Electrical › Wiper and washing system › Diagnosis
前刮水器电机不工作 · T00611538

 Front wiper motor not working前刮水器电机不工作

①General inspection一般检查
1. Power status "OFF".电源状态“OFF”。
2. Connect the diagnostic tool.连接诊断仪。
3. Power status "ON".电源状态“ON”。
4. Use a diagnostic tool to read the fault code and check whether there is a fault.用诊断仪读取故障码，检查是否存在故障。
Check if there is a fault code?检查是否存在故障码？
Yes → Troubleshoot related faults according to the fault code.是>>根据故障码排除相关故障。
No → Go to step 2.否>>去步骤2。
②Check combination switch and clock spring assembly检查组合开关与时钟弹簧总成
1. Power status "OFF".电源状态“OFF”。
2. Connect the diagnostic tool.连接诊断仪。
3. Power status "ON".电源状态“ON”。
4. Use a diagnostic tool to read the fault code of the combination switch and clock spring assembly to check whether there is a fault.用诊断仪读取组合开关与时钟弹簧总成故障码，检查是否存在故障。
Check if there is a fault code?检查是否存在故障码？
Yes → Troubleshoot the fault of the combined switch and clock spring assembly according to the fault code.是>>根据故障码排除组合开关与时钟弹簧总成故障。
No → Go to step 3.否>>去步骤3。
③Check 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 and front wiper motor wiring harness for damage, breakage, etc.检查集成式车身控制模块和前刮水器电机线束是否存在损坏、断裂等现象。
3. Check whether the integrated body control module and front wiper motor wiring harness connectors are connected or damaged.检查集成式车身控制模块和前刮水器电机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 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 fuse EF17 in the electrical box in the front compartment is normal.检查前舱电器盒中保险丝EF17是否正常。
EF17：20A
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 relay检查继电器
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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 wiper relay 1 (ER11) and wiper relay 2 (ER12) are normal.检查刮水器继电器1(ER11)和刮水器继电器2(ER12)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 → Replace the relay with the same specifications.否>>更换相同规格继电器。
⑥Check wiper relay control wiring harness检查刮水器继电器控制线束
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. Unplug wiper relay 1 (ER11) and wiper relay 2 (ER12).拔下刮水器继电器1(ER11)和刮水器继电器2(ER12)。
3. Disconnect integrated body control module harness connector FB51.断开集成式车身控制模块线束接插件FB51。
4. Use a digital multimeter to measure the resistance between pin 25 of FB51 and pin 1 jack of wiper relay 2 (ER12).用数字万用表测量FB51的25号针脚与刮水器继电器2(ER12)的1号针脚插孔之间的电阻。
5. Use a digital multimeter to measure the resistance between pin 16 of FB51 and pin 1 jack of wiper relay 1 (ER11).用数字万用表测量FB51的16号针脚与刮水器继电器1(ER11)的1号针脚插孔之间的电阻。
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 wiper relay control harness.否>>维修或更换刮水器继电器控制线束。
⑦Check wiper relay ground harness检查刮水器继电器接地线束
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. Unplug wiper relay 2 (ER12).拔下刮水器继电器2(ER12)。
3. Use a digital multimeter to measure the resistance between wiper relay 2 (ER12) pin 4 jack and ground.用数字万用表测量刮水器继电器2(ER12)的4号针脚插孔与接地之间的电阻。
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 wiper relay ground harness.否>>维修或更换刮水器继电器接地线束。
⑧Check front wiper motor power supply检查前刮水器电机电源
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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 front wiper motor harness connector FB48.断开前刮水器电机线束接插件FB48。
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. Turn on the low speed wiper gear.开启雨刮低速挡。
5. Use a digital multimeter to measure the voltage between pin 2 of the FB48 and ground.用数字万用表测量FB48的2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. Turn on the wiper high speed gear.f.开启雨刮高速挡。
g. Use a digital multimeter to measure the voltage between pin 1 of FB48 and ground.g.用数字万用表测量FB48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 9.是>>去步骤9。
No → Repair or replace the front wiper motor power wiring harness.否>>维修或更换前刮水器电机电源线束。
⑨Check front wiper motor ground harness检查前刮水器电机接地线束
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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 front wiper motor harness connector FB48.断开前刮水器电机线束接插件FB48。
3. Use a digital multimeter to measure the resistance between pin 4 of the FB48 and ground.用数字万用表测量FB48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 10.是>>去步骤10。
No → Repair or replace the front wiper motor grounding harness.否>>维修或更换前刮水器电机接地线束。
⑩Replace front wiper motor更换前刮水器电机
1. Replace the front wiper motor and check whether the fault is eliminated.更换前刮水器电机，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 → Go to step 11.否>>去步骤11。
⑪Replacing 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。