Lesson-Learned-Lesson-Learned-TemplateTemplateLessons Learned for XXX发动机延时熄火或无法熄火。发动机延时熄火或无法熄火。Engine stop delay or can not stop after IGN off.案例描述案例描述 Issue Description:Lessons Learned for XXX为解决发动机熄火瞬间仪表指示灯暗亮问题，线束在为解决发动机熄火瞬间仪表指示灯暗亮问题，线束在S3阶段增加二极管，此举加剧了发电阶段增加二极管，此举加剧了发电机对机对ECM的干扰。的干扰。To resolve cluster indicators flash problem, we add one diode on wiring harness, this action resulted in Generator effecting ECM more seriously.发动机熄火瞬间，单功能调节器在F端继续输出电流，电流沿着黄色路径流经仪表，导致其闪亮为解决闪亮问题，线束在图示红色位置增加二极管，电流沿着蓝色路径流动，不会影响仪表但加剧了对ECM的影响导致ECM C3端口电压升高，ECM误判断钥匙仍在点火位置After IGN off, there still current out put from F terminal of generator with mono-function regulator. The current flow along yellow path shown in right picture. This results in indicators flash.To resolve above problem, we add one diode in wiring harness. the diode stop current flow into cluster but cause all current flow into ECM, so the voltage of ECM C3 terminal becomes higher than before, ECM still “think” ignition key still at “IGN on” stage.此处电压高于6.3伏，ECM认为钥匙处在点火状态, 根本原因分析根本原因分析 Root Cause Analysis ：Lessons Learned for XXX对应措施和验证对应措施和验证 Action & Validation：1，短期措施：，短期措施： Short-term solution: 申请申请PAA，将熄火瞬间产生电流的发电机更换为多功能调节器发电机（多功能调节器的发电机熄火后，将熄火瞬间产生电流的发电机更换为多功能调节器发电机（多功能调节器的发电机熄火后不会产生电流），这样仪表灯闪亮的问题也可以解决。不会产生电流），这样仪表灯闪亮的问题也可以解决。 Apply PAA to rework problem vehicles and apply to use generator with multi-function regulator( New generator wont out put current after key off ). 申请申请PAA将增加的二极管删除将增加的二极管删除 Apply PAA to delete the diode on wiring harness PAA: 196622，长期措施：，长期措施： Long-term solution: 申请申请EWO将熄火瞬间产生电流的发电机更换为多功能调节器的发电机（多功能调节器的发电机熄火后将熄火瞬间产生电流的发电机更换为多功能调节器的发电机（多功能调节器的发电机熄火后不会产生电流），这样仪表灯闪亮的问题也可以解决。不会产生电流），这样仪表灯闪亮的问题也可以解决。 Apply EWO to rework problem vehicles and apply to use generator with multi-function regulator( New generator wont out put current after key off ). 将增加的二极管删除将增加的二极管删除 Delete redundant diode. EWO:19520措施断点：措施断点：2008-4-212008-4-21BP: 2008-4-21BP: 2008-4-21Lessons Learned for XXX经验教训经验教训/ /举一反三措施举一反三措施 Lessons learned and Actions Plan Lessons learned and Actions Plan：有流程，没有严格执行。有流程，没有严格执行。There is procedure, but didnt carry out strictly. 没有流程，或流程不明确。没有流程，或流程不明确。No procedure, or not very clearly stipulated.其它其它 Other说明： 1, 如果有流程，但没有严格执行，要从加强执行力方面汲取该经验教训，制定具体措施，确保流程能严格执行。要有负责部门/人员和完成日期。 2, 如果没有流程，或流程不明确，要制定新的流程或修改流程，要有负责部门/人员和完成日期。 3, 流程包括，但不仅限于TIR, EWO, ETR, DFMEA, 工程认可流程, SOR, PPAP, PQRR, PDI, PFMEA, 雨淋试验流程, CVIS, PTR, SOS, JIS, 等。