On all modern cars, including VAZ models, if you shift the gearshift lever to reverse gear, the corresponding indicator lights up in the lights. If the reverse sensor of a VAZ 2109 or another model is faulty, the light will work intermittently or will not function at all. What could be causing this problem? How to check the device and replace it? More on this below.
Why doesn't the light come on?
Before changing the sensor, you need to figure out whether it really is the problem. The reverse gear may not light up due to the following problems:
- The light bulbs have become unusable. They need to be tested with a multimeter;
- Wiring is damaged. In this case, you will need a multimeter to check all the wires. It is possible that the insulation is damaged, causing a short circuit (short circuit);
- No regulator contact. This happens due to a breakdown at the point of contact between the sensor and the socket. It can be checked visually;
- There is a problem with the fuse. The 2109 reverse sensor may not function due to a blown fuse. On older cars, you need to check element F16 in the block, in others - fuse number 5;
- Sensor malfunction. If, after correcting the problems described above, the lights still do not light up, then the sensor is not functioning.
Installing a laser fog brake light on a car
To install the laser brake light, you do not need any special skills, since it is attached with double-sided tape. Therefore, you can install it yourself (a mounting kit is included with the device).
The laser has two wires - red (plus) and black (minus), which need to be powered from the rear fog lamp or side lights of your car, and the beam will light up when they are turned on and remain on continuously. The laser can also be connected directly through the cigarette lighter.
We recommend: Design and principle of operation of torsion bar suspension
If you connect a laser emitter to the brake light power circuit, then the beam will light up only when you press the brake pedal.
Possible locations for installing a laser brake light:
- Inside the car, in the area of the rear window (the beam will pass through the rear window and be reflected on the asphalt);
- Above the plate with the car number (standard installation location);
- Under the car's bumper or spoiler;
- Under any tail light;
- Behind the bumper on the bottom of the car.
When installing a laser projector on the bottom of a car or under its plastic bumper, you will have to drill two holes to mount the device. After which you will need to adjust the image projection angle.
The angle of the device affects the size of the projected image and its immediate distance from the machine itself. The recommended tilt angle of the projector should be no more than 45 degrees so that the beam is projected onto the road and not onto the car behind.
How to check the sensor
To check, you need to get close to the element. The following actions must be taken:
- Raise the car with a jack or on a lift;
- Remove the engine protection;
- Get to the sensor, which is located on the side of the gearbox housing;
- Put in reverse gear;
- Check the continuity between terminals 1–3 and 2–4, make sure that it is also present at the “neutral”;
- Shift into other gears and check for continuity, there shouldn't be any.
If there is always continuity, the reverse sensor of the VAZ 2109 is faulty and needs to be replaced.
Precautionary measures
Household gas is very dangerous. The main threats posed by propane are:
- Fire hazard.
- Unsuitable for breathing.
- Explosion hazard when the maximum concentration of propane in the air is reached, as well as when the temperature in a closed volume rises sharply.
- During a gas leak, the temperature drops sharply and frostbite is possible.
To preserve the life and health of people and their property, precautions should be taken:
Read also: The height of the mirror above the dressing table
Rules for using gas
- Avoid proximity to open flames and heat sources.
- Avoid the presence of other flammable materials in the work area.
- Eliminate the presence of nitrates and perchlorates near gas equipment due to their chemical activity.
- Do not use the reducer for a propane cylinder if it is damaged or leaking.
Replacement of reverse sensor VAZ 2109
Replacing the reverse sensor on a VAZ 2109 is a simple process. Experienced car owners can do everything without difficulty.
The following actions must be taken:
- Place the car on a pit or a lift; in extreme cases, use a jack;
- Remove the (–) terminal from the battery for safety (it is labeled);
- Drain the transmission oil for convenience, otherwise it will leak after removing the product. You will need to unscrew the drain cap, first replacing the container;
- Remove the engine protection;
- Find the sensor, which is located on the side of the gearbox housing, disconnect the terminal from it;
- Unscrew the clamping bolt to “22”. It is located on the crankcase;
- Take a new sensor, lubricate its seal with oil and install it by tightening it by hand and then with the head;
- Connect the wire block;
- Fill with transmission oil. If it has not been changed for a long time, it is better to fill it with a new one;
- Check the lubricant level;
- Install engine protection, remove the car from the jack;
- Connect the terminal to the battery;
- Turn the ignition key, set the lever to the reverse position to turn on the light, check operation.
