故障现象：比亚迪唐车辆正常行驶中躲避前方障碍物，打方向时突然没有助力，在低速转弯时转向打到一半时突然没有助力，但是没有助力时用力左右转动转向盘就有助力了。
故障分析：电动机接插件松动；系统软件是否有升级项目；电动机故障；供电电路虚接或短路；搭铁不良。
检修过程：
① 首先，举升车辆查看接插件是否松动或脱落，特别是电动机和ECU接插件，经检查接插件正常无故障。
② 然后用VDS1000检查是否有关于电动机的升级更新项目，在扫描后发现电子转向系统有3处故障码：扭矩传感器故障；转角信号故障；电动机过流故障。
③ 分析这三个故障的共同点。从第三个故障看应该是搭铁不良，通过查询电路图发现这三个故障是有交集的，找到电动机搭铁点发现螺丝处有电烤漆引起搭铁不良，打磨处理装车试车，故障依旧。
④ 再次读故障码发现电动机过流故障依然存在，分析为电动机故障，但是再次拆卸检查搭铁点（下图），发现在搭铁点焊接点上有突起点，再看看线卡上的附着面上只有一个点，就是搭铁不良。
⑤ 再次打磨搭铁点，把凸点打磨平，再次装车试车，故障消失。
点评：按照维修手册指导处理搭铁点故障，需同时更换R-EPS搭铁螺母。
原创文章，作者：cesifu，如若转载，请注明出处：http://www.cesifu.com/article/36744.html
微信扫一扫 
支付宝扫一扫 相关推荐
-
北京现代朗动无法启动！查了到怀疑人生了_现代朗动,北京现代汽车,平板电脑
车辆信息： ２０１５款朗动，搭载１．６Ｌ双ＣＶＶＴ伽马发动机和Ａ６ＧＦ1型六速手自一体自动变速器，配备智能钥匙一键启动系统，行驶里程８０００多公里． 故障现象： 用户来电反映车子之…
-
震鲸！吉利起诉威马侵害商业机密，索赔21亿！
震鲸！国内汽车知识产权索赔最大案 一切皆是缘，不是冤家不聚首。 据悉，2018年，浙江吉利控股集团、吉利汽车研究院以侵害商业秘密的名义向最高人民法院提起诉讼，控诉威马汽车及旗下共计…
-
最美长安SUV来袭，内饰比肩奔驰，还看啥哈弗H6
国产自主品牌里长安、长城、吉利、奇瑞这些都是很有名气的车企，而且这些车型大部分布局都是在SUV领域。在SUV领域它们的表现也是有压过合资车的势头，最近长安这个车企也是推出了一款全新…
-
新王登基 图解2020款BMW 7系
1月16日，BMW携全新7系首次亮相国内并且全球首发，再次证明了中国市场对于7系的重要性。虽然有BMW X7的玉珠在前，但这次全新7系的中期改款还是惊艳了国内外车迷，夸张的全新造型…
-
1月销售1803辆蔚来ES8销量放缓
经历了去年下半年的产能爬坡和集中交付之后，进入2019年，蔚来ES8的销量开始放缓。据EV世纪了解，蔚来ES8今年1月份销量为1803辆，显著低于去年最后两个月的3000多辆。 交…
-
广汽三菱1月销量超1.2万辆今年销量目标增长20%
根据广汽三菱官方消息，公司去年全年销量量突破了14万辆，今年的销量目标是增长20%。据官方数据显示，广汽三菱在1月的销量为12,818辆，同比下降了18.2%。其中销量成绩最好的车…
-
奥迪A4L这个缺点纠结了一年还是受不了了，改了。
很多人买车的时候现在网上做点功课，对比选车直到去店里试驾，最后提车，买完车之后就去关注这款车的各项指标和功能是否很同款车友的有所不同。 奥迪A4L三十多万的车，各项配置其实还是挺好…
-
本田的地球梦之殇——工程师解读雅阁失速真相_本田雅阁,本田技研工业,本田CR-V,本田思域,工程师,地球,本田UR-V,技术,跳槽那些事儿
“ 近日，第十代本田雅阁1.5T车型在高速上突然失速的案例在各大网站被频频曝出，很多雅阁车主都在高速上经历了惊魂一刻。 我们帮你们找到了答案，应该是全网最快吧。 作为近…
评论列表（36条）
The post added a new layer to my understanding of the subject. Thanks for sharing The knowledge.
You navigate through topics with such grace, it’s like watching a dance. Care to teach me a few steps?
The post was a beacon of knowledge. Thank you for illuminating this subject.
Always learning something new here, because apparently, I didn’t pay enough attention in school.
Shedding light on this subject like you’re the only star in my night sky. The brilliance is refreshing.
This was a great read—thought-provoking and informative. Thank you!
Each post is a journey, and The words are the map. Thanks for leading the way.
Each post is a journey, and The words are the map. Thanks for leading the way.
This was a thoroughly insightful read. Thank you for sharing The expertise!
Adding value to the conversation in a way that’s as engaging as a flirtatious wink. Can’t wait to hear more.
Reading The Writing is like finding an oasis in a desert of information. Refreshing and revitalizing.
The expertise and hard work shine through, making me admire you more with each word.
What a compelling read! The arguments were well-presented and convincing.
The depth of The research really stands out. It’s clear you’ve put a lot of thought into this.
Breaking down this topic so clearly was no small feat. Thanks for making it accessible.
The creativity shines through, making me wonder what else you could do with such a vivid imagination.
The knack for making hard to understand concepts readable is something I greatly admire.
What a magnificent post! Your ability to distill complex concepts into understandable and engaging content is exceptional. I admire your commitment to providing value to your readers. Your blog is a treasure trove of knowledge. Thank you for your hard work.
I’m impressed by The ability to convey such nuanced ideas with clarity.
I look forward to The posts because they always offer something valuable. Another great read!
Learned a lot from this post, and here I was thinking I knew it all. Thanks for the humble pie.
I’m so grateful for the information you’ve shared. It’s been incredibly enlightening!
You have a gift for explaining things in an understandable way. Thank you!
Your post resonated with me on many levels. Thank you for writing it!
Your blog is a go-to resource for me. Thanks for all the hard work!
The Writing is like a favorite coffee shop where the drinks are always warm and the atmosphere is inviting.
The post was a beacon of knowledge. Thanks for casting light on this subject for me.
This article was a joy to enjoy reading. Your enthusiasm is contagious!
Your work is truly inspirational. I appreciate the depth you bring to your topics.
Your work is truly inspirational. I appreciate the depth you bring to your topics.
Thank you for shedding light on this subject. Your perspective is refreshing!
This post is a testament to your expertise and hard work. Thank you!
Thank you for shedding light on this subject. Your perspective is refreshing!
You’ve articulated your points with such finesse. Truly a pleasure to enjoy reading.
Your blog is a constant source of inspiration and knowledge. Thank you!
Thank you for shedding light on this subject. Your perspective is refreshing!