In our daily life, the car is to be maintained and tested, so how to deal with the problem of the odometer in the normal maintenance or repair? Today, let's listen to Jinan automatic transmission maintenance company to introduce the reasons for this:

　　一、故障原因分析:

　　1、 Failure cause analysis:

　　可能是里程表指針和液晶計(jì)數(shù)系統(tǒng)不工作，但發(fā)動機(jī)正常，換擋正常。當(dāng)儀器組件連接線拆下未拔下時，返回找到速度信號終端，用模擬信號發(fā)生器驅(qū)動，指針顯示里程，計(jì)數(shù)器工作。安裝舊儀器進(jìn)行測試是正常的。初步判斷儀表總成無故障。故障應(yīng)在速度傳感器或信號線上。接下來，尋找速度傳感器。查閱數(shù)據(jù)，這個傳感器應(yīng)該是三線霍爾速度傳感器，但我沒有看到這個傳感器在引擎室。在這一點(diǎn)上，我很困惑。由于該車配備了CAN總線系統(tǒng)，所以我不知道速度信號是針對ABS系統(tǒng)，自動傳動系統(tǒng)還是發(fā)動機(jī)系統(tǒng)。

　　It may be that the odometer pointer and LCD counting system are not working, but the engine is normal and the shift is normal. When the connecting line of the instrument component is removed and not unplugged, return to find the speed signal terminal, drive it with the analog signal generator, display the mileage with the pointer, and the counter works. It is normal to install old instruments for testing. Preliminarily judge whether the instrument assembly has any fault. The fault should be on the speed sensor or signal line. Next, look for the speed sensor. Looking up the data, this sensor should be a three-wire Hall speed sensor, but I didn't see this sensor in the engine room. At this point, I am confused. Since the car is equipped with CAN bus system, I don't know whether the speed signal is for ABS system, automatic transmission system or engine system.

　　2檢查步驟(維護(hù)過程):

　　2 inspection steps (maintenance process):

　　從儀表盤上沿檢測到的速度信號線，到線束直接連接到發(fā)動機(jī)的電腦號上。9頭。發(fā)動機(jī)的計(jì)算機(jī)出問題了嗎?再次檢查發(fā)動機(jī)計(jì)算機(jī)終端9的速度輸出信號線。該電路被發(fā)現(xiàn)進(jìn)入儀表板，駕駛側(cè)多通道傳輸裝置，巡航系統(tǒng)和防抱死系統(tǒng)。依次嘗試斷開設(shè)備中的速度信號線。發(fā)現(xiàn)巡航系統(tǒng)藍(lán)白線斷開時，儀表盤速度指示器顯示正常。到目前為止，故障點(diǎn)已經(jīng)在巡航計(jì)算機(jī)上找到。巡航計(jì)算機(jī)的損壞直接影響速度信號的輸出。這時司機(jī)想起汽車的巡航系統(tǒng)不工作了，沒有修好。因此，斷開巡航計(jì)算機(jī)的藍(lán)線和白線，從發(fā)動機(jī)計(jì)算機(jī)的輸出速度信號線。重新安裝車輛，恢復(fù)舊的組合儀表。

　　From the speed signal line detected on the instrument cluster, connect the harness directly to the computer number of the engine. 9 heads. Is there something wrong with the engine computer? Check the speed output signal line of engine computer terminal 9 again. The circuit was found to enter the instrument panel, the driver side multichannel transmission, the cruise system and the anti lock system. In turn, try to disconnect the speed signal line in the device. It is found that when the blue white line of the cruise system is disconnected, the instrument cluster speed indicator shows normal. So far, the fault point has been found on the cruise computer. The damage of cruise computer directly affects the output of speed signal. At this time, the driver remembered that the cruise system of the car was not working and had not been repaired. Therefore, disconnect the blue line and the white line of the cruise computer, and output the speed signal line from the engine computer. Refit the vehicle and restore the old instrument cluster.

　　以上就是濟(jì)南自動變速箱維修公司為您介紹的自動變速器維修里程表問題分析及維護(hù)方面的知識，希望對您有所幫助，如有疑問歡迎致電我公司。

　　The above is the problem analysis and maintenance knowledge of automatic transmission maintenance odometer introduced by Jinan automatic transmission maintenance company. I hope it can help you. If you have any questions, please call our company.