P200994 - TroubleshootingP200994-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
P200994	ITS motor water pump power reductionITS电机水泵降功率	1. The working temperature of the motor water pump is too high1.电机水泵工作温度过高
		2. The antifreeze temperature is too low and the resistance is too high2.防冻液温度过低，阻力太大

Troubleshooting steps故障诊断步骤

①Check coolant temperature检查冷却液温度

1. Check whether the coolant temperature is too low and whether there is ice or other phenomena.检查冷却液温度是否过低，是否存在结冰等现象。 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 Replace with coolant that meets specifications.更换为符合规格要求的冷却液。

②Check motor water pump temperature检查电机水泵温度

1. Check whether the operating temperature of the motor and water pump is too high.检查电机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 3.去步骤3。 No否 Dissipate heat for the motor and water pump; if the fault persists, go to step 3.对电机水泵进行散热；若故障依旧，去步骤3。

③Replace motor water pump更换电机水泵

1. Replace the motor and water pump and check whether the fault code and symptoms are eliminated.更换电机水泵，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。