Troubleshooting › Audio entertainment system › Diagnosis
B110016-故障诊断 · T00617206

 B110016 - TroubleshootingB110016-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
B110016
External 12V battery voltage is too low外部蓄电池电压过低
1.Battery power supply problem1.电池供电问题
Troubleshooting steps故障诊断步骤
①Power on check上电检查
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. Check whether the infotainment head unit wiring harness is damaged or broken.检查车载智能多媒体主机线束是否存在损坏、断裂等现象。
3. Check whether there are loose connections or damage to the infotainment head unit wiring harness connector.检查车载智能多媒体主机线束接插件是否存在虚接、损坏等现象。
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 the power supply voltage of the vehicle infotainment head unit检查车载智能多媒体主机供电电压
1. Check whether the power supply voltage of the infotainment head unit is normal.检查车载智能多媒体主机供电电压是否正常。
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 and repair the power supply line of the infotainment head unit.检修车载智能多媒体主机供电线路。
⑤Replacement of infotainment head unit更换车载智能多媒体主机
1. Replace with a new infotainment head unit and check whether the fault code and symptoms are eliminated.更换新的车载智能多媒体主机，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 infotainment head unit, it is necessary to use a diagnostic instrument to recalibrate the infotainment head unit.更换车载智能多媒体主机后，需用诊断仪对车载智能多媒体主机重新标定。