C7 and C9 On-Highway Engines Caterpillar


0111-14 Low Coolant Level Warning

Usage:

C9 9DG
产生此代码的情况:

发动机控制模块 (ECM) 检测到以下情况:

  • 冷却液液位传感器显示冷却液液位过低。

  • "冷却液液位传感器"被设为 "4 Pin"(4-针式)或 "2-线式浮子传感器"。

  • 发动机的总运行时间小于 6 小时。

注: 此诊断代码仅出现在发动机运行的最初 6 个小时内。 清除此诊断代码不需要密码。

系统响应:

在卡特彼勒电子技师 (ET) 中,在 "发动机冷却液液位"状态的旁边 ECM 将会显示 "低"和 "诊断"。 当此代码为激活状态时,检查发动机指示灯和报警灯点亮。

注: 如果安装了冷却液液位过低指示灯,点亮的是这个指示灯而非报警灯。

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,了解更多资料。

预期结果:

发动机冷却液正常。

结果:

  • 正常 - 发动机冷却液正常。

    修复: 确认冷却液液位传感器的安装是否正确。

    停止

  • 异常 - 发动机冷却液过低。

    修复: 向发动机中添加冷却液。 请参阅操作和保养手册,了解更多资料。

    继续进行测试步骤 2。

测试步骤 2. 检查冷却系统有无泄漏

  1. 检查发动机冷却液有无泄漏。

  1. 检查发动机机油中有无冷却液。

预期结果:

没有泄漏。 发动机机油中没有冷却液。

结果:

  • 正常 - 发动机没有损失任何冷却液。

    修复: 确保发动机冷却液液位正常。运行发动机,直至发动机达到正常工作温度。发动机停机,使发动机冷却下来。再次检查发动机冷却液液位。 如果冷却液液位过低,添加更多的发动机冷却液。

    停止

  • 异常 - 发动机正在泄漏冷却液或发动机机油中有冷却液。

    修复: 修理泄漏。核实修理后故障排除。

    停止

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