P183421 - TroubleshootingP183421-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
P183421	Resolver L2 sin/cos input signal amplitude is too low fault旋转变压器L2 sin/cos输入信号幅值过低故障	1. The cable is broken and the connector is disconnected1.线缆断裂，连接器断开
		2. Poor welding2.焊接不良
		3. Condensation3.凝露
		4. The insulation between the motor resolver cables is damaged.4.电机旋变线缆间绝缘破损
		5. Random hardware failure5.随机硬件失效
		6. Resolver winding short circuit6.旋转变压器绕组短路
		7. Bias reference power supply failure caused by other reasons7.其他原因引起的偏置参考电源失效

Troubleshooting steps故障诊断步骤

①Power on check上电检查

1. Repower the vehicle, use the diagnostic tool to read and clear the fault codes, and check whether the fault codes and symptoms are eliminated.车辆重新上电，使用诊断仪读取并清除故障码，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。

②Replacing 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。