Note: 1, If there is a procedure, but not strictly implemented, we need to get lessons learned from how to enhance the implementation, and have action plan, to ensure the procedure can be strictly carried out. There must be the Owner/person and complete date. 2, If there is no procedure, or the procedure is not very clearly stipulated, then we must develop or update the procedure, with Owner/person and complete date. 3, The procedures includes, but not only: TIR, EWO, ETR, DFMEA, Engineering Approval Procedure, SOR, PPAP, PQRR, PDI, PFMEA, Water Test Procedure, CVIS, PTR, SOS, JIS, etc.Lessons Learned for XXX有流程，没有严格执行。有流程，没有严格执行。There is procedure, but didnt carry out strictly. 没有流程，或流程不明确。没有流程，或流程不明确。No procedure, or not very clearly stipulated.1，设计经验不足：，设计经验不足： 改型过程中忽视了单功能调节器发电机改型过程中忽视了单功能调节器发电机F端的电器性能以及其对整车的影响导致仪表灯端的电器性能以及其对整车的影响导致仪表灯闪亮问题闪亮问题 Design experience lack: During engineering change, we ignored the characteristic of generator with mono-function regulator.措施措施: 将此将此lessons learned 转化为转化为Best practice, 作为项目开发工程设计的输入。作为项目开发工程设计的输入。在新项目及在新项目及年度改型中整车构架工程师会将发电机对整车电器影响作为工程检查的一部分。年度改型中整车构架工程师会将发电机对整车电器影响作为工程检查的一部分。负责部门负责部门: Elec./杜祖楠；杜祖楠；完成日期完成日期: 6/25Action： Convert this lessons learned to a Best practice, this BP will act as an engineering design guideline for future program. We add this lessons learned to engineering check list, so that architecture engineer will check generator effect during engineer change.Owner: Elec. Mr. Du Zunan; Complete Date: 6/25 其它其它 OtherX经验教训经验教训/ /举一反三措施举一反三措施 Lessons learned and Actions Plan Lessons learned and Actions Plan：Lessons Learned for XXX有流程，没有严格执行。有流程，没有严格执行。There is procedure, but didnt carry out strictly. X没有流程，或流程不明确。没有流程，或流程不明确。No procedure, or not very clearly stipulated.其它其它 Other 2，工程验证必须完全符合设计要求：，工程验证必须完全符合设计要求：工程工程ETR时，为线束更改方便，二极管安装位置与实际更改的位置不同。时，为线束更改方便，二极管安装位置与实际更改的位置不同。 这这掩盖了发动机无法熄火的问题掩盖了发动机无法熄火的问题(见下页图片见下页图片)Validation must meet the requirement of design: For ETR, we added the diode at a different position which is different from production, Thats the reason why we havent found this problem during ETR.（see next page picture）措施措施:强调强调ETR的准确性，必须严格按照更改的实际状态进行试验，的准确性，必须严格按照更改的实际状态进行试验，增加经理检查增加经理检查制度。制度。负责部门负责部门: Elec./XXX；完成日期完成日期: 6/25Action：ETR should be done exactly according to production status, adding manager check process. Owner: Elec. Mr. XXX; Complete Date: 6/25经验教训经验教训/ /举一反三措施举一反三措施 Lessons learned and Actions Plan Lessons learned and Actions Plan：Lessons Learned for XXX有流程，没有严格执行。有流程，没有严格执行。There is procedure, but didnt carry out strictly. X没有流程，或流程不明确。没有流程，或流程不明确。No procedure, or not very clearly stipulated. 3, SDM开发周期缩短开发周期缩短 Shorten SDM calibration duration: 由于开发周期缩短，需要更新开发计划，在此过程中没有充分考虑由于开发周期缩短，需要更新开发计划，在此过程中没有充分考虑SDM标定失败的可能性，标定失败的可能性，在更新的开发计划中缩短了标定周期，没有预留出由于标定失败造成重新标定的时间。