P149001 - TroubleshootingP149001-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
P149001	Power-on initialization failure上电初始化故障	1. Precharge conditions are not met1.预充条件不满足

Troubleshooting steps故障诊断步骤

①Power on check上电检查

1. Power on the vehicle again and check whether the fault code and symptoms are eliminated.车辆重新上电，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 2.去步骤2。

②Check the integrated electric drive assembly检查集成电力驱动总成

1. Power status "OFF".电源状态“OFF”。 2. Connect the diagnostic tool.连接诊断仪。 3. Power status "ON".电源状态“ON”。 4. Use a diagnostic tool to check whether the integrated electric drive assembly is normal.用诊断仪检查集成电力驱动总成是否正常。 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 Overhaul the integrated electric drive assembly.检修集成电力驱动总成。

③Check the high-voltage battery system检查动力电池系统

1. Power status "OFF".电源状态“OFF”。 2. Connect the diagnostic tool.连接诊断仪。 3. Power status "ON".电源状态“ON”。 4. Use a diagnostic tool to check whether the high-voltage battery system is normal.用诊断仪检查动力电池系统是否正常。 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 the high-voltage battery system.检修动力电池系统。

④Check high voltage load检查高压负载

1. Check whether the high-voltage load and wiring harness are normal.检查高压负载及线束是否正常。 Are the test results normal?检查结果是否正常？ Yes是 Go to step 5.去步骤5。 No否 Repair or replace faulty parts.维修或更换故障零部件。

⑤Replace vehicle controller更换整车控制器

1. Replace the vehicle controller with a new one and check whether the fault code and symptoms are eliminated.更换新的整车控制器，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 vehicle controller, you need to use a diagnostic tool to recalibrate the vehicle controller.更换整车控制器后，需用诊断仪对整车控制器重新标定。