Troubleshooting › Driving and parking assistance systems › Diagnosis
B380017-故障诊断 · T00612001

 B380017 - TroubleshootingB380017-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
B380017
There is a fault in the ADC power circuit and the circuit voltage is higher than the threshold valueADC电源电路存在故障，电路电压高于门槛值
1. Abnormal voltage of power supply system1.供电系统电压异常
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 3.去步骤3。
No否 Discharge the 12V battery.对蓄电池进行放电。
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 Go to step 4.去步骤4。
No否 Inspect DCDC and its lines.检修DCDC及其线路。
④Check the power supply voltage of the autonomous driving domain controller检查自动驾驶域控制器供电电压
1. Check whether the power supply voltage of the autonomous driving domain controller is normal.检查自动驾驶域控制器供电电压是否正常。
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 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。