Abstract: With the continuous development of the automotive industry, the management and control of fault codes before vehicle dispatch during the production phase have become increasingly stringent. How to meet the production cycle time while achieving precise fault code control is a key focus of diagnostic research. To address the pain point that the existing fault code reading and clearing tools used by the vehicle logistics department of a manufacturing base cannot meet the production cycle requirement of 1 min before vehicle dispatch, this paper carries out the design and implementation of a fault code production management and control tool based on unified diagnostic services (UDS) communication. The solution design is carried out through the tool's interface, the software and hardware solutions of the tool are designed, and controller end-of-line (EOL) verification is conducted through simulation and real-vehicle testing. The research results show that the fault code production management and control tool can achieve the functional verification of clearing and reading vehicle fault codes, reducing the time at the original reading and clearing station from 3 min to within 1 min, thereby meeting the production cycle requirement. The annual costsaving benefit for a single base reaches 1.92 million yuan, providing a reference for research in related fields.

Key words: UDS; fault code; diagnostic instrument; production management and control; EOL; diagnostic tool

摘要： 随着汽车行业的不断发展，生产阶段在出库前故障码的管控也越来越严苛，如何满足 生产节拍，又可以实现故障码的精准管控是诊断研究的重点。为解决基地整车物流部车辆在 发车前现有故障码读清工具无法满足生产节拍 1 min 的时长要求痛点，文章开展了基于统一 诊断服务（UDS）通讯的故障码生产管控工具设计及实现。通过故障码生产管控工具界面进 行方案设计，设计故障码生产管控工具软硬件方案，基于仿真与实车测试进行控制器下线检 测（EOL）验证。研究结果显示，故障码生产管控工具可实现整车的故障码清除和读取功能 验证，将原来读清工位 3 min 缩短至 1 min 内，满足生产节拍要求，单基地每年降本效益达到 192 万，可供相关领域研究参考。

关键词: UDS；故障码；诊断仪；生产管控；EOL；诊断工具