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
-
领克02是换壳沃尔沃还是虚有其表？拆开底盘，事实胜于雄辩
最近几年国产车发展的速度非常快，当一些较大的国产车企销量上取得了成功之后，就开始走起了高端路线。比如说吉利就推出了自主品牌领克，领克旗下的车型颜值高，在品质上也更好，领克02是换壳…
-
紧凑级家用车的标杆，为什么很多人都推荐大众朗逸？_上海大众朗逸,大众汽车,大众帕萨特,原汁原味的德系SUV,黄金
“ 全新一代朗逸是采用大众最新的MQB平台打造，其长宽高和轴距均有所增加。大众果真是把中国消费者琢磨得透透的，而朗逸就是专为中国市场量身打造的车型。由于长期保持居高不下…
-
小号全新翼虎，福特全新小型跨界SUV PUMA渲染图曝光
4月2日，福特正式发布了旗下全新小型跨界SUV PUMA，新车采用嘉年华平台打造，与福特翼搏同堂销售以应对小型SUV细分市场。 本次的渲染图根据发布当天的官方曝光和近期的测试谍照绘…
-
电动为豪华赋予更多内涵 奔驰EQC要PK新老对手胜算几何？
就像合资品牌纷纷推出纯电动汽车，给那些不是非常看重续航里程，但更关注整车品质和驾驶感受的用户提供了新的选择一样，奔驰EQC上市给那些看重传统豪华品牌价值的新能源汽车客户提供了新选择…
-
不到50万就能买到的特斯拉？你并没有看错！
作为一名内燃机车型的拥护者，今天我却要给大家带来一款前两天刚刚开放中国地区选装的电动车型——特斯拉MODEL 3。 指导价： 长续航全轮驱动版—49.90万元 Performanc…
-
马斯克兴奋尬舞，带来减配降价的国产特斯拉
作者丨王瑞 编辑丨郝秋慧 特斯拉CEO埃隆马斯克今晨乘私人飞机从洛杉矶抵达上海，下午的交付仪式俨然一场马斯克的粉丝见面会，现场尖叫声不断，心情大好的马斯克问工作人员要了段音乐，在舞…
-
凯美瑞1月销量增长70%广汽丰田表现强劲
2019年1月广汽丰田全年销量达到79,700辆，同比激增75%，创下历史新高。 今年1月份，广汽丰田新车销量为7.97万辆，同比增长75%。其中，凯美瑞1月销量为1.97万辆，同…
-
车子被刮了怎么办？别慌！86教你3招轻松解决_人生第一份工作,头号大赢家| 理财大赛第二季
对于有车一族来说，找车位其实是件很麻烦的事情，但是比找车位更麻烦的是保护停好的车子。但是，天有不测风云，如果车子被刮花了，该采取什么样的措施呢？ 如果是在停车场 随着大街小巷的车辆…
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.