725C, 725C2, 730C, 730C Ejector, 730C2, 730C2 EJ, 735B, 735C, 740B, 740B Ejector, 740C Ejector and 745C Articulated Trucks VIMSTM 3G Caterpillar


MID 161 - CID 0890 - FMI 09

Usage:

725C2 2L6
产生此代码的情况:


图 1g03501640

遥测电路

当通信网关 ECM 存在遥测数据链路通信异常更新率时,将会记录此诊断代码。

测试步骤 1. 确认广播系统的工作是否正常

  1. 确认广播系统(发射机)的工作是否正常。

预期结果:

广播系统(发射机)的工作正常。

结果:

  • 确定 - 广播系统(发射机)的工作正常。 转至测试步骤 2。

  • 异常 - 广播系统(发射器)的工作不正常。

    修复: 修理广播系统。

    停止

测试步骤 2. 检查线束中是否存在断路

  1. 打开钥匙开关和断路开关。

  1. 断开通信网关 ECM 接头。

  1. 断开广播系统上的 RS232 端口。

  1. 测量表 1 中显示的电路的电阻。

    表 1
    通信网关 ECM     至     RS232 广播端口    
    触点 13(导线 N960-OR)     至     触点 5(导线 N960-OR)    
    触点 22(导线 N957-PK)     至     触点 7(导线 N957-PK)    
    触点 31(导线 N979-GN)     至     触点 8(导线 N979-GN)    
    触点 23(导线 N970-YL)     至     触点 9(导线 N970-YL)    
    触点 30(导线 N973-BR)     至     触点 10(导线 N973-BR)    

预期结果:

所有测量值小于 5.0 欧姆。

结果:

  • 确定 - 所有测量值小于 5.0 欧姆。 继续测试步骤 3。

  • 异常 - 所有测量值均大于 5000 欧姆。

    修复: 修理或更换线束。

    停止

测试步骤 3. 检查线束是否对地短路

线束保持从通信网关 ECM 和广播系统断开的状态。

  1. 测量机架接地与以下通信网关 ECM 接头触点之间的电阻:

    • 触点 13(导线 N960-OR)。

    • 触点 22(导线 N957-PK)。

    • 触点 23(导线 N970-YL)。

    • 触点 30(导线 N973-BR)。

预期结果:

所有测量值均大于 5000 欧姆。

结果:

  • 确定 - 所有测量值均大于 5000 欧姆。 通信网关 ECM 可能出现故障,但 ECM 不太可能出现故障。

    修复: 退出本步骤。 重新执行本步骤。 如果未找到故障,请联系您的 Cat® 代理商。 如果需要更换 ECM,请参阅本手册的测试和调整, "电子控制模块(ECM)- 更换"部分。

    停止

  • 异常 - 电阻测量值小于 5000 欧姆。

    修复: 修理或更换线束。

    停止

Caterpillar Information System:

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725C, 725C2, 730C, 730C Ejector, 730C2, 730C2 EJ, 735B, 735C, 740B, 740B Ejector, 740C Ejector and 745C Articulated Trucks VIMSTM 3G MID 161 - CID 1273 - FMI 09
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