988G Wheel Loader Power Train Caterpillar


MID 081 - CID 1406 - FMI 13

Usage:

988G 2TW
产生此代码的情况:

该诊断代码与电磁阀( 6 号)(变速箱第一档离合器)有关。 FMI 13 意味着 ECM 已检测到电磁阀需要校准。 一旦电磁阀( 6 号)(变速箱第一档离合器)校准成功执行,诊断代码将消失。 该故障在新 ECM 中处于激活状态。

该诊断代码可能的原因如下:

  • 电磁阀出现故障。

  • 已经更换了 ECM 或安装了新软件。

  • ECM 出现故障。

系统响应:

当诊断代码出现时,换档可能存在粗暴或迟缓问题。

注: 如果任何情况将引起与该电磁阀有关的其它已激活诊断代码,请确保您已排除了这些情况。 例如,当 CID 1406 FMI 13 处于激活状态时,CID 1406 FMI 03 或 FMI 05 将处于非激活状态。 如果其它诊断代码处于激活状态,请首先排除这些诊断代码。 然后执行本步骤。

注: 执行本程序之前,请确保诊断代码 CID 1406 FMI 13 为激活状态。

测试步骤 1. 检查校准

  1. 执行校准步骤。 请参阅维修手册的测试和调整部分,了解正确的步骤。

  1. 观测 CID 1406 FMI 13 的状态。

预期结果:

CID 1406 FMI 13 为激活状态。

结果:

  • 是 - CID 1406 FMI 13 为激活状态。 没有纠正该诊断代码。 确认已将正确的软件闪存到了 ECM,或者在机器上安装了正确的 ECM。 然后重复校准。

    修复: 如果诊断代码仍旧存在,并且没有诊断代码的原因,则需更换 ECM。 ECM 不太可能会出现故障。 请在更换 ECM 前确认电磁阀和相关电路正确。

    停止

  • 否 - CID 1406 FMI 13 为未激活状态。 校准排除了引起诊断代码的条件。

    修复: 恢复正常运转。

    停止

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