3054E and 3056E Industrial Engines and Engines for Caterpillar Built Machines Caterpillar


CID 1684 FMI 14

Usage:

3054E 304
产生此代码的情况:

电子控制模块 (ECM) 检测到喷油泵通信故障。 通信故障可能是由喷油泵接头断开或喷油泵的导线线束故障导致。

系统响应:

ECM 将会记录此诊断代码。 该诊断代码可在电子维修工具上查看。

1684-14 诊断代码将不对发动机性能造成任何影响。 1684-14 通常伴随有诊断代码 0174-02 或 0320-02。 诊断代码 0174-02 可导致发动机功率偏低。 如果诊断代码 0320-02 激活,ECM 将发动机转速限制为 1200 rpm。

需要进一步的故障诊断与排除。

测试步骤 1. 进行以下的诊断步骤: CAN 数据链路电路 - 测试

结果:

  • 确定 - 停止

  • 异常 - 转至测试步骤 2。

测试步骤 2.

连接测试 ECM,以确定故障是出在原来的 ECM 中还是喷油泵中。 请参阅故障诊断与排除, "更换 ECM"。

注: 测试 ECM 的参数必须与可疑 ECM 的参数匹配。 如果连接测试 ECM 后故障排除,重新连接可疑 ECM。 确认故障返回。 如果故障重现,更换可疑 ECM。

确认故障已消除。

结果:

  • 确定 - 停止

  • 异常 - 转至测试步骤 3。

测试步骤 3.

请联系 Caterpillar 代理商解决方案网络,以检查软件版本是否正确。 此外,还要检查有无软件更新。

如果故障仍然存在,必须更换喷油泵。 更换喷油泵前,请联系 Caterpillar 代理商解决方案网络。 如果事先不咨询就更换喷油泵,则将影响其保修。 请参阅拆解和装配, "喷油泵 - 拆卸"和拆解和装配, "喷油泵 - 安装"。

确认故障已消除。

结果:

  • 确定 - 停止

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