Troubleshooting › Air bag system › Diagnosis
B00211A-故障诊断 · T00607307

 B00211A - TroubleshootingB00211A-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
B00211A
Driver's side curtain air circuit resistance is too low驾驶员侧气帘回路阻值过低
1. The driver's side air curtain circuit resistance is too low1.驾驶员侧气帘回路阻值过低
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 left air curtain connector assembly is firm and reliable.检查左侧气帘接插件装配是否牢固、可靠。
Are the test results normal?检查结果是否正常？
Yes是 Go to step 2.去步骤2。
No否 Reconnect the left curtain air connector.重新连接左侧气帘接插件。
②Check the wiring harness from the airbag electronic control unit to the left air curtain检查安全气囊电控单元至左侧气帘之间的线束
Graphic
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. Disconnect the airbag electronic control unit harness connector BD52 and the left air curtain harness connector BD98.断开安全气囊电控单元线束接插件BD52和左侧气帘线束接插件BD98。
3. Use a digital multimeter to measure the resistance between pins 23 and 24 of the BD52.用数字万用表测量BD52的23号针脚与24号针脚之间的电阻。
Standard resistance value: >1M标准电阻值：＞1M Ω
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 Repair or replace the wiring harness from the airbag electronic control unit to the left curtain airbag.维修或更换安全气囊电控单元至左侧气帘之间的线束。
③Replace left side air curtain更换左侧气帘
1. Replace the left side air curtain with a new one and check whether the fault code and symptoms are eliminated.更换新的左侧气帘，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 4.去步骤4。
④Replace airbag electronic control unit更换安全气囊电控单元
1. Replace the airbag electronic control unit with a new one and check whether the fault code and symptoms are eliminated.更换新的安全气囊电控单元，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 airbag electronic control unit, you need to use a diagnostic tool to recalibrate the airbag electronic control unit.更换安全气囊电控单元后，需用诊断仪对安全气囊电控单元重新标定。