1、报涡轮转速传感器故障码

1. Report turbine speed sensor fault code

722.9变速箱出现故障，多数都是报涡轮转速传感器故障码。变速箱会进入紧急模式，变速箱锁在2档。多数情况客户熄火发动机，等待几分钟后重新启动发动机后又恢复正常。通常都是更换电脑来解决问题。

722.9 Transmission malfunctions are mostly reported as turbine speed sensor fault codes. The transmission will enter emergency mode and lock in second gear. In most cases, customers turn off the engine, wait for a few minutes, and then restart the engine before returning to normal. Usually, the problem is solved by replacing the computer.

2、变速箱拆开油底壳后发现大量的铁削。

2. After disassembling the oil pan of the gearbox, a large amount of iron chips were found.

这是由于质量问题。后排行星架磨损，有极少的是由于液力变矩器内部磨损造成，更换改良配件后可以解决问题。

This is due to quality issues. The wear of the rear planetary carrier is rarely caused by internal wear of the hydraulic torque converter. Replacing and improving the parts can solve the problem.

3、波箱和发动机连接处漏油，挂档后不走。

3. There is oil leakage at the connection between the gearbox and the engine, and it does not move after shifting gears.

由于波箱油泵质量问题，油泵上铜套松旷或抱死到变矩器轴颈上，还有油泵凸齿被打断，更换损坏的改良配件才能完全解决问题。

Due to quality issues with the gearbox oil pump, the copper sleeve on the oil pump is loose or stuck to the torque converter shaft neck, and the pump teeth are broken. It is necessary to replace the damaged and improved parts to completely solve the problem.

4、2档降1档有冲击，电脑检测无故障码。

4. Downshifting from 2nd gear to 1st gear has an impact, and the computer has detected no fault codes.

用电脑看换挡数据发现B1的冲油时间变短，超过-15ms。正常都不会超过正负10ms，DAS电脑给的数据是正负20ms。通常先对变速箱和发动机电脑做升级，然后做换挡学习，做换挡学习必须要根据DAS电脑提供的发动机转速和扭矩做。如果问题还没有解决则需解体变速箱，看制动器B1的卡簧是否脱落。

Looking at the shift data on the computer, it was found that the flushing time of B1 became shorter, exceeding -15ms. Normally, it will not exceed plus or minus 10ms. The data provided by the DAS computer is plus or minus 20ms. Usually, the gearbox and engine computer are upgraded first, followed by gear shifting learning. Gear shifting learning must be based on the engine speed and torque provided by the DAS computer. If the problem has not been resolved, the gearbox needs to be disassembled to see if the retaining ring of brake B1 has come off.

5、进D/R档冲击，跑起来正常，电脑检测无故障码。

5. Enter the D/R gear for impact, run normally, and the computer detects no fault codes.

首先对变速箱和发动机电脑升级，然后根据DAS电脑指引做变矩器学习。

Firstly, upgrade the transmission and engine computer, and then follow the DAS computer instructions to learn the torque converter.

本文由济南自动变速箱维修整理发布，您是不是对这些内容有所了解了呢?更多的内容请点击:http://www.jnbsx.com我们会有更多精彩内容等你查看

This article is organized and published by Jinan Automatic Transmission Maintenance. Do you have any understanding of these contents? For more information, please click on: http://www.jnbsx.com We will have more exciting content waiting for you to view