Engine Shutdown or Start Inhibit Initiated by Driven Equipment
使用此步骤对发动机意外停机进行故障诊断与排除。 此外，如果下列事件代码为激活或记录状态，使用此步骤。
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| J1939 代码和描述 | 注释 |
|---|---|
| 970-0
发动机辅助发动机停机开关：高 - 最高严重程度 (3) |
发动机准备起动。 但是，电子控制模块（ECM）收到一个表明从动设备没有为发动机起动做好准备的信号。
发动机盘车被阻止。 记录该代码。 |
- 代码
- 信号
- 接头和配线
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| 故障诊断与排除测试步骤 | 数值 | 结果 |
|---|---|---|
1. 检查代码 A. 连接 Cat® 电子技师 (ET) 与维修工具接头。 B。 查找与事件代码系统相关的现行代码。 |
代码 |
结果：相关代码为现行状态。 修理：在继续进行此测试前，诊断并排除所有相关代码。 结果：代码激活或被记录。 转至测试步骤 2。 |
2. 检查从动设备 A. 确定从动设备是否发出下列其中一个请求： - "禁止起动" - "停机" |
信号 |
结果：驱动设备未请求"禁止起动"或"停机"信号。 转至测试步骤 3。 结果：驱动设备请求"禁止起动"或"停机"信号。 修理：有关从动设备的信息，请参考原始设备制造商 (OEM) 维修信息。 如果故障未得到排除，则转至测试步骤 3。 |
3. 检查电气接头和配线 A. 将主断路开关转到断开位置。 B。 彻底检查从动设备和 ECM 之间的接头和导线。 更多有关信息资料，请参阅故障诊断与排除, "电气接头 - 检查"。 C. 在接头导线上执行 D. 检查线束有无磨损和夹点。 E. 检查电路的电阻。 电路的正确电阻值是 5 欧姆或更低。 |
接头和配线 |
结果：接头和/或配线有故障。 修理：修理或更换接头或导线。 确保所有密封件都正确安装到位，确保接头都连接。 确认修理后故障得到排除。 |
如果以上步骤未解决问题，请联系当地 Cat 代理商的技术通信员（TC）。 如需进一步的帮助，您的 TC 可以通过代理商解决方案网络（DSN）与您交谈。
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