In accordance with the instructions supplied with the car, error p0504 on the Lada Granta indicates a malfunction or a certain problem with the brake pedal sensor. Most often, this kind of error occurs when the above sensor or its contacts located inside fail.
Error P0504 on VAZ cars
There is a problem that ruins the life of pretty good cars from the Kalina-2 series. I have a hatch, automatic. It's a normal car, it runs well, it's quite comfortable, there are no special problems.
But there is a problem that ruins life! This is error P0504 “Mismatched signal from the brake pedal sensors.” What's happening. When you are trudging through a dense and long traffic jam, you almost always drive on the brake pedal. You won't stop, but you won't accelerate either. It is at this moment that the error pops up. AvtoVAZ fights back, saying the driving style is incorrect. Great, but this is nonsense! Why doesn’t Mitsubishi give me such an error in the same situation? Well, okay, if it would just display an error and just reset it and that’s it. But the situation tends to get worse. It is expressed in the fact that the floating contact in the sensor over time begins to hang in a closed state, to become welded, simply put, and when you release the brake pedal, the car does not respond to the gas pedal and only after slamming your foot on the brake pedal, the contact falls off and the car starts to drive. Not only do you turn into a nuisance on the road with this behavior of the car, but also a dangerous nuisance, because the car can simply jerk when the sensor is triggered. As a result, a sensor costing 170-200 rubles makes a car worth 450,000 rubles stupid.
I disassembled the sensor, I categorically did not like how it was built inside, with a crooked spring, with contacts of different sizes, with traces of burning and welding. Moreover, I disassembled the sensor that came from the factory with the car. Over the course of 9,000 km, three of them have already been replaced, and we are planning to install a fourth, because the car again began to feel dull and flash with error P0504. People are starting to put transistors into the sensor circuit in order to reduce the current and voltage, so that the contact does not become welded, and to replace the sensor with sensors from Toyota and Audi. I myself bought a sensor from Audi and will install it. But explain to me what kind of disgusting this is? More precisely, ask AvtoVAZ a question - what kind of disgusting? After all, the problem with the sensor is not only on my car, type the question into Google, go to drive2 and you will see that almost everyone who has a K-2, Grant, etc. I'm struggling with this issue. Is this a design flaw, a bad supplier, etc.? It turns out I'm afraid to use the brakes on my car! Well, isn't it nonsense? What does AvtoVAZ’s answer about the wrong driving style mean? Driving on highways is easy and simple, but the car lives most of its life in the city, and the city means traffic jams! Do you have any driving style in traffic jams?
conclusions
If you often experience this error, then the brake pedal sensor is to blame. You should get a new element in the store (or contact an official dealer, since this malfunction is a warranty case if the car’s warranty has not yet expired), since on the automotive goods market this spare part costs about 200 rubles. And install it in a certified service center, an official dealer, or if you have a certain skill, you can perform the operations yourself.
Source
Causes and symptoms of malfunction
Most often, error P0504 worries owners of Lada: Grant, Priora, Kalina and other VAZ cars with an ECU. Often a defect appears on GAZ cars, for example, GAZelle NEXT. But owners of foreign cars are less likely to contact the service to eliminate error p0504 and replace the sensor (frog). Most likely, the quality of foreign spare parts is much better. What symptoms indicate that the brake pedal sensor is faulty:
- The engine begins to work unnaturally: it feels like it either stalls while driving, then immediately starts.
- The traction disappears at around 40 km/h, but after applying the gas, the former agility is restored. Then the defect appears again.
- The brake lights do not light up, or on the contrary they work constantly.
The cause of incorrect operation of the “frog” can be: mechanical damage, oxidation of contacts or wire breakage. Sometimes a failure occurs due to the burnout of both brake light bulbs. Due to the listed defects, an error appears in the system under code p0504. It can be removed, but it will appear again soon.
What to do if it is not possible to purchase a sensor
It also happens that error p0504 appears at the most inopportune moment, for example, when you are in some outback and it is not possible to purchase a new sensor.
In this case, you should remove the same sensor and try to disassemble it. It is quite possible that the contacts in it simply burned out. A breakdown of this type is not uncommon, especially on the Lada Granta.
