CAN controller and speed generator: is there a difference between these devices?
The difference between the devices lies primarily in the cars with which they are compatible. The CAN twister can only be used on cars equipped with a special CAN bus, mainly foreign cars older than 2006. The winding generator, in turn, is compatible with older foreign cars, as well as with Russian-made cars.
Are there any rules in the Traffic Regulations or Code of Administrative Offenses that prohibit the procedure for adjusting the odometer?
No, in the clauses of the rules, as well as in the Administrative Code, there are no such prohibitions, with the exception of the point that changing mileage readings should not violate the rights of third parties. Otherwise, the vehicle owner is free to decide for himself what mileage will be displayed on the dashboard of his car.
I live in Irkutsk. How long will it take for the device to reach me, and how can I pay for the order?
We send speedometer reading correctors by post to any location in the Russian Federation on the same day the order was placed. You can pay for your purchase immediately upon receipt. As for the delivery time, it all depends on the location of your locality and the speed of the post office. For example, the parcel will be delivered to Irkutsk within 5-7 days. At any time, you will be able to obtain information about the status of your order by tracking it using the identification number that we send to you via SMS after sending the device.
How to connect the device to the car?
The connection procedure is very simple: the winder is connected via the CAN bus through a diagnostic connector, most often located under the steering column or next to it. When connecting the generator, there is NO INTERFERENCE in the operation of the electrical wiring!
How can you determine that the speedometer readings have already been artificially changed?
If this procedure was carried out using one of our devices, then nothing. Moreover, this will not be possible to do either at a maintenance center or at a service center.
How much does delivery within the city cost?
Delivery of the winding generator in Moscow is free!
How quickly can you deliver the device to me? I live in the VDNKh area.
We can deliver the device to this area of Moscow within an hour, but in general delivery within the city almost never takes more than 2 hours. We can deliver your order to its destination at any time convenient for you.
Does the device put a greater load on the battery when the ignition is on?
Our mileage winders consume minimal energy. The energy consumption from their operation is comparable to the consumption required to charge a mobile phone.
I would like to learn in detail about all the possibilities of turning the speedometer. Who can explain them to me clearly?
A specialist from the Avtopribor company will tell you about all the features of the mileage winding generators; special attention will be paid to how to use the device. If necessary, our staff will answer any of your questions.
Will the speedometer corrector or the procedure itself for changing the mileage readings affect the operation of the electronic system of my car?
All our devices are certified and absolutely safe. Before entering the market, they are tested for performance and safety using special equipment. Our winders will not cause any harm to your car!
What is the warranty period for mileage correctors?
The warranty on all devices is 5 years.
Diagnostic connector and CAN bus - are they the same thing or not? If not, please explain what is the difference?
This is not the same thing: the CAN bus is a device that makes it possible to combine and use all the variety of functions, properties and capabilities of various electronic devices, and the diagnostic connector is the place to which diagnostic service equipment is connected, and in our case, a torque converter speedometer readings.
Do you offer discounts on the purchase of spinners?
Yes, sure. And you can get your first discount by ordering 2 or more devices from us. For all subsequent purchases from our company, the discount amount will increase.
At what speed will the device accumulate mileage?
The speed of rotation depends on the specific make and model of the car; the range here is very wide: from 200 to 7000 km/h. You can find out the exact winding speed for your machine by calling us.
The winder is broken! What to do?
You can exchange a damaged device for a new one by visiting our office in Moscow. If you live in another city, you need to send us the broken device by mail along with the 14-digit code indicated on the receipt. After this, we will send you a new device free of charge to replace the damaged one.
Changed the car. Is the old speedometer knob suitable for changing the mileage on it?
In most cases, it won't work. However, with us you can exchange your old device for a new one with a small surcharge.
Direct fuel injection systems on domestic cars have made it possible to use fuel efficiently, while increasing engine power. Recently, there has been a great demand in the automotive market for devices that generate electronic odometers. Who benefits from increasing the mileage in their car? The answer to this question is obvious. Drivers of government and official (corporate) cars thus have the opportunity to write off gasoline. And today he is worth his weight in gold.
