The "change code" controlled by the transmission ECU is randomly selected by the engine electronic control unit and stored in the two electronic control units. If the “transformation code†sent by the anti-theft device matches the engine electronic control unit, the vehicle will be in an operable condition. At this time, the starter relay J1 and the ignition relay J2 are simultaneously pulled. When the engine is started, the start signal of the ignition switch is sent to the D-stone 0 terminal of the reversing relay J226 by the start relay Jl. When the transmission handle is in the non-in-gear state, the start contact in the start-up reversing relay J226 is closed. B-stone terminal Output 12V voltage to the starter, the starter starts working. If the vehicle is started with an illegal key, the engine electronic control unit will be blocked after the anti-theft system is identified, the starter relay and the ignition relay will be disconnected, and the starter will not work. If the power is directly applied to the starter No. 5O, the starter can run, but the engine cannot drive. In addition, for vehicles equipped with automatic cruise control, it is also used for speed regulation (not used by Jetta cars). If this signal is interrupted, the ECU assumes that the shift lever is in the D position and enters an emergency state. Checking with VA Stone 1551 will show that the multi-function switch F125 is unstable. After receiving the sensor information related to the gear shift, the electronic control unit JZ17 of the automatic transmission of the slide valve box calculates that the electromagnetic valve on the slide valve box will send out 7 solenoid valves. The role, type, and operating conditions of each solenoid valve are such that the seven solenoid valves do not control the clutch KZ and the brake Bl. They are controlled by a manual valve, the shift lever is operated at R, and the transmission is in a reverse gear. Of the seven solenoid valves, only the N8 and Ngo are powered off. This is because after the transmission electronic control unit JZ17 enters the emergency state, all the solenoid valves are powered off. At this time, the N88 and N90 work, that is, the KI and K3 work, and the transmission is at rest. 3 files. This is why, after the transmission enters an emergency state, the R position is still valid, and when the D position is engaged, the 3rd position is still started, and the reason why the 4th position cannot be engaged. In addition to the above seven solenoid valves, there are more than a dozen mechanical valves on the slide valve box. They respectively coordinate, regulate oil pressure and oil supply, pressure relief transformation, etc., do not have to investigate the repair personnel, transmission overhaul or refurbishment When you need to remove the cleaning, you can reinstall it in the original order. Steel Wire Rope,Galvanized Steel Wire Rope,Wirerope Steel Wire Rope,Hot Dip Galvanized Steel Yangzhou Jieerte Steel Cable Co., Ltd , https://www.yzwirerope.com