P18041C - TroubleshootingP18041C-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
P18041C	IGN power supply abnormalityIGN供电异常	1.IGN power supply abnormality1.IGN供电异常

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 whether the integrated electric drive assembly wiring harness is damaged or broken.检查集成电力驱动总成线束是否存在损坏、断裂等现象。 3. Check the integrated electric drive assembly wiring harness connector for loose connection or damage.检查集成电力驱动总成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 integrated electric drive assembly wiring harness or connector.维修或更换集成电力驱动总成线束或接插件。

②Check fuse检查保险丝

1. Check whether the IGN power supply fuse of the integrated electric drive assembly is normal.检查集成电力驱动总成IGN供电保险丝是否正常。 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 fuse with the same specification.更换相同规格的保险丝。

③Check the integrated electric drive assembly IGN power supply line检查集成电力驱动总成IGN供电线路

1. Check whether the IGN power supply line of the integrated electric drive assembly is open or short-circuited.检查集成电力驱动总成IGN供电线路是否断路、短路。 Are the test results normal?检查结果是否正常？ Yes是 Go to step 4.去步骤4。 No否 Repair or replace the integrated electric drive assembly IGN power supply harness.维修或更换集成电力驱动总成IGN供电线束。

④Replacing 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。