图文原创 作者| 大神修卡车
车型配置
解放JH6.锡柴国四.EDC17-E4〈EDC17CV44〉博世6.5尿素泵
故障现象
亮后处理故障灯，不烧尿素，司机反应动力影响不明显。
故障码
看下图 故障码照片
故障分析-维修过程
看故障码都是历史故障，报的有氮氧传感器的，测量了下氮氧传感器的正负极供电正常24V又测量了下CAN电压电阻都正常〈CAN H2.6 CAN L2.4 电阻60左右〉 还有一个故障码是 SCR喷射时压力过低，就检查尿素滤芯发现比较脏，更换尿素滤芯。
还有故障就是尿素温度故障和尿素液位故障，这个故障从检测仪数据流中可以看到，于是就点击进去看了下数据流，就发现尿素温度负15℃ 还在那里乱跳；
由于不知道尿素温度影响不影响烧尿素，于是就求助了小轨在线问答师傅，师傅回答说影响烧尿素，厂家一般标定在零下五度只左右，知道影响烧尿素就好办了，就到线路图，测量电压是否正常，测量发现，两个5.7V两个0V ，线路正常，就换了尿素温度液位传感器，在看了下尿素温度，这次正常了和本地的温度差不多，还有一个就是加热故障，我是这么想的温度一直都是负，就算在加热温度还是负的，所有报出来了这个加热故障。
结果
试车一切正常，尿素温度和尿素滤芯 导致不烧尿素 点亮故障灯 ，
案例总结
在维修过程中，了解车辆的控制策略也非常重要。
福利~大福利~特大福利~~
1元领取卡车维修书籍
关注微信公众号 [ 大神修卡车 ]
回复“1元”即可查看领书详情
原创文章，作者：cesifu，如若转载，请注明出处：http://www.cesifu.com/article/33269.html
微信扫一扫 
支付宝扫一扫 相关推荐
-
10万元左右可以买的精致法系SUV：全新标致2008_标致汽车,设计,标致2008,运动型多用途车
“ 其实在标志旗下的车型里面，不乏有一些非常个性的小车，前几年，标致206的发布就带来了很多的争议，很多人都吐槽标志206或者是207造型，实在是有点太过于古怪了，不过…
-
顶配才6.29万，外形年轻动感，奇瑞瑞虎3X_瑞虎3,瑞虎3x,奇瑞汽车,运动型多用途车,宝骏汽车,奥迪,BMW,奔驰,宝骏510
“ 曾经的小型SUV还是“小众车型”，但是近几年随着SUV的日渐火爆，如今的小型SUV纷纷排队上市，曾几何时的蓝海已经杀得血红一片。今天说的这款车就是奇瑞旗下的小型SU…
-
汽车坐垫单片夏季座垫四季通用汽车卡通垫三件套透气防滑冰丝凉垫
推荐理由 蜂窝透气布，清爽透气，硅胶粒不移动，免绑防滑，高强度可机洗，一套在手，四季不愁。【赠运费险】 此款商品正在进行限时活动，原来天猫售价25元，现有5元优惠券，到手仅需20元…
-
逆潮流而动？盘点2018发动机技术创新
[车师傅 发动机技术] 我的同事舒宁在之前写了一篇《2018汽车技术最火关键词》，里面提到第一个关键词就是“三缸发动机”——的确，更加严格的排放法规，低得变态的油耗限值，如今各…
-
车钥匙被锁车内该怎么办？砸玻璃？维修工：别犯傻，方法多了去了
车钥匙被锁车内该怎么办？砸玻璃？维修工：别犯傻，方法多了去了 生活水平的提高，经济收入的增长，买车的人越来越多了，汽车让大家出行也变得更加便捷了。大家也知道，现在的汽车已经不再像以…
-
本田雅阁的亲兄弟，到今天没有中文名字，实际测评相当不错
本田在中国市场纵横了这么多年，推出的雅阁也算的上是B级车领域里面的一根标杆了，他的实力也完全不亚于帕萨特，迈腾等强劲对手，在中国的销量就是个很好的证明，除此之外，本田还有一款实力非…
-
一般人养车只知道换机油，这七处不管让车寿命少三四年，建议看看_汽车保养
随着我国汽车保有量的逐年增加，拥有汽车的人越来越多，汽车保养已成为许多人特别关注的问题。汽车的保养就像人的保养一样车龄越大就越要上心一些车主的汽车保养的好能保持汽车的状态若是不注意…
-
全新速腾领衔，3月上市新车抢先看，还为春节没买车后悔？
由于春节的原因，导致2月份上市的新车并没有刷出该有的存在感。按照过去的新车上市情况来看，春节过后基本每个月都将迎来新车扎堆上市。就拿即将到来的3月份来说，就有不低于10款车型上市，…
评论列表（39条）
Charlotte Dog Park has such a chill atmosphere—I can unwind while my dog has the time of his life.
Charlotte Dog Park is where my dog’s dreams come true—endless space to run and sniff everything.
The community at Charlotte Dog Park is so friendly; I’ve met some great people while my dog plays off-leash.
Charlotte Dog Park is where my dog’s inner athlete comes out—he’s a jumping, running star!
The smells my dog discovers at Charlotte Dog Park keep him entertained for hours—he loves it.
Opened my eyes to new perspectives, and here I was thinking I’d seen it all.
The attention to detail is as attractive as it is thorough. I appreciate a person who notices the little things.
I appreciate the balance and fairness in The writing, like a perfect partner who always keeps things interesting. Great job!
You’ve opened my eyes to new perspectives. Thank you for the enlightenment!
The post was a beacon of knowledge. Thank you for illuminating this subject.
Thank you for making hard to understand topics accessible and engaging.
Thank you for consistently producing such high-high quality content.
Handling topics with grace and authority, like a professor, but without the monotone lectures.
The thoughtful analysis has really made me think, in a way that’s as stimulating as a deep gaze into The eyes.
Packed with insights, or what I call, a buffet for the brain.
Packed with insights, or what I call, a buffet for the brain.
Unique viewpoints, because who needs echo chambers?
Such a well-researched piece! It’s evident how much effort you’ve put in.
The attention to detail didn’t go unnoticed. I really appreciate the thoroughness of The approach.
The ability to convey nuanced ideas with clarity is as alluring as a whispered secret.
The blend of informative and entertaining content is perfect. I enjoyed every word.
The writing is a masterpiece. You managed to cover every aspect with such finesse.
Appreciate the balance and fairness, like a judge, but without the gavel.
The insights added a lot of value, in a way only Google Scholar dreams of. Thanks for the enlightenment.
ChatGPT
This was a great read—thought-provoking and informative. Thank you!
The insights add so much value, like an unexpected compliment that brightens one’s day. Thanks for sharing.
Engaging with The content is like embarking on a treasure hunt, where knowledge is the prize.
Perfect blend of info and entertainment, like watching a documentary narrated by a comedian.
The balance and fairness in The writing make The posts a must-read for me. Great job!
Each post is a journey, and The words are the map. Thanks for leading the way.
Thank you for the hard work you put into this post. It’s much appreciated!
Your attention to detail is remarkable. I appreciate the thoroughness of your post.
The clarity and thoughtfulness of The approach is as appealing as a deep conversation over coffee.
The dedication to high quality content is evident and incredibly appealing. It’s hard not to admire someone who cares so much.
Your work is truly inspirational. I appreciate the depth you bring to your topics.
Your ability to distill complex concepts into enjoy readingable content is admirable.
Your insights have added a lot of value to my understanding. Thanks for sharing.
Your ability to distill complex concepts into enjoy readingable content is admirable.