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①Power on check上电检查
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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。
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2. |
Check whether the PM2.5 sensor wiring harness is damaged or broken.检查PM2.5传感器线束是否存在损坏、断裂等现象。 |
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3. |
Check the PM2.5 sensor harness connector for loose connection or damage.检查PM2.5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？
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No否 |
Repair or replace the PM2.5 sensor wiring harness or connector.维修或更换PM2.5传感器线束或接插件。 |
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②Check 12V battery voltage检查蓄电池电压
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1. |
Power status is "OFF", disconnect the negative terminal of the 12V battery.电源状态“OFF”,断开蓄电池负极。
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2. |
Use a digital multimeter to measure the voltage between the positive and negative terminals of the 12V battery.用数字万用表测量蓄电池正负极之间的电压。
Standard voltage value: about 12.5V标准电压值：约12.5V
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Are the test results normal?检查结果是否正常？
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③Check DCDC output voltage检查DCDC输出电压
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1. |
The vehicle is powered on.车辆上电。
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2. |
Use a digital multimeter to measure the voltage between the positive and negative terminals of the 12V battery.用数字万用表测量蓄电池正负极之间的电压。
Standard voltage value: about 14V标准电压值：约14V
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Are the test results normal?检查结果是否正常？
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Yes是 |
Charge the 12V battery and replace it if necessary.对蓄电池进行充电，必要时更换蓄电池。 |
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No否 |
Inspect DCDC and its lines.检修DCDC及其线路。 |
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④Check PM2.5 sensor supply voltage检查PM2.5传感器供电电压
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1. |
Power on the vehicle and turn on the air conditioner.车辆上电，开启空调。
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2. |
Use a digital multimeter to measure the voltage between pin 1 of the thermal management integrated module harness connector FB44 and ground.用数字万用表测量热管理集成模块线束接插件FB44的1号针脚与接地之间的电压。
Standard voltage value: about 12V标准电压值：约12V
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Are the test results normal?检查结果是否正常？
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No否 |
Replace the thermal management integrated module.更换热管理集成模块。 |
Caution:注意： |
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♦
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After replacing the thermal management integrated module, you need to use a diagnostic instrument to recalibrate the thermal management integrated module.更换热管理集成模块后，需用诊断仪对热管理集成模块重新标定。 |
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⑤Check the voltage drop of the PM2.5 sensor power supply line检查PM2.5传感器供电线路电压降
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1. |
Power on the vehicle and turn on the air conditioner.车辆上电，开启空调。
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2. |
Use a digital multimeter to measure the voltage between pin 1 of the thermal management integrated module harness connector FB44 and pin 3 of the PM2.5 sensor harness connector IP28.用数字万用表测量热管理集成模块线束接插件FB44的1号针脚与PM2.5传感器线束接插件IP28的3号针脚之间的电压。
Standard voltage value: <0.4V标准电压值：＜0.4V
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Are the test results normal?检查结果是否正常？
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No否 |
Repair or replace the PM2.5 sensor power supply harness.维修或更换PM2.5传感器供电线束。 |
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⑥Replace PM2.5 sensor更换PM2.5传感器
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1. |
Replace the PM2.5 sensor with a new one and check whether the fault code and symptoms are eliminated.更换新的PM2.5传感器，检查故障码及症状是否排除。
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Are the test results normal?检查结果是否正常？
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Yes是 |
Fault resolved.故障排除。 |
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No否 |
Look for causes from other symptoms.从其他症状查找原因。 |
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B3C0116 - TroubleshootingB3C0116-故障诊断