B1E1914 - TroubleshootingB1E1914-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
B1E1914	The rear view camera is faulty and the circuit is shorted to ground or open.后视相机存在故障，电路对地短路或开路	1. Short circuit or open circuit failure in the power cord1.电源线短路或断路故障

Troubleshooting steps故障诊断步骤

①General inspection一般检查

1. Check the rear-facing camera wiring harness for damage, breakage, etc.检查后向摄像头线束是否存在损坏、断裂等现象。 2. Check whether there is any loose connection or damage to the wiring harness connector.检查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 the rear-facing camera LVDS communication cable检查后向摄像头LVDS通讯电缆

1. Check whether the LVDS communication cable of the rear-facing camera is normal.检查后向摄像头LVDS通讯电缆是否正常。 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 Repair or replace the rear-facing camera LVDS communication cable.维修或更换后向摄像头LVDS通讯电缆。

⑤Replace rear facing camera更换后向摄像头

1. Replace the rear-facing camera with a new one and check whether the fault code and symptoms are eliminated.更换新的后向摄像头，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 6.去步骤6。

⑥Replacing the autonomous driving domain controller更换自动驾驶域控制器

1. Replace with a new autonomous driving domain controller and check whether the fault code and symptoms are eliminated.更换新的自动驾驶域控制器，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 autonomous driving domain controller, you need to use a diagnostic tool to recalibrate the autonomous driving domain controller.更换自动驾驶域控制器后，需用诊断仪对自动驾驶域控制器重新标定。