But there is another, fairly common reason for such a breakdown. This is a spring that has become so stretched over time that it can no longer perform its intended functions. To fix this problem, simply replace the spring.
And in conclusion, I would like to note that if error p0504 appears on the on-board computer of your Lada Granda quite often, then we can say with almost 100% certainty that the brake sensor is to blame.
To eliminate a constantly recurring problem, you should simply purchase a new sensor from a specialized store. It is very noteworthy that if your car is still under warranty, you can contact an authorized dealer to fix the problem, since the problem is covered under warranty.
If you do not have such a desire, simply replace the sensor with a new one. It will cost you about 200 rubles. Agree, quite a small amount of money, for the sake of saving which, it may not be worth contacting the service center with a warranty card.
By the way, you can also replace this element of the car either at a service center or with your own hands. But for the last step you will need the appropriate tool and some skills.
Owners of LADA cars with an electronic gas pedal may encounter error P0504 (mismatch of brake pedal sensors). Along with it, malfunctions in the engine may appear (stalls, speed fluctuates, does not start, etc.). Most often the cause is the brake pedal position sensor (brake light sensor or frog).
The brake pedal position sensor and brake light switch are mounted in one housing. Most often, the cause of its malfunction is a broken spring. In this case, you can repair the sensor yourself by replacing the spring with a new one. Or replace the sensor with a new one.
Symptoms of malfunction
The main driver symptom of P0504 is the MIL (Malfunction Indicator Light) illumination. It is also called Check engine or simply “check light”.
They can also appear as:
- The brake lights will either remain on continuously or not illuminate when the pedal is pressed.
- It will be difficult or impossible to move.
- The car may stall while moving if you press the brakes.
- With this problem, cruise control cannot be activated.
How to Troubleshoot or Reset Trouble Code P0504
Some suggested steps to troubleshoot and fix error code P0504:
Diagnosis and problem solving
The brake fluid level is checked periodically: daily during vehicle operation, during each maintenance, after operations to pump the brake system hydraulic drive and replace the brake fluid, when a warning lamp lights up on the instrument panel, indicating an insufficient level of brake fluid in the master cylinder reservoir.
1. We prepare the car for work.
2. Use a rag to remove dirt from the master brake cylinder reservoir.
What is error P0504 on Lada Granta
Error P0504 is in any case associated with the brake pedal sensor. Calling it a sensor, however, is not entirely correct, since it is a regular limit switch with two contacts. A simple device with a spring-loaded contact pad that supplies voltage to the brake light lamps when the brake pedal is pressed.
Brake pedal limiter Lada Granta
The problem is that on Grants with an automatic transmission and an electronic gas pedal, the readings of this switch are taken into account when calculating the transmission algorithm.
This means that when the limit switch contacts are closed, a signal is received from the ECU to the throttle valve, which seeks to limit engine power.
In this case, the brake lights may light up, or they may not work at all if the lamps are working.
In this case, the cause of error P0504 is a broken brake light switch spring.
Causes of error P0504 Granta
An error regarding an incorrect signal from the brake pedal switches occurs in some cases solely due to an unadjusted limit switch. The fact is that after flashing the electronic control unit M 74 and M 74.9.
7 engineers made some adjustments to the engine control algorithm, which ultimately should have had an impact on reducing the amount of harmful emissions.
In practice, changing the firmware only strangled the engine and caused a bunch of problems with sensors and limit switches.
The end switch and its catalog number
The Lada Granta has both a brake pedal position sensor, a limit switch and a brake light switch installed in one housing. The first reason for the appearance of error P0504 is incorrect adjustment of the position of the sensor housing.
How to adjust the Grant brake pedal sensor
The sensor is fixed to the bracket with two nuts screwed onto a plastic housing. The upper nut is responsible for the position of the sensor relative to the brake pedal. The nominal gap between the pedal platform and the heel of the sensor should be 2-3 mm when the pedal is fully released.
Adjusting the brake pedal sensor gap
If there is no gap, the sensor may be triggered at the slightest touch of the pedal, which leads to error 0504 and activation of the Check Engine warning light.
