Diagnosis and testing诊断与测试
Check检查
| 1. | Operate the vehicle to reproduce the fault, and then confirm the problem reported by the customer.操作车辆使故障再现，再确认顾客反映的问题 |
| 2. | Visual inspection to see if obvious causes of failure can be found目视检查是否能发现明显的故障原因 |
| 3. | If visual inspection or the customer's description of the problem reveals an obvious cause, fix it (if possible) before proceeding to the next step.如果目视检查或根据顾客所叙述的问题发现到明显原因，则在执行下一步骤前先将它修复(如果可能) |
| 4. | Road tests and customer descriptions provide appropriate information to help identify the problem and provide direction to begin proper diagnosis.路试和客户详述提供了能帮助确认问题的相应信息，并为开始正确诊断提供了方向 |
| 5. | If the problem still exists after inspection, troubleshoot according to the fault symptoms如果问题在检查后仍然存在，则根据故障现象进行排除 |
Confirm the problem确认问题
| 1. | Noise, vibration and harshness usually occur in 3 areas:噪音、震动与不平顺通常发生在3个区域：
|
| 2. | Problems with noise, vibration and roughness should be identified as quickly as possible. The easiest and quickest way is to do a road test. Use appropriate approved noise, vibration and harshness diagnostic detectors to support diagnostic and testing procedures应尽快确定噪音、震动与不平顺的问题发生部位。最简单快捷的方法就是进行路试。使用适当的许可的噪音、震动与不平顺诊断检测器为诊断和测试程序提供支持 |