3406E and 3456 Generator Set Engines Caterpillar


E173 High Exhaust Temperature Warning

Usage:

3406E 8AZ
产生此代码的情况:

电子控制模块(ECM)可检测以下状况:

  • 排气进口温度高于 600 °C (1112 °F) 的缺省温度长达 5 秒。

  • 发动机已运行 3 秒。

  • 诊断代码 CID-FMI 827-08 和 CID-FMI 828-08 处于非激活状态。

系统响应:

事件代码会记录下来。 当排气进口温度高于 600 °C (1112 °F) 的时间长达 5 秒时,警告处于激活状态。 温度返回 590 °C (1094 °F) 以下后,警告变为非激活状态。 如果排气进口温度超过触发点 1 秒,新的警告将出现。

  • 可能存在高于建议级别的排气阻力。

  • 冷却系统可能有问题。

  • 冷却液温度传感器可能有问题。

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)。

  1. 将电源转到 ON(接通)位置。

  1. 检查有无任何活动或记录诊断编码。

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和排除"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. 对冷却系统进行检查。

  1. 对冷却系统进行检查。 可能的原因,请参阅故障诊断和排除, "冷却液温度过高"中的诊断步骤。

预期结果:

冷却系统没有故障。

结果:

  • 正常 - 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 - 冷却系统有故障。

    修复: 修理故障。 确保修理后故障被排除。

    停止

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