Previously, mechanical odometers were installed on older car models, and kilometers could only be added mechanically. Over time, an electronic odometer was invented, and skilled radio electronics specialists from various car depots came up with a simple and effective way to wind up the odometer. For this process, you need to connect a wire from the additional terminal of the generator to the dashboard, where the odometer itself is located. But electronics engineers have developed new odometers that are very difficult to hack. And when one day in the garage they connected the odometer in the manner described above, the radio technician discovered that the car would not start. The suffering driver, who lost additional income, was sent to look for other ways to resolve this issue.
The story began with Gazelles and Sobols with installed 405 engines, which consumed a lot of fuel. It was these engines that began to stall when craftsmen tried to increase the odometer. The method for effectively hacking a device is very simple. You need to connect the Combiloader PAK to the ECU (electronic control unit) of the car, from which a special serial engine control program is read. Then open the CTPro program and in the menu from the listed configuration, uncheck the box next to the speed sensor. According to this algorithm, an already modified engine control program is written to the ECU with minor changes.
After these steps, you can call a good friend of an auto electrician, who will connect the wire from the generator to the instrument panel odometer, and the process will go faster, you yourself will be able to cover the required number of kilometers. But this method is already a thing of the past. Today the world is saturated with advanced gadgets and all kinds of electronics.
Using the volumetric installation method, a simple generator is made, which consists of three radio elements (see electrical diagram).
Toggle switch S1 is needed to switch the electrical signal going to the instrument panel, either from our generator or from a standard speed sensor. Our generator receives voltage from the “plus” of the ignition switch. This allows you to accumulate mileage without starting the car (you just need to turn on the ignition). You can also put the circuit into operation while the car is moving.
An automotive electrician will definitely recommend that you solder another resistor into the circuit in series with the trimmer. This is necessary so that when the control is directed to the extreme left position of its slider, the process of generation failure does not occur.
Also, the circuit must contain a protective diode to protect the electrical circuit from polarity reversal. The values of the resistor and capacitor indicated in the diagram are quite suitable for generating rectangular pulses with an amplitude of 12V, in the range of low and high frequencies (from 180 Hz to 1.5 kHz). These characteristics more than cover the needs of this device on different cars.
To quickly change the frequency range, the capacitor must be replaced. As the capacitor capacity decreases, the frequency increases and vice versa.
The following circuit, with the same principle of operation of the generator, is built on a 555 chip (1006VI1).
It should be remembered that all variants of the circuits given in this article were developed for a 24V voltage in a KAMAZ truck.
The figure shows a generator circuit for 176(561)LA7 or HEF4011.
The table describes cars with modified odometers.
| car model | Year | Brief description of installation | |
| Gazelle | since 2002 | Connector X3 of the instrument cluster: Pin 11 green wire – DS signal. Yellow wire - + ignition. Black wire is ground. |
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| KIA Magentis Hyindai Sonata |
2004 | There is a speed sensor, a regular three-wire, large connector for the instrument cluster, view from the contact side, brown wire. |
|
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Hyundai Elantra |
2004 |
There are three connectors on the instrument cluster: |
|
|
Forg Tourneo Connect |
2003 |
There is a speed sensor, a regular three-wire one, but its signal goes to the ECU, and from the ECU it is transmitted via a digital bus to the control panel. Therefore, I had to tear the white wire with the blue stripe to pin No. 3 of the ECU. |
|
| VOLVO S70 | 1997 |
There is no speed sensor, the signal to the instrument panel comes from the ABS and is a 6-volt sine wave. Therefore, our device was powered from a simple stabilizer with an output voltage of 6 Volts, type KR142EN5B (or any low-power imported analogue) and at the output it already had 6-V rectangular pulses, which were easily “digested” by the device. On the panel, connector A is on the top right. 3 contact - blue wire - speed input signal 15 contact - brown wire - ground 18 contact - blue with a red stripe - + ignition. |
|
| Toyota Camry | 2003 | Large connector for the instrument cluster, pin 35 – wire with ABS and speed information. If you look closely, there are numberings right on the wires. (Many thanks to the Colduns for their help) | |
| KAMAZ
|
|
||
|
|
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| MAZ |
Attention! +5V (middle top contact) comes out from the device! Protect from short circuits when applying voltage. Swings up to 5 kHz. |
||
| UAZ Patriot |
|
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| UAZ Hunter
