How to change the ignition switch on a Grant

Malfunctions of the ignition switch LADA “Granta”

Ignition switch failures can be divided into two types: electrical and mechanical. Electrical faults include malfunctions of the contact group of the lock, as a result of which individual energy consumers (most often the starter) or the entire Granta electrical system as a whole stop working. This also includes a breakdown of the car's immobilizer. Mechanical malfunctions occur due to breakdown of parts of the ignition switch or contact group, as well as physical wear of the contacts. This also includes cases when, due to poor contact, heating and melting of the plastic parts of the contact group occurs. Signs of a malfunction in the ignition switch of the LADA Granta:

• the key does not turn;
• when turning the key the ignition does not turn on;
• The starter or other electrical appliances do not work.

The last two signs do not necessarily indicate problems specifically in the ignition switch, but they certainly appear when the contact group is faulty.

To eliminate the malfunction, it is necessary to replace the LADA Granta ignition switch or part of it, for example, a contact group.

What is needed to replace the Granta ignition switch

To replace the ignition switch you will need:

• key to 10;
• a thin chisel and a hammer (or a drill with a drill bit to drill out bolts with self-cutting heads);
• screwdriver;
• new ignition switch LADA “Granta” or contact group.

Ignition switch grant malfunction

General engine starting techniques

The methods for starting an injection engine on a Lada Granta VAZ 2190 are the same at any temperature of the outside air and liquid in the engine cooling system.
To start the engine on a Lada Granta VAZ 2190, you just need to turn on the starter without touching the gas pedal. The engine control system will independently set the fuel supply and ignition timing parameters necessary to start the engine. 1. Open the hood by pulling the hood lock drive handle towards you.
2. Using an oil dipstick, measure the oil level in the engine. NOTE On a VAZ 21126 engine, the oil level should be between the upper and lower scale marks (within the notch on the dipstick). . and on VAZ 11183, VAZ 21116 and VAZ 11186 engines - between the “MAX” and “MIN” marks.

How to replace the ignition switch of a LADA Granta

The work can be done both indoors and outdoors. To avoid a short circuit, before removing the ignition switch, you must disconnect the ground terminal from the Granta battery. The ignition switch of the LADA “Grant” is removed as follows:

• Unscrew the five lower screws securing the steering column casing;

  

• Unscrew the left and right side bolts securing the casing;
• dismantle the lower part of the “Grants” steering column casing;
• remove the upper part of the casing;
• squeeze the latch of the wire connector connected to the ignition switch;
• disconnect the connector from the contacts of the Grant ignition switch;
• release the lock of the immobilizer antenna unit wire connector;
• disconnect the connector of the antenna unit of the LADA “Grant” immobilizer;
• using a thin chisel and a hammer, unscrew and remove the bolts with self-cutting heads that hold the ignition switch to the steering column or drill out the bolts with a drill;

  

• remove the LADA Granta ignition switch from the steering column.

Tip: it is not necessary to change the lock assembly. It is cheaper to find the cause of the breakdown and limit yourself to replacing one part, for example, a contact group.

How to disassemble the ignition switch of a LADA Granta

To disassemble the ignition switch, follow these steps:

• bend the wire harness clamp on the Grant ignition switch connector housing;
• remove the terminals with wires from the housing;
• Squeeze the latches securing the plastic cover and remove it from the lock;
• press out a pair of plastic clips of the contact group;
• pull the contact group out of the lock body.

After disassembling the lock, it is necessary to inspect the condition of the contact group and terminals on the wires and clean them with fine sandpaper or replace them with new ones.

Assembling the ignition switch and installing it on the LADA Granta is performed in the reverse order of disassembling and removing it from the car.

Removing the ignition switch, replacing the contact group and immobilizer coil of Lada Granta

Tools:

• Ratchet wrench
• 10 mm head
• Medium Phillips screwdriver
• Small flat screwdriver
• Driver for socket attachment
• 8mm wrench attachment
• 24mm wrench attachment
• Chisel and hammer or electric drill
• Long nose pliers

Parts and consumables:

• Sandpaper (fine grit)
• Return spring (if necessary)
• Microswitch (if necessary)
• Contact plate on light guide (if necessary)
• Ignition switch contact group (if necessary)
• Bolt with shear head M6 - 4 pcs.

Remove the ignition switch to replace it if its cylinder mechanism fails, to replace the contact group of the ignition switch, and also if it is necessary to replace the immobilizer coil.

