Blind spot monitoring does not work (L2)盲区监测不工作(L2)

①General inspection一般检查
1. Check whether the surface where the blind spot monitoring main sensor is installed is too dirty or blocked by foreign objects.检查盲区监测主传感器安装位置表面是否过脏或被异物遮挡。 Are the test results normal?检查结果是否正常？ Yes → Go to step 2.是>>去步骤2。 No → Clean the surface of the installation location.否>>清洁安装位置表面。
②Check the wiring harness connector检查线束接插件
1. Check the blind spot monitoring main sensor wiring harness for damage, breakage, etc.检查盲区监测主传感器线束是否存在损坏、断裂等现象。 2. Check the blind spot monitoring main sensor harness connector for loose connections or damage.检查盲区监测主传感器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 CAN communication system检查CAN通讯系统
1. Check whether the CAN communication system is normal.检查CAN通讯系统是否正常。 Are the test results normal?检查结果是否正常？ Yes → Go to step 4.是>>去步骤4。 No → Troubleshoot the CAN communication system.否>>排除CAN通讯系统故障。
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 IF49 in the electrical box on the instrument panel is normal.检查仪表板电器盒中保险丝IF49是否正常。 IF49：10A 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.否>>更换相同规格保险丝。
⑤Check the power line of the main sensor for blind spot monitoring (take the main sensor for left blind spot monitoring as an example)检查盲区监测主传感器电源线路(以左盲区监测主传感器为例)
	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 left rear blind spot monitoring main sensor harness connector RB04.断开左后盲区监测主传感器线束接插件RB04。 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 1 of RB04 and ground.用数字万用表测量RB04的1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 dead zone monitoring main sensor power supply harness.否>>维修或更换盲区监测主传感器电源线束。
⑥Check the grounding line of the main sensor for blind spot monitoring (take the main sensor for left blind spot monitoring as an example)检查盲区监测主传感器接地线路(以左盲区监测主传感器为例)
	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 left rear blind spot monitoring main sensor harness connector RB04.断开左后盲区监测主传感器线束接插件RB04。 3. Use a digital multimeter to measure the resistance between pin 4/8 of RB04 and ground.用数字万用表测量RB04的4/8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 7.是>>去步骤7。 No → Repair or replace the dead zone monitoring main sensor grounding harness.否>>维修或更换盲区监测主传感器接地线束。
⑦Replace the main sensor for blind spot monitoring更换盲区监测主传感器
1. Replace the main sensor for blind spot monitoring and check whether the fault is eliminated.更换盲区监测主传感器，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 main sensor for blind spot monitoring, the main sensor for blind spot monitoring needs to be calibrated.更换盲区监测主传感器后，需对盲区监测主传感器进行标定。