Over the years typical problems with MMT (Multidrive) Toyota Corolla is gaining more and more popularity. Toyota Motors admitted its mistakes in models with MMT, which are the "disease" of the robotic gearbox. If you have already encountered such a problem, or the feeling while driving gives you the idea that it will soon be time to repair the actuator, then you need to understand and learn how to properly perform the entire update process. Toyota Corolla 2008 actuator repair photo report will help you visually understand all the "subtlety" and complexity of the renewal of MMT elements.

Mechanical transmission "Multimode" is developed on the basis of 5 step box gears with the addition of two automatic drives- actuators. The first actuator performs the function of a clutch drive, and the second is a gear selection and shift drive. These drives are controlled by the TCM or ECU. This system ensures uninterrupted automatic operation clutch. TCM and ECU control all control modes of the box, and in case of errors they give out corresponding signals.

The actuator for Toyota Corolla 2008 is not a successful experiment for developers. This problem with MMT drive wear has affected many Corolla owners. But not everything is as scary as it seems. Before replacing the actuator, you need to identify the problem and figure out how to solve this issue easier and more economically.

Perhaps the most common problem is the lack of "help at start", then - "jerks and bumps when switching speeds", as well as "clutch overheating". As for jerks, then automatic transmission, or rather the ECU electronics, adapts to the driver's driving style. Therefore, it is very difficult to notice any malfunctions in the actuator. It is very easy to detect overheating of the clutch: there is not a pleasant smell of burning, and even the “red gear” lights up on the panel accompanied by an audible signal, and the box periodically freezes in the “N” position.

If the most common error p0810 occurs, it is strongly not recommended to independently initialize the computer. You can reset all settings (supposedly reboot them), but this will entail a lot of unwanted damage. In any case, the initialization of the ECU is prohibited!

Consequences that will negatively affect the initialization of the computer:

1. Increased clutch wear, since the ECU will update all its data, and will not take into account disc wear. The ECU will also install new point reference, respectively, we get dissimilarities in the operation of the clutch disc.
2. With increased wear, the probability of all deviations associated with MMT increases. The speed of disk movement is slowed down, which will subsequently lead to an unwanted error p0810.
3. The last stage of clutch disc wear will lead to a partial failure of the ECU. Your vehicle will not move or best case traffic will be very difficult.

Toyota Corolla 2006-2008 equipped with MMT 89530-12290. This is probably the most imperfect actuator that has ever been installed on a data model. Therefore, the owners Toyota Corolla 2006-2008 most often face difficulties in the operation of MMT.

If you've bought a used car and don't know what version of ECU you have, all you need to do is remove the lower glove compartment. When viewed from the driver's side, the number will be visible on the body shell.

Toyota Corolla actuator repair

Complete clutch actuator replacement expensive pleasure. Therefore, it is recommended to repair the Toyota Corolla actuator with your own hands.

More on the topic:

The first stage of preparation is a clutch test. We accelerate the car to 50-60 kilometers / hour, switch to manual mode and turn on the fifth speed. At the same time, we press the gas to the “floor”, if the movement of the tachometer needle coincides with the speedometer needle, then the clutch is most likely in in perfect order. After this check, we proceed directly to the repair.

Definition of MMT errorToyota Corolla

We stop the car, put it in the "N" position, then turn off the ignition and parking brake. Using the SST "clip", we connect the TC and CG pins of the DLC3 block (as in the photo). Take your foot off the brake pedal when you turn on the ignition. The diagnostic system will start (all the lights on the panel will blink). If any errors occur, the “red gear” will blink at regular intervals. If there are no problems, then it will blink without long intervals.

How to remove the actuator Toyota Corolla?

In order to get to the actuator, we need to remove the battery and the platform under it. Then we disconnect the chips from the sensor and the actuator motor. Directly remove the actuator itself (it is necessary to unscrew 3 bolts).

The first thing to do is to disconnect the engine from the mechanism. Most often, there is a lot of dust and dirt inside that needs to be cleaned. We check the brushes, if necessary, we make a replacement (if the length is less than three millimeters). To determine whether it is gentle to change the motor or not, inspect all wiring (it must be fresh, without plaque and not a pleasant smell of burning).

