B210017 - TroubleshootingB210017-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
B210017	There is a fault in the 12V battery voltage and the circuit voltage is higher than the threshold value蓄电池电压存在故障，电路电压高于门槛值	1. The voltage is higher than the upper limit of diagnostic voltage1.电压高于诊断电压上限

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 and replace it if necessary.对蓄电池进行放电，必要时更换蓄电池。
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 line of the parking sensor controller IG1检查倒车雷达控制器IG1电源线路
	1. Power on the vehicle and turn on the parking sensor function.车辆上电，开启倒车雷达功能。 2. Use a digital multimeter to measure the voltage between pin 14 of the parking sensor controller harness connector RB06 and ground.用数字万用表测量倒车雷达控制器线束接插件RB06的14号针脚与接地之间的电压。 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 5.去步骤5。 No否 Repair or replace the parking sensor controller IG1 power harness.维修或更换倒车雷达控制器IG1电源线束。
⑤Replace the parking sensor controller更换倒车雷达控制器
1. Replace the parking sensor controller with a new one and check whether the fault code and symptoms are eliminated.更换新的倒车雷达控制器，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 parking sensor controller, you need to use a diagnostic tool to recalibrate the parking sensor controller.更换倒车雷达控制器后，需用诊断仪对倒车雷达控制器重新标定。