2012 款神车五菱荣光疑难案例解析
<p style="box-sizing: border-box; margin: 1.65pt 38.8pt 0pt 1.3pt; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 12pt; line-height: 1.15; color: rgb(0, 0, 0); text-indent: 24pt; outline: 0px !important;"><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">故障现象：12 年五菱荣光</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">B12 发动机，因事故造成电脑板以及线束损坏，</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">更换了一块电脑版，发动机线束，装上无法着车。</span></p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;"></p><p style="box-sizing: border-box; margin-top: 5.5pt; margin-bottom: 0pt; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; line-height: 25.32; color: rgb(0, 0, 0); text-indent: 0.7pt; outline: 0px !important;"><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;"><img alt="图片-2012 款神车五菱荣光疑难案例解析-蛙趣网" fetchpriority="high" decoding="async" width="602" height="338" class="wp-image-666 size-full" src="https://wapq.cn/wp-content/uploads/2025/03/20250305232513773-20250305232513540-IM-2-602w338h.jpeg" imgbox-index="0" style="box-sizing: border-box; outline: 0px !important; height: auto; max-width: 100%; border: 0px; vertical-align: middle; max-height: 100%; display: block; margin: auto;"></span></p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;"></p><p style="box-sizing: border-box; margin: 7.9pt 36.4pt 0pt 1.1pt; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 12pt; line-height: 1.15; color: rgb(0, 0, 0); text-indent: 17.95pt; outline: 0px !important;"><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">初步检查：诊断仪读取数据流，无法进入系统，启动时，马达能够带动发动</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">机快速运转，测喷油信号，用</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">LED</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">试灯测，试灯不闪，点火信号也没有。</span></p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;"></p><p style="box-sizing: border-box; margin: 1.45pt 36.25pt 0pt 1.1pt; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 12pt; line-height: 1.17; color: rgb(0, 0, 0); text-indent: 18.2pt; outline: 0px !important;"><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">故障分析：通过初步检查，启动没喷油信号，没点火信号，由于是新换的电</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">脑版，出问题的概率比较小，比如说程序不对，也不能忽略，还有线束，新换的</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">配件不一定是好的，我们作为专业维修技师，要细心诊断。</span></p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;"></p><p style="box-sizing: border-box; margin: 1.25pt 36.15pt 0pt 1.25pt; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 12pt; line-height: 1.18; color: rgb(0, 0, 0); text-indent: 17.9pt; outline: 0px !important;"><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">检修步骤：首先，我们要知道，发动机要启动成功，必须要有曲轴转速信号</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">与凸轮轴位置信号，来确定点火时间以及喷油时间。先测量曲轴位置传感器，拔</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">下插头，打开点火开关，测到一根</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">12</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">伏，一根</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">0.7</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">伏，还有一根地线，</span><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">这时就</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">可以确定曲轴位置传感器的信号电压不正常。</span></p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;"></p><p style="box-sizing: border-box; margin-top: 0.95pt; margin-bottom: 0pt; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; line-height: 19.99; color: rgb(0, 0, 0); text-indent: 36.7pt; outline: 0px !important;"><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;"><img alt="图片-2012 款神车五菱荣光疑难案例解析-蛙趣网" decoding="async" width="476" height="267" class="wp-image-667 size-full" src="https://wapq.cn/wp-content/uploads/2025/03/20250305232514138-20250305232514350-IM-4.jpeg" imgbox-index="1" style="box-sizing: border-box; outline: 0px !important; height: auto; max-width: 100%; border: 0px; vertical-align: middle; max-height: 100%; display: block; margin: auto;"></span></p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;"></p><p style="box-sizing: border-box; margin: 2.4pt 0.6pt 0pt 1.1pt; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 12pt; text-align: justify; line-height: 1.19; color: rgb(0, 0, 0); text-indent: 24.05pt; outline: 0px !important;"><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">这车的曲轴位置传感器属于霍尔式，在拔掉插头，打开点</span><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">火开关时测信号电</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">压是</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">5</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">伏为正常，而实测结果为</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">0.7</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">伏。再检查凸轮轴位置传感器，发现</span><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">信号线</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">是</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">0.4</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">伏，这两个传感器的信号电压都不正常</span><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">，就怀疑一个电脑版内部故障，还</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">有一个就是线束虚接。首先排查曲轴位置传感器与凸轮轴位置传感器的线路，没</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">有发现虚接的情况，而且线阻在一欧姆以内，正常，就怀疑电脑版坏了。购买电</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">脑板发货时间太久，恰巧朋友有一辆同款的车，电脑板型号一样，于是将这车换</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">的新电脑板装到朋友的那辆车上，可以着车，测曲轴位置传感器与凸轮轴位置传</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">感器的信号电压，在插头拔掉之后，打开点火开关测，有</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">5</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">伏，说明电脑版是好</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">的。</span></p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;"></p><p style="box-sizing: border-box; margin: 1.1pt 0.6pt 0pt 1.1pt; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 12pt; text-align: justify; line-height: 1.18; color: rgb(0, 0, 0); text-indent: 24.1pt; outline: 0px !important;"><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">再回头思考，确定问题出在线路上，但是测量的时候，</span><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">线束是拔了测，没有</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">插上测，应该是忽然了插头虚接的可能，果不其然，当晃动电脑板插头是，信号</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">电压有 5 伏，偶尔 0V，问题找到</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">。重新处理线束母插，重新测一遍曲轴位置传</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">感器和凸轮轴位置传感器器的信号电压，都有 5V，插头插上，成功着车，经过</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">询问线束是副厂件。</span></p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;"></p><p style="box-sizing: border-box; margin: 1.3pt 0.65pt 0pt 1.15pt; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 12pt; text-align: justify; line-height: 1.18; color: rgb(0, 0, 0); text-indent: 12.15pt; outline: 0px !important;"><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">维修心得：通过这个案例，又收获一种检查方法，同时也</span><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">要吸取教训，测量方</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">法不对，也会造成误判，还有，配件一定要用原厂的，用副厂的配件，会造</span><span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">成维</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">修成本增加，也增加维修难度，测量线束的时候一定要想到虚接，这个案例就是</span> <span style="box-sizing: border-box; font-size: 10.5pt; outline: 0px !important;">由于插头虚接造成的。</span></p><p></p>
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