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<h1 class="h1">柴油发电机感应器信号电压偏高或过低的检修法</span></h1>
<div class="text">发布来源：重康电力（深圳）有限公司　　发布日期: 2025-06-09　　访问量:547</div>
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<p>产生功率无力、油耗过高故障时，需要查验进气压力探头的性能。下面以康明斯ISM柴油发电机进气歧管压力探头为例，讲解压力传感器的ECU响应测试方法。</p><p>② 打开点火开关，用万用表直流电压档检查电源线）V<a href="http://www.fdjhs.cn" target="_blank">康明斯柴油发电机控制面板</a>，则供电正常；如果电压高于5.25V，则说明电源线与高压电源短路。如果电源线）V范围内，则说明回路线开路。</p><p>③ 如果供电正常，则应检查信号线绝缘性。在断开感应器插接器及ECU探头插接器的要素下，将一表笔接于ECM感应器插接器信号线端孔中，另一表笔逐一与ECU传感器插接器其他端孔连接，用电阻档检测线kΩ为合格。如果测定结果小于100kΩ，则说明线间短路<a href="http://www.fdjhs.cn" target="_blank">柴油发电机工作原理</a>，应修理或更换线束。</p><p>敬告：由于ECU内压力探头信号线kΩ下拉电阻，当信号线断线时，ECU内部的信号线通过其搭铁，ECM会报出信号电压偏低的故障码。大多数的压力感应器信号线断线时，均报出信号电压偏低故障。需要注意的是，多数共轨柴油发电机的轨压传感器与之相反：信号线断线时，报出信号电压偏高损坏。</p><p>② 打开点火开关，用万用表直流电压档检测电源线）V，则供电正常；如果电压为0，则说明电源线事故，需要检查电源线是否开路或搭铁。</p><p>③ 如果供电正常，则应检验信号线通断情况。首先断开探头插接器及ECU传感器插接器，检查ECM传感器插接器触针是否松动、脏污或折断；用万用表一端接探头插接器信号线端子，另一端接ECU探头插接器信号线端孔，用电阻档检测导线Ω，则说明导线导通性正常。</p><p>④ 信号线绝缘性检验。在断开传感器插接器及ECU传感器插接器的条件下，将一表笔接于ECM感应器插接器信号线端孔中，另一表笔逐一与ECM感应器插接器其他端孔连接，用电阻档检查线kΩ为合格。如果检测结果小于100kΩ，则说明线间短路，应修复或替换线束。</p><p>⑤ 信号线搭铁检验。在断开传感器插接器及ECM探头插接器的条件下，将一表笔接于感应器插接器信号线端孔中<a href="http://www.fdjhs.cn" target="_blank">柴油发电机官网</a>，另一表笔搭铁，测量信号线与搭铁间电阻，阻值大于100kΩ为合格。如果检测结果小于100m，则说明线间短路，应维修或更换线束。</p></div><a href="http://www.fdjhs.cn/" target="_blank">http://www.fdjhs.cn</a>
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