P200719 - TroubleshootingP200719-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
P200719	Electronic fan overcurrent fault电子风扇过流故障	1. Fan overcurrent1.风扇过流

Troubleshooting steps故障诊断步骤

①General inspection一般检查

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 electronic fan wire harness for damage, breakage, loose connection, etc.检查电子风扇线束是否存在损坏、断裂、虚接等现象。 3. Check the electronic fan harness connector for loose connection or damage.检查电子风扇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是 Go to step 2.去步骤2。 No否 Repair or replace electronic fan harness or connector.维修或更换电子风扇线束或接插件。

②Check electronic fan controller检查电子风扇控制器

1. Check the electronic fan controller pins for short circuits.检查电子风扇控制器引脚是否有短路现象。 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 Replace the electronic fan.更换电子风扇。

③Replace electronic fan更换电子风扇

1. Replace the electronic fan with a new one and check whether the fault code and symptoms are eliminated.更换新的电子风扇，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。