ECM Does Not Communicate with Other Modules
- 电子控制模块(ECM)
- 电气接头
- 数据链路通信
- 钥匙开关电源
连接 Caterpillar 电子技师(ET)。 如果 ECM 不与 Cat ET 通信,请参考维修故障诊断与排除, "电子维修工具无法进行通信"。
注: 此应用利用双数据链路通信与 Cat ET 通信。 如果使用单数据链路与 ECM 通信,则某些功能将会不可用。
检查 J1/P1 和 J2/P2 ECM 接头的安装是否正确。 检查所有其他适用接头的安装是否正确。 请参考维修故障诊断与排除, "电气接头 - 检查"。
确认通信通过 Cat 数据链路和 CAN 数据链路进行。 如果怀疑通过数据链路进行的通信有故障,请参考故障诊断与排除, "数据链路 - 测试"。
确保应用上的所有模块都接收到了钥匙开关电源。 有关对发动机钥匙开关电路进行故障诊断与排除的信息,请参考故障诊断与排除, "供电电源 - 测试"。
Caterpillar Information System:
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