Air Conditioning E22 - Evaporator Sensor (Short Circuit)
参考关于传感器的正确位置，请参阅系统操作, "空调系统"。
- 测量蒸发器传感器的电阻值。 请参阅"技术规格"。 转至步骤 2。
- 如果电阻值不正确，请参阅步骤 3。 如果电阻值正确，请参阅步骤 4。
- 更换蒸发器传感器。
- 断开传感器上的接头，并测量接头 GY/YL 和 BK/YL 间的电压。 请参阅"技术规格"。 转至步骤 5。
- 如果电压值不正确，请参阅步骤 6。 如果电压值正确，请参阅步骤 7。
- 检查并修理接头和控制面板间的线束。 另外，检查系统电源。
- 安装传感器，并测量控制面板端子 10 和 12 间的电压。 请参阅"技术规格"。 转至步骤 8。
- 如果电压值不正确，请参阅步骤 9。 如果电压值正确，请参阅步骤 10。
- 检查并修理接头和控制面板间的线束。
- 更换控制面板。
蒸发器传感器内的电阻
- 0 °C (32 °F) ... 1.645 kΩ
- 25 °C (77 °F) ... 5 kΩ
接头间的电压 ... 5.0 V
端子间的电压
- 10 °C (50 °F) ... 1.83 V
- 20 °C (68 °F) ... 1.34 V
- 25 °C (77 °F) ... 1.13 V
- 30 °C (86. °F) ... 0.96 V
- 20 °C (68 °F) ... 1.34 V
Caterpillar Information System:
307D, 311D, 312D, 313D, 315D, 318D, 319D, 320D, 323D, 324D, 325D, 326D, 328D, 329D, 330D, 336D, 340D, 345D, 349D, 374D, 390D and M325D Excavators Air Conditioning and Heating Air Conditioning E21 - Evaporator Sensor (Open Circuit)
307D, 311D, 312D, 313D, 315D, 318D, 319D, 320D, 323D, 324D, 325D, 326D, 328D, 329D, 330D, 336D, 340D, 345D, 349D, 374D, 390D and M325D Excavators Air Conditioning and Heating Air Conditioning E16 - Water Temperature Sensor (Short Circuit)
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307D, 311D, 312D, 313D, 315D, 318D, 319D, 320D, 323D, 324D, 325D, 326D, 328D, 329D, 330D, 336D, 340D, 345D, 349D, 374D, 390D and M325D Excavators Air Conditioning and Heating Air Conditioning E14 - Fresh Air Sensor (Short Circuit)
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