Troubleshooting › Cooling system › Diagnosis
B1C5109-故障诊断 · T00606729

 B1C5109 - TroubleshootingB1C5109-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
B1C5109
Evaporator electronic expansion valve EVA EXV motor coil open circuit蒸发器电子膨胀阀EVA EXV电机线圈开路
1. Valve body failure1.阀本体故障
Troubleshooting steps故障诊断步骤
①Power 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 2.去步骤2。
②Replace 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。