B370346 - TroubleshootingB370346-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
B370346	The INU sensor is faulty and the serial number before and after calibration is inconsistent.INU传感器存在故障，标定前后序列号不一致	1. Calibration error1.标定出错
		2. The calibration process does not correspond to the sensor2.标定流程与传感器不对应

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。

②Check installation location检查安装位置

1. Check whether the installation position of the combined inertial navigation module meets the requirements.检查组合惯性导航模块安装位置是否符合要求。 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 Reinstall as required.按要求重新安装。

③Check the integrated inertial navigation module fault code检查组合惯性导航模块故障码

1. Use a diagnostic tool to read the fault code of the integrated inertial navigation module and check whether there is a fault in the integrated inertial navigation module.使用诊断仪读取组合惯性导航模块故障码，检查组合惯性导航模块是否存在故障。 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 Troubleshoot the combined inertial navigation module fault according to the fault code.根据故障码排除组合惯性导航模块故障。

④Replacing the autonomous driving domain controller更换自动驾驶域控制器

1. Replace with a new autonomous driving domain controller and check whether the fault code and symptoms are eliminated.更换新的自动驾驶域控制器，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 autonomous driving domain controller, you need to use a diagnostic tool to recalibrate the autonomous driving domain controller.更换自动驾驶域控制器后，需用诊断仪对自动驾驶域控制器重新标定。