discloses a method and a detector for identifying an automobile electronic control module. The method comprises the following steps: establishing a corresponding relationship among an automobile brand, an automobile model, a query instruction baud rate, a module query sending address, a module query instruction and a version number query instruction; establishing a corresponding relationship among the response address of the electric control module, the electric control module and the version number query sending address; establishing a corresponding relationship between the received data after the version number query instruction is sent and the version number of the electric control module; based on identifying and detecting the brand and the model of the vehicle, connecting the vehicle-mounted OBD to the automobile diagnosis instrument, enabling the automobile diagnosis instrument to send a specific inquiry instruction on a communication bus according to the specific communication baud rate of the automobile diagnosis instrument, determining which electronic control modules are configured on a current vehicle according to the ECU response address, and identifying the software version corresponding to the electronic control modules. The invention has the advantages that which electronic control modules and corresponding software versions are configured for the vehicle can be quickly identified, the accuracy is high, and the diagnosis and maintenance efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of vehicle inspection and maintenance, in particular to a method for identifying an automobile electronic control module and a detector for identifying an automobile electronic control module. Background technique [0002] In recent years, with the application of electronic technology, computer technology and information technology, automotive electronic control technology has developed rapidly, especially in the aspects of control accuracy, control range, intelligence and networking. Automobile electronic control technology has become an important symbol to measure the development level of modern automobiles. [0003] Automotive electronic control systems consist of sensors, electronic controllers, drivers, and control program software, etc., and work with the mechanical systems on the vehicle (often fused with subsystems in the powertrain, chassis, and body systems) and utilize cables or radios Waves tran...

AI Technical Summary

Problems solved by technology

[0005] The current routine operation is to determine which electronic control modules are configured on the vehicle through the 250K bit / s broadcast frame address on the CAN line. The derived vehicle diagnostic functions include vehicle module identification, CAN node scanning, etc., but not all vehicles The electronic control module of the vehicle can be determined by conventional methods. For example, for cars such as Carter and Volvo that do not necessarily communicate with the module through the CAN bus, the conventional identification method shows limitations.

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