Troubleshooting › Drive motor › Diagnosis
U041281-故障诊断 · T00612086

 U041281 - TroubleshootingU041281-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
U041281
OBC received BMS invalid dataOBC接收到BMS无效数据
1. Connector open circuit1.连接器开路
2. Wiring harness open/short circuit2.线束开路/短路
3. The bus is disturbed3.总线受到干扰
4. Random hardware failure of network nodes4.网络节点随机硬件失效
Troubleshooting steps故障诊断步骤
①General inspection一般检查
1. Check whether the ECAN communication harness is damaged or broken.检查ECAN通讯线束是否存在损坏、断裂等现象。
2. Check the ECAN communication harness connector for loose connections or damage.检查ECAN通讯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 the ECAN communication harness or connector.维修或更换ECAN通讯线束或接插件。
②Power on check上电检查
1. Power on the vehicle again and check whether the fault code and symptoms are eliminated.车辆重新上电，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 for electromagnetic interference检查电磁干扰
1. Check for sources of magnetic fields around the vehicle.检查车辆周围是否存在磁场源。
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 Move the vehicle away from its current environment.使车辆驶离当前环境。
④Check the battery pack fault code检查电池组箱故障码
1. Use a diagnostic tool to read the battery pack fault code and check whether there is a fault code in the battery pack.使用诊断仪读取电池组箱故障码，检查电池组箱是否存在故障码。
Are the test results normal?检查结果是否正常？
Yes是 Go to step 5.去步骤5。
No否 Troubleshoot according to the fault code.根据故障码排除故障。
⑤Replacing the integrated electric drive assembly更换集成电力驱动总成
1. Replace the integrated electric drive assembly with a new one and check whether the fault code and symptoms are eliminated.更换新的集成电力驱动总成，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 integrated electric drive assembly, you need to use a diagnostic tool to recalibrate the integrated electric drive assembly.更换集成电力驱动总成后，需用诊断仪对集成电力驱动总成重新标定。