VAZ ignition coil diagram. How to check the ignition coil (reel) on a car. The principle of operation and the scheme of the contact system
If the ignition coil on the VAZ 2107 is out of order, you will not be able to start the car. The only thing that remains for the driver in such a situation is to ask passing drivers to take the car in tow or call a tow truck. And having reached the garage, the driver can replace the ignition coil himself. Let's figure out how it's done.
The purpose of the ignition coil on the VAZ 2107
The ignition coil is a key component of the machine, without which it is impossible to ignite the air-fuel mixture in the combustion chambers.
The standard voltage of the VAZ 2107 electrical network is 12 volts. The purpose of the ignition coil is to increase this tension to a level at which a spark will occur between the electrodes of the spark plugs, which will ignite the air-fuel mixture in the combustion chamber.
Ignition coil design
Almost all ignition coils on VAZ vehicles are conventional step-up transformers equipped with two windings - primary and secondary. Between them is a massive steel core. All this is placed in a metal case with insulation. The primary winding is made of copper wire covered with lacquer insulation. The number of turns in it can vary from 130 to 150. It is on this winding that the initial voltage of 12 volts is applied.
The secondary winding is on top of the primary. The number of turns in it can reach 25 thousand. The wire in the secondary winding is also copper, but its diameter is only 0.2 mm. The output voltage supplied to the candles from the secondary winding reaches 35 thousand volts.
Types of ignition coils
In different years, different types of ignition coils were installed on VAZ cars, which differed in design:
- common coil. One of the earliest devices that was installed on the very first "sevens". Despite its venerable age, the coil is installed on the VAZ 2107 today. The design of the device was described above: two copper windings over a steel core;
- individual coil. It is mainly installed on cars with electronic systems ignition. In these devices, the primary winding is also located inside the secondary, however, individual coils are installed on all 4 VAZ 2107 candles;
- twin coils. These devices are used only on machines with electronic ignition systems. These coils differ from all the others by the presence of double wires, thanks to which the spark is fed not into one, but into two combustion chambers at once.
Location and wiring diagram
The ignition coil on VAZ 2107 cars is located under the hood, near the left mudguard. Attaches with two long hairpins. A rubber cap with a high-voltage wire is connected to it.
The coil is connected according to the diagram below.
About the choice of ignition coils on the VAZ 2107
VAZ 2107 cars of the latest releases are equipped with contact ignition systems that use a B117A coil of domestic production. The device is quite reliable, but every part has its own service life. And when the B117A breaks down, finding it for sale is quite difficult.
For this reason, motorists prefer to install coil 27.3705. It costs more (from 600 rubles). Such a high price is explained by the fact that the coil 27.3705 is filled with oil inside, and the magnetic circuit in it is of an open type. It is this device that is recommended to be used when replacing a burnt coil.
The third option should also be noted here: coil 3122.3705. There is no oil in this coil, and the magnetic circuit is closed. Despite this, it costs more than 27.3705 (from 700 rubles). Coil 3122.3705 is just as reliable as 27.3705, but given its overpriced price, most car owners opt for 27.3705. Foreign-made coils are not installed on the VAZ 2107.
The main malfunctions of the ignition coils VAZ 2107
If the driver, after turning the ignition key, clearly hears that the starter rotates, but the car does not start, then most likely the ignition coil is out of order. It should also be noted here that the motor may not start for other reasons: due to problems with candles, due to malfunctions in fuel system etc. You can understand that the problem is in the ignition coil by the following signs:
- there is no spark on the spark plugs;
- on the high voltage wires there is no tension;
- various defects are visible on the coil body: chips, cracks, melted insulation, etc.
- when you open the hood, you can clearly smell the burnt insulation.
All these signs indicate that the ignition coil has burned out. As a rule, this is due to a short circuit in the turns in one of the windings. The insulation that covers the wires in the winding is destroyed over time, adjacent turns are exposed, touch and a fire occurs at the place of their contact. The winding melts and becomes completely unusable. For this reason, ignition coils cannot be repaired. All that a motorist can do with a burnt coil is to replace it.
