621G, 623G, 627G, 631G, 637G, and 657G Wheel Tractor-Scrapers Power Train Electronic Control System Caterpillar


MID 027 - CID 1276 - FMI 13

Usage:

657G A4G
产生此代码的情况:


图 1g00921022

铲运斗降下比例电磁阀电路示意图

在 ECM 检测到电磁阀超出标定后会记录该诊断代码。

该诊断代码可能的原因如下:

  • 自上一次标定后,更改了卡特彼勒监测系统中编程设置的机器序列号。

  • 更换了机器变速箱/底盘 ECM。

  • ECM 出故障。 这不太可能。

系统响应:

在出现该诊断代码后,监测器上会显示一个 1 级警告。 该诊断代码会使挡板回到限制工作状态的缺省设置。 这种工作状态不允许机器在最大性能水平下工作。

测试步骤 1. 重新标定电磁阀。

重新标定电磁阀。 请参阅测试和调整, "铲运斗 - 标定"。

预期结果:

成功完成标定后该诊断代码应变为未激活状态。

结果:

  • 是 - 标定后该诊断代码变为未激活状态。 恢复机器的正常运转。停止

  • 否 - 标定后该诊断代码没有变为未激活状态。

    修复: 转到故障诊断, "操纵手柄标定不成功",继续进行故障诊断。

    停止

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