Actuator disassemblyToyota Corolla

When the drive is in our hands, we begin to disassemble its elements. Unscrew the sensor fasteners with a Phillips screwdriver (be sure to remember the position in which it is placed). Under the sensor there is a plate with antennae, (nuts on the six) must be unscrewed. Then, so that our process would go to right direction, you need to set the position of the stem. To do this, take a screwdriver and twist the rotating element in the groove where the drive motor is located. Thus, you will begin to adjust the stem. We expose it to the position of the most compressed inwards.

Now you can unscrew all the bolts in a circle and open the cover. To pull out the drive rod, unwind it and take it out. We remove the lubricant and clean the entire block. We make diagnostics of all elements and identify problems. The easiest way is to pull the spring and assemble (for testing) the entire test kit. Most often this is bushing wear or a problem with the drive itself. But everyone is different, it is necessary to identify the causes of the malfunction individually.

When assembling, we replace the lubricant ( temperature characteristics oils -40°С to +250°С). We perform the reverse procedure to collect all the elements of the actuator.

When the actuator is fully assembled, set the stem to the maximum position outward and do the “turn” by half a turn. We install the sensor on the antennae and turn it clockwise so that the holes of the element bolts coincide with the body. The clutch fork is well processed universal grease and install the drive with a gap of 5 - 9 millimeters. Next, we install the chips on the engine and drive sensor, then install the cover and the battery itself.

Performing this procedure at first glance will not seem like an easy process. Perhaps the first time it will be difficult and not clear. But you will gain experience and know your car better. Moreover, when you install the Toyota Corolla clutch actuator repair kit yourself, it will save money and bring you a little closer to knowing the car.

Clutch Position AdjustmentToyota Corolla

After turning on the ignition within three seconds, make at least seven presses on the brake pedal. After that, the buzzer should give two short beeps. While depressing the brake pedal, move the gear lever in the following sequence: N→E→M→+→M→+→M→+→M→+→M→E→N.

Release the pedal and wait 5-10 seconds. Then hold the brake again. The buzzer will sound sound signal- this will mean adjusting the position of the clutch clamp. Release the brake again, then press it again - the buzzer will beep twice. While holding the brake pedal, move the gearbox position to "-" and release the brake. Switch off the ignition and wait about ten seconds. Now you can disconnect the TC and CG pins in the DLC3 block. This completes the clutch adjustment.

Video: TOYOTA Corolla MMT Clutch Actuator Upgrade

Please rate the article

Do-it-yourself clutch actuator repair Toyota Corolla

Repairing the clutch actuator on a Corolla, in particular replacing the motor brushes, is not very difficult process. At the very beginning, it is worth saying that the worn motor brushes, so to speak, are a disease of these servos. So if you have a situation where the car got on the road due to a gear reset to neutral, the first thing to check is the clutch actuator.

The actuator is a simple mechanism (or rather, electromechanical), through which the program changes gears, and also turns the clutch on and off. The control unit manages everything.

Checking the brushes on the actuator motor

So, the question arises: how to check if the matter is really in the brushes? The answer is very simple. First we need to remove the servo itself. It is not difficult to do this. First we need to lift the hood of the car and disconnect the battery terminals. In the second step, we take out the battery itself and begin to unscrew the platform on which it was located. This is not difficult to do, since it is attached with only four bolts. Having unscrewed it, we take it out - here we have a view of the part we need - the clutch actuator. In the photo below you can see how it looks from above.

Having gained access to the required node, disconnect all connectors from it. As a rule, there is only one, but for more modern models there may be several. Having disconnected the wires, we find three bolts on which it is attached. Finally, we unscrew them and freely take out the Toyota Corolla actuator. In the photo below you can see the removed servo and examine it in more detail.

Taking it off and looking at it in detail external damage, we begin to look for contacts of the motor. Everything is very simple here. The motor contacts are those connectors that were disconnected at the very beginning of the work and they look as shown in the photo. Once again, it is worth repeating that appearance may vary slightly on newer models.

Next, we need to disconnect the motor from the gearbox. We will need a hexagon in order to unscrew the three fixing bolts and remove it. So, we unscrew the bolts. We take the motor. Now we can test it. To do this is very simple, we just need to apply 12V to the motor contacts - if the motor does not work, then try pressing the brushes with a screwdriver or any other available means and reconnect it to the battery. If the motor spins only with the brushes pressed, then the matter is in them, and we continue to understand further. If the motor does not react at all, we just need to replace it with a new one and the problem will be solved. In the photo below you can see the motor in more detail from all sides.

