Electric door locks are not working电动门锁都不工作

①Check 12V battery charge检查蓄电池电量
1. Check whether the 12V battery power is too low.检查蓄电池电量是否过低。 Are the test results normal?检查结果是否正常？ Yes → Go to step 2.是>>去步骤2。 No → Charge the battery and replace the battery if necessary.否>>对蓄电池进行充电，必要时更换蓄电池。
②Check fault codes检查故障码
1. Power status "OFF".电源状态“OFF”。 2. Connect the diagnostic tool.连接诊断仪。 3. Power status "ON".电源状态“ON”。 4. Use a diagnostic tool to read the fault code and check whether there is a fault.用诊断仪读取故障码，检查是否存在故障。 Check if there is a fault code?检查是否存在故障码？ Yes → Troubleshoot related faults according to the fault code.是>>根据故障码排除相关故障。 No → Go to step 3.否>>去步骤3。
③Check the wiring harness connector检查线束接插件
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 integrated body control module wiring harness for damage, breakage, etc.检查集成式车身控制模块线束是否存在损坏、断裂等现象。 3. Check the integrated body control module wiring harness connector for loose connections or damage.检查集成式车身控制模块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 → Go to step 4.是>>去步骤4。 No → Repair or replace the faulty wiring harness or connector.否>>维修或更换故障线束或接插件。
④Check fuse检查保险丝
	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 fuse IF31/IF33 in the electrical box on the instrument panel is normal.检查仪表板电器盒中保险丝IF31/IF33是否正常。 IF31：20A IF33：20A Are the test results normal?检查结果是否正常？ Yes → Go to step 5.是>>去步骤5。 No → Replace the fuse with the same specification wire.否>>更换线相同规格保险丝。
⑤Check door lock power检查门锁电源
	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 integrated body control module harness connector FB51.断开集成式车身控制模块线束接插件FB51。 3. Connect the negative terminal of the 12V battery.连接蓄电池负极。 4. Use a digital multimeter to measure the voltage between pin 8/11 of FB51 and ground.用数字万用表测量FB51的8/11号针脚与接地之间的电压。 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 → Go to step 6.是>>去步骤6。 No → Repair or replace the door lock power wiring harness.否>>维修或更换门锁电源线束。
⑥Check the lock signal harness检查锁止信号线束
	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 integrated body control module harness connector BD55 and the left front door lock harness connector FL21.断开集成式车身控制模块线束接插件BD55与左前门锁线束接插件FL21。 3. Use a digital multimeter to measure the resistance between pin A2 of BD55 and pin 5 of FL21.用数字万用表测量BD55的A2号针脚与FL21的5号针脚之间的电阻。 Standard resistance value: <1标准电阻值：＜1 Ω Are the test results normal?检查结果是否正常？ Yes → Go to step 7.是>>去步骤7。 No → Repair or replace the lock signal wiring harness.否>>维修或更换锁止信号线束。
⑦Replacing the integrated body control module更换集成式车身控制模块
1. Replace the integrated body control module and check whether the fault is eliminated.更换集成式车身控制模块，检查故障是否排除。 Are the test results normal?检查结果是否正常？ Yes → Fault resolved.是>>故障排除。 No → Find the cause from other fault symptoms.否>>从其他故障现象查找原因。   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。