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P22934B-故障诊断 · T00612147

 P22934B - TroubleshootingP22934B-故障诊断

Fault code description故障码说明
DTC故障码(DTC)
Fault code description故障码描述
Possible cause of failure可能故障原因
P22934B
Power factor correction (PFC) unit overtemperature功率因数校正（PFC）单元过温
1. The coolant temperature is too high1.冷却液温度太高
2. Coolant flow rate is too low2.冷却液流速太低
3. Abnormal heating of MOS3.MOS异常发热
4. MOS temperature sensor is abnormal4.MOS温度传感器不正常
Troubleshooting steps故障诊断步骤
①Power on check上电检查
1. Repower the vehicle, use the diagnostic tool to read and clear the fault codes, and check whether the fault codes and symptoms are eliminated.车辆重新上电，使用诊断仪读取并清除故障码，检查故障码及症状是否排除。
Are the test results normal?检查结果是否正常？
Yes是 Fault resolved.故障排除。
No否 Go to step 2.去步骤2。
②Check ambient temperature检查环境温度
1. Check whether the ambient temperature is normal.检查环境温度是否正常。
2. Check for unusual heat sources near the vehicle.检查车辆附近是否存在异常热源。
Are the test results normal?检查结果是否正常？
Yes是 Go to step 3.去步骤3。
No否 Let the vehicle cool down in a suitable environment; if the fault persists, go to step 3.将车辆置于合适环境下静置冷却；若故障依然存在，去步骤3。
③Cooling check冷却检查
1. Let the vehicle cool down for 30 minutes and check whether the fault code and symptoms are eliminated.车辆静置冷却30分钟，检查故障码及症状是否排除。
Are the test results normal?检查结果是否正常？
Yes是 Fault resolved.故障排除。
No否 Go to step 4.去步骤4。
④Check coolant检查冷却液
1. Check whether the coolant level is within the normal scale range and whether the coolant is normal.检查冷却液液位是否在正常刻度范围，冷却液是否正常。
Are the test results normal?检查结果是否正常？
Yes是 Go to step 5.去步骤5。
No否 Add coolant that meets specifications.添加符合规格要求的冷却液。
⑤Check cooling system检查冷却系统
1. Check whether the cooling system is normal.检查冷却系统是否正常。
Are the test results normal?检查结果是否正常？
Yes是 Go to step 6.去步骤6。
No否 Check the cooling system.检修冷却系统。
⑥Replacing the integrated electric drive assembly更换集成电力驱动总成
1. Replace the integrated electric drive assembly with a new one and check whether the fault code and symptoms are eliminated.更换新的集成电力驱动总成，检查故障码及症状是否排除。
Are the test results normal?检查结果是否正常？
Yes是 Fault resolved.故障排除。
No否 Look for causes from other symptoms.从其他症状查找原因。
  Caution:注意：
♦  After replacing the integrated electric drive assembly, you need to use a diagnostic tool to recalibrate the integrated electric drive assembly.更换集成电力驱动总成后，需用诊断仪对集成电力驱动总成重新标定。