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
-
玻璃水雨刷精超浓缩汽车用雨刮精防冻泡腾片雨刮水液夏季四季通用
推荐理由 快速清洁玻璃上的油膜，虫胶，树粘等污垢，使视清晰，不易沾灰，有效保护雨刮片，延长雨刮使用寿命，雨再大也不怕！【赠运费险】 此款商品正在进行限时活动，原来天猫售价9.8元，…
-
刚刚发布！取消高速公路主线收费站最新时间表_河北,交通,Android,京津冀,苹果公司,银行
7月4日，从河北省政府新闻办召开的河北省推进取消高速公路主线收费站工作新闻发布会上获悉， 2019年底，河北省将取消全省44个高速公路省界主线收费站、2个省内主线站，实施高速公路入…
-
本田F1续约红牛和小红牛车队 红牛认为是“莫大慰藉”_红牛车队,F1赛车,红牛,本田技研工业,赛车,迈凯伦F1,马克斯·维斯塔潘,体育,捍卫我的中国赛主场,英国
“ 本田F1宣布与红牛和小红牛F1车队续约一年，至少将在2021赛季末之前为两支车队提供引擎。 本田F1多次表示，只有大幅削减F1引擎研发成本才有长期留在F1的可能。在…
-
除了送的保养，以后保养可以不去4S店吗？
都说买车不是一锤子买卖，在买到车之后，意味着全新生活的开篇。作为一个车主考虑的比买车之前还要多，口袋里的钱可不一定都是你自己的，除了油费和车贷之外，还有维修保养的费用不能忽略。而这…
-
汽车行业“伪金九”，经销商库存高位销量持续下滑
温馨提示：点击上方蓝字关注“汽车行业关注”，或者添加微信公众号：autoWechat，每日收获最新最快最热门的精彩汽车资讯。如果您有好的原创文章或者独家爆料，请发邮箱mail@au…
-
今年该买什么车？大空间+内饰豪华+10万起步
2019年农历新年假期已经结束，随着3月份即将到来，车市也将逐渐回暖，各大品牌厂商将陆续推出旗下的多款新产品，力争在今年第一季度为冲击年销量目标打下良好的基础。网上车市提前为大家梳…
-
北京BJ40，越野性能让人羡慕！
相信很多喜欢越野的朋友都希望有一台属于自己的越野车，奈何越野车大的价格放在哪，让我们不得不放弃越野车，而去购买一台类似于越野车的城市SUV，想必许多朋友看到标题之后就会知道小编今天…
-
未署名的情书：酷路泽LC200沿海岸线的8000公里
一年没写东西了，好多车友问我是不是没有灵感，我说不是，而是不想把自己撕碎了给别人看。2018年，经历了许多事情、去过了许多地方、也看透了许多人心，与其说收获了世故的成熟，不如说深刻…
-
关注_银行,人生第一份工作
“ 前几天， 有位车主开车驶入ETC通道时 前面的杆子死活都不抬起 后来经查验 并不是因为ETC的感应设备坏了 而是他的ETC被拉入黑名单了！ ETC黑名单到底是什么？…
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!