C3.4B Engines Caterpillar


Diesel Particulate Filter Active Regeneration Was Interrupted

Usage:

CD-44B 398
此步骤涉及以下诊断代码:

表 1
柴油微粒滤清器(DPF)主动再生的诊断故障代码中止    
J1939 代码     说明     备注    
5319-31     后处理 1 柴油微粒滤清器再生未完成     电子控制模块(ECM)中止了主动再生。
主动再生的最大持续时间已超过三次。

如有配备,警告灯将闪烁。 发动机将减额。 ECM 将会记录此诊断代码。
成功主动再生后,该代码变为非现行状态。    

执行下述步骤:

建议的措施

注: 下面以概率的先后顺序列出了这些步骤。 依次完成这些步骤。

表 2
故障诊断与排除测试步骤     数值     结果    

1. 诊断代码

A. 建立电子维修工具和电子控制模块 (ECM) 之间的通信。

B. 检查有无现行诊断代码。
   

代码
   

结果:激活或记录了故障诊断代码。

继续此步骤之前,先对可能导致再生不成功的所有诊断代码进行故障诊断与排除。

结果:未激活或记录故障诊断代码。

转至测试步骤 2。
   

2. 排气管上的绝缘层(如有配备)

A. 检查发动机和清洁排放模块(CEM)之间排放管上的绝缘层。 确保绝缘层没有缺失或损坏。
   

隔垫
   

结果:绝缘层缺失或损坏。

修理或更换排气管上的绝缘层。

结果:绝缘层正常。

转至测试步骤 3。
   

3. 排气泄漏

A. 彻底检查发动机和 CEM 之间的排气管有无泄漏。 确保所有连接牢固且没有泄漏。
   

排气泄漏
   

结果:排气泄漏。

进行必要修理,并确认通过修理排除了故障。

结果:排气管正常。

继续测试步骤 4。
   

4. 手动再生

A. 使用以下方法之一执行手动再生:

· 应用上的"强制再生"开关(如有配备)
· 电子维修工具上的"微粒滤清器强制再生"

B. 使用电子维修工具清除所有记录的诊断代码。
   

完成再生
   

结果:再生成功完成且没有主动再生代码。

将发动机重新投入使用。


结果:再生未成功完成。

请联系代理商解决方案网络 (DSN)。
   

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