After all this work, the reverse light on the VAZ 2109 will be in good working order. It is advisable to check the functionality on the go, making sure that it is in full working order.
Replacing a stop repeater with your own hands
If repairing the repeater is not practical, it should be replaced.
The replacement process consists of the following steps:
- Using a wrench, unscrew the fastenings of the rear part of the stop and remove it.
- Then we connect the positive wire of the lighting fixture to the terminal where the brake light frog is located. To do this, you need to run the wire into the luggage compartment, unscrew the trim on the right side, and connect it to the desired terminal. The disadvantage may be a bolt in the luggage compartment.
- Heat shrink should be applied to the wiring. To prevent the wires from dangling, they need to be secured with insulating tape.
- The final step is to check the device for functionality.
Characteristics of the XX controller
This part is designed to reduce the engine warm-up time. During this operation, rubbing parts often wear out quickly. So: DXX is also designed to reduce contact and wear. This device is mounted in the throttle assembly, which is located in the engine compartment on the left side of the engine.
Purpose and principle of operation
Main components of the device:
- stepper electric motor;
- conical needle combined with a rod;
- springy part.
Idle speed sensor As shown in the photo, the device has blocks.
The main mechanism is highlighted in red - the idle speed sensor VAZ 21099 injector. The adjusting part that controls the engine speed is visible in gray. Blue – a device designed to read information about the crankshaft rotation speed. If the operation is idling, the air flow enters the main cylinders through special channels. The green color in this diagram is responsible for comparison in the electronic unit. Here the engine speed is taken into account in accordance with the actual speed.
The coolant temperature sensor also receives the necessary signal. Until the comparison circuit receives the necessary information, the engine will operate at higher speeds. At this time, the air is adjusted using the conical part of the needle. A disruption in the air supply often leads to breakdowns and a complete stop of the motor.
Drawing a conclusion, we can say that a certain amount of air enters the engine - exactly as much as is needed for operation in a suitable mode. This volume is taken into account by a special air flow meter. It transmits information to the controller, which, depending on the value, prepares the mixture at the required concentration. After this, it is injected through the injector nozzles into the vehicle network. You can find out where the idle speed sensor is located on the VAZ 21099 injector in the photo below.
Typical faults
Popular and frequent breakdowns of the VAZ 2109 carburetor and injector idle speed sensor include the following:
- engine malfunction;
- refusal to act when the gas pedal is released;
- uncontrolled idling, even when the engine is warm;
- when the gear is switched off, the engine stalls;
- when the engine is cold, the crankshaft does not increase rotation (video author - Devyatochka.remont).
Examination
It is easy to check the serviceability of the reverse lamps. You need to disconnect the wires suitable for the device, then connect them together (for example, with a piece of wire). If the headlights come on, then the sensor is faulty and needs to be replaced.
Frequent breakdowns are associated with deterioration in the quality of sensor manufacturing. Over time, its tightness is broken, and oil gets inside. Many inexperienced car enthusiasts associate this with different fuel supply systems - carburetor or injector. But this has nothing to do with this malfunction. You just need to monitor the condition of the sensor from time to time.
Where are the fuses for the Lada Granta?
The fuse box is located near the driver's left foot. To open the lid, pull the lower left corner of the lid (No. 1) and release the left locking point, then the middle one (No. 2) and the two right locking points (No. 3 and 6). Then release the top points (No. 4 and 5) and remove the cover.
Installing the mounting block cover is done in the following order: first snap the right side of the cover, then the lower ones, and then the upper ones. Make sure that the fastening elements of the cover are aligned exactly with the metal fasteners.
There are symbols on the plastic cover of the mounting block that indicate what each fuse (F) and relay (K) does.
Causes of failure
Before you start replacing the reverse sensor (RDS), we recommend checking the condition of the rear lights and determining whether the signal may not be working for other reasons.
