C11, C13 and C15 On-highway Engines Caterpillar


0105-03 Intake Manifold Air Temperature voltage high (38)

Usage:

C15 BXS
产生此代码的情况:

发动机控制模块 (ECM) 检测到以下情况:

  • 来自进气歧管空气温度传感器的信号电压高于 4.95 VDC 超过 8 秒。

  • 发动机冷却液温度高于 −10 °C (15 °F)。

  • ECM 至少已通电两秒钟。

系统响应:

ECM 将记录诊断代码并触发快照。 当该诊断代码变为激活状态 10 小时后,检查发动机指示灯点亮。 ECM 将 40 (C)104 °F 默认为进气歧管空气温度。 如果增压压力高于 70 kPa (10 psi),ECM 将会打开冷却风扇。

如果出现下列情况,诊断代码将被禁止:

  • 环境气温低于 −30 °C (−22 °F)。

  • ECM 已启动了发动机的极度寒冷模式。

  • 应用配备了环境温度传感器。

如果所有条件都满足,环境气温将被用作进气歧管温度直至发动机退出极度寒冷模式。

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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