Integrated brake control unit does not work集成式制动控制单元不工作

①General inspection一般检查
1. Check whether the vehicle performs emergency braking, excessive or insufficient turning, starting on steep slopes, etc.检查车辆是否存在紧急制动、转弯过度或不足、陡坡起步等操作。 Yes → Go to step 2.是>>去步骤2。 No → Fault resolved.否>>故障排除。
②Check the mechanical components of the braking system检查制动系统机械部件
1. Check whether the brake fluid is sufficient.检查制动液是否充足。 2. Check the mechanical components of the braking system for damage, leakage, etc.检查制动系统机械部件是否存在损坏、泄漏等现象。 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 related faulty parts or add brake fluid.否>>检修相关故障部件或添加制动液。
③Check the wiring harness connector检查线束接插件
1. Check whether the integrated brake control unit wiring harness is damaged or broken.检查集成式制动控制单元线束是否存在损坏、断裂等现象。 2. Check the integrated brake control unit harness connector for loose connection or damage.检查集成式制动控制单元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 integrated brake control unit fault codes检查集成式制动控制单元故障码
1. Use a diagnostic tool to read the fault code of the integrated brake control unit and check whether there is a fault in the integrated brake control unit.使用诊断仪读取集成式制动控制单元故障码，检查集成式制动控制单元是否存在故障。 Are the test results normal?检查结果是否正常？ Yes → Go to step 10.是>>去步骤10。 No → If the fault code can be read, troubleshoot according to the fault code; if communication cannot be performed, go to step 5.否>>若能读取故障码，根据故障码排除故障；若不能进行通讯，去步骤5。
⑤Check CAN communication line检查CAN通讯线路
1. Check whether the CAN communication line of the integrated brake control unit is normal.检查集成式制动控制单元CAN通讯线路是否正常。 Are the test results normal?检查结果是否正常？ Yes → Go to step 6.是>>去步骤6。 No → Check the CAN communication line.否>>检修CAN通讯线路。
⑥Check 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. Open the electrical box in the front compartment and check whether the EF23 fuse is blown.打开前舱电器盒，检查EF23保险丝是否熔断。 EF23：60A
	c. Open the electrical box in the front compartment and check whether the EF48 fuse is blown.c.打开前舱电器盒，检查EF48保险丝是否熔断。 EF48：60A 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>>更换相同规格的保险丝。
⑦Check integrated brake control unit power supply circuit检查集成式制动控制单元电源线路
	1. Power status "ON".电源状态“ON”。 2. Use a digital multimeter to measure the voltage between pin 1/3 of the integrated brake control unit harness connector FB47 and ground.用数字万用表测量集成式制动控制单元线束接插件FB47的1/3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 brake control unit power wiring harness.否>>维修或更换集成式制动控制单元电源线束。
⑧Check the integrated brake control unit IG power supply circuit检查集成式制动控制单元IG电源线路
	1. Power status "ON".电源状态“ON”。 2. Use a digital multimeter to measure the voltage between pin 41 of the integrated brake control unit harness connector FB47 and ground.用数字万用表测量集成式制动控制单元线束接插件FB47的41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 9.是>>去步骤9。 No → Repair or replace the integrated brake control unit IG power supply harness.否>>维修或更换集成式制动控制单元IG电源线束。
⑨Check integrated brake control unit ground circuit检查集成式制动控制单元接地线路
	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 brake control unit harness connector FB47.断开集成式制动控制单元线束接插件FB47。 3. Use a digital multimeter to measure the resistance between pin 2/4 of FB47 and ground.用数字万用表测量FB47的2/4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 brake control unit grounding harness.否>>维修或更换集成式制动控制单元接地线束。
⑩Replacing the integrated brake control unit更换集成式制动控制单元
1. Replace with a new integrated brake control unit and check whether the fault is eliminated.更换新的集成式制动控制单元，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 brake control unit, you need to use a diagnostic tool to recalibrate the integrated brake control unit.更换集成式制动控制单元后，需用诊断仪对集成式制动控制单元重新标定。