Video: faulty ignition coil
Self-test of the ignition coil
To independently check the health of the ignition coil, the car owner will need a household multimeter.
Check sequence
- The ignition coil is removed from the vehicle. All wires are removed from it.
- Both contacts of the multimeter are connected to the primary winding of the coil. Winding resistance is measured. Example: at room temperature, the resistance of the primary winding on the B117A coil is 2.5 - 3.5 ohms. The primary winding of coil 27.3705 at the same temperature should have a resistance of no more than 0.4 ohms.
- Now the multimeter contacts are connected to the high voltage outputs on the secondary winding. The secondary winding of the B117A coil at room temperature should have a resistance of 7 to 9 kOhm. The secondary winding of coil 27.3705 must have a resistance of 5 kΩ.
- If all of the above values are met, the ignition coil can be considered serviceable.
Video: we independently check the health of the ignition coil
Replacing the ignition coil on a VAZ 2107 car
To replace the coil, we need the following tools:
- new ignition coil;
- socket heads for 10 and 8 with a knob;
- screwdriver is flat.
Coil replacement sequence
- The hood of the car opens, both terminals are removed from the battery with an open-end wrench for 10.
- The main high-voltage wire is removed from the coil. This is done manually, the wire must be pulled up with a little effort.
- The coil has two terminals with wires. The nuts on the terminals are unscrewed with an 8 socket, the wires are removed.
- Access to the two fixing nuts of the coil is opened. They are unscrewed with a 10 socket wrench.
- The coil is removed, replaced with a new one, after which the ignition system of the car is reassembled.
So, replacing the ignition coil is not an extremely difficult task and even a novice driver is quite capable of doing it. The main thing is to follow the above sequence of actions, and before starting work, do not forget to remove the terminals from the battery.
On VAZ 2101 cars, a contact battery ignition system is installed. The task of this system is to timely supply a spark to the engine cylinders to ignite the fuel mixture.
It includes an ignition coil in which a high-voltage pulse is formed, a distributor-breaker (aka distributor) that distributes the pulse to the cylinders, spark plugs that provide a spark in the cylinders, an ignition switch that turns on and off the power supply to the coil, a battery - a source of electricity , ordinary wiring and high voltage wires.
1-Ignition Switch, 2-Ignition Coil, 3-Ignition Distributor, 4-High Voltage Wires, 5-Spark Plug, 6-Capacitor, 7-Battery, 8-Voltage Generator, 9-Distributor Rotor, 10-Cam Mechanical, 11 - Breaker contactsIgnition coil
The coil is sealed with an open-circuit magnetic circuit, inside it is filled with oil for transformers. Its model is B.117A. The body of this element is aluminum, hermetically sealed from above with a plastic cover.
| 1. | Ceramic insulator | 10. | Frame |
| 2. | Frame | 11. | Power supply terminal |
| 3. | Insulating special paper | 12. | Contact spring |
| 4. | Primary winding | 13. | Primary housing |
| 5. | Secondary winding | 14. | External insulation primary windings |
| 6. | Insulation | 15. | Mounting clamp |
| 7. | Primary terminal windings | 16. | External magnetic circuit |
| 8. | Screw contact | 17. | Core |
| 9. | Terminal for center wire |
The VAZ-2101 ignition coil is essentially a two-winding transformer:
- primary winding for 300-400 turns (wire cross section - 0.7-0.8 mm.),
- secondary winding - for 20-30 thousand turns (wire cross section - 0.1-0.7 mm).
The principle of the coil
When the contacts of the distributor open, the magnetic flux created by the battery decreases sharply. Passing the magnetic circuit and windings, the electromagnetic flux creates a self-induction EMF of 200-300 V on the primary winding and over 10 kV on the secondary. The voltage of the secondary winding is also supplied to the candles to create a spark.
Distributor
On VAZ 2101 models until 1980, a distributor (distributor) of the R-125B model was used. Its peculiarity was the absence of a vacuum regulator, there was only a mechanical type octane corrector, which made it possible to slightly change the ignition timing (OZ).
