U015187 - TroubleshootingU015187-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
U015187	There is a communication failure with the SRS and the message is lost.与SRS通讯存在故障，报文丢失	1. Loss of communication with airbag system1.与安全气囊系统丢失通信

Troubleshooting steps故障诊断步骤

①General inspection一般检查

1. Check whether the CAN communication harness is damaged or broken.检查CAN通讯线束是否存在损坏、断裂等现象。 2. Check the CAN communication harness connector for loose connections or damage.检查CAN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 faulty communication harness.维修或更换故障通讯线束。

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 airbag system检查安全气囊系统

1. Check whether the airbag system is normal.检查安全气囊系统是否正常。 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 Overhaul the airbag system.检修安全气囊系统。

⑤Check the gateway controller fault code检查网关控制器故障码

1. Use a diagnostic tool to read the fault code of the gateway controller and check whether there is a fault in the gateway controller.使用诊断仪读取网关控制器故障码，检查网关控制器是否存在故障。 Are the test results normal?检查结果是否正常？ Yes是 Go to step 6.去步骤6。 No否 Troubleshoot the gateway controller based on the fault code.根据故障码排除网关控制器故障。

⑥Check the Autopilot Domain Controller检查自动驾驶域控制器

1. Use a diagnostic tool to read the fault code of the autonomous driving domain controller and check whether there is a fault on the autonomous driving domain controller.使用诊断仪读取自动驾驶域控制器故障码，检查自动驾驶域控制器是否存在故障。 Are the test results normal?检查结果是否正常？ Yes是 Go to step 7.去步骤7。 No否 Troubleshoot according to the fault code.根据故障码排除故障。

⑦Replace the main sensor for blind spot monitoring更换盲区监测主传感器

1. Replace the main blind spot monitoring sensor with a new one and check whether the fault code and symptoms are eliminated.更换新的盲区监测主传感器，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 Look for causes from other symptoms.从其他症状查找原因。   Caution:注意： ♦  After replacing the main sensor for blind spot monitoring, you need to use a diagnostic instrument to recalibrate the main sensor for blind spot monitoring.更换盲区监测主传感器后，需用诊断仪对盲区监测主传感器重新标定。