B1C0715 - TroubleshootingB1C0715-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
B1C0715	The co-pilot air-mix (blend door) motor feedback line is short-circuited to the battery副驾混风电机反馈线对电池短路	1. The potential feedback line of the air-mix (blend door) servo motor on the passenger side is open or short-circuited to the battery.1.副驾侧混风伺服电机电位反馈线开路或者短路到电池

Troubleshooting steps故障诊断步骤

①General inspection一般检查
1. Power state is "OFF", disconnect the negative terminal of the 12V battery.电源状态“OFF”，断开蓄电池负极。 2. Check the right hybrid actuator wiring harness for damage, breakage, etc.检查右混合执行器线束是否存在损坏、断裂等现象。 3. Check the right hybrid actuator harness connector for loose connection or damage.检查右混合执行器线束接插件是否存在虚接、损坏等现象。 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 Repair or replace faulty wiring harness or connector.维修或更换故障线束或接插件。
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。
③Check right mix actuator feedback line检查右混合执行器反馈线路
	1. Power state is "OFF", disconnect the negative terminal of the 12V battery.电源状态“OFF”，断开蓄电池负极。 2. Disconnect the right hybrid actuator harness connector AC13 and the thermal management integrated module harness connector FB44.断开右混合执行器线束接插件AC13和热管理集成模块线束接插件FB44。 3. Connect the negative terminal of the 12V battery and the power status is "ON".连接蓄电池负极，电源状态“ON”。 4. Use a digital multimeter to measure the voltage between pin 34 of FB44 and ground.用数字万用表测量FB44的34号针脚与接地之间的电压。 Standard voltage value: about 0V标准电压值：约0V Are the test results normal?检查结果是否正常？ Yes是 Go to step 4.去步骤4。 No否 Repair or replace the right mixture actuator feedback harness.维修或更换右混合执行器反馈线束。
④Replace right mix actuator更换右混合执行器
1. Replace the right mix actuator with a new one and check whether the fault code and symptoms are eliminated.更换新的右混合执行器，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 5.去步骤5。
⑤Replacing 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。