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
-
脚踢朗逸，手锤卡罗拉，为什么这款车在国内这么火
日产轩逸到底有多火，看看销量就知道，2018年全年销量47.57万台，非常恐怖的销量数据，基本每月平均销量4万台，每月稳居轿车销量榜前三，那轩逸到底为什么卖的这么好，最顶配是201…
-
用车 | 车价和凯美瑞差不多 亚洲龙养起来贵吗？ | Y车评
Y车评 yautoshow ｜把事实带走 将观点留下｜ 自上市之初，亚洲龙凭借着与雷克萨斯ES同平台的身份、不错的售价获得了颇高的关注度，尤其是作为主推车型的双擎版车型。同时，丰田…
-
高速公路上，遇到积水是躲还是开过去？知道的都是高手
出门在外，开车其实是一个很有风险的工作。什么风险呢，首先是天气状况，再就是驾驶经验和技术的成熟与否，还有就是你应急的能力怎么样，最后就是你的车的性能怎么样？那么，怎么样的司机才算是…
-
交警提醒：这几种车查的“最多”，见一辆拦一辆，车主要注意了
现如今汽车在我们生活当中是越来越常见，当然也是给我们的交通带来了很大的压力，所以说很多人就会发现这个交警会长时间的，在一些路口执勤，那么对于这些交警来说，他们在长沙的时候也并不是每…
-
货车司机谈“雪”色变！有人曾冻掉半条命，这么可怕吗？_货车,空调
“ 临近12月，气温直降，很多地区陆续迎来今年冬天的第一场雪。经常在游走在北方的司机对雨雪天气都心存忌惮，南方来的司机更是要雨雪提高小心。 今天小秘书给大家讲一下，下雪…
-
2015 年凯迪拉克ATS中央显示屏黑屏
故障现象：一辆2015年凯迪拉克正常行驶中，ICS黑屏无法正常工作。 故障诊断：接车后开始维修，首先使用通用诊断仪GDS进行检测，测得以下故障码： ◆◆B2470 04 移动电话天…
-
17万公里的起亚狮跑发动机噪音大，看到放出的机油后车主沉默了
今天又一辆起亚狮跑被拖进厂里，维修师傅说在这两个月内，算上这辆已经有三辆起亚狮跑在我们厂维修过，而且这三辆狮跑出现的问题都大同小异，基本都跟车主平时不经常保养有关。 而今天这辆相对…
-
为了强调“舒适”，这两款奇奇怪怪的玩意用了5个亿！
1919是个值得纪念的年份，英国、法国、德国这三个相邻的欧洲国家都诞生了传奇般的汽车品牌——分别是宾利、雪铁龙，德国是？（留个悬念，有知道的小伙伴留言喔）。 我们认知里的雪铁龙，就…
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.