Lada Priora (2013+). Removing the clutch pedal position sensor for a VAZ-21126, -21127 engine
Remove the clutch pedal position sensor to replace it. Inside the car, under the instrument panel.
. remove the sensor wiring harness block holder from the hole in the clutch pedal bracket (for clarity, shown with the steering column and instrument panel trim removed).
Remove the sensor from the two holder pins.
Install the sensor and clutch pedal in reverse order. Tighten the clutch pedal bracket mounting nuts to a torque of 10-12 N m.
Depending on the position of the clutch pedal and the brake signal switch, the controller is able to distinguish the position of the pedals. In this article, special attention will be paid to the Kalina brake pedal sensor, as well as the clutch sensor.
Description of the brake pedal sensor
Below we will find out how it works and how to replace it.
Purpose, location and operating principle
The essence of the system is that when you press on the brake, the piston in the cylinder begins to move. After this manipulation, fluid enters the brake system from the intake valve. It passes through the pipelines towards the main wheel mechanism, thus creating a suitable situation for the pads to move towards the wheel discs and drums. As a result, contact and subsequent braking occur. The controller itself turns on the brake lights.
Brake end piece
Typical malfunctions and methods for their elimination
When “communicating” with a car, you can encounter various problems, but there is the most common and annoying problem. This problem is called error P0504, or otherwise “Brake pedal sensor mismatch.”
This malfunction often slows down the car. To solve this issue, you need to release the brake pedal and adjust the gap in the position sensor.
Operating principle
This part is the simplest normally open limit switch. The contacts close only when the limit switch tab is mechanically pressed, which is produced by the plastic protrusion on the clutch pedal.
Due to the simplicity of the design, there are no requirements for pinout of wires; it can be connected in any way.
The purpose of the part is to transmit a signal to the ECU (engine control unit) that the driver has depressed the clutch, thereby disconnecting the load from the engine. Since the controller receives data from the crankshaft position sensors and speedometer (on the gearbox), it considers the engine to be loaded and issues the appropriate injection commands. When the load is removed by pressing the clutch, there is too much fuel, which is why the engine smokes and tries to sharply increase speed. The controller reacts and reduces the flow, but since this happens in addition to the algorithms embedded in it, the engine operates in a non-optimal mode. The ECU perceives this as an error, generating the appropriate code and lighting the “Check Engine” lamp. To avoid such a scenario, a control element has been introduced into the control system, informing the ECU that the load has been removed.
Instructions for replacing the brake controller
- Pump out the liquid.
- Place the vehicle on a support stand and remove the wheel.
- Use a wrench to unscrew the two wheel pins.
- Remove the brake drum.
- Then, using a screwdriver, pull out the hook of the upper tension spring and remove the part. Perform the same manipulation with the lower tension spring.
- Then remove the front pad and spacer bar, while disconnecting the pressure spring and lower the pad.
- Remove the shoe lever from the parking brake hole, straighten the cotter pin and remove it from the parking brake drive.
- Remove the washer and lever.
- Install a new block and assemble the part in the reverse order.
Rear disc brakes on Lada Kalina
Description of the clutch pedal sensor
What kind of device is this and how to replace it is below.
Purpose, location and operating principle
The clutch sensor is installed directly on the clutch pedal. It influences engine control with an electronic gas pedal and provides a convenient and flexible control scheme for machine modes. On its own, it looks like a nondescript switch that has on and off modes.
Typical malfunctions and methods for their elimination
If the controller does not detect signals from the clutch, then there is a risk of error 0830. The occurrence of this problem is usually a malfunction of the clutch sensor or a short circuit or open circuit. To correct this state of affairs, it is necessary to identify the reasons. That is, inspect the contacts for breaks or corrosion.
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!
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.
Debugg
Alas, as practice shows, at the moment this sensor is not always on sale. But you need to remember that the most common malfunction is the separation of the wire from the limit switch contacts. And they are easy to solder. In general, first you need to visually make sure that the pedal pusher presses properly on the limit switch. Visually check the condition of the wires. 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.
The popular Priora was designed in the spirit of the times, so the computer even controls such a unit as the clutch. The electronics do not control the process of turning the clutch on and off, but the clutch sensor on the Priora, installed under the clutch pedal, collects information about the position of the pedal. This data enters the electronic engine control unit and is used to optimize engine operation depending on the driving mode, and also makes it possible to use cruise control on the car.
Clutch pedal position sensor VAZ
On the latest models of VAZ cars equipped with an electronic gas pedal, a clutch pedal position sensor . Let's consider why it is needed, the principle of operation and possible malfunctions.
Where is the clutch sensor installed?
The clutch pedal position sensor on VAZ is installed directly on the clutch pedal bracket; it can be seen by looking under the steering column.
The clutch pedal position sensor is one of the elements of the engine management system with an electronic gas pedal. This sensor provides a more flexible control scheme for engine modes. It simplifies the process of starting to move, eliminates “drops” and jerks of the car when changing gears in the manual transmission, and also allows for a reduction in fuel consumption.
By providing information to the engine controller about the moment the clutch is engaged and disengaged, the clutch pedal position sensor allows it to reduce or increase engine speed at the right moment, as well as adjust the ignition timing.
The clutch pedal position sensor is an ordinary limit switch with two positions - “on” and “off”.
Its normal position is open, that is, it turns on only when the clutch pedal is pressed.
Operating principle of the electronic engine control system (ECM)
Communities Lada Priora Lada Priora Club Blog Micro FAQ 2. Checking the functionality of the expansion tank cap
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.
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
A color Check Engine indicator is installed on the front panel of the Granta, which notifies the car owner about a breakdown of the clutch sensor.
The element lights up orange or reddish and indicates the need to check the operation of the pedal and its addition. Problems may also be noticed during sudden changes in speed during gear changes. Such phenomena will indicate one of the following breakdowns:
1. Incorrect position of the pedal relative to the floor (the need to adjust its height).
2. Damage to the pedal sensor.
3. Disturbances in the circuit, incorrect closure of contacts.
Some car owners even complain that the clutch pedal on the Grant clicks
So it’s not the pedal that clicks, but the sensor.
In this video you can see the sensor larger (and the play near it)
The alarm can be replaced independently, but the contractor should remember to be extra careful in performing the work and purchasing the correct sensor. There are two types of elements installed on Lada 4X4 and Grant/Kalina/Priora.
When repairing Granta, you will need part number 1118-3720015, so when purchasing you should follow the index from the catalog. It is worth considering that spare parts can not be purchased from all suppliers, so it is better to immediately contact official dealers.
Once a new Lada Granta clutch sensor has been purchased, you can begin replacement. First you need to remove the terminal from the battery for safe repairs.
Next, you will need to remove the wire clamp from the hole on the pedal bracket (it is pulled out of the hole with some force). Then the front panel harness block and the sensor block itself are disconnected. The spring on the bracket supporting the sensor is pryed up and removed from the element.
Unscrew the two screws on the pedal bracket that secure the signaling device. After removing the side support of the sensor, it is removed from the bracket along with the holder plates.
They will need to be reinstalled on the new meter, after which the previously purchased Grant clutch pedal position sensor can be mounted in the reverse order. The work is not difficult, but requires careful removal of both the spring and the holders themselves.
If performed carelessly, the integrity of the structure may be damaged and the purchase of lost or damaged parts may be necessary.