Since 1986, together with the installation of the Ozone carburetor, VAZ engines began to install a distributor equipped with an OZ vacuum regulator (model 30.3706), the design of which is described below.
Model 30.3706 consists of a distributor, a breaker and two regulators - centrifugal and vacuum.
The distributor ensures the distribution of coil impulses among the candles in accordance with the order of work power plant.
It consists of a rotating rotor and fixed segments located in a plastic cover. There are two contacts on the rotor - central and lateral, between them an interference suppression resistor is fixed. From above, a graphite electrode is pressed against the central contact; for better contact, the pressing is carried out by a spring.
The distributor works like this:
voltage from the secondary winding is supplied to the rotor, then through a spark gap of about 0.5 mm it enters one of the segments of the distributor cover, then along the high voltage wires to the candle, which ensures the appearance of a spark.
The breaker ensures that the electrical circuit is opened at the right time. Its design includes a cam washer with edges and a contact stand. The cam faces are specially shaped to achieve fast contact opening, smooth closing and no rattling.
The rotating cam alternately closes and opens the contacts, thereby interrupting the voltage supply to the primary circuit of the coil.
The breaker and distributor must work synchronously with the crank mechanism. To ensure synchronization, the cam and rotor are located on the same shaft, and are driven by the camshaft.
Centrifugal regulator - provides a change in the angle of the OZ in accordance with the turns of the knees. shaft.
A plate with movable weights is welded to the top of the cam bushing. With an increase in the speed of the knees. shaft, due to centrifugal force, the loads are moved apart, turning the plate together with the cam in the direction of rotation of the shaft. This provides an earlier opening of the contacts (increase in the OC angle).
Vacuum regulator - adjusts the angle of the OZ depending on the load power unit and throttle position.
It is attached to the distributor, and includes a body and a cover. The body is divided by a plastic membrane into two cavities, one of the cavities is connected to the throttle space in the carburetor, and the second is connected to the atmosphere. The membrane by means of thrust can act on the interrupter.
When the load decreases, the filling of the cylinders decreases combustible mixture and pressure during ignition, and this requires an increase in the angle of OZ. To do this, the membrane bends (under the influence of a pressure difference) and turns the breaker to the desired angle.
Spark plug
The VAZ-2101 used Soviet candles of the A17DV brand, but now, when the market is filled with high-quality brands of foreign production, you can easily choose candles with much the best performance, the main thing is not to fall for a Chinese fake.
Design features of candles
The length of the threaded part of the candle is 19 mm, in increments of 1.25. Hexagonal part (under candle key) is made with a size of 20.8 mm.
The allowable gap between the electrodes of the spark plug is checked with a feeler gauge. According to the book with a contact system, the gap of the VAZ 2101 candle should correspond to 0.5 - 0.6 mm.
Ignition lock VAZ 2101
Includes a body with a locking mechanism, an anti-theft mechanism and a contact part.
If the locking mechanism or the anti-theft mechanism breaks down, the lock is completely replaced. The contact part is fixed with a retaining ring in the housing, and in case of a malfunction it can be replaced separately.
Accumulator battery
Any brand of battery with standard parameters is used, namely 6ST - 55Ah, which means:
- 6 - the number of batteries (cans) connected in series,
- ST - starter,
- 55Ah - battery capacity.
Video - Contact ignition system
Sometimes motorists have to deal with such a situation: the “six” does not start from the starter. As a rule, the problem is in the ignition system, more precisely, in the failure of some element of this system. The first step is to check the current flow channel to the central wire of the breaker-distributor, or, as it is called in everyday life, the distributor.
Checking the ignition coil
To this end, it is necessary to remove the central wire from the breaker-distributor, bring it to the motor housing and turn it with the starter, and a spark should appear. After that, we check the energy supply to a separate candle, for which we unscrew the working spark plug, and bring it with a contact to the "mass" and make an attempt to start the engine. In this case, the spark should come from the wire to ground. In its absence, the cause will be a malfunction of such an element of the system as the VAZ 2106 ignition coil, which plays an important role in operation vehicle.
