B1E1017 - TroubleshootingB1E1017-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
B1E1017	There is a fault in the forward camera power supply and the circuit voltage is higher than the threshold.前向摄像头电源存在故障，电路电压高于门槛值	1. Abnormal power supply voltage1.电源电压异常

Troubleshooting steps故障诊断步骤

①Check 12V battery voltage检查蓄电池电压

1. Power state 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 Go to step 2.去步骤2。

②Check DCDC output voltage检查DCDC输出电压

1. Power status "ON".电源状态“ON”。 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 Discharge the 12V battery.对蓄电池进行放电。 No否 Inspect DCDC and its lines.检修DCDC及其线路。

③Replace lane departure warning ECU更换车道偏离预警ECU

1. Replace with a new lane departure warning ECU and check whether the fault code and symptoms are eliminated.更换新的车道偏离预警ECU，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 lane departure warning ECU, you need to use a diagnostic tool to recalibrate the lane departure warning ECU.更换车道偏离预警ECU后，需用诊断仪对车道偏离预警ECU重新标定。