|
Swings up to 1 kHz |
||
| Renault Logan"
|
2005 |
|
7 - black, mass 10 - yellow: 15 ignition switch terminal 22 - green: speed sensor |
| Mitsubishi - Pangero Diesel |
2005 |
There are three connectors on the panel - one black (the first one to the left of the driver's door) and two white. On the black connector, the wire on the far right (yellow-white with silver rings) is DS. Any device for winding at the output with an open collector (for example, a device for checking the DC circuit, given in the article by Oleg Bratkov). Naturally, you still need a switch. |
|
| Renault KANGOO |
There are two connectors at the back of the dashboard - gray (two rows) and red (single row), pay attention to the red one: 15 contacts, 6 are used: 2 - lilac Pinout from left to right; from the center of the panel (gray connector) to the edge. We are interested in the 13th - brown (2), it is responsible for the speedometer readings and the odometer count. I supplied a rectangle of ~500 hertz, a duty cycle of 50%, with a classic generator circuit on the 561 series, it turns at 200. |
||
| Mazda Tribute (aka Ford Maverick, Escape), American. | Connected directly to the DC. The DC is two-wire, located on the automatic transmission closer to the engine panel. The generator is an ordinary 561le5, only you need to put a capacitor (0.1 µF, ceramic) in the gap of the speed signal output, apparently a sine wave signal is required there. It moves calmly at a speed of 250 km/h, then stalls. The check does not light up. | ||
|
HYUNDAI |
2007 |
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|
Before you begin making some changes to your car's electronics, you need to complete all of the following points. Our task is to detect the necessary wiring through which the instrument panel odometer receives digital information about the car's mileage. The following describes the procedure step by step:
1) Inspect the gearbox, rear axle, front-wheel drive (if the car is front-wheel drive) in order to detect the speed sensor.
2) If you find something similar on the speed sensor, but are not sure that this is it, then you need to carry out tests. To do this, you need to remove the connector from it and drive several kilometers. You should notice that the speedometer or odometer stops working. If this does not happen, then it means that you did not turn off the vehicle speed sensor, but something else.
3) In this case, if you find a three-wire speed sensor, then you must measure the voltage at its connector to determine the signal wire. Next, this signal wire needs to be called on the dashboard. A winder will need to be connected to the end of this wire. To do this, you need to hang up the drive wheels of the car and make them spin, at the same time monitoring the signals passing to the dashboard using an oscilloscope.
4) If in the first point the speed sensor could not be detected, then the odometer probably receives a speed signal from the ABS. In this case, the only option is to search for the signal output on the instrument panel using an oscilloscope.
If you have detailed information materials and electrical diagrams on hand for the car model that you are going to do “chip tuning”, then the task becomes quite simplified. It must be remembered that each car from different manufacturers is individual. You are completely personally responsible for your actions. Therefore, before you start connecting the selected wires, you need to double-check everything several times. This brief review of odometer winding highlights the general principles for solving the task assigned to us. The specific implementation, on a specific car of a particular model, may differ greatly in favor of complication. If you have already had experience with another type of car that is not yet on our list, send information to us and we will be happy to add to our table.
Some subtleties on creating an odometer winder on Ford Mondeo and Ford Focus 2006 cars, as well as Toyota Camry.
These car models use signals coming from the ABS as a vehicle speed signal. The type of sensor used on these cars is current, which means a change in current in the circuit when the wheel rotates. Changes occur in the range of 7 – 14 mA. If we connect an oscilloscope in parallel to the sensor, then when the wheel rotates we will get a meander with a swing of approximately 0.5 V, with standard values of 12 V. Below is a diagram that completely simulates the operation of such a sensor.
On Ford Mondeo and Ford Focus models, we can determine the positive wire using a voltage tester by removing the connector and working with the wire with the ignition on. In this example, we used the effect of complete (manual) recommitment. To wind the odometer, you need to open the hood, then remove the plug from the connector, and connect the winder in its place. We turn on the ignition of the car and carry out the necessary winding. After completing the necessary actions, we connect plugs to the connectors, which restore the factory connection of the ABS control unit with the sensors. All these wires could be connected to a relay, but as a result of our actions a lot of extra wires would appear. When testing and operating our system for winding up the odometer, you should use two driving wheels, because when one wheel is working, the speed indicator will not exceed 30 km per hour.