After simply adjusting the gap with two keys, we start the car and look for errors.
P0504 will not reset immediately, but if the problem was an adjustment, the error code will disappear after 10-15 minutes of running the engine at idle speed. If this measure does not help, we check and look for the reason further.
Broken brake pedal sensor
One of the likely reasons for the appearance of this error on Grant is a malfunction or defect of the brake pedal end itself.
The quality of AvtoVAZ components has always left much to be desired, and this happened this time too. Even domestic sensors, as a rule, are equipped with cheap Chinese springs and contacts.
As a result, the springs break and the contacts simply burn out after 5-8 thousand mileage.
The left sensor is not working, the rod does not return to its original position
The sensor rod does not return to its original position (due to the spring), so the system perceives the signal from the sensor as a signal that the brake pedal is pressed. In this case, the ECU interprets the situation as simultaneous pressing of the gas and brake pedals, thereby forcibly closing the throttle valve.
In some cases, replacing the brake pedal sensor solves the issue with error P0504 on Grant, but if a known-good sensor after installation did not lead to any results, we dig further.
Lamps and wiring - causes of error 0504
And again about the components. If it were not for the reviews of Lada Grant owners, it would be difficult to accuse a working brake light of sabotage. But the fact remains a fact. The working spiral of a single-contact brake light lamp is stretched, and the antennae that hold it close with others. In this case, replacing the stop lamps will help get rid of error P0504.
Burnt contacts on the limit switch itself, poor contact on the lamp base, shorted wiring in the brake light power supply network - all these are possible causes of the error code and Check Engine message. This is easy to check.
If there is a voltage in the region of 0.12-0.05 Volts on the lead wires at the brake light, you need to look for a short circuit or oxidation on the boards or terminal blocks.
There should absolutely be no voltage on the supply wires.
How serious is the P0504 code?
It is very dangerous when the brake lights do not work. The car driving behind you cannot correctly assess the situation and your actions, which can lead to an accident. Likewise, if pressing the brake pedal does not disengage the cruise control system, the consequences can be very dire.
What needs to be repaired for error code P0504?
In most cases, fixing the cause of the P0504 code is quite simple. Here are some of the most typical situations:
- replacing a burnt out light bulb;
- repair or replacement of wiring or connectors;
- replacing the brake switch;
- replacing a blown brake light fuse;
What to do if the sensor is not on sale?
But what to do if this spare part is not for sale in the outback? It happens. Then you need to remove the sensor and disassemble it. The contacts may be burnt, this is a disease of this sensor!
The arrow marks the spring and the contact connector of the sensor.
Another common problem is that the spring loses its functionality and needs to be replaced!
Diagnosis of the error
Determining the error code using an OBD-II scanner, it is cleared. All possible causes must be checked. From simple to more complex. You need to start with fuses and light bulbs. If the problem persists, you need to check the brake light switch, wiring, and connectors.
Common diagnostic errors
Often, when the brake light comes on, it is not the driver who assumes that the problem is a burnt out bulb. Replacing the light bulb may not solve the problem, because the source could be the wiring or switch. If the fault is in the switch, then replacing the fuse will do nothing. The new one will also burn out.
Symptoms
This is what the culprit looks like, due to whose error the car can behave extremely unstable at idle, as well as when revving above 1500 rpm.
Although this detail is small, it can cause quite a lot of trouble.
Carrying out work on dismantling and repairing the sensor
In most cases, repairing a sensor does not take a significant amount of time and does not require the car owner to have either specific knowledge or the use of complex tools. You can do it yourself without going to a repair shop.
First you need to disconnect the negative terminal from the battery, and then move to the driver’s seat in the car. Move the front seats back as far as possible and remove the interior carpet. The sensor is located next to the brake pedal; to remove it, you will need to disconnect the clamp and the block with wires from its connector.
Carefully loosen the fastening nut and carefully unscrew the body of the part, then disassemble it. This element is a two-piece element, and both parts are held in place with latches.
There is a spring in the inside of the sensor, which is often what causes problems. Replacing a faulty spring with a new one, having the same number of turns and suitable dimensions, most often helps to eliminate the problem.