Having considered the motor, let's analyze it. To do this, we split it in half - you need to make some efforts. Next, we will see magnets inside the motor housing, and the elongated part will consist of a cover anchor with a bearing and a power chip. On the photo close-up elongated part removed.

pulling out this part motor, we proceed to our main task - replacing the brushes of the actuator motor Corolla clutch. In order to change the brushes, we need to remove the plastic cover that the bearing holds. It is logical to think that in order to remove the plastic we need to remove the bearing. In order to do this, we need a two-arm puller, which will later be simply modified by you. When you remove the bearing you will understand why. None of the standard pullers will fit here. We also need a brush assembly from the VAZ generator. It looks exactly like the photo below.

So, when everything is bought, we need a vise. We insert the anchor back into the body and carefully clamp it. We grind the legs of the puller to the size we need and install it on the anchor to remove the bearing. Here we had a problem with the fact that we could not rest the puller shaft against the anchor - the problem was solved by lining the key. To secure the process, the puller legs were pulled together with Velcro - this made it possible to clearly fix them on the bearing. The wrench, by the way, began to serve as a good lever for removing the bearing. The photos below show the whole process step by step.

After some time, the bearing was removed. Next, we need to remove the plastic cover. Nothing prevents us from doing this, we just pull the anchor out of it. In our case, one brush fell out by itself, the second had to be torn off with tongs. The photographs below show used and new brushes- Feel the difference. It was because of this wear and tear that the motor stopped working.

Pulling out the old brushes, insert new ones in their place. After that, you need to carefully solder each of them to its contact on the connector. It is very simple to do this - we take a soldering iron, tin and rosin and begin to solder according to all the rules of soldering. Beforehand, it is worth thoroughly cleaning the wires from plaque, oxidation, etc. The work must be done with high quality, so constant vibration will tear off poorly soldered wires. You can see the result of the work in the photo below.

Factory clutch actuator- this is a flaw, a "marriage" of the manufacturer. Yes, it will serve you for some time, but sooner or later it will have to be replaced due to rapid mechanical wear.

Let's highlight the main reasons for the failure of the factory actuator:

• Rapid wear of polymer bushings;
• Violation of the position sensors;
• Breakdown of the electric motor;
• Mechanical wear, jamming and destruction of gear teeth.

Upgraded actuator is an actuator that lacks main reason its failure. Since the actuator bushings are replaced by ball bearings rolling. During its manufacture, complete diagnostics assembly, washing, installation of bearings with housing boring and shaft grinding. Worm bearings are changed. Adjustable axial clearance and contact patch.

Simply put

The upgraded actuator is:

• Significant increase in the service life of the clutch of your car;
• Increasing the resource of the electric motor;
• Most importantly, getting rid of your phobia that you can’t drive a car further than the Moscow Ring Road.

Actuator upgrade- this is great option for Toyota Corolla 2008, because if you buy new part- soon problems with neutral speed will return. This is due to a ridiculous flaw in Japanese designers. A factory defect can be corrected within 2 hours.

It is also advisable to install the upgraded component part on the 2007 Toyota Auris and Yaris. These models are also often subject to problems related to the functioning of the drive.

Clutch release problems, the culprit of which is the actuator, haunt not only Auris, but Verso and Corolla. Robot-gearbox clutch actuator helps save money.

Its replacement, more precisely the modernization of mmt, consists in the processing of the shaft bushings and the inclusion of bearings in the design. These manipulations increase operational period component part, eliminates constant problems.

There is no particular need to buy a new drive actuator. Especially considering that the price in Moscow and the Moscow region is several times higher than replacing the gear selection unit with a modernized part. The new shift actuator ceases to function fully due to the fact that the shaft bushings worm mechanism are breaking.

Today many automotive manufacturers all over the world produce their cars equipped with robotic box gear shifting. This type boxes are famous for their reliability and convenience for the driver of the car. In this article, we will talk about one node, without which the operation of the robot is almost impossible - this is a servo drive, or as it is also called an actuator. Below we will consider a description of the features and problems of the robot actuator on the Toyota Corolla. So let's get started.