The TOYOTA CAMRY car model, produced in 2006, has an instrument panel called “optitron” and has neon backlighting. The engine capacity is 3.5 liters, the gearbox is automatic, the speed signal coming to the odometer is taken from the ABS and has the form of a sinusoid with an amplitude of 1V, with a frequency directly proportional to the rotation speed. This car uses an inductive type of ABS system sensor.
The electrical circuit that we need to change the odometer must be built using the KT3102 transistor. A resistive divider operates on the amplitude of the output signal, thereby reducing it. A capacitor with a capacity of 0.1 µF to 0.47 µF removes the DC component of the signal.
Let us remind you that it is not recommended to interfere with the operation of the ABS system, but if you do make decisions, then you must fully understand the consequences and, accordingly, carry out the work at the proper quality level.
Instructions for connection and operation.
Preparing the device for operation:
Before use, the device must be prepared for the vehicle with which it will be used. The device is initially supplied configured for mode 1. How to switch the device operating mode is described below:
Connect the rewinder to the vehicle's diagnostic connector (ignition off). The device indicator will display the mode number.
Turn on the ignition. The device indicator will light up continuously. The odometer reading will begin to increase. Control the winding speed using the main or daily mileage counter. If the winding speed is low or does not wind at all, switch the device submode (by briefly pressing the button) and again control the winding speed. In total, you can switch up to 8 modes. When switching submode, the indicator goes out briefly. Submodes are switched sequentially in a ring. By switching submodes, you can choose the winding speed that is optimal for you. The last selected operating mode and submode are retained.
Description of use:
Connect the device to the vehicle's diagnostic socket. Turn on the ignition or start the engine, when the device indicator lights up constantly, monitor the winding speed using the odometer.
Do not use the winder on a moving vehicle!
Once you have received the required odometer readings, turn off the ignition and disconnect the device from the vehicle.
Description of work:
When the odometer winder is connected to the diagnostic connector, the winder indicator will light up for 3 seconds, indicating that power is present and it starts working. Then the indicator goes out for 2 seconds and begins to quickly display the operating mode number at intervals of 0.5 seconds. The rewinder then checks the vehicle’s CAN data bus and does the following:
If the CAN data bus is not connected or active, the indicator on the odometer rewinder will not light up.
If the CAN data bus is connected correctly and there is activity on it, the indicator will light up briefly for 0.25 seconds with a pause of 2 seconds.
if the CAN data bus parameters are suitable for odometer winding (the parameters of the data bus and the selected operating mode are the same), the device indicator will light constantly, and odometer winding will begin to increase the mileage in the car. In this state, you can use the button to switch the operating modes of the winding device.
In total, the device has 8 submodes that switch in a ring; the last selected submode is remembered. By switching submodes, you can select the optimal odometer winding speed. The winding operation is controlled by the main or daily mileage. In Renault Fluence only for main mileage.
After 1-5 hours of total operation of the odometer winder, switching the vehicle type and operating submodes is blocked. To unlock the device if you need to use the winder on another car, you must contact the seller. Unlocking all winding devices requires a fee.
Switching modes:
In order to set the desired operating mode, you need to connect the speedometer winding to the car or apply power (4-pin ground and 16-pin +12V) and, while the indicator is on, press and hold the device button. While holding the button, wait until the indicator starts flashing with a pause of 1 second. The number of blinks corresponds to the mode number. When the indicator flashes the required number of times, you must release the device button. The odometer winder will reboot and display the operating mode number (vehicle type). The required operating mode is set according to the table.
Submode switching:
The submode is switched by briefly pressing the button (only when the ignition is on and the indicator is constantly on). The switching of the submode will be confirmed by the indicator (it will turn off for 0.25 seconds). Winding uses up to 8 submodes that switch in a ring.
