3500B and 3500C Generator Set Engines Caterpillar


E043 Low System Voltage Warning

Usage:

3508 BGX
产生此代码的情况:

电子控制模块(ECM)检测到电源电压低于 20 VDC。 可在故障诊断与排除, "事件代码"中找到有关此事件代码缺省设置及范围的信息。

系统响应:

事件代码会记录下来。

可能对性能的影响:

故障诊断和排除:

  • 蓄电池可能有故障。

  • 电气接头可能有故障。

测试步骤 1. 检查有无"激活"的诊断代码

  1. 启动 Caterpillar 电子技师(ET)。

  2. 将电源转到 ON(接通)位置。

  3. 检查有无任何激活的或记录的诊断代码。

预期结果:

应无任何诊断代码存在。

结果:

  • 正常 - 应无任何诊断代码存在。 继续测试步骤 2。

  • 异常 - 存在诊断代码。

    修复: 修理出现的诊断代码。 请参阅本手册"利用诊断代码进行故障诊断与排除"章节中的相关专题。 确保修理后故障被排除。

    停止

测试步骤 2. 对蓄电池进行检查

  1. 在蓄电池接线柱处测量无负荷电压。 有关检查蓄电池的正确步骤,请参阅测试和调整手册。

  2. 进行蓄电池负荷测试。 使用 4C-4911 蓄电池负荷测试仪。 请参阅操作手册, SEHS9249。 请参阅专门说明书, SEHS7633。

预期结果:

蓄电池空载电压应至少为 23.5VDC,蓄电池应通过负载测试。

结果:

  • 正常 - 蓄电池空载电压至少为 23.5VDC,蓄电池通过负载测试。 可能存在间歇性故障。

    修复: 监测发动机的运行。 修理故障。 确保修理后故障被排除。

    停止

  • 异常 - 蓄电池空载电压低于 23.5 VDC,和/或蓄电池无法通过负载测试。

    修复: 蓄电池或交流发电机导致故障。 重新对蓄电池进行充电或者更换蓄电池。 确认原来的故障已经被排除。 请参阅测试和调整手册以了解有关充电系统的信息。

    停止

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