Removing the ignition switch

1. Disconnect the wire terminal from the negative terminal of the battery.

2. Remove the steering column covers and left steering column stalk as described in this article.

For ease of operation, you can remove the steering wheel and the spiral cable drum device.

3. If the ignition switch O-ring did not come off when removing the steering column covers, remove the O-ring from the ignition switch.

4. By pressing the block latch, disconnect the ignition switch contact block from the instrument panel wiring harness.

5. Using a thin screwdriver, pry the edge of the wiring harness block and disconnect the immobilizer coil wiring block from the instrument panel wiring block.

6. The ignition switch is secured with bolts with shear heads; these bolts are tightened until the heads come off. After this, use a chisel and a hammer to tear off the lock fastening bolts, as is clearly demonstrated in the second photo below.

Shear head bolt:

1 – threaded part;

2 – round head;

3 - turnkey head.

7. When the caps are already loose enough, you can unscrew them using long-nose pliers.

8. When all the bolts are unscrewed, remove the clamp securing the ignition switch to the shaft, and then the switch itself.

Disassembling and assembling the ignition switch

1. Remove the three screws securing the bracket to the switch body.

2. Remove the bracket from the case.

3. Remove the ignition switch microswitch drive.

4. Press the plastic latch and remove the microswitch from the bracket.

To replace the microswitch, you need to unsolder the wires from its contacts.

5. Disconnect the wire block from the backlight lamp socket.

6. Using a screwdriver, unfasten the latch on one side of the ignition switch.

7. Then unfasten the two latches on the other side.

8. Remove the plastic cover from the switch housing.

9. Using a screwdriver, unfasten the two latches on both sides of the cover.

10. Remove the contact group and light guide from the cover.

11. Clean the oxidized or burnt contacts of the plate on the light guide with fine sandpaper.

12. If the contacts are severely damaged, replace the contact plate on the light guide. To do this, turn the contact plate so that its internal protrusions fit into the slots of the light guide and remove the plate along with the return spring. Replace a broken or cracked return spring.

13. Using a screwdriver, remove the immobilizer coil (if present).

14. Install the spring and slip ring onto the light guide in the reverse order of removal. Please note that the protrusions on the inner surface of the light guide should be opposite the wide outer protrusion of the plate.

Ignition switch Lada Granta - removal, disassembly and maintenance

The main purpose of the Lada Granta ignition switch is to supply and disconnect power to the main electrical consumers of the car in various operating modes.
In other words, the ignition switch can be considered the main power distributor, the condition of which largely determines the normal operation of the car. Among other things, the Lada Granta ignition switch is combined with a mechanical locking device, a key position sensor and an immobilizer antenna control unit.

The operation of the locking device and the contact group of the switch is synchronized to provide control from the ignition key.

It should be admitted that the Lada Granta ignition switch is quite reliable, however, due to the high workload of this element, it is possible that sooner or later it will need to be dismantled for the purpose of replacement or, at least, prevention.

Sequence of operations when removing a VAZ-2190 (Lada Granta)

First of all, as with other work related to tampering with the car’s electrical system, the corresponding power wire should be disconnected from the negative terminal of the battery, after which, to facilitate access to the switch, the protective cover is removed from the steering column;

To disconnect the block connected to the contact group of the lock, release the latch. In the same way, disconnect the block from the immobilizer antenna control unit;

Due to the fact that the lock body is secured to the steering column using bolts with self-cutting heads, a hammer and chisel are indispensable in this case. Alternatively, you can use a drill to remove the bolts;

Next, it is necessary to check the condition of the wires in the most critical place (connection block) and carry out inspection and maintenance of the VAZ 2190 ignition switch as such.

Inspection of the connecting block and prevention of lock elements

Press the latch on the switch wiring harness block and carefully remove the contacts with the wires. Inspect the contacts for oxidation and damage at the soldering (crimping) points. Reassemble the block in reverse order;

Squeeze the side latches and, without applying additional force, remove the plastic cover from the switch body;

Squeeze out the plastic clip and remove the contact group;

Inspect the plate located on the light guide and if oxidation and scorch are detected, clean the contacts with fine-grain sandpaper;

If the damage is too severe, replace the contact plate. To remove the plate, it must be rotated so that the mounting protrusions are aligned with the corresponding slots;

After removing the plate, check the condition of the return spring and if it is cracked or completely broken, replace it;

In the same way, the contacts of the main contact group are cleaned of contaminants, and if it is impossible to perform this operation efficiently, the contact group is changed completely (after having unsoldered three wires);

When reinstalling the spring and slip ring, make sure that the protrusions on the inner surface of the light guide are opposite the widest outer protrusion of the plate.

