DEF Control Module Temperature Is High
在以下任一事件码为现行状态时使用本步骤。 关于事件代码的信息，请参阅故障诊断与排除, "事件代码"。 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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| 故障诊断代码 | |||
|---|---|---|---|
| J1939 代码 | CDL 代码 | 代码说明 （代码说明可能不同） |
注释 |
| 5480-16 | E1430（2） | 后处理 1 柴油机排气处理液控制器温度：高 - 中等严重程度（2） | 柴油机排气处理液控制单元（DCU）的温度已超过 116° C (240° F) 的触发点。 |
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| 图 1 | g02931976 |
按所列步骤顺序完成以上步骤。
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| 故障诊断与排除测试步骤 | 数值 | 结果 |
|---|---|---|
1. 确定高温的根源 A. 评估 DCU 的安装位置。 B. 检查 DCU 附近的热源。 |
热源 |
结果：DCU 位于热源附近。 修理：通过安装隔热板或移开产生热量的部件来消除热源。 转至测试步骤 2。 |
2. 更换 DCU A. 更换 DCU。 |
DCU | 结果：更换了 DCU。 确认故障已排除。 |
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