Electronic fan works abnormally电子风扇工作异常

①Check fuse检查保险丝
	1. Check whether the FAN fuse in the battery-positive fuse box is normal.检查正极电器盒中FAN保险丝是否正常。 FAN：60A Are the test results normal?检查结果是否正常？ Yes → Go to step 2.是>>去步骤2。 No → Replace the fuse with the same specification.否>>更换相同规格保险丝。
②Check relay检查继电器
	1. Check whether the fan relay ER09 in the front compartment electrical box is working properly.检查前舱电器盒中风扇继电器ER09是否工作正常。 Are the test results normal?检查结果是否正常？ Yes → Go to step 3.是>>去步骤3。 No → Replace the fan relay with the same specification.否>>更换相同规格风扇继电器。
③Check the wiring harness connector检查线束接插件
1. Check whether the thermal management integrated module wiring harness is damaged or broken.检查热管理集成模块线束是否存在损坏、断裂等现象。 2. Check whether the electronic fan wire harness is damaged or broken.检查电子风扇线束是否存在损坏、断裂等现象。 3. Check whether there are loose connections or damage to the thermal management integrated module harness connector.检查热管理集成模块线束接插件是否存在虚接、损坏等现象。 4. Check the electronic fan harness connector for loose connection or damage.检查电子风扇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 temperature control system fault code检查集成温控系统故障码
1. Use a diagnostic tool to read the fault code of the integrated temperature control system and check whether there is a fault related to the electronic fan.使用诊断仪读取集成温控系统故障码，检查是否存在电子风扇相关的故障。 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 electronic fan fault according to the fault code.否>>根据故障码排除电子风扇故障。
⑤Check electronic fan power circuit检查电子风扇电源线路
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. Pull out the fan relay ER09 in the electrical box in the front compartment.拔出前舱电器盒中风扇继电器ER09。 3. Disconnect electronic fan harness connector FB27.断开电子风扇线束接插件FB27。 4. Use a digital multimeter to measure the resistance between pin 2 of FB27 and pin 87 of the fan relay ER09 in the front compartment electrical box.用数字万用表测量FB27的2号针脚与前舱电器盒的风扇继电器ER09的87号针脚孔座之间的电阻。 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 6.是>>去步骤6。 No → Repair or replace the electronic fan power harness.否>>维修或更换电子风扇电源线束。
⑥Check electronic fan relay power circuit检查电子风扇继电器电源线路
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. Pull out the fan relay ER09 in the electrical box in the front compartment.拔出前舱电器盒中风扇继电器ER09。 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 30 of the fan relay ER09 in the front compartment electrical box and ground.用数字万用表测量前舱电器盒的风扇继电器ER09的30号针脚孔座与接地之间的电压。 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 7.是>>去步骤7。 No → Repair or replace the electronic fan relay power harness.否>>维修或更换电子风扇继电器电源线束。
⑦Check electronic fan ground circuit检查电子风扇接地线路
	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 electronic fan harness connector FB27.断开电子风扇线束接插件FB27。 3. Use a digital multimeter to measure the resistance between pin 3 of FB27 and ground.用数字万用表测量FB27的3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 electronic fan grounding harness.否>>维修或更换电子风扇接地线束。
⑧Check electronic fan relay ground wiring检查电子风扇继电器接地线路
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. Pull out the fan relay ER09 in the electrical box in the front compartment.拔出前舱电器盒中风扇继电器ER09。 3. Use a digital multimeter to measure the resistance between pin 86 of the fan relay ER09 in the front compartment electrical box and ground.用数字万用表测量前舱电器盒的风扇继电器ER09的86号针脚孔座与接地之间的电阻。 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 9.是>>去步骤9。 No → Repair or replace electronic fan relay ground harness.否>>维修或更换电子风扇继电器接地线束。
⑨Check the electronic fan LIN communication line检查电子风扇LIN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 electronic fan harness connector FB27 and thermal management integrated module harness connector FB43.断开电子风扇线束接插件FB27和热管理集成模块线束接插件FB43。 3. Use a digital multimeter to measure the resistance between pin 1 of FB27 and pin 8 of FB43.用数字万用表测量FB27的1号针脚与FB43的8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 10.是>>去步骤10。 No → Repair or replace the electronic fan LIN communication harness.否>>维修或更换电子风扇LIN通讯线束。
⑩Replace electronic fan更换电子风扇
1. Replace the electronic fan and check whether the fault is eliminated.更换电子风扇，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。