Setting for Renault Fluence:
Connect the winder to the diagnostic socket in the center console (ignition off, doors closed). Check that the indicator displays mode 13. Turn on the ignition (do not start the engine!!!) and monitor the increase in mileage using the main trip meter. If the mileage does not increase or increases and returns to the same place, switch to the next sub-mode. Check the rewinder operation again. It is advisable to disconnect the negative terminal from the battery for 1 minute or drive 2-3 km between checks in each submode after winding. Correctly configured winding should reliably increase the mileage of the car, and then during normal vehicle movement a slight rollback in mileage is possible.
Table of mode correspondence to the car:
| 1. Ford/Mazda Focus – 2/3, Fusion, Fiesta, Transit, Tourneo, C-Max, Mondeo until 2007, Mazda – 2/3/6, CX-7, Scorpio | 17. BMW 7 series E65-66-67, X5 E70, X6 E71, 3 series |
| 2. Ford Mondeo since 2007, S-Max, Galaxy | 18. Hyundai Santa Fe since 2010, Genesis, IX55 |
| 3. Ford Transit Bus, Scorpio | 19. Mitsubishi Outlander XL, Lancer X |
| 4. Ford Maveric 2006 | 20. Volvo since 2008 |
| 5. Toyota/Lexus Lexus Lx570, Ls460 since 2007, RX350 since 2007, High Lander since 2008, Avensis since 2009, Auris since 2006, Camry since 2007, Tundra, Corolla since 2006, Land Cruiser 200, Prado since 2009, Rav4 since 2006, Verso | 21. Volvo from 2005-2007 |
| 6. Nissan/Infiniti FX-35/45, QX-56, G35, Pathfinder since 2007, X-Trail, Primera since 2005, Teana, Murano, Qashqai, Patrol since 2010, Navara | 22. Volvo spd=250 kbs until 2004 |
| 7. Audi A4, A6, A8, Q7, AllRoad | 23. Land Rover Discovery 3 |
| 8. VW/Skoda Passat B6, B7, Golf V, Jetta, Caddy, Polo, T5, Touareg, Caravelle, Multivan, Octavia, Superb, Yeti | 24. Suzuki Vitara since 2007, Kizashi |
| 9. Mercedes Bodies 164, 204, 211, 220, 221, 251, Vito, Viano, Sprinter, ML, GL since 2005 | 25. Ford Focus since 2011 |
| 10. Honda Civic since 2008, CRV since 2008 | 26. Audi\VW A6, A8, Touareg since 2011 |
| 11. Opel Zafira, Astra, Vectra, Antara | 27.Kia Sportage since 2011 |
| 12. Renault Scenic-2, Megan-2, Kangoo-2 | 28.Kia |
| 13. Renault Fluence*, Megane-3 | 29. Chevrolet Epica automatic transmission |
| 14. Ssang Yong Rexton-2 since 2007 | 30. BMW 5 and 7-series from 2010 (F-body) |
| 15. Chevrolet/Opel Captiva, Cruze, Opel Astra NEW, Saturn VUE | 31. Peugeot |
| 16. Hyundai Tuscon from 2010, Sonata from 2011, Solaris, IX30, IX35 | 32. Peugeot |
In cars Audi, VW, Skoda, Mercedes, BMW, Mitsubishi And car Volvountil 2004 It is necessary to route two wires from the engine CAN bus to the free contacts of the diagnostic connector. If necessary, contact specialists.
Trouble-shooting:
1. The indicator on the device does not light up.
poor contact in the connector between the device and the car.
malfunction of the supply circuit in the car connector
device malfunction
The ignition in the car is not turned on
incorrect operating mode selected
communication failure, poor contact, CAN bus not connected correctly
wiring fault in the vehicle CAN bus
the device is faulty
Incorrect operating mode selected (vehicle type)
Car ignition is not turned on
the device is connected to another CAN bus
4. After turning on the ignition, the indicator is constantly on, but the mileage does not increase
ignition not turned on
the device operating mode or submode is not selected correctly
The device is not suitable for this vehicle
Vehicle mileage is the main criterion by which the timing for maintenance is estimated. And the odometer device is responsible for the mileage readings. There are a number of reasons why drivers have to rewind their odometer readings. In this article we will tell you what a speedometer knob is and how to use it correctly.