General information about the robotic box actuator

As we know, this item serves only one purpose - to choose necessary transmission for more efficient use of engine speed and driver comfort. This mechanism comprises:

• Electric motor - drives all internal gears;
• Shift and Gear Select Stroke Sensor - this sensor determines when and at what speed it is necessary to switch, this is done depending on the number of revolutions and the load on the engine and gearbox;
• Directly the gearshift mechanism itself, which in turn consists of: an internal lever, a selector lever shaft, a shaft coming from an electric motor and a ring gear.

The structure is not very complex. For a better understanding, it is worth describing in detail the process of its work. Let's start with the main one. The rotation of the electric motor shaft is transmitted to a special gearbox, which consists of the ring gear of the shaft rotation lever, the gear selection and shift lever, and the rotation of the electric motor shaft is transmitted to the shaft of the gear selection and gear lever, which in turn rotates the internal gear selection and gear lever.

The rotating shaft of the electric motor transfers rotational energy to the rack and pinion, as well as to the select and shift lever shaft, thereby displacing the internal select and shift lever.

Further, the movement of the inner lever is transmitted to a special shift fork rod, through the rod lever - as a result, the gear is shifted by means of the robot actuator on the Toyota Corolla.

Below is a schematic illustration with a description for a more correct understanding of the gear shifting process.

Features for servicing the actuator

If we need to remove the robot actuator, first of all we need to set the robot switch lever to the neutral position, after which we need to remove the terminal from the battery, and only after these two actions, remove the servo. If it is impossible to do this - due to a malfunction of the mechanism, we need to set the required position manually. To do this, we need to remove the plug from the transmission housing and manually set the position along the slot. If the slot is not in neutral position- this needs to be corrected. It is very simple to do this - insert a flat screwdriver into the slot and turn it. The schematic picture shows the provisions - they should be guided.

Error correction

Incorrect dismantling of the device can lead to some problems. One of the most common problems is the mutual mismatch of the actuator gears. Typically, troubleshooting information in technical documentation not described. So now let's take a closer look at this problem ourselves. There is nothing complicated here, only skillful hands and a certain level of ingenuity are needed.

So, let's begin. Before assembling the actuator, it is necessary to dismantle both sensors for selecting and engaging gears. After removing them, it is necessary to check the condition of fastening of the sensor drives to the shafts of the gear sectors. You should make sure of the following:

• We check if the rotors of the drives are unscrewed - if there is such a problem, then we twist them;
• We check the rotors for play - if there is any, then it must also be eliminated.

The rotors must be securely fixed. As a rule, a special thread sealant is used for this, which will securely fix the axles in their places. The photo below shows the location of each of them.

The main reason for the inability to synchronize the box on the car, as well as the cause of the actuator error, is on-board computer can serve as a drive rotor that does not have proper attachment to the shaft of the gear sector.

If everything is in order, then proceed to the consideration of the next step. We open access to the gear sector and set them clearly according to the marks on the gears. In the photo, these marks are circled and indicated by arrows.

After setting the marks, you should scroll the gear sectors to the engagement positions of the middle parts of the sectors, when this point is reached, it must be marked with a marker.

After performing these actions, we install the gear selection shaft into the actuator itself until the splines enter the intermediate gear sector by about 5 millimeters. We scroll the fidget rotor of the gear selection sensor drive counterclockwise to the very stop of the plastic gear and finally, we slide the shaft into the actuator. Here, the rotor of the sensor drive must, simultaneously with the movement of the shaft, rotate through an angle of exactly 90 degrees counterclockwise. We look at the photo.

After completing all these actions, we check the correct installation of the selection and gear shaft, and also check the position of the gear sector. The latter must be aligned with the protrusion of the shaft housing. The photo shows everything very well.

We make sure that there is no mutual displacement of the marks applied earlier. It is very easy to do this in the photo below, the places that should be checked are marked.

Next, you need to install the gear selection sensor. For correct installation it is necessary to extend the gear selection shaft by 15 millimeters from the actuator, after which only install the sensor and insert the shaft until it stops. We scroll the sensor to the right until it stops - it should be turned clockwise, until the mounting holes match. We fix the sensor.

Checking the label position neutral gear and install the actuator back into place. After installing it correctly, we attach the battery terminal and conduct a test run. If there is any malfunction in gear shifting, as well as in their choice, we check everything again.