Space Speedometer "Gas"
If you have a need to change the speedometer indicators of the gas car, make it easy and simply be able to with the help of special devices. Perhaps the main advantage of their advantage is that the winding of the speedometer can be made independently, without the cost of payment of specialists.
When is the "Gas" speedometer winding?
Today, the winding of the Speedometer "Gas" with their own hands is in demand from many motorists. To the main reasons, the need to winding the speedometer can be attributed:
premature passing then;
breakdown of one or more electronic devices;
Buying new car Engine;
installation of wheels of non-standard type;
Acquisition of new dashboard.
Compensation of fuel expenses by drivers (an artificial increase in a kilometer traveled allows the driver to completely write off the "extra" gasoline).
How to wind the speedometer on gas?
Very often, the owners of Gazelle raises the question: "Is it possible to twist" Gas "mileage independently? If so, what does the "Gazelle" speedometer winding scheme look like? Let's deal with together.
In order to change the speedometer testimony on Gaza, you will need a lot of time. For this you need:
1. Remove the speedometer box
2. Get to the electric motor
3. twist it with a cable
4. Remove and disassemble glass speedometer flap
5. Manually twist the rollers displaying the car mileage to the desired readings.
But believe me, this occupation is very long and painstaking. Well, if you need to hire just a few kilometers. And if a few hundred?! That is why the owners of "gases" have increasingly began to give preference to special devices intended to increase the rally.
How to use the winding speedometer on gas?
How to wind the speedometer on gazelles using the device? Easily! The work principle of winding is very simple:
The device mimics the pulses of the speed sensor;
The car gets from on-board computer information about movement;
Indicators of the odometer vary in the biggest.
Thus, only per hour can "drive" about 200-300 kilometers!
It should not be afraid that the device will create a serious burden on the battery - in fact, the winding consumes not much energy at all, and its use will not affect the decline in the battery charge.
To make it easier for you to deal with the principle of winder, we will provide the "Gas" speedometer winding scheme:
In order for the winding to start working, you need:
Connect it to the Gazelle speed sensor (located under the steering column in the block);
Get out kilometers to the desired figure.
And all! You can safely go to that. Due to the fact that the information about the mileage changes immediately in all electronic blocks, no one will suspect you in the artificial increase in the kilometer of your Gazelle, which diagnostic equipment For this not used?
Where to buy a Motalka Speedometer on "Gas"?
The company "Avtodokim" offers you not to spend your precious time on the search for the scheme of the Motka Speedometer "Gas" on the Internet and an increase in the car runs manually. Better contact us and buy an inexpensive and reliable winding speedometer. This instrument will help you quickly and safely increase the kilometer "Gazelle". Our specialists will explain how to connect and use the device, and will also advise you in detail in all the features of its work.
The need to twist the odometer testimony can occur for various reasons, in particular, if we are talking about Gazelle cars. The principle of operation, malfunction, as well as the question, how to wind up the Gazelle, will be considered in the article.
[Hide]
The principle of operation of the speedometer
Before you tell how to twist or appreciate the odometer testimony, we will deal with the principle of operation of the Speedometer on the Gazelle. The principle of operation of the mechanism is to measure the velocity velocity by means of the mechanical connection of its arrow with the output pulley of the gearbox. The latter gets the drive from the wheels.
The shaft can give a true measure of driving speed, more accurate indicators will allow the wheel of the car. All because the pulley of the gearbox is located further from the gearbox and closer to the wheels, and the speed with which it rotates is set in accordance with the final rate after the CAT. The speed of rotation of the pulley can be identical both on the first and fourth transmission, but the difference in the speed of the machine can be colossal.
In the CAT, the output pulley contains a gear rotating with pulley. The gear is associated with the speedometer drive cable. In the scheme, the cable is a durable wire located inside the protective rubberized casing. One end of the cable is installed in a special hole and fixed on the drive gear. When rotating the gear, the cable rotates with it.
The second end of the cable is connected to the instrument on the control panel. At the end there is a magnet in the shaft form, which is installed close to the steel drum, but not touching him. The drum is fixed on the needle and transmits readings on the appropriate scale. When vehicle It is worthwhile, the needle of the cable holds on a zero level due to a small spiral spring.