During the inspection, it is necessary to observe safety precautions and work in protective dielectric rubber gloves. In the "six" with equal success, both the ignition system using contacts and the system without the use of distributor contacts are used, respectively, a different VAZ 2106 coil is used, depending on the type of ignition system.
Checking these types of ignition is carried out in almost the same parameters. In this case, we test the system with a multimeter. It must be remembered that in the connection circuit of the VAZ 2106 ignition coil, the voltage in the circuit sections reaches from 24 thousand to 40 thousand volts. With a small current in the system, this is not life threatening, but an electric shock can be very sensitive.
Important: For safety reasons, it is advisable to keep an additional ignition coil and distributor capacitor in the car. These elements of the system quite often cause the system to fail, and such products cannot be repaired. If these components are defective, it is not possible to start the engine, and it is not difficult to replace them. In extreme cases, in the absence of standard products, it is temporarily possible to install analogues from other VAZ models.
Scheme of the ignition coil VAZ 2106
The regular ignition coil VAZ 2106 is a sealed technical vessel filled with special oil, with an open-type magnetic circuit. circuit diagram the ignition system is located below:
where: 1 – generator; 2 - ignition lock; 3 - distributor; 4 – distributor cam; 5 - candles; 6 - ignition coil; 7 - battery.
The correct connection of the ignition coil VAZ 2106 can be found here:
Checking the ignition coil:
- At the initial stage, it is necessary to find out how the current “comes” to the ignition coil, for which: turn on the ignition and measure the voltage with a multimeter with the ignition on at the B + contact of the product and the mass, which should be 12 V. If there is no voltage, then the reason is ignition lock.
- To start the "engine" in emergency mode, it is necessary to connect the positive wire with the battery to the B+ “reel” mount. If the current "comes" to the ignition coil in the absence of a spark, then it is necessary to test the resistance of both circuits (windings) of the product.
- To measure the resistance values of the primary winding "crocodiles" of the multimeter are connected to 2 coil contacts on the sides of the product, while the meter must give measurement values of 3-4 ohms.
- To measure resistance values, the multimeter's secondary windings are connected as follows: the first to the main output contact of the coil, and the second to the side contact, while the meter must give measurement values of 7-9 kOhm.
With a working ignition coil VAZ 2106, the price of which is acceptable for many motorists, the reason mainly lies in the breaker-distributor. It is forbidden to allow a long test for a spark "run" between the wiring and ground, this can provoke a "reel" defect. Due to the increased distance, the ignition coil "punches" from the inside.
Malfunctions of the ignition coil VAZ 2106
There are individual malfunctions of the ignition coil, which lead to the replacement of the product. These include external mechanical deformations of the product and breaks in the coil windings. As a malfunction of the ignition coil VAZ 2106, a condition is classified when the ignition coil heats up to a high temperature.
A slight heating of the product is the usual state of this part when the ignition is on and the distributor contacts are closed with a contact ignition system. In case of doubt about the operability of this part of the ignition system, we recommend checking the coil for the resistance of both windings of the product.
Sometimes motorists have to deal with such a situation: the “six” does not start from the starter. As a rule, the problem is in the ignition system, more precisely, in the failure of some element of this system. The first step is to check the current flow channel to the central wire of the breaker-distributor, or, as it is called in everyday life, the distributor.
Checking the ignition coil
To this end, it is necessary to remove the central wire from the breaker-distributor, bring it to the motor housing and turn it with the starter, and a spark should appear. After that, we check the energy supply to a separate candle, for which we unscrew the working spark plug, and bring it with a contact to the "mass" and make an attempt to start the engine. In this case, the spark should come from the wire to ground. In its absence, the cause will be a malfunction of such a system element as the VAZ 2106 ignition coil, which plays an important role in the operation of the vehicle.
During the inspection, it is necessary to observe safety precautions and work in protective dielectric rubber gloves. In the "six" with equal success, both the ignition system using contacts and the system without the use of distributor contacts are used, respectively, a different VAZ 2106 coil is used, depending on the type of ignition system.
