0171-03 Ambient Air Temperature voltage high
产生此代码的情况:
ECM 检测到下述情况时:
- 环境空气温度传感器送来的信号电压偏高于 4.92 VDC 超过八秒。
- "Allow Idle Shutdown Timer Override(允许怠速停机定时器超越)"参数编程为 "Outside Temperature Based(基于外界温度)"或 "J1587 Outside Temperature Based(基于 J1587 外界温度)"。
- ECM 至少已通电两秒钟。
系统响应:
ECM 将默认为 65 °C (149 °F) 的外界空气温度。 电子维修工具将在 "Outside Temperature Sensor(外界温度传感器)"的状态旁显示 "DIAG"。
在此代码处于激活状态时,"Allow Idle Shutdown Override(允许怠速停机超越)"停用。
测试步骤 1. 进行以下的诊断步骤: 发动机温度传感器开路或短路 - 测试
结果:
- 正常 - 停止
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