Circuit Making Scheme Possible malfunctions of the device
Why does not the speedometer work?
There are many reasons, consider the main:
- The device does not work. The problem is to unscrew the nuts that connect the flexible pulley with the device and transmission, if so, then they need to be simply spinning. The non-working device may be a consequence of a cliff of a cable, if so, then it will have to be replaced. In some cases, the appliance roller is jammed in Gazelles, then nothing remains how to replace the device entirely.
- Arrow on the scale began to fluctuate, extraneous sounds may appear. Initially, install the instrument shaft, while the radius of the cable bending must be at least 1.5 cm. If the reason for the flexible pulley attachment to the device or transmission, the fixation nuts must be tightened to the end. In the absence of lubricant on the cable it must be added. If there are contamination on the place of installation of the cable on the transmission, it can provoke the oscillation of the arrow, so the dirt should be deleted.
- Adjusting the arrow of the device is broken - Another fault type. If the cable is set incorrectly in the shell of the Gabios Shaft, it must be built there again. Note that the persistent sleeve in must be located on the transmission side.
- The arrow of the device rested into the limiter and does not rise above, This may be a consequence of a spray spiral spring, the only option will be a complete replacement.
Winding device
So how to twist the speedometer on Gazelle himself? You can bring up and dance testimony in several schemes, we consider each of them separately.
Homemade methods
If you do not know how, you can use simple methodwhich lies in the intervention in the work of the odometer. Before you replete the odometer, make a seed with tweezers. It is necessary to disassemble the dashboard and partially disassemble it by opening the glass and dismantling the odometer. With the help of sewing and tweezers, a mileage is twisting in a car. The twisted odometer is installed in the location in the control shield and the tidy is connected to on-board network.
There is a way that is referred to as "collective farm". How to wind up readings in such a way? Very easy - the winding diagram involves turning off the cable from the instrument and connecting a construction drill through it with a reverse function. The drill turns on and the testimony is wounded, everything is simple here.
Ready options
If you are the owner of a new model, the winding can use the ready-made spanometer of the Gazelle Business, equipped with an electronic odometer. How to wind a speedometer with such a device? There is nothing complicated in this.
Before submitting the indicators, you need to find the OBD-2 connector on the car to which you need to connect the tilt:
- First, connect the device to the connector, the ignition must be disabled.
- By activating the necessary mode, turn on the ignition, the indicator light should light up on the multiple, thanks to which you can adjust the speed of winding the readings. If the speed is small or missing, you need to use regulations.
- After the winding work is completed, the speedometer made can be left, to do this, turn off the ignition and disconnect the circle. The instructional nuances of the device may differ depending on the manufacturer and device, so when using it, follow the instructions.
Systems direct injection Fuel on domestic cars allowed to effectively use fuel, increasing the power of the engine. Recently on automotive market appeared high demand on devices that what electronic odometers. Who is profitable, wreking kilometer in your car?
The answer to this question is obvious. Drivers of state, service (corporate) cars are thus obtaining the ability to write off gasoline. And he is on the weight of gold today.
Earlier on old cars installed mechanical odometersAnd the kilometers could be turned only to mechanically. Over time, the electronic odometer invented, and skillful specialists of electronics from various autobasis, came up with a simple and effective method get out odometer. For this process, you need to connect a wire with an additional generator terminal to the dashboard, where the odometer itself is located.
But engineers electronics We developed new odometers that are very difficult to hack. And when once in the garage connected the odometer in the way that was mentioned above, the radio engineer discovered that the car would not start. A terrible driver who lost additional earnings, sent to look for other ways to solve this issue.
The story began with Gazelles and Sobility with 405 engines installed, which consumed a lot of fuel. It is these motors that began to stall when the folk craftsmen tried to turn the odometer. The technique of effective hacking device is very simple. To ECU ( electronic block The control) of the car must be connected to the "Combiloider" package, from which a special serial engine control program is read.
