914G Compact Wheel Loader and IT14G Integrated Toolcarrier Transmission Electronic Control System Caterpillar


MID 079 - CID 0687 - FMI 02

Usage:

IT14G 1WN
产生此代码的情况:

当控制装置激活时,控制装置检查触点。 如果触点不表示有效代码,则指示故障。 安装的选装件由代码指示。 参考下表获得特定机器的有效代码。

测试步骤 1. 检查选装件代码

  1. 将钥匙起动开关转到断开位置。

  1. 从控制装置上断开机器线束。

  1. 定位机器线束接头。

  1. 通过检查连续性来检查选装件代码是否正确。

  1. 从线束触点 2 检查。 检查触点 3、4、27、28 和 29。 参见下表了解正确的线束代码。

  1. 检查已安装的选装件。

表 1
选装件代码故障排除 (1) (2) (3)    
转速选装件     附件    
控制装置接头触点     3     4     27     28     29    
选装件代码接头触点     7     1     3     4     5    
标准转速     G     O     ?     ?     ?    
高速     O     G     ?     ?     ?    
负载检查     ?     ?     G     O     ?    
行驶控制装置     ?     ?     O     G     ?    
辅助转向     ?     ?     ?     ?     G    
( 1 ) O = 断开
( 2 ) G = 接地
( 3 ) ? = 对该选装件不重要

结果:

  • 是 - 选装件代码正确。 电路正常。

    修复: 进行以下额外步骤:检查线束接头触点。 将线束连接至控制装置。 将钥匙起动开关转到接通位置。 清除相同激活的故障。 将钥匙起动开关转到断开位置。 将钥匙起动开关转到接通位置。 重新检查控制装置。 如果相同故障激活,请更换控制装置。

    停止

  • 否 - 选装件代码不正确。 控制电路故障。

    修复: 更换电路。 还可能需要更换线束。 清除故障。

    停止

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