NOx Sensor Supply - Test
使用此步骤对 NOx 传感器电源故障进行故障诊断与排除。 如果以下一个诊断代码为激活状态或易于重复，也使用本步骤。
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| J1939 代码和描述 | CDL 代码和描述 | 注释 |
|---|---|---|
| 3216-6
后处理 #1 进口 NOx：电流高于正常值 |
3002-6
发动机排气 NOx 含量传感器：电流高于正常值 |
NOx 传感器电源电路中检测到短路。 |
| 3226-6
后处理 #1 出口 NOx：电流高于正常值 |
3609-6
后处理 #1 出口 #1 NOx 含量传感器：电流高于正常值 |
NOx 传感器电源电路中检测到短路。 |
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| |
| 图 1 | g03741044 |
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| 故障诊断与排除测试步骤 | 值 | 结果 |
|---|---|---|
1. 检查代码 A. 将配电箱上的 DC 断路器转至接通位置。 B。 连接 Cat® 电子技师 (ET) 与维修工具接头。 C. 确定是否有代码激活或记录。 |
代码 |
结果：NOx 传感器的 A -6 代码处于激活或记录状态。 检测到电子控制模块（ECM）和 NOx 传感器电源之间的导线线束短路。 修理：修理或更换导线线束。 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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