Then open the program CTPRO and in the menu from the listed configuration remove the tick opposite the speed sensor. According to this, the algorithm is written to the ECU with minor changes already a modified engine control program.
After such actions, it is possible to call a good familiar car electrician, which will connect the wire from the generator to the appliance panel odometer, and the process will go faster, you yourself will be able to wind the required number of kilometers. But this method has already passed into the past. Today the world is saturated with advanced gadgets and all sorts of electronics.
Using the method The volumetric installation is made by the simplest generator, which consists of three radio elements (see the electrical circuit).
The S1 toggle switch is needed to switch the electrical signal going to the instrument panel, or from our generator, or from the standard motion speed sensor. Our generator receives tension from the "plus" of the ignition lock. This allows you to wind up mileage, not a calling car (enough will only turn on the ignition). You can also include a scheme to work directly when the car is moving.
Automotive electrician it will definitely recommends that another resistor in sequentially with trimmed will recommend. It is necessary in order to adjust the engine to the leftmost position when the direction of regulation is to the extreme left position, the generation breakdown process.
Also in the scheme should be a protective diode to protect the electrical chain from the ransom. The ratings and condenser ratings indicated on the scheme are quite suitable for generating rectangular pulses amplitude 12V, in the low and low and high frequency (from 180 Hz, up to 1.5 kHz). These features are more than overlap this device on the different cars.
For prompt change Frequency range requires a condenser replacement. With a decrease in the capacitance of the capacitor, the frequency increases and vice versa.
The following scheme, with the same principle of the generator, is built on a chip 555 (1006Vi1).
It should be remembered that all the variant of the schemes given in this article were designed for 24V voltage, in the KAMAZ truck.
The figure shows the generator scheme at 176 (561) La7 or HeF4011.
The table describes a car with modified odometers.
| car model | Production year | Short description Installations |
| Gazelle | Combinations of devices, X311 connector "Green wire" pin - Signal of DS. Azhal wire - + ignition. Clean wire - weight. | |
| Kia Magentis. Hyindai Sonata. | Conventional three-wire speed sensor, side view  contacts, large connector, speed sensor is present |
|
| Hyindai Elantra. | The combination of instruments consists of three connectors: big -  Yellow, big - white, small - past. The figure shows a large connector (DS wire), the side view of the contacts, the wire gray with a brown stripe. |
|
| FORG TURNEO CONNECT, MONDEO | Speed \u200b\u200bsensor is an ordinary three-wire, the signal goes to the computer, the signal is removed from the computer digital busis transmitted to the control panel. You had to cut a white wire with a blue stripe, the contact number on the ECU - 3 | |
| Volvo S70. | Speed \u200b\u200bsensor is missing, the speed signal comes from aBS systems. The ABS sensor is a 6-voltage, sinusoidal current. The device receives a voltage from the stabilizer with an output voltage of 6 V, such as KR142EN5B. At the exit we get 6-volt rectangular pulses that are quietly "digest" tidy. On the panel connector A - right. 3 Contact - Blue Wire - Speed \u200b\u200bInput 05 Contact - Brown Wire - Mass18 Contact - Blue with Red Stripe - + ignition. | |
| Combination of devices, 35 contacts, wire with ABS and speed information. There is no numbering on the wires on the wires. | ||
| Mitsubishi - Pangero. diesel | The panels are connected three connections - one black, located first to the left of the driver's door, and two white. On the black slot of the extreme right - yellow-white with a silver ring, connected to the DS output. The winding device is any at the output with an open collector, you still need to install an opening. | |
| Two connectors from 15 contacts are present in the back of the dashboard, 6: 2 - Lilac10 - brown (1) 11 - green (1) 12 - yellow13 - brown (2) 15 - green (2) encoding goes left for right: from the center of the panel (gray connector) to the edge. We are interested in the 13th - brown (2) - responsible for the readings of the speedometer and the odometer account. Served a rectangle of ~ 500 hertz, a 4% duty, a classic generator scheme for 561 steriy, twist for 200 |
||
| Mazda Tribute (Aka Ford Maverick, Escape), American. | Connected to DS - two-wire, it is closer to the automatic shield. Quietly winds with a speed of 250 km / h, then goes out. Check does not light up. The generator is ordinary, only in the gap at the output of the speed signal you need to put a condenser (0.1 μF, ceramics), | |
Kamaz
| 
|
|
|
||
| MAZ |
Attention! + 5V (Medium Top Contact) comes out of the device! Take care of closures when serving voltages. It wines up to 5 kHz. |
|
| UAZ Patriot |  
|
|
UAZ Hunter
| 
|
|
Renault Logan"
| 7 - Black, Mass 10 - Yellow: 15 Ignition Castle Terminal 22 - Green: Speed \u200b\u200bSensor
|
|
| Hyundai Santa. FE. | 2007 | 
|
Before proceeding To some changes in the electronics of your car, you need to perform all the following items. Our task to detect the desired wiring through which the information on the car mileage information is in digital form on the appliance panel odometer. Further describes on points of action:
1) ——- Inspection of the gearbox, rear axle, front drive (If the car is a front-wheel drive) in order to detect the speed sensor.
