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
-
重庆市政协委员：电池回收处理亟待落地
[车师傅 行业] 在国内新能源汽车及配套电池快速发展的同时，电池的回收处理问题也日益凸显。近日在2019重庆两会期间，重庆市政协委员、重庆邮电大学先进制造工程学院副院长郑太雄提…
-
2018年全球十大车企排行榜，丰田年销过千万辆，第10名是铃木。#我要上头条# #汽车# @钢弹说车
2018年全球十大车企排行榜，丰田年销过千万辆，第10名是铃木。#我要上头条# #汽车# @钢弹说车richContent: 2018年全球十大车企排行榜，丰田年销过千万辆，第10…
-
新款AMG E 63 S 4MATIC+正式上市！
点击箭头处“蓝色字”，关注我们哦！！ 在近日开幕的2019长春车展上，新款梅赛德斯-AMG E 63 S 4MATIC+车型正式上市，其售价为156.08万元。这款车传承了梅赛德斯…
-
给实习期司机的六点建议
1.不贴实习标志 很多新手没有把贴实习标志当回事，自我感觉良好。其实在实习期间开车未悬挂实习标志或将处以20-200点罚款。 2.不要独自上高速 实习期并非不能上高速，而是不能…
-
除非家里有矿，不然车上这些东西没必要换原厂的
前些天，我朋友开着自己的福特蒙迪欧去保养，车子开了三年多，这次保养除了换机油三滤还换了刹车片、雨刷、蓄电池等部件，一共下来花了4000多，我一看消费明细单，换的全是原厂件，我指了指…
-
编开编聊 | 试驾全新途岳/帕萨特：一个会玩、一个沉稳
在刚过去的72小时，我分别体验了全新一代的上汽大众途岳和帕萨特。理论上来说，两款完全不同属性的车型并不应该被放到一起来说，但是当我试驾完之后，我发现这两款车有着不少的共同之处，同时…
-
你能接受1.5T的奔驰E级么？
目前奔驰旗下换用全新动力的车型有奔驰C级、CLS级、S级等。小编今日从北京奔驰官方获悉，新款奔驰E级正式上市，售价区间为43.58-62.98万元，新车延续全新命名方式更命为E 2…
-
5G时代会给我们——这些普通人带来哪些挑战与机会？
无人汽车行业 1.最近几年各大汽车公司都在进行无人汽车的研发，而5G时代的到来会加速无人汽车的到来。因为5G的高传送性和没有延迟，可以实时传送各种数据与高清图像，而无人汽车最需要这…
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.