P200813 - TroubleshootingP200813-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
P200813	Electronic fan relay enable line open circuit电子风扇继电器使能线开路	1. The fan relay enable line is disconnected1.风扇继电器使能线断开
		2. The enable line is in poor contact with the ITS controller connector.2.使能线与ITS控制器接插件接触不良

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 thermal management integrated module wiring harness for damage, breakage, loose connection, etc.检查热管理集成模块线束是否存在损坏、断裂、虚接等现象。 3. Check whether there are loose connections or damage to the thermal management integrated module harness connector.检查热管理集成模块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 the thermal management integrated module harness or connector.维修或更换热管理集成模块线束或接插件。

②Check the fan relay enable circuit检查风扇继电器使能线路

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. Open the electrical box in the front compartment and pull out the fan relay ER09.打开前舱电器盒，拔出风扇继电器ER09。 3. Disconnect the thermal management integrated module harness connector FB43.断开热管理集成模块线束接插件FB43。 4. Use a digital multimeter to measure the resistance between pin 7 of the FB43 and jack 85 on the fan relay base.用数字万用表测量FB43的7号针脚与风扇继电器底座的85号插孔之间的电阻。 Standard resistance value: <1标准电阻值：＜1 Ω 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 Repair or replace the fan relay enable harness.维修或更换风扇继电器使能线束。

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。