2)——— If you found something like a speed sensor, but not sure that it is it that it is necessary to conduct tests. To do this, you need to remove the connector from it and drive a few kilometers. You must detect the termination of the speedometer or odometer. If this did not happen, then you did not know the velocity sensor of the car movement, but something else.
3) ——— In this case, if you detected a three-wire speed sensor, it is necessary to measure the voltage on its connector to determine the signal wire. Next, this signal wire must be brought on the dashboard. By the end of this wire, you will need to connect the winder. To do this, it is necessary to post drive wheels and force them to spin, in parallel with this control the signals passing on the dashboard using an oscilloscope.
4) ——— If the speed sensor could not be detected in the first point, then the odometer speed signal receives from ABS. In this case, the only option remains searching for the output of the signal on the instrument panel using an oscilloscope.
If you have detailed information materials in your hands, electrical circuits According to that model, the car you are going to make a "chip tuning", the task is quite simplified. Need to remember that every car different manufacturers Individual. You are fully personally responsible for your actions. Therefore, before proceeding with the attachment of the selected wires, you need to double all over again.
In this brief review the winding odometer is lit general principles Solutions to our tasks. Specific implementation, on a specific auto model, can be very different in favor of complication. If you have already had experience in the other type of car, which is not still on our list, send information to us, and we will gladly replenish our table.
Some subtleties to create a odometer winder on cars Ford. Mondeo I. Ford Focus. 2006, as well as Toyota Camry.
These models cars Use signals coming from ABS as a velocity signal of the vehicle. The type of sensor used on these cars is current, which means a change of current in the chain when the wheel is rotated. Changes occur in the range of 7 - 14mA. If you connect the oscilloscope in parallel to the sensor, then when you rotate the wheel, we get a meander with a scope of about 0.5 V, with standard indicators in 12 V. The following is a diagram that fully imitates the operation of such a sensor.
On the models Ford. Mondeo and Ford Focus Plus Wire We can determine using a voltage tester by removing the connector and conducting steps with a wire when the ignition is turned on. In this example, we used the effect of complete (manual) peroxulation. To wind the odometer, you need to open the hood, then remove the plug from the connector, and connect the winder in its place.
Turn on the ignition of the car And we produce the necessary winding. After performing the necessary actions, connect the plugs in the connectors that restore the factory connection of the ABS control unit with sensors. All these wires could be switched onto the relay, but as a result of our actions would have a lot of excess wires. It follows when testing and working our system on a cooler of the odometer, use two leading wheels, because when using one wheel, the speed indicator will not exceed 30 km per hour.
The Toyota Camry car model, 2006 manufactured by the instrument panel, which is called "Optitron", and has neon backlight. Engine volume is 3.5 liters, gearbox - automatic, the speed signal incoming to the odometer is taken with ABS and has the shape of sinusoids with an amplitude 1B, with a frequency of directly proportional rotation speed. This car uses an inductive type of ABS system sensor.
