C9.3B Aftertreatment Systems Caterpillar


Diesel Particulate Filter Temperature Is Low - If Equipped with ARD System

Usage:

D6 B72
利用本步骤对下方代码进行故障诊断与排除。

表 1
J1939 代码和描述  CDL 代码和描述  注释 
3242-18
后处理 #1 DPF 进气温度:低 - 中等严重程度 (2) 
E1014 (2)
低 DPF #1 进气温度 
后处理再生设备 (ARD) 已点火,A6:E2 电子控制模块 (ECM) 检测到 DPF 进口温度低。

主动再生立即停用。 发动机功率减额。 记录该代码。 在循环 ECM 电源前,此代码始终处于激活状态。 以下情况可导致此代码产生:

ARD 出口和 DPF 进口之间的排气管路断开,和/或 DPF 进口温度传感器出故障。 

表 2
故障诊断与排除测试步骤  数值  结果 

1. 检查排气管路

A. 认真检查 ARD 出口和 DPF 进口之间的排气管路。 查看有无以下故障:

1. 管路缺失、管路开裂或管路断开

2. 卡箍断裂或缺失
 

管路损坏或缺失
 

结果:管路未损坏或缺失。

转至测试步骤 2。

结果:管路损坏或缺失。

修理:进行必要的修理。

转至测试步骤 2。
 

2. 检查 DPF 进口温度传感器和配线

A. 认真检查 DPF 进口温度传感器配线有无损坏。

B。 认真检查 DPF 进口温度传感器有无损坏。
 

配线或传感器损坏
 

结果:配线和传感器未损坏。

转至测试步骤 3。

结果:配线和传感器损坏。

修理:进行必要的修理。 转至测试步骤 3。
 

3. 执行 "ARD 点火测试"

A. 连接到 Cat 电子技师。

B。 选择 "Diagnostics(诊断)"栏。

C. 选择 "Diagnostic Tests(诊断测试)"栏。

D. 选择 "ARD Ignition Test(ARD 点火测试)"栏。

注:如果 DPF 烟灰负载高于 80%,则不能执行 ARD 点火测试。 当 DPF 烟灰负载高于 80% 时,必须利用 Cat 电子技师执行手动 DPF 再生。
 

"ARD 点火测试"
 

结果:"ARD 点火测试"成功。

将发动机重新投入使用。

结果:"ARD Ignition Test(ARD 点火测试)"失败。

修理:更换 DPF 进口温度传感器。 重复 "ARD 点火测试"。

如果 "ARD 点火测试"成功,则将发动机重新投入使用。

如果 "ARD 点火测试"失败,则对产生的代码进行故障诊断与排除。
 

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。

Caterpillar Information System:

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