Possible reason
Your actions
A common and fairly banal cause of problems, which, nevertheless, many ignore. Take out the light bulb, arm yourself with a multimeter and check if they have burned out. Replace if necessary
The problem is no less common, but looking for the source of the problems in such a situation is a little more difficult. You will also need a multimeter, which you need to test the wiring and check the resistance readings
Poor regulator contact
It happens that during operation the contact of the sensor with the socket is broken. Lack of contact means that the device will not work normally. So check its condition
Wiring insulation is broken
If the insulation on the wires near the sensor is broken, this can lead to a short circuit. The result is quite obvious, so check the condition of the wiring and replace it if necessary
Depending on the type of fuse box, check the condition of the corresponding element in the mounting block. On old-style blocks this is fuse F16, and on new-style fuse blocks you should look at fuse 5. If they are melted, they will need to be replaced. But it is also important to determine the reason why the fuse blew
A failure of the reverse control itself may be indicated by a situation where the lights do not light up at all or, on the contrary, light up without interruption. In the second case, the option of burnt out light bulbs is excluded by itself.
Replacing a stop repeater with your own hands
If repairing the repeater is not practical, it should be replaced.
The replacement process consists of the following steps:
- Using a wrench, unscrew the fastenings of the rear part of the stop and remove it.
- Then we connect the positive wire of the lighting fixture to the terminal where the brake light frog is located. To do this, you need to run the wire into the luggage compartment, unscrew the trim on the right side, and connect it to the desired terminal. The disadvantage may be a bolt in the luggage compartment.
- Heat shrink should be applied to the wiring. To prevent the wires from dangling, they need to be secured with insulating tape.
- The final step is to check the device for functionality.
Photo gallery
If a repeater with incandescent lamps is installed on the car, then when connecting a device with LEDs according to the above diagram, the lamp control will not work correctly due to different loads. In this case, you should insert the positive wire into the light bulb control unit and connect it to terminal 54H.
As a brake light, a strip with LEDs can be glued to the upper part along the entire length of the rear window. It needs to be connected to a standard device, and it will work in the same way. It is important to maintain polarity. To make the tape less conspicuous, it can be painted black. Attach the tape using double-sided tape. We check for functionality.
What does the second set of fuse boxes do?
The symbols F1-F20 indicated below in the electrical diagram are the elements that characterize the set of fuses. The electrical circuit in a VAZ-2110 car is protected using fuses based on the specific calculation of the model for the rated current value specified upon purchase.
At the same time, fuses are not responsible for the quality operation of the circuit consisting of a sample battery, a separate type of generator circuit, the ignition system and engine valve starting. To replace a faulty fuse in this mounting block, follow the following plan:
- Find a fuse that has mechanical damage or its body has burned out;
- According to the instructions, determine and eliminate the reason why it turned out to be faulty;
- Install a new fuse using the backup model.
Diagram of direct and reverse acting devices
Direct-type devices have the following operating scheme: propane entering the high-pressure zone presses the valve away from its seat. Propane enters the working chamber, filling it and increasing the pressure in it. It acts on the membrane, compressing the main spring. The membrane goes down, pulls the stem and closes the valve when the operating pressure value is reached. During the use of propane, the pressure in the working chamber drops, high-pressure propane opens the valve again and gas enters the working area again.
Direct action gearbox diagram
In reverse type devices, the valve is opened by the main spring, overcoming the force of the high pressure gas. After the working area is filled and the pressure reaches the set value, the rod moves down, closing the valve. As propane is used, the pressure in the working area decreases and the spring opens the valve again.
Reverse gearbox diagram
Reverse-acting devices are considered more reliable and safe. They have gained popularity in household and professional applications.
Features of the operation of dimensions on the VAZ 2114
Being the ideological heir of the first generation, the “fourteenth” inherited from it many technological solutions, including external lighting devices. Thus, the dimensions on the VAZ 2114 are located in the corner areas of the body at the front and rear, which, according to technical regulations, are included in the general blocks of lamps and headlights.
At the same time, there are several features that should be noted when describing the side lights on the VAZ 2114:
- on/off is carried out by a button in the exterior light control module;
- when the lights are on, the switch is illuminated by a green indicator diode;
- The rear lights of the VAZ 2114, unlike the front ones, light up in red, in accordance with Russian road safety standards.
A dedicated fuse block is responsible for the correct operation of the side lamps on this Lada, which can be found in the engine compartment next to the engine. Accordingly, most often motorists who notice non-functioning dimensions on the left or right side of the car are faced with a failed fuse.
