CID 1421 FMI 09 Unable to communicate with Rear Engine ECM
产生此代码的情况:
成功建立通信后电子控制模块 (ECM) 与后发动机 ECM 之间的通信停止。
系统响应:
ECM 将会记录该诊断代码。
后发动机进气加热器指示灯不工作。
测试步骤 1. 进行以下的诊断步骤: 卡特彼勒数据链路电路 - 测试
结果:
- 正常 - 停止
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