Having completed the repair, reassemble the element by performing the manipulations you performed to disassemble it in the opposite sequence, and then install it in its original place, and if necessary, adjust it. The part is tightened until the brake pedal goes down, after which it is turned 90 degrees clockwise and secured with a lock nut. As a result, with the brake pedal lowered, the switch rod will be in a recessed position, and when you press it, it will go beyond the boundaries of the switch body.
Next, start the engine and wait at least ten minutes; if the error does not appear, you have correctly identified the cause of the problem. If error P0504 appears again, adjust the sensor; if this error continues to appear, the part will need to be replaced.
How to change the clutch sensor on a Priora
We study, check and change brake and clutch pedal sensors on Kalina and Priora
Well, the widespread computerization of cars has reached such a unit as the clutch. No, the electronic unit does not yet control the process itself, but it already controls this process. To do this, a sensor is installed under the clutch pedal to monitor the progress of the clutch.
Operating principle of the electronic engine control system (ECM)
In a modern car, all process control, except for the rotation of the steering wheel, and even then, is entrusted to the computer, or Electronic Control Unit (ECU). It contains a program with many different tables.
In general, the ECU receives data about the state of the car, speed, revolutions, and activated mechanisms from a large number of sensors.
Based on the results of these observations, the ECU, using these tables, includes certain ignition modes, fuel supply and other executive functions.
The role of the clutch sensor
It would seem, what does the clutch have to do with it? And here's what it has to do with it. When the clutch engages, the most sensible thing to do is to reduce the engine speed. But not to idle, but according to the speed of the car. This is not always available to the driver, especially a beginner. And here the computer will come to the rescue. Reacting to the signal from the clutch sensor, it can independently adjust the engine speed.
Important! In addition, in accordance with the Priora speed sensor, the ECU can obtain information about the serviceability of the clutch.
Summarizing the above, we can say that the presence of a sensor on the clutch allows:
- saves fuel;
- make driving easier;
- monitor the serviceability of the coupling;
- increase its service life.
Therefore, its serviceability is an important factor in the Priora control system.
Design and location of the Priora clutch sensor
In principle, this is the simplest switch. In the position when the clutch is disengaged and the pedal is not pressed, the sensor circuit is open. If you press the clutch drive, the limit switch of the sensor closes and the signal “clutch is on” is sent to the ECU.
It is located on the clutch pedal mounting assembly, where the very tip of this pedal is located opposite the sensor end switch.
Symptoms of this part being faulty
Since this element is connected to the ECU, it reacts to its failure first of all. That is, it gives peculiar signals that are reflected on the instrument panel and are noticeable in the behavior of the Priora when driving.
- turning on the “Check Anger” light;
- twitching when starting to move;
- a sharp drop or, conversely, an increase in speed when the clutch is engaged.
There can be three malfunctions in total: a breakdown of the sensor itself, a break or short circuit in its circuit, and incorrect adjustment of the position of the limit switch on the pedal.
Attention! Only Prioras, which have an electronic throttle, are equipped with such a device. Cars with a regular throttle cable do not have one. It is also available for all-wheel drive VAZ
It must be remembered that these are two types of sensors, and they are not interchangeable!
It is also available for all-wheel drive VAZ. It must be remembered that these are two types of sensors, and they are not interchangeable!
In general, the “Check” warning lamp lights up in cases where the ECU has not received a signal within 2 seconds when starting from a stop or during four shifts on the move without a signal. Accordingly, the signs mentioned above appear.
And only after that remove it. This is a simple procedure. The clutch sensor is attached with only two self-tapping bolts, and it is not difficult to remove it with a short, shaped screwdriver. Well, then, on the spot, decide whether to start going to retail outlets in search of a new unit, or try to restore the old part. Well, put it in its place.
After finishing work on the Priora, do not forget to reset the ECU error memory.
How to remove and install
Disconnect the negative terminal of the battery. Move the driver's seat as far back as possible, lift the steering column up, and remove the carpet. The sensor is located near the brake pedal, to remove it you need to remove the block with wires (by snapping the latches), and then:
- (Priora, Kalina, Granta, Niva 4x4) loosen the lock nut and unscrew the sensor.
