3406E, C-10 and C-12 On-highway Engines Caterpillar


0111-11 Very Low Coolant Level (62)

Usage:

3406E 1LW
产生此代码的情况:

发动机控制模块(ECM)检测到以下情况:

  • 冷却液液位极低时间超过 30 秒。

  • 将 "Coolant Level Sensor(冷却液液位传感器)"参数编程为 "Yes(是)"。

系统响应:

ECM 将记录诊断代码并触发快照。 该故障诊断代码为激活状态的同时,检查发动机指示灯亮起。 ECM 将在 Caterpillar 电子技师(Cat ET)的 "Engine Coolant Level(发动机冷却液液位)"状态旁显示 "Low(偏低)"。

注: 如果安装了冷却液液位偏低指示灯,则冷却液液位偏低指示灯将代替警告灯点亮。

清除此诊断代码需要出厂密码。

发动机功率以每秒 1% 的速度减额 35%。 车速被限定到最高 72 km/h (45 mph)。

注: 如果将 "Engine Monitoring(发动机监测)"编程为 Shutdown(停机),则在此诊断代码激活 30 秒后发动机将停机。

测试步骤 1. 检查冷却液液位

  1. 检查发动机冷却液液位。 请参阅操作和保养手册以了解更多信息。

预期结果:

发动机冷却液液位正常。

结果:

  • 正常 - 发动机冷却液液位正常。

    修复: 确保冷却液液位传感器安装正确。

    停止

  • 异常 - 发动机冷却液液位过低。

    修复: 为发动机添加冷却液。 请参阅操作和保养手册以了解更多信息。

    转至测试步骤 2。

测试步骤 2. 检查冷却系统有无泄漏。

  1. 检查有无发动机冷却液泄漏。

  1. 检查机油内有无冷却液。

预期结果:

无泄漏。 机油内没有冷却液。

结果:

  • 正常 - 发动机未损失任何发动机冷却液。

    修复: 确保发动机冷却液正常。运行发动机,直到发动机达到正常工作温度。发动机停机,使发动机冷却下来。重新检查发动机冷却液液位。 如果冷却液液位过低,则添加更多发动机冷却液。

    停止

  • 异常 - 发动机正在泄漏发动机冷却液,或者机油内有冷却液。

    修复: 修理泄漏处。确认修理已排除故障。

    停止

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