C4.4 and C6.6 Engines for Caterpillar Built Machines Caterpillar


Intermittent Engine Shutdown

Usage:

CS-56B 437
注: 如果发动机完全关停且必须重新起动发动机,只能使用这个程序。

可能原因

  • 诊断代码

  • 进气

  • 电气接头

  • 燃油供给

建议的措施

诊断代码

检查电子维修工具上是否出现激活的代码。 在继续该程序之前,排除所有激活或最近记录的诊断代码。

进气

  1. 检查空气滤清器是否卡住或堵塞。

  2. 检查进气管是否堵塞。

电气接头

  1. 检查以下位置的接头安装是否正确:

    • P1 ECM 接头

    • P2 ECM 接头

    • P532 燃油导轨泵电磁阀接头

  2. 请参阅故障诊断与排除, "电气接头 - 检查"。

  3. 检查从 ECM 至蓄电池室的蓄电池电缆。 请参阅示意图。 检查电缆和电源继电器。 检查ECM的电源和接地线路的连接情况。 有关更多信息,请参阅示意图。

  4. 从电子维修工具的诊断测试中选择"摇摆测试"。

  5. 选择要监控的正确参数组。

  6. 按下"START(起动)"按钮。 晃动配线线束以再造间歇性故障。

    注: 如果存在间歇性故障,状态会得到突出显示,并且会听到嘟嘟声。

  7. 修复所有故障,并确保排除了故障现象。 如果故障现象仍然存在,请参阅"燃油供给"。

燃油供给


注意

持续盘车不要超过30秒。 再次盘车前,让起动马达先冷却2分钟。


  1. 目视检查油箱的燃油。 燃油表可能出现故障。

  2. 确保燃油供给阀(如有配备)处在完全打开位置。

  3. 如果温度低于 0 °C (32 °F),检查燃油有无凝固(结蜡)。

  4. 检查燃油的粗滤器/油水分离器是否含水。

  5. 检查供油管路有无阻塞。

  6. 检查低压燃油管是否拧紧并正确固定。

  7. 检查燃油滤清器。

  8. 检查柴油是否受污染。 请参阅系统操作、测试与调整, "燃油质量 - 测试"。

  9. 检查燃油系统内是否有空气。 请参阅系统操作、测试与调整, "燃油混入空气 - 测试"。

  10. 确保燃油系统已充注。 请参阅系统操作、测试与调整, "燃油系统 - 注油"。

  11. 检查燃油压力。 请参阅系统操作、测试与调整, "燃油系统压力 - 测试"。

  12. 如果没有消除故障,从测试步骤 1 开始重复此测试。

Caterpillar Information System:

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C4.4 and C6.6 Industrial Engines and Engines for Caterpillar Built Machines System Overview
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C4.4 and C6.6 Industrial Engines and Engines for Caterpillar Built Machines Indicator Lamps
C4.4 and C6.6 Engines for Caterpillar Built Machines Replacing the ECM
C4.4 and C6.6 Engines for Caterpillar Built Machines Self-Diagnostics
C4.4 and C6.6 Industrial Engines and Engines for Caterpillar Built Machines Engine Wiring Information
C4.4 and C6.6 Engines for Caterpillar Built Machines Flash Programming
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