Forward radar not working (L2+)前向雷达不工作(L2+)

①General inspection一般检查
1. Check whether the forward radar surface is dirty or blocked by foreign objects.检查前向雷达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.否>>清洁表面。
②Check the wiring harness connector检查线束接插件
1. Check the forward radar wiring harness for damage, breakage, etc.检查前向雷达线束是否存在损坏、断裂等现象。 2. Check the forward radar harness connector for loose connection or damage.检查前向雷达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 EF14 in the electrical box in the front compartment is normal.检查前舱电器盒中保险丝EF14是否正常。 EF14：7.5A 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 forward radar power line检查前向雷达电源线路
	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 forward radar harness connector FP13.断开前向雷达线束接插件FP13。 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 the forward radar harness connector FP13 and ground.用数字万用表测量前向雷达线束接插件FP13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 forward radar power harness.否>>维修或更换前向雷达电源线束。
⑥Check the forward radar ground circuit检查前向雷达接地线路
	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 forward radar harness connector FP13.断开前向雷达线束接插件FP13。 3. Use a digital multimeter to measure the resistance between pin 4 of FP13 and ground.用数字万用表测量FP13的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 7.是>>去步骤7。 No → Repair or replace the forward radar ground harness.否>>维修或更换前向雷达接地线束。
⑦Check the CAN communication line between the forward radar and the autonomous driving domain controller检查前向雷达与自动驾驶域控制器之间的CAN通讯线路
	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 forward radar harness connector FP13 and the autonomous driving domain controller harness connector BD71.断开前向雷达线束接插件FP13和自动驾驶域控制器线束接插件BD71。 3. Use a digital multimeter to measure the resistance between pins 2/3 of FP13 and pins 28/27 of BD65.用数字万用表测量FP13的2/3号针脚与BD65的28/27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 8.是>>去步骤8。 No → Repair or replace the CAN communication harness between the forward radar and the autonomous driving domain controller.否>>维修或更换前向雷达与自动驾驶域控制器之间的CAN通讯线束。
⑧Replace forward radar更换前向雷达
1. Replace the forward radar and check whether the fault is eliminated.更换前向雷达，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 forward radar, the forward radar needs to be calibrated.更换前向雷达后，需对前向雷达进行标定。