P200A4B - TroubleshootingP200A4B-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
P200A4B	ITS battery water pump over temperature failureITS电池水泵过温故障	1. The battery water pump is overheated1.电池水泵过温

Troubleshooting steps故障诊断步骤

①Check battery water pump temperature检查电池水泵温度

1. Check whether the battery water pump operating temperature is too high.检查电池水泵工作温度是否过高。 Are the test results normal?检查结果是否正常？ Yes是 Go to step 2.去步骤2。 No否 Dissipate heat to the battery water pump; if the fault persists, go to step 2.对电池水泵进行散热；若故障依旧，去步骤2。

②Check Thermal Management Integrated Module Temperature检查热管理集成模块温度

1. Check whether the temperature of the thermal management integrated module is too high.检查热管理集成模块温度是否过高。 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 Dissipate heat from the thermal management integrated module; if the fault persists, go to step 3.对热管理集成模块进行散热；若故障依旧，去步骤3。

③Replace battery water pump更换电池水泵

1. Replace the battery water pump and check whether the fault code and symptoms are eliminated.更换电池水泵，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。

④Replacing the thermal management integrated module更换热管理集成模块

1. Replace the thermal management integrated module with a new one and check whether the fault code and symptoms are eliminated.更换新的热管理集成模块，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 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。