B1C7F71 - TroubleshootingB1C7F71-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
B1C7F71	Front blower stalled前鼓风机堵转	1. Motor stuck1.电机卡滞

Troubleshooting steps故障诊断步骤

①Check blower blades and motor检查鼓风机扇叶和电机

1. Check the blower blades for any foreign matter stuck.检查鼓风机扇叶是否有异物卡滞。 2. Check if there is any foreign matter stuck inside the blower motor.检查鼓风机电机内部是否有异物卡滞。 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 Clean up foreign objects.清理异物。

②Power on check上电检查

1. Repower the vehicle, turn on the air conditioner, use the diagnostic tool to read and clear the fault code, and check whether the fault code and symptoms are eliminated.车辆重新上电，打开空调，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 blower更换鼓风机

1. Replace the blower with a new one and check whether the fault code and symptoms are eliminated.更换新的鼓风机，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 4.去步骤4。

④Replacing the thermal management integrated module更换热管理集成模块

1. Replace the thermal management integrated module with a new one and check whether the fault code and symptoms are eliminated.更换新的热管理集成模块，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。   Caution:注意： ♦  After replacing the thermal management integrated module, you need to use a diagnostic instrument to recalibrate the thermal management integrated module.更换热管理集成模块后，需用诊断仪对热管理集成模块重新标定。