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濟南奧迪汽車專修為大家講解常見汽車故障維修方法

來源:http://www.pxhecheng.com發布時間:2021-08-24 20:59:44

濟南奧迪汽車專修為大家講解常見汽車故障維修方法:
Jinan Audi Auto workshop will explain the maintenance methods of common automobile faults:
一.緊急警報燈閃爍并伴隨門鎖鎖鈕跳動車型:奧迪A6(1.8L)行駛時間:一個月故障現象:打開點火開關后,遇險警報燈閃爍,同時車門鎖鎖鈕有自動跳動現象故障診斷及排除:經檢查腳墊處有水漬,掀開腳墊發現中央門鎖控制單元被水浸泡,如圖1所示,由此判斷是由于水浸而造成中央門鎖控制單元受損,發出錯誤信號從而導致上述故障的發生。腳墊下進水的原因是發動機罩開啟拉索所經過的前圍板上的孔密封不嚴,在下雨或洗車過程中,水由此進入駕駛室內。曬干腳墊,并更換中央門鎖控制單元后,故障排除。
1、 The emergency alarm light flashes and the door lock button jumps. Model: Audi A6 (1.8L) driving time: one month fault phenomenon: after turning on the ignition, the distress alarm light flashes and the door lock button jumps automatically. Fault diagnosis and Troubleshooting: after checking that there are water stains at the foot pad, lift the foot pad and find that the central door lock control unit is soaked in water, as shown in Figure 1, Therefore, it is judged that the central door lock control unit is damaged due to flooding and sends an error signal, resulting in the occurrence of the above fault. The reason for water ingress under the footrest is that the hole on the cowl panel through which the hood opening cable passes is not tightly sealed, and water enters the cab during rain or car washing. After drying the footrest and replacing the central locking control unit, the fault is eliminated.
二、發動機有異響,轉向沉重車型:奧迪A6(1.8L)行駛時間:半個月(未上牌)故障現象:起動后發動機工作有異響,并伴隨有轉向沉重故障診斷及排除:打開發動機艙蓋,注意到異響來自于轉向助力泵,同時發現轉向助力液油罐內缺油,表明轉向系統泄漏。轉向機漏油,更換轉向機,故障排除。
2、 The engine makes abnormal noise, and the steering is heavy: Audi A6 (1.8L) driving time: half a month (without license plate) fault phenomenon: the engine makes abnormal noise after starting, accompanied by heavy steering fault diagnosis and Troubleshooting: open the engine compartment cover, note that the abnormal noise comes from the steering assist pump, and find that there is a lack of oil in the steering assist fluid tank, indicating that the steering system is leaking. The steering gear leaks oil. Replace the steering gear and eliminate the fault.
三、車速表指針擺動過大車型:奧迪A6(1.8L)故障現象:隨著車速的提高,車速表指針擺動較大故障診斷及排除:影響車速表指針擺動大的主要因素有:儀表本身、傳動齒輪、車速傳感器或線路故障等。
3、 Models with excessive speedometer pointer swing: Audi A6 (1.8L) fault phenomenon: with the increase of vehicle speed, the speedometer pointer swings greatly. Fault diagnosis and Troubleshooting: the main factors affecting the speedometer pointer swing are: instrument itself, transmission gear, speed sensor or circuit fault, etc.
首先用VAS5051檢查電控系統故障記憶,無故障,然后,在車輛行駛狀態下,用VAS5051檢查傳感器信號,發現VAS5051顯示的信號與儀表一致,因此判定儀表沒有問題。在對線路進行檢查,也未發現故障,檢查傳動齒輪,發現傳動齒輪未安裝好,重新安裝后,試車正常,故障排除。
Firstly, check the fault memory of the electronic control system with vas5051, and there is no fault. Then, when the vehicle is running, check the sensor signal with vas5051. It is found that the signal displayed by vas5051 is consistent with the instrument, so it is determined that there is no problem with the instrument. After checking the line, no fault was found. Check the transmission gear and find that the transmission gear is not installed properly. After reinstallation, the test run is normal and the fault is eliminated.


四、離合器異響車型:奧迪A6(1.8L)故障現象:離合器有異響,有時踏下離合器踏板后響聲加重故障診斷及排除:根據故障現象及異響發生的部位,判斷離合器內部有摩擦的地方,將離合器及飛輪拆下后,對元件的摩擦情況進行分析,發現是隔板上端沒有裝入槽內所造成,重新安五、里程表不工作車型:奧迪A6(1.8L)行駛里程:1200公里故障診斷及排除:此車開始時,車速表偶爾不走,幾天后,車速表指針再也不動了,初步懷疑是車速表傳感器故障??筛鼡Q了幾個車速表傳感器后,故障依舊。檢查儀表及線路都正常,最后懷疑是變速箱內部原因。將變速箱左半軸端蓋拆下,發現與里程表傳感器相對應的塑料傳動齒輪斷裂,更換后故障消除。故障原因可能是由于塑料傳動齒輪質量不好或裝配不當,造成早期損壞。
4、 Clutch abnormal noise model: Audi A6 (1.8L) fault phenomenon: the clutch makes abnormal noise, and sometimes the noise increases after stepping on the clutch pedal. Fault diagnosis and Troubleshooting: judge the friction inside the clutch according to the fault phenomenon and the position where the abnormal noise occurs. After removing the clutch and flywheel, analyze the friction of components, It was found that the upper end of the diaphragm was not installed in the slot. Re install v. odometer inoperative model: Audi A6 (1.8L) mileage: 1200 km fault diagnosis and Troubleshooting: at the beginning of the car, the speedometer occasionally didn't go. A few days later, the speedometer pointer didn't move anymore. It is preliminarily suspected that the speedometer sensor is faulty. After replacing several speedometer sensors, the fault remains. Check that the instrument and circuit are normal. Finally, it is suspected that it is the internal cause of the transmission. After removing the left half shaft end cover of the transmission, it was found that the plastic transmission gear corresponding to the odometer sensor was broken. After replacement, the fault was eliminated. The failure may be caused by poor quality or improper assembly of plastic drive gears, resulting in early damage.damage.

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