Checking these types of ignition is carried out in almost the same parameters. In this case, we test the system with a multimeter. It must be remembered that in the connection circuit of the VAZ 2106 ignition coil, the voltage in the circuit sections reaches from 24 thousand to 40 thousand volts. With a small current in the system, this is not life threatening, but an electric shock can be very sensitive.
Important: For safety reasons, it is advisable to keep an additional ignition coil and distributor capacitor in the car. These elements of the system quite often cause the system to fail, and such products cannot be repaired. If these components are defective, it is not possible to start the engine, and it is not difficult to replace them. In extreme cases, in the absence of standard products, it is temporarily possible to install analogues from other VAZ models.
Scheme of the ignition coil VAZ 2106
The regular ignition coil VAZ 2106 is a sealed technical vessel filled with special oil, with an open-type magnetic circuit. A schematic diagram of the ignition system is located below:
where: 1 – generator; 2 - ignition lock; 3 - distributor; 4 – distributor cam; 5 - candles; 6 - ignition coil; 7 - battery.
The correct connection of the ignition coil VAZ 2106 can be found here:
Checking the ignition coil:
- At the initial stage, it is necessary to find out how the current “comes” to the ignition coil, for which: turn on the ignition and measure the voltage with a multimeter with the ignition on at the B + contact of the product and the mass, which should be 12 V. If there is no voltage, then the reason is ignition lock.
- To start the "engine" in emergency mode, it is necessary to connect the positive wire from the battery to the B + "reel" mount. If the current "comes" to the ignition coil in the absence of a spark, then it is necessary to test the resistance of both circuits (windings) of the product.
- To measure the resistance values of the primary winding "crocodiles" of the multimeter are connected to 2 coil contacts on the sides of the product, while the meter must give measurement values of 3-4 ohms.
- To measure resistance values, the multimeter's secondary windings are connected as follows: the first to the main output contact of the coil, and the second to the side contact, while the meter must give measurement values of 7-9 kOhm.
With a working ignition coil VAZ 2106, the price of which is acceptable for many motorists, the reason mainly lies in the breaker-distributor. It is forbidden to allow a long test for a spark "run" between the wiring and ground, this can provoke a "reel" defect. Due to the increased distance, the ignition coil "punches" from the inside.
Malfunctions of the ignition coil VAZ 2106
There are individual malfunctions of the ignition coil, which lead to the replacement of the product. These include external mechanical deformations of the product and breaks in the coil windings. As a malfunction of the ignition coil VAZ 2106, a condition is classified when the ignition coil heats up to a high temperature.
A slight heating of the product is the usual state of this part when the ignition is on and the distributor contacts are closed with a contact ignition system. In case of doubt about the operability of this part of the ignition system, we recommend checking the coil for the resistance of both windings of the product.
We study the scheme of the ignition coil of a VAZ 2106 car
Sometimes motorists have to deal with such a situation: the “six” does not start from the starter. As a rule, the problem is in the ignition system, more precisely, in the failure of some element of this system. The first step is to check the current flow channel to the central wire of the breaker-distributor, or, as it is called in everyday life, the distributor.
Checking the ignition coil
To this end, it is necessary to remove the central wire from the breaker-distributor, bring it to the motor housing and turn it with the starter, and a spark should appear. After that, we check the energy supply to a separate candle, for which we unscrew the working spark plug, and bring it with a contact to the "mass" and make an attempt to start the engine. In this case, the spark should come from the wire to ground. In its absence, the cause will be a malfunction of such an element of the system as the VAZ 2106 ignition coil, which plays an important role in the operation of the vehicle.
During the inspection, it is necessary to observe safety precautions and work in protective dielectric rubber gloves. In the "six" with equal success, both the ignition system using contacts and the system without the use of distributor contacts are used, respectively, a different VAZ 2106 coil is used, depending on the type of ignition system.
