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


CID 1684 FMI 10

Usage:

3054E 304
产生此代码的情况:

电子控制模块 (ECM) 检测来自喷油泵的以下不正确响应之一。

  • 开路

  • 导线对高压短路。

  • 导线对低压短路。

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。

系统响应:

当诊断代码激活时,发动机可能关停。 此外,当诊断代码激活时,发动机可能不起动。

需要进一步的故障诊断与排除。

测试步骤 1.

在以下连接之间,使用万用表进行检查:

  • J1:1

  • P40:5

注: 当发动机盘车并运转时,端子 P40:5 上的蓄电池电压应降至 0 伏。

确保故障已排除。

结果:

  • 检查有无现行诊断代码 - 停止

测试步骤 2.

将测试 ECM 连接至发动机,以确定故障是否由原来的 ECM 导致。 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。

结果:

  • 确定 - 停止

  • 异常 - 转至测试步骤 3。

测试步骤 3.

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。

更换喷油泵。 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

Caterpillar Information System:

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