故障描述
车辆行驶过程中及长下坡时，打开排气制动开关，排气制动阀不工作，不起制动作用。
故障分析
分析可能存在故障的部位有：
1、 排气制动开关损坏；
2、 排气制动电磁阀短路、短路；
3、 排气制动蝶阀卡死；
4、 排气制动管路损坏，漏气；
5、 下车排气制动相关线束；
6、 发动机ECU模块故障。
故障处理1.检查
检查时发现打开排气制动开关，排气制动指示灯亮，说明排气制动控制开关信号进入发动机ECU，开关正常。
2.检查排气制动电磁阀
检查排气制动电磁阀，测量电磁线圈阻值约为24欧姆，电磁阀正常。
3.测电压
测量排气制动电磁阀线束插头内电压，304#对327#无电压，304号线对地为24V，此为正常，排气制动电磁阀由发动机ECU直接提供24V电源，由ECU控制负极通断来实现电磁阀的开启和关闭。
4.判断
测量发动机ECU控制负极的端口K47与排气制动电磁阀插头处327号线不通，判断线路有断路现象（见上图），导致排气制动电磁阀无法吸合、蝶阀不工作。
5.查找
通过查找与车架对接的插件，发现有松动情况，维修该处连接线路后，故障解决。
原创文章，作者：cesifu，如若转载，请注明出处：http://www.cesifu.com/article/42935.html
微信扫一扫 
支付宝扫一扫 相关推荐
-
宝马车主有点苦恼，鼓风机时而工作时而不工作，出风量还不确定！
一般情况下，我们打开汽车空调控制面板的风量开关后，能听到鼓风机运转的声音，调节不同的风速档位时，出风口的风速就不同。若是我们调节鼓风机开关或档位，鼓风机不能正常工作的话，说明鼓风机…
-
李建华：大通G20引领上汽MAXUS突破中高端MPV市场_上汽集团,上汽大通,多功能休旅车,汽车展览,广州国际汽车展览会,李建华,广州,房车,原汁原味的德系SUV,佳宝V80,比亚迪,雷克萨斯汽车
“ 上汽大通汽车销售服务有限公司副总经理李建华（左） 文：懂车帝原创 魏微 [懂车帝原创 2019广州车展]11月22日，第十六届广州国际车展开幕，上汽大通汽车销售服务…
-
400CC级别的两款台湾品牌大型踏板车的全方位解析
我是骠骑府！资深摩托车媒体编辑，点击头像关注更多精彩答题，欢迎关注！ 光阳赛艇400与三阳MAXSYM400i都是来自于宝岛台湾的两款大排量踏板车，所不同的是光阳赛艇400由光阳设…
-
女性撑起半边天的时代来啦，这款欧拉R1女神版你值得拥有！
根据最新的女性消费调查显示，女性消费自我意识已经觉醒，消费时更自主、更悦己。而将这样的原则移植到汽车市场，我们不难发现，如今在庞大的汽车消费市场上，女性的话语权越来越重。除了买车自…
-
剑指奥迪S3 全新宝马M135i官图发布 9月法兰克福车展首发
近日，有海外媒体发布了一组全新宝马M135i的官图，新车将基于FAAR前驱平台进行打造，搭载2.0T高功率发动机。根据此前消息称，该车将于9月开幕的法兰克福车展首发亮相，该车上市后…
-
改装，就是既要经典，又要自带高科技！
宝马E30 M3作为第一代M3，算得上是一个里程碑，以至于不少人会认为E30就是宝马3系的开端（第一代宝马3系是E21）。在八十年代末期的国外，宝马E30 M3与奔驰W201 19…
-
如今的汽车在冷启动的时候，到底还需不需要原地热车？
关于冷启动要不要热车，绝对是个老生常谈的问题；这么多年来围绕需要热车，不需要热车的博弈从未停止过，那么现在的车子在冷启动到底需不需要原地热车，鄙人下面就根据关于热不热车产生的种种疑…
-
丰田全新SUV，Tj Cruiser。_丰田汽车,运动型多用途车,丰田汉兰达,别克汽车,多功能休旅车,概念车,设计,别克GL8,东京车展
“ 丰田在东京车展上推出了一款SUV概念车，它还在国内将商标注册了，这也向人们表示，丰田在未来会推出一款全新的SUV车型，这款车型名叫丰田-Tj Cruiser。 首先…
-
豪华车都配扁轮胎，难道越扁的轮胎就越好？
汽车轮胎作为汽车唯一和地面接触的部件，除了承载车身和车内成员之外，行驶、转弯都得全靠它，可以说是日常行车检车中最重要的一环。而不同的车胎上，除了纹理不一样之外，还会有一些不一样的数…
评论列表（31条）
Shedding light on this subject like you’re the only star in my night sky. The brilliance is refreshing.
You tackled a hard to understand issue with elegance and insight. I feel much more informed after reading The post.
This comprehensive article had me hanging on every word, much like I would during a late-night chat.
The posts inspire me regularly. The depth you bring to The topics is truly exceptional.
Adding value to the conversation in a way that’s as engaging as a flirtatious wink. Can’t wait to hear more.
Thank you for shedding light on this subject. The perspective is refreshing!
You have a unique perspective that I find incredibly valuable. Thank you for sharing.
The dedication to high quality content is evident. Keep up the great work!
The passion for this subject is infectious. Reading The post has inspired me to learn more.
I appreciate the unique viewpoints you bring to The writing. Very insightful!
The dedication to high quality content shows. It’s like you actually care or something.
The depth of The research really stands out. It’s clear you’ve put a lot of thought into this.
The article was a delightful read, and The passion shines as brightly as The intellect. Quite the combination!
The writing style is captivating. Finally, something that can keep my attention longer than a TikTok video.
This post is nothing short of brilliant! Your unique perspective and insightful analysis have left me thoroughly impressed. It’s rare to find content that is both enlightening and enjoyable to read. You’ve outdone yourself with this one. My sincere thanks for sharing.
Delightful read. The passion is visible, or at least, very well faked.
Every article you write is like a new adventure. I’m always excited to see where you’ll take me next.
The Writing is like a favorite coffee shop where the drinks are always warm and the atmosphere is inviting.
This post was a breath of fresh air. Thank you for The unique insights!
The article was a delightful read. It’s clear you’re passionate about what you do, and it shows.
Your blog is a go-to resource for me. Thanks for all the hard work!
You have a unique perspective that I find incredibly valuable. Thank you for sharing.
You’ve done a fantastic job of breaking down this topic. Thanks for the clarity!
Compelling read with well-presented arguments. I almost felt persuaded. Almost.
This comprehensive article had me hanging on every word, much like I would during a late-night chat.
I appreciate the unique viewpoints you bring to your writing. Very insightful!
Thank you for the hard work you put into this post. It’s much appreciated!
Your creativity and intelligence shine through this post. Amazing job!
Your piece was both informative and thought-provoking. Thanks for the great work!
I’m amazed by the depth and b enjoy readingth of your knowledge. Thanks for sharing!
Such a well-researched piece! It’s evident how much effort you’ve put in.