B1E1E1C - TroubleshootingB1E1E1C-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
B1E1E1C	There is a fault in the power supply circuit of the left front camera, and the circuit voltage is out of range.左前相机电源电路存在故障，电路电压超出范围	1. Camera power supply abnormality1.摄像头电源异常

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 12V battery voltage检查蓄电池电压

1. Power status is "OFF", disconnect the negative terminal of the 12V battery.电源状态“OFF”,断开蓄电池负极。 2. Use a digital multimeter to measure the voltage between the positive and negative terminals of the 12V battery.用数字万用表测量蓄电池正负极之间的电压。 Standard voltage value: about 12.5V标准电压值：约12.5V 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 Go to step 3.去步骤3。

③Check DCDC output voltage检查DCDC输出电压

1. The vehicle is powered on.车辆上电。 2. Use a digital multimeter to measure the voltage between the positive and negative terminals of the 12V battery.用数字万用表测量蓄电池正负极之间的电压。 Standard voltage value: about 14V标准电压值：约14V Are the test results normal?检查结果是否正常？ Yes是 Check the 12V battery.检修蓄电池。 No否 Inspect DCDC and its lines.检修DCDC及其线路。

④Check the power supply of the autonomous driving domain controller检查自动驾驶域控制器供电

1. Check whether the power supply of the autonomous driving domain controller is normal.检查自动驾驶域控制器供电是否正常。 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 Inspect the power supply line of the autonomous driving domain controller.检修自动驾驶域控制器供电线路。

⑤Replacing the left forward facing camera更换左侧前向摄像头

1. Replace the left forward camera with a new one and check whether the fault code and symptoms are eliminated.更换新的左侧前向摄像头，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。