Troubleshooting › Body control system › Diagnosis
B2C0116-故障诊断 · T00607512

 B2C0116 - TroubleshootingB2C0116-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
B2C0116
Supply voltage is too low供电电压过低
1. 12V battery voltage is too low1.蓄电池电压过低
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 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 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。
④Check power liftgate module supply voltage检查电动掀背门模块供电电压
Graphic
1. The vehicle is powered on.车辆上电。
2. Use a digital multimeter to measure the voltage between pin 13 of the power liftgate module harness connector BD89 and ground.用数字万用表测量电动掀背门模块线束接插件BD89的13号针脚与接地之间的电压。
Standard voltage value: about 14V标准电压值：约14V
Graphic
c. Use a digital multimeter to measure the voltage between pin 3 of the electric liftgate module harness connector BD90 and ground.c.用数字万用表测量电动掀背门模块线束接插件BD90的3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 Inspect the power supply circuit to the power liftgate module.检修电动掀背门模块供电线路。
⑤Replacing the power liftgate module更换电动掀背门模块
1. Replace the electric hatchback door module with a new one and check whether the fault code and symptoms are eliminated.更换新的电动掀背门模块，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 electric liftgate module, you need to use a diagnostic tool to recalibrate the electric liftgate module.更换电动掀背门模块后，需用诊断仪对电动掀背门模块重新标定。