Troubleshooting › Body control system › Diagnosis
B160016-故障诊断 · T00607483

 B160016 - TroubleshootingB160016-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
B160016
Low supply voltage供电电压低
1. Abnormal power supply wiring harness1.供电线束异常
2. The power supply module is abnormal2.供电模块异常
Troubleshooting steps故障诊断步骤
①Check the 12V battery voltage (take the left front door control module failure as an example)检查蓄电池电压(以报左前门控制模块故障为例)
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 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 its lines.检修DCDC及其线路。
③Check the power supply line of the left front door control module检查左前门控制模块供电线路
Graphic
1. The vehicle is powered on.车辆上电。
2. Use a multimeter to measure the voltage between pin 7 of the FL18 and ground.使用万用表测量FL18的7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 4.去步骤4。
No否 Inspect the power supply line of the left front door control module.检修左前门控制模块供电线路。
④Replace left front door control module更换左前门控制模块
1. Replace the left front door control module with a new one and check whether the fault code and symptoms are eliminated.更换新的左前门控制模块，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 left front door control module, you need to use a diagnostic tool to recalibrate the left front door control module.更换左前门控制模块后，需用诊断仪对左前门控制模块重新标定。