Checking these types of ignition is carried out in almost the same parameters. In this case, we test the system with a multimeter. It must be remembered that in the connection circuit of the VAZ 2106 ignition coil, the voltage in the circuit sections reaches from 24 thousand to 40 thousand volts. With a small current in the system, this is not life threatening, but an electric shock can be very sensitive.
Important: For safety reasons, it is advisable to keep an additional ignition coil and distributor capacitor in the car. These elements of the system quite often cause the system to fail, and such products cannot be repaired. If these components are defective, it is not possible to start the engine, and it is not difficult to replace them. In extreme cases, in the absence of standard products, it is temporarily possible to install analogues from other VAZ models.
Scheme of the ignition coil VAZ 2106
The regular ignition coil VAZ 2106 is a sealed technical vessel filled with special oil, with an open-type magnetic circuit. A schematic diagram of the ignition system is located below:
where: 1 – generator; 2 - ignition lock; 3 - distributor; 4 – distributor cam; 5 - candles; 6 - ignition coil; 7 - battery.
The correct connection of the ignition coil VAZ 2106 can be found here:
Checking the ignition coil:
- At the initial stage, it is necessary to find out how the current “comes” to the ignition coil, for which: turn on the ignition and measure the voltage with a multimeter with the ignition on at the B + contact of the product and the mass, which should be 12 V. If there is no voltage, then the reason is ignition lock.
- To start the "engine" in emergency mode, it is necessary to connect the positive wire from the battery to the B + "reel" mount. If the current "comes" to the ignition coil in the absence of a spark, then it is necessary to test the resistance of both circuits (windings) of the product.
- To measure the resistance values of the primary winding "crocodiles" of the multimeter are connected to 2 coil contacts on the sides of the product, while the meter must give measurement values of 3-4 ohms.
- To measure resistance values, the multimeter's secondary windings are connected as follows: the first to the main output contact of the coil, and the second to the side contact, while the meter must give measurement values of 7-9 kOhm.
With a working ignition coil VAZ 2106, the price of which is acceptable for many motorists, the reason mainly lies in the breaker-distributor. It is forbidden to allow a long test for a spark "run" between the wiring and ground, this can provoke a "reel" defect. Due to the increased distance, the ignition coil "punches" from the inside.
Malfunctions of the ignition coil VAZ 2106
There are individual malfunctions of the ignition coil, which lead to the replacement of the product. These include external mechanical deformations of the product and breaks in the coil windings. As a malfunction of the ignition coil VAZ 2106, a condition is classified when the ignition coil heats up to a high temperature.
A slight heating of the product is the usual state of this part when the ignition is on and the distributor contacts are closed with a contact ignition system. In case of doubt about the operability of this part of the ignition system, we recommend checking the coil for the resistance of both windings of the product.
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legkoe-delo.ru
Ignition coil VAZ 2106: How to check, No spark, How to connect
The car coil is a high voltage pulse transformer. A thin wire of the secondary winding is wound on the core of the device. It contains 30 thousand turns. In accordance with the scheme of the device, the primary winding, consisting of a thick wire, is located on top of the secondary winding. Both windings at one of their ends are connected to the car battery.
The second end of the primary winding is connected to the distributor. The common connection point of the coil windings is connected to the voltage switch. The core plays the role of a magnetic field amplifier. At the moment of breaking the circuit, a high voltage is formed in the secondary winding, which is supplied through the wire to the candle for breakdown and the formation of a spark.
How to check No spark How to connect Faults
How to check
Checking the resistance of the primary winding
When performing this work, like any other related to electrical equipment, it is imperative to disconnect the negative terminal from battery.
So, in order to check the primary winding of the VAZ 2106 ignition coil for serviceability, it is necessary to connect both ohmmeter wires to the two side terminals, as is clearly shown in the photo below:
According to data from numerous technical manuals for the repair of VAZ 2106, the resistance in this case should be within 3-4 ohms. This will indicate the full health of the ignition coil. As you can see, in my case, the resistance is slightly higher (but not significant), and at the same time, there were no problems with the operation of the ignition system.