在更新的开发计划中缩短了标定周期，没有预留出由于标定失败造成重新标定的时间。 For meeting compressed vehicle development duration, we shorten the SDM calibration timing not include the SDM re-calibration based on our wrong evaluation about the SDM calibration fail possibility.措施措施:严格按照严格按照GVDP的开发过程，制定并执行标定计划。的开发过程，制定并执行标定计划。修订修订Mast Timing审批流程，审批流程，凡要压缩计划的，要报凡要压缩计划的，要报EQMC批准。批准。负责部门负责部门: EQD/张振宇张振宇；完成日期完成日期: 6/25Action： According to the related requirement in GVDP, define and Implement SDM calibration plan strictly. Update Mast Timing approval procedure, if the timing is squeezed, need to get approval from EQMC.Owner: EQD/Mr. Zhang Zhenyu; Complete Date: 6/25 其它其它 Other经验教训经验教训/ /举一反三措施举一反三措施 Lessons learned and Actions Plan Lessons learned and Actions Plan：Lessons Learned for XXX有流程，没有严格执行。有流程，没有严格执行。There is procedure, but didnt carry out strictly. 没有流程，或流程不明确。没有流程，或流程不明确。No procedure, or not very clearly stipulated.4, 没有足够的知识和经验没有足够的知识和经验 Without enough knowledge and experience: 对对SDM标定的技术细节标定的技术细节(这些技术细节是这些技术细节是SDM供应商的技术核心供应商的技术核心) 缺乏了解。缺乏了解。 Lacking experience and knowledge for SDM calibration technical issues (these are suppliers know how).措施措施 Action:开展与开展与SDM供应商间的技术交流。供应商间的技术交流。(目前已经和博世目前已经和博世, 德尔福德尔福, 大陆进行了一轮技大陆进行了一轮技术交流术交流)。Organize the workshop with SDM supplier for studying the issue in calibration process . (finished workshops with BOSCH, Delphi, Continental) 负责部门负责部门 Owner: Elec/沈海东沈海东Mr. Shen Haidong；完成日期完成日期Complete Date: 6/25措施措施 Action：与与GMNA/GME联系，进行有关联系，进行有关SDM标定计算机辅助分析的培训。标定计算机辅助分析的培训。在项目的早期在项目的早期对对SDM标定的风险进行评估。标定的风险进行评估。Running SDM calibration CAE training in GMNA/GME, do risk evaluation ASAP.负负负责部门负责部门 Owner: Elec/沈海东沈海东Mr. Zhang Zhenyu；完成日期完成日期Complete Date: 6/25其它其它 OtherX经验教训经验教训/ /举一反三措施举一反三措施 Lessons learned and Actions Plan Lessons learned and Actions Plan：Lessons Learned for XXX有流程，没有严格执行。有流程，没有严格执行。There is procedure, but didnt carry out strictly. 没有流程，或流程不明确。没有流程，或流程不明确。No procedure, or not very clearly stipulated.X5, 对标定过程控制不足。对标定过程控制不足。Without enough process control for SDM calibration.标定过程由供应商独立操作，不能及时了解标定中存在的问题和困难。标定过程由供应商独立操作，不能及时了解标定中存在的问题和困难。The calibration works be done by supplier independent, we do not know the existent issues and difficulties.措施措施: 将具体的过程控制流程加入将具体的过程控制流程加入SOR模板，模板，要求供应商在标定过程中定期反馈标定状要求供应商在标定过程中定期反馈标定状态。态。负责部门负责部门: Elec/沈海东沈海东；完成日期完成日期: 6/25Action：Add the detail process control in SOR Template, ask supplier delivery calibration status report timely.Owner: Elec/Mr. Shen Haidong; Complete Date: 6/25其它其它 Other经验教训经验教训/ /举一反三措施举一反三措施 Lessons learned and Actions Plan Lessons learned and Actions Plan：结束结束