Electrical scheme that we need for the odometer cheat must be built using the CT3102 transistor. The resistive divider conducts operations on the amplitude of the output signal, reducing it. A capacitor with a capacity of 0.1 μF to 0.47 microfi removes a constant component of the signal.
We will remind you that it is not recommended to intervene in the work of the ABS system, but if you have all decided, then you must fully present the consequences and in accordance with this work at the proper quality level.
Sometimes during the operation of the car, there is a need to correct the testimony of the speedometer in a majority, speaking by the simple language of "winding readings". In order to do this, a large number of different devices are sold at a variety of prices, and for a friendly soldering iron on the Internet there are many schemes that are invited to solder.
For the finished "Motalka" often ask for several thousand rubles, and to unwind it yourself, you still need to purchase radio components and spend a certain time to assemble the device. You do not want to spend money or time? Do not need! According to the numerous requests of drivers, a special revolutionary way of winding a speedometer was developed in the workshop of the stroking mechanic using a conventional fan from the computer.
We will need a computer fan "Cooler", to which 3 wires are suitable. An absolutely any fan is suitable with a connection of 3 wires, from the power supply, from the processor, from the video card - from anything. Such a fan has an inside of the Hall Effect, exactly the same as it is in the velocity sensors.
We take such a fan, remove the connector from the speed sensor and connect the fan according to the scheme. Speed \u200b\u200bsensor in the car stands on the gearbox, and Jeeps 4x4 - on dispensing box. We remove the connector and connect the fan instead of the speed sensor, turn on the ignition and went! The fan should start spinning, and the speedometer is to wind up kilometers. The purpose of the velocity of the speed sensors of most cars is shown in the diagram, do not forget that "moms" connectors are mirrored, to guarantee the correct connection, check the contacts "plus" and "mass" with a tester when the ignition is turned on on them should be + 12 volts.
Are you all sealing and not to remove the connector? Not trouble, we thought about it! Experience the feed wires from the fan so that they are enough to battery and connect the fan to the battery directly. To the fan signal wire, take a needle and in an inconspicuous place neatly punctors insulation of the signal wire from the speed sensor Connect the fan signal into the parallel. But with this method, winding will have to tinker a little. The fact is that the outputs of the sensors are made according to the "Open Collector" scheme, and if the magnets in the standard sensor are positioned when the output key of the speed sensor is open, then the winder will not work. What to do? You need to catch the moment when the key of the speed speed sensor closes, and then then start the winder. How to do it? The surest option is to subdominate rear wheel And smoothly turning it to catch the moment when the Motalka starts working, but you can try and remember the car on a little bit, although it can be difficult. Do not forget that in any case the ignition should be included to start the speedometer itself.
Note that different fans have different speeds of rotation, the speed of the jantian is written on the sticker, naturally, the faster the fan, the faster you can hide the necessary readings, but in some ways, protection from too impatient, and at all high speed Winding speedometer ceases to read the testimony. What to do in this case? Just find the fan is preferred.
Where to get a suitable fan? Yes, anywhere, to dig out of a faulty computer, ask for a friend, find on the garbage, to buy in the store. The coolers are in any computer store, the price of them starts from 100 rubles, and find the fan is much easier and cheaper than buying or soldering "Motalka".
And this ... Do not carry a lot, okay? :)
"How many states do not fight, you still do not return!"
With the development of injection systems on domestic cars, there has been a steady demand for devices that "wound" electronic odometers. Why do you need, you ask? The answer is obvious: for drivers of state (service) cars is a way to write gasoline. And he, as you know, has now become expensive ... Previously, when only mechanical odometers existed, this task was solved by different, also mechanical methods. Then the first electronic odometers appeared, and the "advanced electricians" of various autobobes found a simple and effective way to wet odometers, stretching the wire with an additional generator terminal to the instrument panel. But the electronics did not stand in place, and when, once by connecting the magic wiring in the way the magic wiring described above, found that the car does not start, there was nothing left to do how to send an affirmative driver to look for other ways to solve the problem.
It all started with ordinary gazelles and sables with 405-engines, which on our city-forming enterprise divorced enough. It was they who began to stall when using the above method.