If the measurement value is strongly deviated from the norm, this indicates a malfunction and the need to replace the part.
Checking the secondary winding
The secondary winding of the coil is checked in almost the same way, only one of the ohmmeter wires must be connected to the side terminal, and the second to the central one on the coil. Everything is shown below:
Here, the resistance data is already completely different and during normal operation they should be in the region of 7.4-9.2 kOhm. Judging by the readings of the device, my case shows and confirms again that everything is fine with the coil.
To avoid misunderstandings, I want to warn you that the numbers given in this article are more related to the ignition coils of the VAZ 2106 type B117-A, although the parameters are identical on many models. But still, for your modification, it is better to look at the data in specialized sources.
no spark
If there is no spark even at the contacts, then there is a high probability that it was the ignition coil that burned out. You can check it either with an ohmmeter by measuring the resistance, or by installing a new one and see if that fixes the problem!
How to connect
The procedure for removing and installing the ignition coil on the VAZ 2106
So, initially it is necessary to disconnect the central high-voltage wire leading to the distributor (ignition distributor).
Also disconnect all power wires from the coil contacts. Since they are fastened with nuts, you will need an 8 wrench for this.
If you do not know which wires to then connect to which connector, then it is better to immediately remember or mark them somehow, so that you can connect them correctly during installation.
Now you need to unscrew the coil housing itself. It is attached to a clamp (clamp), which is pressed to the car body with two nuts. We need to unlock them.
After the work done, you can safely remove the ignition coil and replace it if necessary.
The price of a new such part is about 500 rubles, or even a little cheaper. It all depends on where you buy it.
Faults
If the ignition coil fails, the engine will not start. A characteristic sign of a faulty coil is its elevated temperature when the ignition is off. It is easy to determine by hand to the touch.
The correctness of the ignition coil can be verified in the following simple way. Remove the central high voltage wire from the clamp of the distributor cover and set a gap of 5-7 mm. Between the tip of this wire and the "mass" of the car. If the coil is working, then in this gap when turning crankshaft engine at the moment of contact opening, a strong spark with a blue tint will occur. A weak spark or its absence indicates a malfunction of the ignition coil. It can be assumed that a short circuit has occurred in the ignition coil windings. The most common cause of premature failure of the ignition coil is the ignition on for a long time with the engine off. From elevated temperature, the insulation of the ignition coil windings dries out, crumbles, which leads to a short circuit. A defective ignition coil must be replaced. For replacement, you can use the ignition coil of any domestic passenger car with a voltage of the electrical system of 12 V. This ignition coil is usually also suitable for attachment points. At the same time, it must be borne in mind that the ignition coils of some domestic cars have not two, but three terminals: VK, VK-B and a third terminal without a designation. In this case, for example, to replace the coil on VAZ vehicles, a terminal without a designation should be connected to the distributor, the second wire should be connected to the VK-6 terminal, and the VK terminal should be left free. In addition, in this case it is also impossible to directly use the standard high voltage dip connecting the ignition coil to the distributor. It will have to be adapted or, even better, replaced with a spare wire that does not have a ferrule at one end. When replacing a spare faulty ignition coil, all wires must be properly connected, securely fastened and insulated.
vz06-up.ru
Ignition coil in a VAZ 2106 car: learning to maintain and repair a part
If during the operation of the vehicle the motor began to "troit", its power characteristics decreased, there were problems with starting the power plant, then the root of evil should be sought in the ignition system. If you have to test a car with a carburetor type engine, then the task is simplified. At the initial stage, it is required to check such an element of the low-voltage network as the VAZ 2106 ignition coil, then other elements of the system.
To test this system, you will need an electrical tool such as a multimeter, as well as screwdrivers with different tips and pliers with insulation for working under voltage. It is necessary to observe safety precautions when working with the ignition system, because. flows in the circuit electricity high voltage. It is recommended to have rubber gloves or insulated pliers.
Schematic diagram of the VAZ 2106 ignition coil is located here. The figure shows how the ignition coil is connected in the standard version.