Upon completion of assembly, it is recommended to check the serviceability of the ignition switch when moving the key to all operating positions, taking into account that the main voltage from the battery and generator is supplied to contact “30”:

Position “0” - all systems are turned off;

Position “I” (ignition) - power is supplied to control devices on the engine management system, generator excitation winding, headlights, turn signal lamps, window cleaners and washers, as well as electric window lifts;

Replacing the ignition switch on a Grant

I think that many car owners have encountered such a problem when, with excessive force when turning the key, it could remain in the ignition switch, or rather, its blade. In this case, you will have to replace the lock, since it is almost impossible to get the key.

On the Grant, as on other front-wheel drive VAZ cars, the lock is mounted on the steering shaft and secured using breakaway bolts. This was done specifically for security purposes, so to speak, to prevent unauthorized access to your car.

To replace the lock, you will need the following tool:

• Phillips screwdriver
• The chisel is narrow and sharp
• Hammer
• Key for 10

How to remove the ignition switch on a Grant

In order to get to the ignition switch structure on the Lada Granta, you need to remove the steering column cover. This can be done using a Phillips screwdriver.

After this, using a chisel and a hammer, we tear off the lock fastening bolts, as is clearly demonstrated in the picture below.

When the caps are already loose enough, you can unscrew them using long-nose pliers.

When all the bolts are unscrewed, hold the lock and remove the clamp securing it to the shaft.

And the lock on the back side.

Now you need to disconnect the two plugs with the power wires from the lock, as is clearly shown in the photo.

System operating mode

A car's spark plug creates a spark to burn the fuel mixture in the cylinder. Parts work in difficult conditions. They are subject to high thermal and electrical loads. The temperature regime of the working surfaces of the spark plugs inside the combustion chamber reaches 900°C. On the Lada Granta, an arc electric discharge between 2 electrodes is created with a voltage of 30-40 kV.

Heavy duty work affects the service life. Carbon deposits form on the surface of the insulator and the metal electrodes burn. The temperature regime is determined by the loads in the combustion chamber. Like all parts, spark plugs must withstand mechanical and thermal disturbances. The driver must remember that excessive overheating leads to damage to parts of the ignition system and engine. If the coolant overheat warning lamp on the instrument panel lights up red, then measures must be taken to cool the unit. It is necessary to disable the ignition switch of the Lada Granta. The engine housing must cool for at least 30 minutes.

Stable operation of the spark plugs is one of the conditions for the normal functioning of the engine. Trouble-free operation of the ignition system depends on compliance with the following rules:

1. Install spark plugs with the characteristics specified in the AvtoVAZ instructions.
2. Follow the instructions for replacing parts. On average, spark plugs can be used for 30 thousand kilometers for electronic ignition.
3. Carry out regular maintenance.
4. Use high-quality motor oil and gasoline.
5. Observe the engine temperature.

Installing the ignition switch

A new lock on Granta can be purchased at a price of 1,800 rubles. This is the cost of the kit with all the door cylinders and trunk lid. Installation is carried out in reverse order. We first install it on the shaft and try on the casing so that the lock sits exactly in the hole. After which you can finally tighten the fastening bolts.

It is necessary to tighten until the head of the bolt comes off when a certain torque is reached.

After which you can install the casing in place, having previously connected all the power wires.

Replacing spark plugs on a Lada Granta - step-by-step instructions

Reassemble everything in reverse order and start the engine. The result should be noticeable provided that the replacement of the spark plugs on the Grant was carried out due to a malfunction of the latter, if the speed was floating or the engine was throttled - replacing the spark plugs should eliminate these disturbances in the operation of the power unit.

Lada Granta › Logbook › Replacing the ignition switch

I changed the ignition switch, installed a non-original one, in principle there is nothing complicated, except to unscrew the 4 bolts (with a smooth head)

It was also fun to unwind the insertion of wires for autostart from the official dealer, then the twists were removed, and everything was done with copper bushings for crimping (photo disappeared somewhere(*)

I think there is no need to open America and tell how the casings and the lock itself are removed) there’s plenty of information already) I won’t spoil it)

Now I’ll test it, if I have the same problem with starting again, I’ll dig further) Many people have already said that the problem goes away after replacing the lock) Thank you all, and good luck on the roads)

Price: 500 ₽ Mileage: 99,500 km