CID 1639 FMI 09
产生此代码的情况:
电子控制模块（ECM）可检测以下状况：
- ECM 检测与机器安全系统（MSS）的通信损失。
系统响应:
如有配备，警告灯将点亮，ECM 将记录诊断代码。
可能对性能的影响:
发动机将无法起动。
故障诊断和排除:
此诊断代码将检测 MSS 的通信损失。
测试步骤 1. 进行以下的诊断步骤: "数据链路电路 - 测试"
结果:
- 正常 - 停止
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