So, from the beginning about the marking of boxes, it is assumed that the reader has a general idea of the structure of the box on a front-wheel drive car.
In the first digits of the gearbox model (for example, C50, C52), which are usually used, including by suppliers of contract spare parts, only the “row” of the gearbox is encrypted. Those. only gear ratios.
This “abbreviated” name does not reflect the main pair of the box; information about the GP is contained in the additional code (type c50-12a). Those. To fully describe the box, a “full” code is needed.
For example, on ZHE16 boxes C52 were installed, BUT, of three subtypes! And they were all C52! Example - Box C52 was installed on - Corolla/Sprinter AE82 with ZHE16, - on AE92 with ZHE16 - on AE101 with ZHE, with GP 4.312 - on European Corolla AE92 with 4AF, with GP 4.13 - on Europe/America 7A-FE with a GP engine 4.058
You also need to take into account that the main pair cannot be changed “separately” on C-series boxes, because The drive sprocket is threaded onto the secondary shaft of the box.
Accordingly, to replace the GP, you need to replace the entire secondary shaft with all that it entails.
Additionally, it should be noted that the boxes removed from the Corona/Karina/Kaldina A21x bodies do not have a speed sensor.
Moreover, they do not have a plastic crown on the differential that this sensor rotates, and it can only be installed by disassembling the box.
So, what has been and can be done in general, not absolutely all options will be considered, but more or less realistic ones.
C50 (for 4A)
Actually C50, but with a different main pair. It was installed on Kingtails with 4A-FE engines. Incl. to Ceres/Marino/Levin/Trueno.
I don’t know the code of the box, I mean it was also called C50, BUT with different indexes at the end. Good for the city and acceleration, but for the highway IMHO not the best choice with the speed for the FE engine.
First gear 3.545 Second gear 1.904 Third gear 1.310 Fourth gear 0.969 Fifth gear 0.815 Reverse gear 3.250 Differential ratio 4.058
How to drive a Toyota with a robot
Recommendations for operating the transmission are listed in the manual supplied with the vehicle:
- avoid sudden accelerations that increase the load on the servos;
- when shocks occur, reduce engine speed;
- If the car gets stuck, you should not rock the car for a long time, alternately turning on the forward and reverse modes.
Possible problems with initialization
The clutch may not initialize the first time due to software errors in the controller or the use of a clutch from a manual transmission. The problem arose due to an error in the catalogs; spare parts suppliers offered the coupling as a budget replacement for the original unit. Due to the increased rigidity of the basket, the actuator cannot cope with the movement of the disk, which causes the learning process to end prematurely.
How to restore a problematic block
Some owners experience burnout of elements located inside the control unit. The problem can be solved by purchasing a new controller, but if you have the skills to install printed circuit boards and the appropriate equipment, you can try to restore the old one. One of the signs of failure of the control unit is error P0900, indicating a lack of power supply to the actuator (a gear icon appears in the instrument cluster).
At the initial stage, you need to try to remove the error. If the code is not erased, then you should check the presence of power at the corresponding contacts in the connector. If there is no signal, it is necessary to remove and disassemble the unit. Most often, the output transistors that supply power to the actuator control contacts fail. To solder elements, you need a hair dryer and a vacuum extractor to pump out solder. After installing new elements, you need to make sure there is no error and carry out the initialization procedure.
Corolla manual transmission goes into neutral
Spontaneous switching of the transmission to the neutral position, accompanied by the inclusion of a control indicator in the form of a gear in the instrument cluster, indicates a breakdown of the clutch drive. A scanner that is connected to the diagnostic connector will help determine the exact cause of the malfunction. When an incorrect operation of the mechanism is detected, an error with code P0810 is entered into the controller’s memory. The problem can be solved by rebuilding the old one or purchasing a new actuator, the service life of which is about 100 thousand km.
C51
It was installed on 21x and 11x bodies with a 5A motor, after modification, when the engines lost power and speed, but gained in torque.
3,4,5 gears are “higher”, which allows you to drive them at lower revs. This box is the best choice for those who drive a lot on the highway. Especially in 5th gear. (sorry, do you have the same one only with GP = 4.058? Let’s look...)
First gear 3.545 Second gear 1.904 Third gear 1.223 Fourth gear 0.885 Fifth gear 0.725 Reverse gear 3.250 Differential ratio 3.722
Gearbox robot
The unit is a standard manual transmission with a dry clutch, which is equipped with electromagnetic control drives. The actuator mounted on the crankcase receives signals from the control unit. The device opens and closes the clutch while simultaneously switching gears.
The robotic gearbox is cheaper than classic automatic transmissions and is inferior in smooth operation and reliability.
What is initialization
The procedure involves resetting the data stored in the memory of the control unit. The information returns to the factory settings; during programming, the controller records the drive strokes necessary to control the speed change drive.
After disassembling transmission units or installing a new gear selection mechanism, additional calibration is required.
Robot purpose
The design of the robotic gearbox of the E-150 generation Toyota Corolla uses an electrical mechanism connected to a control unit. Power drives allow you to switch gears automatically, simplifying the process of driving in dense city traffic. The controller is equipped with a diagnostic system; if a malfunction is detected, an error code is entered into the memory, and a warning indicator in the form of a gear is turned on in the instrument cluster.
The box design uses an electrical mechanism.
Functionality
The robotic transmission allows you to change gears without human intervention, and the adaptable control unit takes into account your driving style. Support for manual selection of steps has been implemented (using the selector), and there is a reverse travel mode. In 2005, an early version of the Freetronic gearbox with an automatic centrifugal clutch was introduced. Due to low reliability, the unit was quickly discontinued; the 2007 model year Corolla began using the Multimode option with a power-driven clutch.
Cxx (XZ)
The box was installed on Karina 190 with 7A, 4A - “poor” (as well as on some modifications with 5A, then on 5A there was C50)
Here.. This IMHO is already significantly better compared to the C50. The first two “greyhounds” are almost like those on the C50 for 4A, the 3rd is identical (including the main pair) to the C50 box from 5A, 4, 5 are high. I like the fifth 0.7 + GP almost 4.
Those. It also rips at the start, and the revs are lower on the highway.
First gear 3.545 Second gear 1.904 Third gear 1.233 Fourth gear 0.969 Fifth gear 0.725 Reverse gear 3.250 Differential ratio 3.941
C58
Stands on Kaldino 211 and 191 with 7A, on Korona Premio with 4A
This is exactly the kind of box I am looking for, if possible, for myself. Good GP for FE coupled with wonderful high gears. This box has a wider range than all other boxes for FE motors of the A series.
Although for a “drag” the third and fourth (if you have time to reach it on the FE) are a bit high. But then set from the SAME, although on the highway the speeds for FE will be too high.
First gear 3.545 Second gear 1.904 Third gear 1.233 Fourth gear 0.969 Fifth gear 0.725 Reverse gear 3.250 Differential ratio 4.058
But gentlemen, another STRANGE box, specially created for dredging on FE engines
