C4.2 and C6.4 Engines for Caterpillar Built Machines Caterpillar


Engine Speed Does Not Change

Usage:

320D A6F
注: 只有当发动机转速不变化时才能使用本程序。

可能原因

  • 诊断代码

  • 事件代码

  • 油门信号

修理建议

诊断代码、事件代码和减额

连接 Caterpillar ET(Electronic Technician,电子技师),检查有无激活的代码和/或记录的代码。 在继续进行本程序之前,诊断并排除所有激活的代码。

油门信号

注: 油门配置只需在发动机从未运转时进行检查。

监测 Cat ET 上 "Throttle Position(油门位置)"的状态。 确认 "Throttle Position(油门位置)"状态保持稳定,发动机能达到高怠速转速。 请参阅针对特定应用的相应诊断测试:

  • 故障诊断与排除转速控制, "(PWM)- 测试"

  • 故障诊断和排除 转速控制(开关)-, "测试"

  • 故障诊断与排除, "转速控制 - 测试"

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