The ignition coil, the price of which is acceptable for most Russian motorists, has the item code 8352.12. and is an oil-filled type tank with an open type magnetic wire.
The regular ignition coil of the “six”, which is easy to buy at any specialized auto parts store, is equipped with 3 contact terminals: “B”, “K” and an outlet for the central high voltage wire. The ignition coil is connected in the following way: the positive battery cable is connected to terminal “B” through the contact of the ignition switch. The output contacts of both windings of the ignition coils and the negative wire of the battery are connected to the output "K" through the switch.
Connected to the high voltage output is another secondary terminal and a high voltage wire terminal leading to the breaker distribution element, which, when the runner rotates, distributes the high voltage current to the spark plugs.
What malfunctions of the VAZ 2106 ignition coil can be determined by the test method? If we exclude such defects as unstable contact of the product with electrical wiring due to weak fasteners, then the main malfunction of the ignition coil is a weak spark that cannot “break through” a gap of more than 5 mm. A working ignition coil in good condition should “break through” a gap of about 15 mm. Otherwise, the "reel" is considered faulty.
A routine test of the ignition coil is carried out on a product located in the vehicle's electrical circuit. The main purpose of the measures taken is to measure the resistance of the ignition coil of the VAZ "Shokha", namely, to measure the resistance values of all windings and the insulation resistance to ground.
Operating procedure:
- Disconnect the negative wire from the battery.
- We remove the wiring elements from the output contacts of the coil.
- To carry out repair work, it is necessary to acquire a set of ordinary locksmith tools, a megohmmeter or other similar device.
- We carry out measurements of the resistance of the primary type winding, for this we connect the contacts of the megohmmeter to low voltage terminals, which should be cleaned of dirt. For products with the number 3122.3705 according to the nomenclature, the resistance of the ignition coil should be 0.43 ± 0.04 Ohm. For products with the number 8352.12 according to the nomenclature, the resistance of the ignition coil should be 0.42 ± 0.05 Ohm.
- Then we test the resistance of the winding of the secondary type, i.e. we connect the limit switch of the megohmmeter to the output “B” of the product, and connect the other output to the high voltage contact. For products with the number 3122.3705 according to the nomenclature, the resistance of the ignition coil should be 4.08 ± 0.40 Ohm. For products with the number 8352.12 according to the nomenclature, the resistance of the ignition coil must be 5.00 ± 1.00 Ohm.
- And at the final stage, it is necessary to test the insulating resistance to ground, i.e. we connect the first output of the megohmmeter to the body of the product, and the second in turn to three output contacts - 2 low voltage channels and 1 high voltage channel. All megohmmeter measurements must be at least 50 Megaohm. In case of other measurement indicators, it is necessary to replace the product.
As for the ignition coil VAZ 2106 injector, a breaker-distributor is not used in motors of this type. It uses 2 ignition coils, which are placed on the cylinder head cover. The mains voltage is tested by a special controller. An ignition coil with part numbers 3012.3705 or 406.3705 is used.
Most often, these products become faulty due to overheating or a short circuit between the turns of the windings, due to the operation of the power plant with excessive spark plug gaps in the direction of increasing, or the absence of contacts in the joints of high voltage wires.
Checking coils without dismantling is carried out in 2 ways. To carry them out, you will need a megger and a set of keys:
- First way. We remove the tip from the working candle, install another candle into it, bring it to the block body and start it with the help of a starter. If there is a spark, then the product is working properly.
- The second way. The check is carried out with a special device for diagnosing the presence of a candle. We disconnect high-voltage high-voltage wires from the product and connect the device for diagnostics. We turn the crankshaft of the unit with the help of a starter, while a spark should appear in the discharge device of the electrical appliance.
Checking the product by measuring the gap of the high voltage wire to the "ground" is not carried out, because the controller may become defective.
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Functions of the ignition coil VAZ 2106
The set of the six ignition system includes:
- ignition coil VAZ 2106;
- distributor;
- candles;
- low and high voltage wires;
- lock.
Additionally, the VAZ ignition relay is also included in the vehicle's power supply system.
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