- (Largus, Vesta, XRAY) turn the sensor counterclockwise 90 degrees and remove it from the bracket.
Installation of the brake pedal sensor is carried out in reverse order. Adjust it if necessary. We tighten the sensor until the pedal goes down. Then turn it out a little (counterclockwise 90 degrees) and secure with a lock nut. It should be so that when the brake pedal is released, the switch rod is completely “recessed”, and when the pedal is pressed, the rod should completely come out of the switch body. The process of removing and installing the sensor is also shown in the video:
Brake pedal sensor Lada Kalina
The Kalina brake pedal sensor is a technical device that is used to monitor the degree of impact on the brake pedal. Quite often, car owners of the VAZ line complain about breakdowns or incorrect adjustment settings of the product.
Fortunately, the process of adjusting or replacing a part is not very difficult if certain nuances are observed.
Performance diagnostics
Checking the functionality consists of: 1. Testing the product with a multimeter. 2. Disassembly and visual inspection of the internal components of the part.
3. Replacement sensor is not known to be good.
The first method involves alternately measuring the contacts of the dismantled sensor. The point is to check each contact individually and in pairs (second and third contact). This is quite convenient to do, since at the place where the contact chip is connected, all connectors are numbered.
The second method is used to identify faulty or deformed internal elements of the product (in most cases, damaged springs).
There should be no traces of oxidation or contamination. If there are any, clean them out.
The third method is quite simple and trivial. Install a new part to replace the one whose serviceability you doubt.
When the system is restored to normal operation, the malfunction indicator (check engine) should go out (if it does not disappear within 15 minutes, the error should be reset manually).
Signs of a faulty brake pedal sensor Lada Kalina
In order to understand that the Kalina brake pedal position sensor is the cause of the vehicle’s incorrect operation, pay attention to the following signs:
- presence of error “P-0504” on the dashboard;
- a significant decrease in power and engine responsiveness when pressing the gas pedal;
- increase in engine speed (short-term) when changing gears.
Main causes of sensor failure
In order to identify the reasons that interfere with the normal operation of the device, it is necessary to disassemble it and carry out a thorough inspection to identify deformations and damage. The following defects are most common:
- the internal (small) spring, which is located on the rod, shows signs of deformation or distortion;
- the contact terminals of the product have physical oxidation;
- backlash of the moving contact;
- Quite low quality of factory production (defective, flimsy internal elements of the device).
Adjusting the brake pedal sensor Kalina
If the sensor is in good condition, and incorrect operation of the internal combustion engine continues to bother you, try adjusting the product yourself
Please pay attention to the following features:
- The sensor must be screwed in clockwise until the brake pedal begins to move down. Then you will need to slightly unscrew the product and secure its position using the fastening nut.
- The result should be such that when there is no action on the pedal, the sensor rod is recessed into the housing, and when the pedal is applied, on the contrary, it is completely released from the housing.
- As for the working gap, it is adjusted using two nuts (one at the top, the other at the bottom). The adjustment is carried out using the upper nut, which is tightened, and the lower one, on the contrary, is unscrewed. The entire process is carried out until the button is completely recessed into the body when the brake pedal is applied. However, you should not overdo the adjustment; in other words, you should leave a small gap or travel margin (approximately 2 to 5 millimeters).
Removal and installation
Replacing the brake pedal sensor on Kalina is carried out using an adjustable wrench set to “19”. The sensor itself is located above the brake pedal under the steering column. Conventionally, the removal stages can be divided into 5 steps:
- Before starting electrical work, it is recommended to disconnect the negative wire (terminal) from the battery.
- Then you need to move into the car interior on the driver’s side. For ease of operation, it is advisable to move the driver's seat in the opposite direction from the dashboard.
- Find the location of the sensor. Find a contact chip with wires. Press and hold the 2 plastic fasteners located on both sides of the chip. Pull the connector out of the sensor connector.
- Take the wrench in your hands and loosen the fastening nut. After which the sensor can be unscrewed freely.
- The installation process is similar to the removal procedure, except that you will need to make adjustments (tuning), the process of which is described in detail in the previous section.
