车载ECU故障诊断与修复技术优化策略

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中图分类号：U463.6 文献标识码：B 文章编号：1003-8639（2025）10-0159-03

【Abstract】Thisarticle conducts asystematic studyonthe fault diagnosis and repair technologyof vehicle-mounted microelectronic control units，and focuses on the practical operation needs of automotive repair personnel to construct a standardized technical system.First，startfrom the standardizedoperationprocess ofhardware detection tools，and clarify the parameter measurementstandards fordevices such as multimetersandosciloscopes; Then，deeplyanalyze the encoding rulesof the second-generation faultcodesof thevehicle-mounted diagnostic systemandtheanalysismethodsof data flowfluctuation characteristics; Basedon this，innovative hierarchical repair paths fortypical faultssuch as powersuply systems and communication networksare designed.An intelligent repair technology iteration plan including theapplication of dedicated programming equipmentanddata backup strategies is proposed.Combined withthe classifiedarchiving and empirical analysisofthe maintenancecase library，through multi-dimensional technicaloptimization，the maintenance effciency and success rate of ECU can be effectively improved，and the rework rate can be reduced.

【Key words】ECU fault diagnosis;optimization of repair technology；hardware detection tool

1 ECU故障诊断基础技术

1.1 硬件检测工具与操作规范

ECU硬件检测需依赖专业工具。（剩余4963字）