0190-11 Primary Engine Speed no pattern (34)
产生此代码的情况:
发动机控制模块 (ECM) 检测到以下情况：
- 辅助正时信号仍有效的同时，主发动机转速/正时信号缺失，接着在一秒内返回。
- 主发动机转速/正时信号缺失和/或间歇性。
- 发动机盘车起动期间，主发动机转速/正时信号缺失超过 15 秒钟。
系统响应:
ECM 可利用辅助发动机转速/正时传感器送来的信号计算发动机转速。
ECM 在该代码设置激活状态十小时后会点亮检查发动机指示灯。
发动机响应没有明显变化，除非这两个发动机转速/正时信号同时缺失。
测试步骤 1. 进行以下的诊断步骤: 发动机转速/正时传感器电路 - 测试
结果:
- 正常 - 停止
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