U044781 - TroubleshootingU044781-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
U044781	Invalid data received from gateway接收到网关的无效数据	1. The received message is inconsistent with the length or data range defined in the matrix table1.接收到的报文与矩阵表定义的长度或者数据范围不一致

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 BCAN communication harness is damaged or broken.检查BCAN通讯线束是否存在损坏、断裂等现象。 3. Check the BCAN communication harness connector for damage, loose connection, etc.检查BCAN通讯线束接插件是否存在损坏、虚接等现象。 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 faulty wiring harness or connector.维修或更换故障线束或接插件。

②Power 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 3.去步骤3。

③Check gateway检查网关

1. Check if the gateway is working properly.检查网关是否正常工作。 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 Overhaul the gateway system.检修网关系统。

④Replace the mobile phone wireless charging module更换手机无线充电模块

1. Replace with a new mobile phone wireless charging module and check whether the fault code and symptoms are eliminated.更换新的手机无线充电模块，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 mobile phone wireless charging module, you need to use a diagnostic tool to recalibrate the mobile phone wireless charging module.更换手机无线充电模块后，需用诊断仪对手机无线充电模块重新标定。