What are the reasons that cause sensor failure?
A detailed examination of the essence of the problem that arose, when error code 0504 appeared, will allow us to determine the list of reasons. This refers to the disassembly of the ill-fated sensor in the LADA Granta car. Three clips serve as an obstacle to this noble procedure, preventing the component from being easily disassembled. After overcoming this “barrier”, it becomes possible to observe the real reasons that caused the breakdown:
- deformation of the smaller (of 2) springs located on the rod;
- different heights of the contacts of the designated sensor;
- poor material (steel) used for the manufacture of terminals;
- presence of play on the floating contact element.
“Ringing” can be used as the initial stage of diagnosis. Each of the contacts must be subjected to this action separately, and then in pairs (“2nd” with “3rd”). The experience of LADA Granta owners indicates the presence of a dull tone during ringing, which confirms the malfunction of the contact group. Serviceable contacts are characterized by a distinct ringing “squeak”.
The operation of the brake pedal sensor is based on the following technology:
- the rod is located inside the element and presses the floating contact (when the pedal is released) to the upper group;
- the rod is again inside, but the pressure is applied to the lower group (corresponds to the depressed position of the pedal).
This principle is not complicated, but this does not improve the performance of the sensor. The main problem lies in the bent state of the floating contact. This kind of defect can occur due to this contact getting caught on the spring element, which provokes the sensor to send a signal to the LADA Granta on-board controller about the allegedly activated brake, which is why error code 0504 occurs.
Why does the indicator work?
If the handbrake lamp does not light up at all when it is activated, the reason is most likely trivial:
- diode burned out;
- wires are broken.
This small problem can be fixed at any car service center for literally pennies. In principle, there is nothing wrong with the diode not lighting up. But its repair cannot be delayed for long. After all, in case of real problems with the brake system, he will not be able to notify you about it in time.
It is much worse if the handbrake indicator is constantly on or lights up while driving. In this situation, it is extremely undesirable to operate the car without understanding the strange behavior of the diode.
The most common situation is when the handbrake light is constantly on. The reasons for this can be very different: from harmless clogging or oxidation of the contact sensor to a stretched cable in the handbrake system.
Reasons for the error
A P0504 code may mean that one or more of the following problems have occurred:
- Short circuit in the brake light switch signal circuit.
- There is a malfunction in the brake light switch, the failure of which is due to wear.
- There is a problem with the fuses, sometimes they fail due to moisture getting into the circuit or the brake light burning out.
- If the wiring harness, or more specifically the connectors, are loose or disconnected, it will cause a correlation problem between the switch and the ECU.
- And of course, the ECU itself could fail.
How to change
The sensor is located slightly above the brake pedal lever. To find it, you need to look under the torpedo. On Lada Priora, Grant and Kalina, a 19 mm open-end wrench will be required for dismantling. The replacement process looks like this:
- Remove the negative terminal from the battery
- Disconnect the 2 plugs from the sensor.
- Loosen the locknut with a 19 mm wrench (remember its approximate location).
- Unscrew the sensor counterclockwise.
- Install a new one and secure it with the adjusting nut.
- Connect the battery.
- Turn on the diagnostic equipment and clear the old error P0504.
The old sensor is quite repairable. In most cases, the cause of the malfunction is a broken spring. If you disassemble the body and install a new spring, the “frog” will work again.
Car owner's comment: On my Lada Grant, a spring broke in the sensor and began to close the contacts of the limit switches. When I left the car overnight, the ignition did not seem to turn off, which is why the battery ran out completely several times. I bought a new battery, but the problem did not go away until I made diagnostics and replaced the sensor. At the same time, the Check Engine did not light up.
Carrying out pre-installation diagnostics
Before purchasing and installing a new sensor to replace a broken one, it is recommended to diagnose the old sensor and, if there is a breakdown, fix it yourself. There are two nuts on the sensor body, the first of which is located at the bottom, and the second at the top. The nut located at the top should adjust the clearance of the part (sometimes it is set incorrectly). This leads to disruption of the normal functioning of the button, therefore, you will need to set the gap so that there are no obstacles to its normal movement.
