High Altitude Derate Occurrence
使用本程序诊断和排除海拔过高减额故障，或者在以下事件代码为激活状态时使用本程序。 有关事件代码和这些代码的默认触发点的信息，请参阅故障诊断与排除, "事件代码"。 必须进入 Caterpillar ET（Electronic Technician，电子技师）的监控系统才能查看此代码的当前触发点。
Show/hide table
| 事件代码 | ||
|---|---|---|
| 代码和描述 | 产生此代码的状况 | 系统响应 |
| E009（2）海拔过高减额 | 电子控制模块（ECM）检测到大气压力低于正常值。 | 发动机减额。 将会记录该代码。 |
可能原因
- 高海拔作业
- 大气压力传感器
建议的措施
高海拔作业
发动机运行海拔高度过高。
大气压力传感器
检查有无任何激活的或记录的大气压力传感器诊断代码。 如果存在一个激活的诊断代码，请参阅故障诊断与排除, "传感器信号（模拟、有源）- 测试"。
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