B100812 - TroubleshootingB100812-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
B100812	Driver's seat belt buckle short circuit to power supply驾驶员安全带锁扣对电源短路	1. The driver's seat belt buckle is short-circuited to the power supply.1.驾驶员安全带锁扣对电源短路

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 the driver's seat belt buckle harness for damage, breakage, etc.检查主驾安全带扣线束是否存在损坏、断裂等现象。 3. Check whether the driver's seat belt buckle harness connector is damaged or broken.检查主驾安全带扣线束接插件是否存在损坏、断裂等现象。 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 Repair or replace the driver's seat belt buckle harness or connector.维修或更换主驾安全带扣线束或接插件。

②Check the driver's seat belt buckle circuit检查主驾安全带扣线路

1. Check whether the driver's seat belt buckle circuit is short-circuited to the power supply.检查主驾安全带扣线路是否对电源短路。 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 driver's seat belt buckle harness.维修或更换主驾安全带扣线束。

③Replace the driver's seat belt buckle更换主驾安全带扣

1. Replace the driver's seat belt buckle with a new one and check whether the fault code and symptoms are eliminated.更换新的主驾安全带扣，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。