3406E, C-10 and C-12 On-highway Engines Caterpillar


0171-03 Ambient Air Temperature voltage high

Usage:

3406E 1LW
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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