Coolant Pressure Is High
使用本步骤诊断和排除冷却液压力高故障,或者在以下事件代码为激活状态时使用本步骤。 关于事件代码的信息,请参阅故障诊断与排除, "事件代码"。 必须进入 Caterpillar 电子技师(ET)上的发动机监控系统才能查看这些代码的当前触发点。 关于发动机监控系统的信息,请参阅故障诊断与排除, "发动机监控系统"。
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事件代码 | ||
---|---|---|
说明 | 激活代码的条件 | 系统响应 |
E224(3) 水套水进口压力高关停 | 冷却系统压力升至编程延迟时间的触发点以上。 | 记录该代码。
停机输出启动。 发动机停机。 |
- 冷却液压力开关的线束配线断路
- 发动机冷却系统压力过大
如果有 E224(3) 水套水进口压力高关停,电子控制模块(ECM)检测冷却液压力开关电路断路(进口)。 检查接线有无损坏或腐蚀。 请参阅故障诊断与排除, "电气接头 - 检查"。
如果发现电路接线有故障,根据需要,修理接线。
水套水冷却液泵进口处的压力开关设计成在
务必使用准确的仪表进行您的测量。 使用没有正确标定的仪表可能会导致错误的故障诊断。
如果压力低于
如果在缸体进口处测量压力至少为
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