In detail: do-it-yourself abs repair Chevrolet Aveo from a real master for the site my.housecope.com.
Once the ABS system failure indicator and the parking brake light came on on my dashboard. The specialists told me that there are breaks in the system, so I decided to check all the rear sensors. It is worth noting that one of them has already been repaired by me.
I disassembled the wheels and properly cleaned the sensors from dirt, in the process I used a special cleaner. The previous time I did everything with scotch tape and a knife, but this did not save the dirt from getting inside, although the sensor still fully retained its performance. It is now quite simple to buy new parts and other spare parts on Aveo, there are plenty of them in car dealerships, but it is not so easy to find with the optimal price-quality ratio.
The check showed that the sensors on the rear wheels turned out to be completely serviceable, but since I disassembled, then everything needs to be assembled humanly. The front wheel sensor terminal is located in the engine compartment. In order to gain access to it, it was necessary to bend the rubber seal with pliers. As for the sensor itself, it is attached with a tie. On the right, it was enough to unfasten the clip, but on the left the washer fluid reservoir prevented access, so I had to crawl up to it from under the wheel. This is where I discovered the break in the internal cable.
I took a multimeter and measured the bending resistance of the wire. At first I did not succeed in soldering the wire on the spot, but then I connected the Ippon inverter through the cigarette lighter and achieved what I wanted. By fixing the problem of the left sensor without removing it from its regular place, I saved a lot of time. It is difficult to dismantle the sensor from the hub, it will sour there over time.
Video (click to play).
The work is over, all the difficulties are behind, the Chevrolet Aveo system is functioning normally again. It is noteworthy that the sensor manufacturers were so negligent about the quality of the wiring, it could really be improved.
As a result, three of the four sensors had to be modified at once. Determining the malfunction of the sensors using computer diagnostics is not easy and all due to the floating nature of the breakdown. As a result, I spent 300 rubles on repairs, I consider this money symbolic, much more attention deserves the repair process itself, which in the service would cost me many times more expensive than the amount with which I had to part.
Modern anti-lock braking systems (ABS) have long ceased to be a sign of an elite car - they are installed on most new cars coming off the assembly line. While this useful piece of equipment is quite reliable, it still has a number of problem points that can affect smooth operation. The most vulnerable elements of the ABS are the wheel speed sensors located on the vehicle's hubs.
The ABS sensor is an inductor paired with a toothed disc, which is also mounted on the hub. Together they measure the speed at which the wheel is spinning. The first symptom of a device malfunction will be the signal of the warning lamp located on the dashboard of the car.
When the system is stable, the controller goes out a few seconds after the engine is started. If the indicator stays on or starts blinking chaotically when the car is moving, anti-lock brakes require immediate intervention.
Along with the signal of the indicator lamp, a sensor malfunction is indicated by:
alphanumeric error code of the on-board computer;
lack of characteristic sound and vibration when pressing the brake pedal;
permanent blocking of wheels during emergency braking;
parking brake controller light signal when the equipment is off.
The appearance of any of these symptoms requires a complete system diagnosis. Note that the help of car service technicians in solving this issue is completely optional. There are various ways to test an ABS sensor, and in most cases it is easy to do the job yourself.
As a result of device diagnostics, it is possible to determine in which sensor assembly there is damage. If the tester readings tend to zero, this indicates a short circuit in the connection wires, "infinity" signals a violation of the integrity of the coil winding. There is an opinion that the repair of the wiring does not cause any problems, but the faulty sensor is easier to simply replace. It is difficult to disagree with the first thought, but the next "point" can be disputed.
The fact is that the cost of some sensors reaches 14-18 thousand rubles, and you will have to wait for their delivery for a long time. Having certain skills, a stock of patience and natural ingenuity, it will be much more useful and faster to repair the device than to pay for a long-awaited expensive order. Note that this advice is only advisory in nature - the final verdict is yours. If the decision to repair is still made, we will be happy to help you to carry it out correctly.
After diagnostics and detection of a faulty element, the device must be dismantled for further repair. The process of removing it is similar to the first stage of measures to replace the ABS sensor and is not particularly difficult.
Attention! Elements can stick to the seat; it takes a lot of patience to remove them from the slot. Professional technicians advise to moisten the metal around the device abundantly with WD-40 liquid and carefully remove the sensor, slowly loosening it.
Having finished dismantling the device, we proceed to the repair work:
The repair of the sensor is completed, you can mount it on the hub by grinding the new body with sandpaper for a better fit to the seat. When installing a repaired device, be sure to observe the following conditions:
Place the sensor core parallel to the teeth of the counter disk, making sure that it does not overlap two adjacent teeth.
We leave a gap between the tine and the core of 0.9–1.1 mm.
The final stage in the repair of any of the ABS elements is to check the system operability. We carry it out by starting the car engine and making sure that the controller on the dashboard goes out 3-5 seconds after the start.
Attention! If the ABS indicator lamp periodically lights up when the car is moving after repairing the sensor, change the phasing of its connection wires.
Note that some sensors produced by the foreign auto industry can be disassembled without a fundamental violation of the integrity of the structure - the upper shell of the part can be removed by pre-heating with a construction hairdryer or blowtorch. An example of repairing such a device is shown in the video.
There shouldn't be any special problems with the issue of replacing or restoring the sensor wiring. For these purposes, any two-core cable of a similar cross-section or two pieces of field wire of the required length will do. In work, it is necessary to use only the soldering method and carefully insulate the joints with heat shrink tubes or electrical tape. Special attention should be paid to the sealing rubber bands, which are located at the points of attachment of the wiring to the body parts - when completely replacing the cord, they should be located in the same place.
When replacing the wire, we install sealing rubber bands at the points of its attachment to the body
Attention! When connecting the wiring to the ABS sensor, take into account that the device has polarity. In the vehicle operating instructions, the color coding of the wires is indicated - on the connector of the part there are exactly the same designations.
In more detail, the process of repairing the ABS sensor wiring is described in the video presented.
