Troubleshooting › Driving and parking assistance systems › Diagnosis
U014087-故障诊断 · T00617275

 U014087 - TroubleshootingU014087-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
U014087
There is a fault in the CAN communication with IBCM and the message is lost.与IBCM CAN通信存在故障，报文丢失
1. IBCM working status is abnormal1.IBCM工作状态异常
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 whether the BCAN communication harness is damaged or broken.检查BCAN通讯线束是否存在损坏、断裂等现象。
3. Check the BCAN communication harness connector for loose connections or damage.检查BCAN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 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 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 IBCM fault code检查IBCM故障码
1. Use the diagnostic tool to read the IBCM fault code and check whether the integrated body control module is faulty.使用诊断仪读取IBCM故障码，检查集成式车身控制模块是否存在故障。
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 the integrated body control module according to the fault code.根据故障码排除集成式车身控制模块故障。
⑤Replacement of in-car surveillance radar更换车内监控雷达
1. Replace with a new in-car monitoring radar and check whether the fault code and symptoms are eliminated.更换新的车内监控雷达，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 in-vehicle monitoring radar, you need to use a diagnostic tool to recalibrate the in-vehicle monitoring radar.更换车内监控雷达后，需用诊断仪对车内监控雷达重新标定。