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Types of speedometers
Before we tell you how to rewind or rewind the mileage on a car, we recommend that you familiarize yourself with the types of speedometers. Today there are several types of devices used in cars - mechanical, electromechanical and electronic devices.
Mechanical
The revolutions from the gearbox are transmitted to the device using a cable. The odometer measures the revolutions, according to which a certain path is set. For a mechanical speedometer, a special editor is used, configured with the required conversion factor.
In practice, it turns out that one revolution corresponds to a certain amount of mileage. The rotation of the output pulley is analyzed by indicating devices with marked numbers that display the distance traveled.
Electromechanical
An electromechanical device is a more advanced version of a mechanical one. As a result of the fact that the cable shows incorrect information, the electromechanical version is supplemented with a speed controller. Signals from the controller were sent to an electric motor designed to rotate the gearbox. This is the fundamental difference; in all other respects the devices are similar.
Electronic
Recently, all modern vehicles have been equipped with an electronic version. An electronic device is designed to measure the number of wheel revolutions. The device, analyzing the size of the wheel circumference, converts the number of revolutions into mileage traveled. Information is shown on the liquid crystal display.
Why bother?
Before we tell you about the operation of the speedometer twister, it would be a good idea to figure out why you need to twist and unwind the readings. Winding the indicator using a special winder allows you to increase the cost of transport when selling, this is understandable.
As for winding, there may be several reasons:
- A speedometer winder can be used to increase fuel and lubricant costs. After all, increased mileage makes it possible to write off more gasoline - such schemes are relevant for drivers of commercial vehicles. But if a business uses an older vehicle, fuel consumption levels will be higher. Adjusting the speedometer allows you to compensate for refueling costs.
- Speedometer calibration may be required when replacing the instrument panel. After all, when changing the control panel, you should take readings from the device in accordance with the operating conditions.
- Speedometer rewinding may be required when using other discs not recommended by the manufacturer. The diameter of the discs can be either larger or smaller; during calculations, the odometer may produce errors, showing incorrect readings. The speedometer corrector makes it possible to eliminate the error.
Modern dashboard Winding instructions
How to wind the speedometer with your own hands? Much depends on the type of device, since for each individual type the winding pattern will be different. To complete the task, you need to know exactly what type of device the car is equipped with.
Mechanical
How to wind and how to wind up readings on a mechanical device, for example, on VAZ, GAZ cars? There are two options to rewind the speedometer. The first and simple one is to disconnect the cable from the speed sensor, the end that is attached to the box, connect the drill to it and turn the tool into reverse mode. As you understand, in a few minutes of work you can rewind a decent amount of mileage. The second method is to dismantle and disassemble the dashboard. After disassembly, the odometer (counter) itself is removed, and the mileage is finally adjusted. Note that the methods are relevant for domestic cars produced before 2005 (the author of the video is Do It Yourself).
Electromechanical
An electromechanical device can be found on older vehicles, but winding up this type of speedometer will be more difficult than a regular mechanical one. In this case, the winding or unwinding procedure requires different approaches. It must be taken into account that the reduction in mileage in the case of an electromechanical device is carried out by dismantling and disassembling the control panel. To rewind the readings, the meter must be dismantled, then the numbers must be adjusted manually.
As for increasing readings, the procedure is carried out using a generator. Thanks to the generator, signals are generated that are sent to the control input. In accordance with the number of pulses, device readings are formed.
Electronic
How to twist an electronic speedometer? As mentioned above, the devices are mounted on all modern cars. Correction of speedometer readings must be carried out in accordance with the production date of the vehicle. The bottom line is that an electronic device could be implemented in different ways during production, especially since it can interact with other devices (the author of the video is max gladkiy).
Therefore, in order to carry out the procedure for winding the speedometer, you will need not only to send a signal from the speed controller, but also to reconfigure some devices. It should be borne in mind that the process of accessing the device is determined in accordance with the model of the machine, as well as the year of manufacture; everything here is individual. Accordingly, adjusting the readings may be problematic, but it is possible. If you don’t know how to wind up an electronic speedometer, you will have to use a special device. We will describe the types of such devices below.
Instruments and devices for winding
Most manufacturers equip cars with original electronic speedometers; rewinding mileage can be problematic. As a result, various versions of devices have been created that can be used to adjust mileage. Device circuits can be assembled based on microprocessor boards or discrete components.
