Troubleshooting › Body control system › Diagnosis
B111217-故障诊断 · T00607681

 B111217 - TroubleshootingB111217-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
B111217
RLS overvoltageRLS过压
1. There is a problem with the source node1.源节点出问题
2. Whether the LIN line is short-circuited or short-circuited to power or ground.2.LIN线路是否发生短接或短路电源、地的故障情况
3. Is there strong electromagnetic interference around the ECU that affects LIN communication?3.ECU周边是否存在影响LIN通信的强电磁干扰
4. It may be that the BCM itself is faulty4.可能是BCM本身故障
Troubleshooting steps故障诊断步骤
①General inspection一般检查
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 rain light sensor wiring harness is damaged or broken.检查雨量光线传感器线束是否存在损坏、断裂等现象。
3. Check whether there is a loose connection or damage to the rain light sensor harness connector.检查雨量光线传感器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 Go to step 4.去步骤4。
No否 Repair or replace faulty wiring harness or connector.维修或更换故障线束或接插件。
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 Discharge the 12V battery.对蓄电池进行放电。
No否 Inspect DCDC and its lines.检修DCDC及其线路。
④Replace the rain light sensor更换雨量光线传感器
1. Replace the rain light sensor with a new one and check whether the fault code and symptoms are eliminated.更换新的雨量光线传感器，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 Go to step 5.去步骤5。
⑤Replacing the integrated body control module更换集成式车身控制模块
1. Replace with a new integrated body control module and check whether the fault code and symptoms are eliminated.更换新的集成式车身控制模块，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 integrated body control module, you need to use a diagnostic tool to recalibrate the integrated body control module.更换集成式车身控制模块后，需用诊断仪对集成式车身控制模块重新标定。