Troubleshooting › Cooling system › Diagnosis
B1C5309-故障诊断 · T00606727

 B1C5309 - TroubleshootingB1C5309-故障诊断

Fault code description故障码说明
DTC故障码(DTC)
Fault code description故障码描述
Possible cause of failure可能故障原因
B1C5309
Evaporator electronic expansion valve EVA motor stall failure蒸发器电子膨胀阀EVA电机堵转故障
1. The refrigerant pipeline is blocked by impurities and foreign matter1.冷媒管路杂质异物堵塞
2. Valve body failure2.阀本体故障
Troubleshooting steps故障诊断步骤
①Check refrigerant pipeline检查冷媒管路
1. Check whether the refrigerant pipeline is blocked by impurities or foreign matter.检查冷媒管路是否有杂质异物堵塞。
Are the test results normal?检查结果是否正常？
Yes是 Go to step 2.去步骤2。
No否 Refill the refrigerant and eliminate impurities in the pipeline.重新加注冷媒，排除管路杂质。
②Power on check上电检查
1. Repower the vehicle, use the diagnostic tool to read and clear the fault codes, and check whether the fault codes and symptoms are eliminated.车辆重新上电，使用诊断仪读取并清除故障码，检查故障码及症状是否排除。
Are the test results normal?检查结果是否正常？
Yes是 Fault resolved.故障排除。
No否 Go to step 3.去步骤3。
③Replace the evaporator electronic expansion valve更换蒸发器电子膨胀阀
1. Replace the evaporator electronic expansion valve with a new one, and check whether the fault code and symptoms are eliminated.更换新的蒸发器电子膨胀阀，检查故障码及症状是否排除。
Are the test results normal?检查结果是否正常？
Yes是 Fault resolved.故障排除。
No否 Look for causes from other symptoms.从其他症状查找原因。