CAN twister
CAN twister disassembled The CAN spinner is a device for operating modern vehicles. It should be taken into account that CAN is a special bus through which pulses are exchanged between blocks of electronic devices of the machine. And the circuit involves the use of a special connector for diagnostics. Through the connector, knowing the exchange protocol, the car owner has the opportunity to gain access to individual electronic devices.
Thanks to the use of a CAN twister, it is possible to adjust the contents of the necessary cells in the memory of the control unit in order to set the required twisted mileage. Operating a CAN spinner is the main way for car resellers to rewind the distance traveled. Using modern diagnostic equipment, detecting changes in memory cells is problematic.
Pulse
The pulse twister is used in foreign-made machines that are not equipped with a CAN bus. The device should be connected via the OBD2 diagnostic connector. When the knob is in use, the odometer receives signals that simulate impulses from the speed controller. The mileage readings change.
Speed generator
The speed generator allows you to simulate the operation of a speed sensor. Together with the controller, it is necessary to connect a generator that produces a sequence of signals that are sent to the odometer. The generator changes the odometer readings. The operation of such a device is relevant in electromechanical speedometers on UAZ, VAZ and Russian-made cars manufactured before 2006.
Sometimes when operating a car, it becomes necessary to adjust the speedometer readings upward, in simple terms, “wind up the readings.” In order to do this, a large number of different devices are currently sold at a variety of prices, and for those who are friends with a soldering iron, there are many circuits on the Internet that are offered to solder themselves.
For a finished “winder” they often ask for several thousand rubles, but in order to solder it yourself, you still need to purchase radio components and spend some time assembling the device. Don't want to waste money or time? And it is not necessary! Due to numerous requests from drivers, a special revolutionary method of winding a speedometer using a regular computer fan was developed in the workshop of a traveling mechanic.
We will need a computer fan “cooler”, to which 3 wires fit. Absolutely any fan with a 3-wire connection is suitable, from the power supply, from the processor, from the video card - from anything. Such a fan has a Hall effect tachometer inside, exactly the same as is found in car speed sensors.
We take such a fan, remove the connector from the speed sensor and connect the fan according to the diagram. The speed sensor in a car is located on the gearbox, and in 4x4 jeeps it is on the transfer case. We remove the connector and connect the fan instead of the speed sensor, turn on the ignition and let's go! The fan should start spinning and the speedometer should start adding up kilometers. The purpose of the speed sensor pins for most cars is shown in the diagram; do not forget that the female connectors are mirrored. To ensure correct connection, check the plus and ground contacts with a tester; when the ignition is on, they should have + 12 volts.
Is everything sealed and the connector cannot be removed? No problem, we thought about that too! Extend the power wires from the fan so that they are enough to reach the battery and connect the fan to the battery directly. Attach a needle to the fan signal wire and carefully pierce the insulation of the signal wire from the speed sensor in an inconspicuous place and connect the fan signal in parallel. But with this winding method you will have to tinker a little. The fact is that the sensor outputs are made according to the “open collector” scheme, and if the magnets in the standard sensor are in the position where the output switch of the speed sensor is open, then the winder will not be able to work. What to do? You need to catch the moment when the standard speed sensor key closes, and only then start the winder. How to do it? The surest option is to jack up the rear wheel and turn it smoothly to catch the moment when the winder starts working, but you can try and push the car a little at a time, although this may be a little difficult. Do not forget that in any case the ignition must be turned on to start the speedometer itself.
Please note that different fans have different rotation speeds, the speed of the fan is written on a sticker, naturally, the faster the fan, the faster you can wind up the required readings, but meanwhile, in some speedometers protection has begun to be found against those who are too impatient and at too high a winding speed The speedometer stops counting. What to do in this case? Just find a slower fan.
Where can I get a suitable fan? Yes, anywhere, pick it out of a faulty computer, ask a friend, find it in a trash bin, buy it in a store. Coolers are available in any computer store, the price for them starts from 100 rubles, and finding a fan is much easier and cheaper than buying or soldering a “winder”.
And this... Don't steal a lot, okay? :)
