CX48-P2300 Petroleum Transmission Power Train Electronic Control System Caterpillar


General Information

Usage:

CX48-P2300 GDH
通过下述列表中的任何维修工具可以访问系统 ECM 诊断:

  • VIMS

  • Caterpillar 监控系统

  • Cat® 电子技师 (Cat ET) 维修工具

  • 电子控制分析编程 (ECAP)

为诊断和排除机器电子控制系统的故障,需要从机器的维修手册中获得更多信息。 下面列出了所需的一些支持资料:

  • 专门说明书, REHS7047, "应用和安装指南(机械)"

  • 专门说明书, REHS7048, "应用和安装指南(电气)"

  • 操作和保养手册, SEBU9036, "CX48-P2300 石油变速箱"

  • 电气示意图, UENR3186, "CX48-P2300 动力传动系电子控制系统"

本手册结尾含有一幅典型的系统示意图作为指南。 有关正在诊断的机器的准确示意图,请参阅维修手册中的 电气系统示意图。

当诊断步骤指示你"修理线束或更换线束"时,使用机器的电气系统示意图追踪电路。

执行线束接头的导通性检查,确定线束故障位置。 务必检查部件接头上的接地电路。 接头的接地触点与机架接地之间的电阻应小于 5 欧姆。 ECM 电源电路在接地接头触点与机架接地之间的电阻应小于 2 欧姆。 为确保正常工作,信号电路的电阻应小于 5 欧姆。 大于 5 欧姆的过大接地电阻会导致故障诊断发生错误。

故障诊断和排除过程中,在更换任何部件之前应先检查所有连接。 如果这些连接不清洁、不牢固,则可能会导致永久性电气故障或间歇性电气故障。 检查并确认已将导线完全推入接头中。 在进行其它测试之前,确保所有连接牢固。

一个电气部件的故障可能会导致其他部件出现故障。 同样,一个电气部件的故障可能是由其他部件的故障引起的。 在更换部件之前,务必先尝试排除电气系统故障的原因。

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