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集成式车身控制模块控制的灯光都异常 · T00611520

 The lights controlled by the integrated body control module are abnormal集成式车身控制模块控制的灯光都异常

①Check 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 2.是>>去步骤2。
No → Repair or replace the faulty wiring harness or connector.否>>维修或更换故障线束或接插件。
②Check the vehicle infotainment head unit fault code检查车载智能多媒体主机故障码
1. Use the diagnostic tool to read the fault code of the infotainment head unit and check whether there is a fault in the infotainment head unit.使用诊断仪读取车载智能多媒体主机故障码，检查车载智能多媒体主机是否存在故障。
Are the test results normal?检查结果是否正常？
Yes → Go to step 3.是>>去步骤3。
No → Troubleshoot the fault of the vehicle-mounted intelligent multimedia host according to the fault code.否>>根据故障码排除车载智能多媒体主机故障。
③Check the touch control screen检查触摸控制屏
1. Check whether the touch control screen is working properly.检查触摸控制屏是否工作正常。
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 touch control screen.否>>更换触摸控制屏。
④Check the combination switch and clock spring assembly fault code检查组合开关与时钟弹簧总成故障码
1. Use a diagnostic tool to read the fault code of the combination switch and clock spring assembly, and check whether there is a fault in the combination switch and clock spring assembly.使用诊断仪读取组合开关与时钟弹簧总成故障码，检查组合开关与时钟弹簧总成是否存在故障。
Are the test results normal?检查结果是否正常？
Yes → Go to step 5.是>>去步骤5。
No → Troubleshoot the fault of the combined switch and clock spring assembly according to the fault code.否>>根据故障码排除组合开关与时钟弹簧总成故障。
⑤Check integrated body control module fault codes检查集成式车身控制模块故障码
1. Use the diagnostic tool to read the fault code of the integrated body control module and check whether there is a fault in the integrated body control module.使用诊断仪读取集成式车身控制模块故障码，检查集成式车身控制模块是否存在故障。
Are the test results normal?检查结果是否正常？
Yes → Go to step 6.是>>去步骤6。
No → Troubleshoot the integrated body control module fault according to the fault code.否>>根据故障码排除集成式车身控制模块故障。
⑥Check fuse检查保险丝
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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 IF02/IF19/IF32/IF40/IF42 in the electrical box on the instrument panel are normal.检查仪表板电器盒中保险丝IF02/IF19/IF32/IF40/IF42是否正常。
IF02：7.5A
IF19：7.5A
IF32：20A
IF40：20A
IF42：20A
Are the test results normal?检查结果是否正常？
Yes → Go to step 7.是>>去步骤7。
No → Replace the fuse with the same specification.否>>更换相同规格保险丝。
⑦Check integrated body control module power supply检查集成式车身控制模块电源
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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/BD55/BD56.断开集成式车身控制模块线束接插件FB51/BD55/BD56。
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
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e. Use a digital multimeter to measure the voltage between pin 44 of FB51 and ground.e.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
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f. Use a digital multimeter to measure the voltage between pin 20 of BD56 and ground.f.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 8.是>>去步骤8。
No → Repair or replace the integrated body control module power harness.否>>维修或更换集成式车身控制模块电源线束。
⑧Check the integrated body control module lighting power harness检查集成式车身控制模块灯光电源线束
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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/BD55.断开集成式车身控制模块线束接插件FB51/BD55。
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 A5 of the BD55 and ground.用数字万用表测量BD55的A5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
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e. Use a digital multimeter to measure the voltage between pin 4 of FB51 and ground.e.用数字万用表测量FB51的4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 9.是>>去步骤9。
No → Repair or replace the integrated body control module lighting power harness.否>>维修或更换集成式车身控制模块灯光电源线束。
⑨Check integrated body control module ground harness检查集成式车身控制模块接地线束
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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/BD55.断开集成式车身控制模块线束接插件FB51/BD55。
3. Use a digital multimeter to measure the resistance between pin 5 of FB51 and ground.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
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d. Use a digital multimeter to measure the resistance between pin A7 of BD55 and ground.d.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
Are the test results normal?检查结果是否正常？
Yes → Go to step 10.是>>去步骤10。
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。
⑩Replacing 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。