Which one to buy
Experts and service workshop specialists recommend purchasing an original brake sensor. It is of better quality and lasts longer.
Table 1. Price of brake pedal position sensor
| Manufacturer | Code | Cost, rub. |
| AvtoVAZ | 11183720010 | 170 |
| Avar | 2113720 | 180 |
| AMY | 11183720010 | 95 |
Before changing the “frog”, you can “ring” it with a tester to make sure the part is working.
Removing the clutch pedal position sensor Lada Granta
Lada Priora Sedan Priora white cloud 163 Logbook Starts and immediately stalls in cold weather
Tools:
- Medium flat screwdriver
Medium Phillips screwdriver
Parts and consumables:
Clutch pedal position sensor
Note:
Remove the clutch pedal position sensor to replace it.
The sensor is located in a hard-to-reach place under the instrument panel.
Location of the clutch pedal position sensor.
1. Remove holder 1 of the sensor wire block from hole 2 in the pedal assembly bracket (for clarity, shown on the removed pedal assembly).
2. By pressing the latch of the instrument panel wiring harness block, disconnect the wiring harness block from the sensor wiring block.
3. Using a screwdriver, remove the hook of the pressure lever spring from the hole in the sensor holder.
4. Using a Phillips screwdriver, unscrew the two self-tapping screws securing the sensor holder to the pedal assembly bracket, and remove the holder with the sensor assembly.
Note:
Removed clutch pedal position sensor.
5. Remove the sensor from the two holder rods.
6. Install the clutch pedal position sensor in reverse order.
The article is missing:
- Photo of the instrument
Photos of parts and consumables
How to replace the sensor?
If you have received error code 0504, to perform this simple procedure you will need to provide access to the pedal bracket on the Lada Granta, on which our “ill-fated” sensor is actually present, or rather, above the pedal assembly. A well-carried out replacement will guarantee long-term operation.
Let's get started.
- Remove the negative terminal from the battery terminal.
- We press out the plastic retainer (use a screwdriver).
- Next, remove the block with wires.
- Turn the sensor in a clockwise direction.
- We remove the faulty part.
We install the new component on a Lada Granta car in the reverse order. Don’t forget to first release the pedal to be able to insert the new product into its socket. We turn the component against the direction of the arrow until the corresponding click appears.
About alternative sensor options
Since domestic “devices” for the Lada Granta car are not able to prevent an unpleasant situation, it is possible to use other devices that act as analogues. Such a component could be a brake light switch from Volkswagen, or more precisely: “FACET 7.1126”. This switch is slightly more expensive than the “native” one (560 rubles) and has the following features:
- four contacts;
- threaded leg with a similar diameter of 12 mm.
To successfully install the indicated analogue, you will need to acquire an adapter for the terminals.
Summarizing
Summarizing what has been said about the possible reasons that caused the failure and error P0504, it’s time to draw up an indicative checklist according to which you should act when searching for the cause. Once you find the problem, you can reset the error.
- Adjusting the gap in the middle of the brake pedal and limit switch rod.
- Cleaning and repair, installation of a new brake pedal sensor. To do this, you need to check the return of the rod, as well as the spring stiffness. The number of the brake pedal limit switch is 2118-3720010.
- Inspect fuse F23 (the number does not always match).
- Checking and installing sensor lamps.
- Inspect and clean the connections of the rear light, pedal end switch, and so on along the chain.
- Checking or dismantling the on-board computer, as well as flashing the electrical control unit.
Sources
- https://AccBook.ru/to-avto/regulirovka-pedali-tormoza-kalina.html
- https://AutoNevod.ru/obd2-codes/p0504
- https://granta-service.ru/remont/oshibka-r0504-lady-granta-prichiny-i-kak-ee-ispravit.html
- https://kalina-2.ru/otechestvennie-avto/p0504-oshibka-vaz-kalina
- https://avto-o.ru/novosti/p0504-kalina.html
- https://saturn-lada.ru/remont/oshibka-0504.html
- https://osensorax.ru/remont/oshibka-p0504
- https://medwegonok.ru/oshibka-r0504-priora-16-klapanov-kak-ustranit-oshibku/
