Integrated body control module does not work集成式车身控制模块不工作

①General inspection一般检查
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 2.否>>去步骤2。
②Check 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 3.是>>去步骤3。 No → Repair or replace the faulty wiring harness or connector.否>>维修或更换故障线束或接插件。
③Check 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 fuses IF32, IF19 and IF02 in the electrical box on the instrument panel are normal.检查仪表板电器盒中保险丝IF32、IF19、IF02是否正常。 IF02：7.5A IF19：7.5A IF32：20A Are the test results normal?检查结果是否正常？ Yes → Go to step 4.是>>去步骤4。 No → Replace the fuse with the same specification.否>>更换相同规格保险丝。
④Check integrated body control module 12V battery power supply检查集成式车身控制模块蓄电池电源
	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 BD55.断开集成式车身控制模块线束接插件BD55。 3. Connect the negative terminal of the 12V battery and the power status is "ON".连接蓄电池负极，电源状态“ON”。 4. Use a digital multimeter to measure the voltage between pin A4 of the BD55 and ground.用数字万用表测量BD55的A4号针脚与接地之间的电压。 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 → Go to step 5.是>>去步骤5。 No → Repair or replace the integrated body control module battery power harness.否>>维修或更换集成式车身控制模块蓄电池电源线束。
⑤Check integrated body control module IG1 power supply检查集成式车身控制模块IG1电源
	1. Power status "ON".电源状态“ON”。 2. Use a digital multimeter to measure the voltage between pin 44 of FB51 and ground.用数字万用表测量FB51的44号针脚与接地之间的电压。 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 → Go to step 6.是>>去步骤6。 No → Repair or replace the integrated body control module IG1 power harness.否>>维修或更换集成式车身控制模块IG1电源线束。
⑥Check the integrated body control module ACC power supply检查集成式车身控制模块ACC电源
	1. Power status "ON".电源状态“ON”。 2. Use a digital multimeter to measure the voltage between pin 20 of the BD56 and ground.用数字万用表测量BD56的20号针脚与接地之间的电压。 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 → Go to step 7.是>>去步骤7。 No → Repair or replace the integrated body control module ACC power harness.否>>维修或更换集成式车身控制模块ACC电源线束。
⑦Check integrated body control module ground harness检查集成式车身控制模块接地线束
	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 integrated body control module harness connectors BD55 and FB51.断开集成式车身控制模块线束接插件BD55、FB51。 3. Use a digital multimeter to measure the resistance between pin A7 of the BD55 and ground.用数字万用表测量BD55的A7号针脚与接地之间的电阻。 Standard resistance value: <1标准电阻值：＜1 Ω
	d. Use a digital multimeter to measure the resistance between pin 5 of FB51 and ground.d.用数字万用表测量FB51的5号针脚与接地之间的电阻。 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 8.是>>去步骤8。 No → Repair or replace the integrated body control module ground harness.否>>维修或更换集成式车身控制模块接地线束。
⑧Replacing 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。