B1E0302 - TroubleshootingB1E0302-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
B1E0302	Communication with ADC_SOC lost, general signal failure与ADC_SOC通信丢失，一般信号故障	1. Electromagnetic compatibility issues1.电磁兼容性问题
		2. The autonomous driving domain controller node is offline2.自动驾驶域控制器节点离线
		3. The autonomous driving domain controller node is damaged.3.自动驾驶域控制器节点损坏

Troubleshooting steps故障诊断步骤

①Power 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 2.去步骤2。

②Check the automatic driving domain controller fault code检查自动驾驶域控制器故障码

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 3.去步骤3。 No否 Troubleshoot the autonomous driving domain controller based on the fault code.根据故障码排除自动驾驶域控制器故障。

③Check the Ethernet cable between the forward lidar and the autonomous driving domain controller检查前向激光雷达与自动驾驶域控制器之间的以太网电缆

1. Check whether the Ethernet cable is damaged or broken.检查以太网电缆是否存在损坏、断裂等现象。 2. Check whether the Ethernet cable connector is empty or damaged.检查以太网电缆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 4.去步骤4。 No否 Repair or replace the Ethernet cable or connector between the forward lidar and the autonomous driving domain controller.维修或更换前向激光雷达与自动驾驶域控制器之间的以太网电缆或接插件。

④Replacing forward-facing lidar更换前向激光雷达

1. Replace with a new forward-facing lidar and check whether the fault code and symptoms are eliminated.更换新的前向激光雷达，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 forward-facing lidar, you need to use a diagnostic tool to recalibrate the forward-facing lidar.更换前向激光雷达后，需用诊断仪对前向激光雷达重新标定。