论文部分内容阅读
故障现象一辆2013年产奥迪A1车,累计行驶里程约为3.5万km,因左前部发生碰撞进厂维修,维修后试车,无转向助力,转向沉重。故障诊断用故障检测仪检测,44—动力转向控制单元内无故障代码存储;检查悬架,未见明显异常。该车装备电动液压转向助力系统,查看维修资料得知,在以下2种特殊情况下,转向助力功能会被限制。(1)有碰撞信号时的功能限制。在收到安全气囊控制单元的碰撞信号后,转向泵会被关闭,同时存储故障代码,转向助力警报灯点亮。转向助力一直处于关闭状态,直
Symptom A car made in 2013 with a total mileage of about 35,000 km was struck by entering the factory on the left front and testing after maintenance. There was no steering assistance and heavy steering. Fault detection with fault detector detection, 44-power steering control unit without fault code storage; check the suspension, no obvious abnormalities. The car is equipped with electro-hydraulic power steering assistance system, view maintenance information that, in the following two special cases, steering power function will be limited. (1) Function limitations when there is a collision signal. After receiving the collision signal of the airbag control unit, the steering pump will be closed and the fault code will be stored. The steering assistive warning light will turn on. Steering power has been in the closed state, straight