The method of struggle is very simple and effective. A PAC "COMBILODER" is connected to the ECU of the experimental car and the serial engine control program is read. Next, it opens in the CTPRO program and the speed sensor flag is removed from the configuration. And with such a small change in the computer already a modified engine control program is recorded. In principle, after that, you can call the "advanced electrician from the agricultu", which will bring the magic wiring from the generator and the process, as they say, will go ... But this is not our method.
The method of volumetric installation is manufactured by the simplest generator of three parts (see the scheme below).
The S1 toggle switch switches the signal running to the panel or from our generator, or from the speed speed sensor. The generator is powered by the plus of the ignition lock. Thus, the main advantage of such a solution is that it is possible to wear a mileage without a car setting (it is enough to turn on the ignition), as well as right on the move of the car "moving at a speed of 200 km / h" on the envy of colleagues in the fleet.
Several comments according to the scheme. Of course, a pending electron will necessarily recommend putting another resistor consistently with a trimmer that in the extreme position its engine generation does not break. As well as necessarily a protective diode from the ransover scheme. But we do not need it with you, we are neat, attentive and leopard. With the scheme specified on the scheme, the diagram generates rectangular pulses by an amplitude of 12 volts in the frequency range from ≈ 180 Hz to ≈ 1.5 kHz, which still overlapped the need to apply this device on different cars.
If necessary, quickly change the range of generated frequencies requires a condenser replacement. When it decreases, the frequency increases and vice versa.
Another generator scheme provided to publish YVM.
Below is a table in which the car is described, with us personally modified odometers.
| car model | Year | Short Description Installation |
| Gazelle | since 2002. | Connector X3 Combination of devices: 11 Contact Green Wire - Signal DS. Yellow wire - + ignition. Black wire mass. |
| Kia Magentis. Hyindai Sonata. |
2004 | Speed \u200b\u200bsensor is, an ordinary three-wire, large device combination connector, a view from the contacts, brown wire.  |
| There are three connector on the instrument combinations: Yellow big; white big; White small. In the white big connector arrow in the picture the Wire of the DS, the side view, the wire is gray with a brown strip.  |
||
|
Forg Tourneo Connect. |
The speed sensor is, the usual three-wire, but its signal goes to the computer, and already from the computer on the digital bus is transmitted to the control panel. Therefore, we had white with a blue wiring band for contact number 3 ECU. |
|
| Volvo S70. | 1997 |
No speed sensor, the tidy signal comes with ABS-ki, represents a 6-volt sinus. Therefore, our device has been eaten from the simplest stabilizer with an output voltage of 6 volts, such as KR142EN5B (or any low-power imported analog) and at the output, it has already had 6-volt rectangular pulses that are quietly "digested" tidy. On the panel connector A - from above-right. 3 Contact - Blue Wire - Speed \u200b\u200bInput 05 Contact - Brown Wire - Mass18 Contact - Blue with Red Stripe - + ignition. |
| Toyota Camry. | 2003 | Large device combination connector, 35 contact - wire with ABS and speed information. If you look closely on the wires there is a numbering. (Many thanks to Coldun am for the help) |
Kamaz  |
|
|
|
|
||
| MAZ |
|
|
| UAZ Patriot |
|
|
UAZ Hunter  |
|
|
Renault Logan"  |
2005 |
7 - Black, Mass |
| Mitsubishi - Panger Diesel | 2005 |
There are three connections on the panel - one black (first to the left of the driver's door) and two white. On the black slot of the extreme right wire (yellow-white with silver rings) DS. A winding device Any at the output with an open collector (for example, a device for checking the DS chain given in the Oleg Bratkov article). Naturally, you still need a switch. |
| RenaultKangoo. | The back of the dashboard is two connector - gray (two rows) and red (single-row), pay attention to the red: 15 contacts, 6: 6: 2 - Siren Pinout on the left for the right; From the center of the panel (gray connector) to the edge. We are interested in the 13th - brown (2), he is responsible for the speedometer and the odometer account. She served a rectangle of ~ 500 hertz, a 4% duty, a classic generator scheme for 561 sequences, twisted for 200. |
|
| Mazda Tribute (Aka Ford Maverick, Escape), American. | Connected directly to DS. DS two-wire, stands on the automatic transmission closer to the engine shield. The generator is ordinary to 561 liters, only the speed output rupture is to put a condenser (0.1 μF, ceramics), apparently there is a sinusoid signal. Quietly winds with a speed of 250 km / h, then goes out. Check does not light up. | |
|
Hyundai Santa Fe. |
2007 |
|
At the end, we denote an exemplary algorithm for the search for one single, the necessary wiring through which on the appliance panel odometer receives information about the mileage.
