Troubleshooting › Car power supply/cigarette lighter › Diagnosis
B2E0016-故障诊断 · T00607420

 B2E0016 - TroubleshootingB2E0016-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
B2E0016
Undervoltage fault欠压故障
1. It is detected that the battery voltage is less than 8.5V1.检测到电池电压小于8.5V
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 multimeter to measure the voltage between the positive and negative terminals of the 12V battery.用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 multimeter to measure the voltage between the positive and negative terminals of the 12V battery.用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 Charge the 12V battery and replace it if necessary.对蓄电池进行充电，必要时更换蓄电池。
No否 Inspect DCDC and lines.检修DCDC及线路。
④Check the power supply line of the mobile phone wireless charging module检查手机无线充电模块供电线路
Graphic
1. The vehicle is powered on.车辆上电。
2. Use a multimeter to measure the voltage between pin 1/2 of CN03 and ground.使用万用表测量CN03的1/2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 Check the power supply line of the mobile phone wireless charging module.检修手机无线充电模块供电线路。
⑤Replace the mobile phone wireless charging module更换手机无线充电模块
1. Replace with a new mobile phone wireless charging module and check whether the fault code and symptoms are eliminated.更换新的手机无线充电模块，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 mobile phone wireless charging module, you need to use a diagnostic tool to recalibrate the mobile phone wireless charging module.更换手机无线充电模块后，需用诊断仪对手机无线充电模块重新标定。