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
-
干货| 汽车空调养护技巧，99%的人都不知道！
随着冬季的到来，开空调的频率越来越高。很多车主觉得，冬天不用制冷系统，根本不需要保养？really？？？答案是↓↓↓冬天，汽车空调是需要保养的，那么，秋冬季节，该如何保养汽车空调呢…
-
【好车推荐】售价30多万的东风C型房车，6座6卧带纵向子母床，你确定不打开看看吗？
东风C型房车 Hello大家好，最近有网友留言问关于东风底盘改装的C型房车，中国房车网这期就更新一款东风C型房车，我们今天介绍的这款车，是中欧房车打造的一款C型房车。 这款为小额头…
-
高速上车胎爆了停车换胎违规吗?交警教你这么做不用担心被扣分
经常跑高速的朋友可能都会碰到车子突然爆胎的情况，可是就算自己有备胎也不敢轻举妄动啊，因为车主们都知道在高速上随便停车那可是违规的，可是车胎爆了之后也不能置之不理继续跑啊，说不定就会…
-
这家车企即将逆袭？2019年将连推8款新车，国产“宝马X4”换2.0T
2018年随着ix5的上市，东风风光正式跨入产品3.0智能化时代，其产品力大幅提升，受到越来越多消费者的青睐。东风小康汽车有限公司副总经理、销售公司总经理张正源向网上车市表示，东风…
-
2019年度10万级家轿横评，谁才是最佳选择？
提到买家轿，很多人最头疼的就是选择太多无从下手，尤其在十万级家轿这片竞争的红海中，众多车型争相斗艳，热销的车型中不仅有大众朗逸、速腾、日产轩逸、别克英朗等合资车，还有以吉利帝豪GL…
-
安全驾驶三铁律，你知道吗？
现在买车的人越来越多，交通事故也变得越来越频发了，很多事故都是由于驾驶员的一些不良习惯导致，今天我们就来说说开车时最忌讳的三件事情，每一件都有可能危及你的安全。 1.单手握方向盘，…
-
不只是一辆车 年轻“范西客”们的大玩具——沃尔沃全新XC40
浙江在线5月8日讯(浙江在线记者 张鑫)在刚刚闭幕的上海车展上，源自瑞典的北欧豪华品牌沃尔沃汽车，携旗下都市豪华纯正SUV全新XC40亮相2019上海国际车展。作为沃尔沃汽车品牌体…
-
买纯电动车，是传统厂商，还是造车新势力？
纯电动汽车已经越来越流行了，与传统汽车不同的是，消费者在选纯电动汽车的时候，可以有两种选择，一种是传统厂商的纯电动汽车，一种是造车新势力生产的纯电动汽车。 其实特斯拉就是造车新势力…
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.