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Automobile electronic control unit diagnostic function test method and system

A technology of electronic control unit and control unit, which is applied in the field of automobiles, can solve problems such as long time consumption, achieve the effect of reducing working hours and improving platform utilization

Active Publication Date: 2013-12-11
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It takes a long time to test manually, and it will cause a certain error rate due to human factors. Therefore, it is necessary to develop a diagnostic function test system for automotive electronic control units.

Method used

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  • Automobile electronic control unit diagnostic function test method and system
  • Automobile electronic control unit diagnostic function test method and system
  • Automobile electronic control unit diagnostic function test method and system

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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] The present invention provides a diagnostic function test system of an automobile electronic control unit. When testing an automobile electronic control unit, it can be connected through a CAN bus, so that the test system can be used to simulate or eliminate various types of faults, and then to test the automobile electronic control unit. The electronic control unit is tested.

[0036] As a preferred embodiment of the present invention, such as figure 1 As shown, the automotive electronic control unit diagnostic function test system includes:

[0037] Fault type selection module 1, so that the user can select the fault type to be tested; such as figure 2 As shown in , the type of failure may be, but not limited to, EMS (Engine Management System, engine management system) communication loss failure, ABS (anti-block system, anti-lock ...

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Abstract

The invention discloses an automobile electronic control unit diagnostic function test method and a corresponding system. The method comprises the steps of sending fault request data representing bus fault generation to an electronic control unit, enabling the electronic control unit to generate corresponding communication fault codes after receiving the fault request data, reading the communication fault codes, verifying whether the communication fault codes are right according to the fault request data and the automobile electronic control unit diagnostic standard, sending fault clearing request data representing clearing of faults to the electronic control unit, enabling the electronic control unit to clear the communication fault codes after receiving the fault clearing request data, and verifying whether the communication fault codes exist in the electronic control unit.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a method and system for testing diagnostic functions of an automobile electronic control unit. Background technique [0002] Automotive electronic control units (Electronic Control Unit, referred to as ECU) generally have fault self-diagnosis and protection functions. When the system fails, it can also automatically record the fault code in RAM and take protective measures to read it from the above-mentioned inherent program. Alternate programs to keep the engine running; at the same time, these fault information will be displayed on the instrument panel and remain constant, allowing the owner to find the problem in time and drive the car to the repair shop. [0003] Before leaving the factory, the diagnostic function of the automotive electronic control unit needs to be tested. The test includes many aspects, such as diagnostic command format test, communication fault code test, read ...

Claims

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Application Information

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IPC IPC(8): G05B23/02
Inventor 应伟康葛丽敏王旺熊想涛陈文强韦兴民冯擎峰
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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