1. Inspection of the gearbox, drives, rear axles In order to detect the speed sensor.
2. If the speed sensor (or something similar to it) is detected, then it is necessary to make sure that it is he. Remove the connector from it and make a small test drive. A speedometer or odometer should stop working.
3. If the detected speed sensor is three-wire, then it is not necessary to measure the voltages on its connector and determine the signal wire. Next, this warning wire is brought to the instrument panel to connect the winder in the cabin. If the sensor is two-wire, then it is necessary to determine the signal shape that comes to the panel. This can be done by hanging the drive wheels and forcing them to spin, control the oscilloscope signals coming into the panel.
4. If the speed sensor is not detected in paragraph 1, it is very possible that the speed signal panel receives with ABS. Then by the method described in paragraph 3 it is necessary to search for this signal with an oscilloscope, on the connectors of the instrument panel.
Of course, if you have detailed information materials on the model of the car that you have gathered to subjected to such a "tuning", the task is very simplified. But in any case, do not forget that you act on your own risk and therefore recheck themselves three times before it is thoughtlessly "to climb something." It should also be noted that in this brief review, general principles for solving this problem are highlighted, and a particular implementation on a particular car can be very different in the direction of complication. If you have information on connecting to other types of cars, send, with pleasure to replenish the "Applicability" table
Some Notes to create winder for Ford Mondeo & Ford Focus, 2006, Toyota Camry
These cars as a speed signal use signals from ABS sensors. On these models, these sensors are current, it means when the wheel rotates the current in the chain. Changes are approximately 7/14 mA, that is, if you connect the oscilloscope parallel to the sensor before when the wheel is rotated, we must see the meander with a scale of about 0.5 volts on the background of 12 volts. The following scheme imitates the operation of such a sensor.
The positive wire can be determined by removing the connector from the sensor and interpreting the tester voltage on the wiring when the ignition is turned on. We used full manual recombulusation, that is, to wind up the client opens the hood, takes out the plugs from the connectors, the winder will push the plugs. Includes ignition, makes the necessary winding. After completion, removes the winder from the connectors, and plugs into the plug connectors, which restore the factory connection of the ABS control unit with sensors. Of course, it was possible to switch all this on the relay, but a lot of extra wires appeared under the hood, and a disguise was put in the chapter. It should be used two wheels, since with one speed does not rise above 30 km / h.
Now consider toyota car Camry, 2006. model year. Panel U. this car An optitron is called, and has neon backlight. Machine 3.5 liters on the machine. The speed signal is also taken from ABS sensors, but is a sine amplitude of about 1 volt and the frequency of directly proportional to the speed of rotation. That is, the ABS sensor is applied inductive type. In this case, the scheme below was applied. The transistor applies any type Kt3102. The resistive divider reduces the amplitude of the output signal, and the capacitor with a capacity of 0.1 μF to 0.47 μF removes the constant component of the signal. As a result, the output was formed, of course, a toned alarm, but the ABS control unit perfectly swallowed and the result was obtained. It should also be noted that such a signal must be supplied to two front wheels. True, in this case, complex commutations did not need, and the necessary signaling wires were accumulated directly to the standard wiring.
In conclusion, I would like to recall that ABS belongs to important security systems, and if you decide to interfere with it, you must clearly present the consequences and in accordance with this work to perform at the expense level.
A small addition to "KAMAZ" odometers. This device can be easily configured to "incorrect" readings using
