Ignition switch gazelle business wiring diagram

03/30/2021 8,233 GAZ Gazelle

Author: Ivan Baranov

The performance of the automotive ignition system (ISY) directly affects the functionality and operating condition of the vehicle engine. Accordingly, the failure of one of the system elements can lead to minor or even serious problems in the operation of the power unit. What is the operating principle and order of the SZ, how to replace the Gazelle ignition switch - read more about this below.

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Gazelle ignition switch pinout 5 pins

The quality of the ignition system of foreign and domestic cars affects the performance of cars.
Obvious problems result in frequent failures or the inability to start the engine in a timely manner. In most cases, the problem is caused by the electrical part of the ignition switch. Trucks of the GAZ family and buses can fail their owners due to burnt or oxidized contacts. To restore the functionality of the unit, we recommend studying what the Gazelle ignition switch circuit looks like.

How does the ignition system work?

The system for models with a 402 engine functions similarly to those systems installed on cars with a 406 engine or in a five-seater vehicle. The main tasks performed by the installation are based on the accumulation and subsequent transformation of voltage from low voltage to high voltage. Coils are used for this.

The voltage converted from the coil is sent to the spark plugs screwed into the block. A spark is formed between the spark plug electrodes, which ignites the combustible mixture. The main stages for the Gazelle ignition system are:

formation of sufficient charge with low voltage;
raising the charge to high values;
redistribution of impulse between candles in the sequence specified by the manufacturer;
sparking at the tips of spark plug electrodes;
timely ignition of the air-fuel mixture.

To start the rotation of the engine crankshaft, a starter built under the hood is used . Voltage begins to be supplied to it after turning the key to its extreme position.

The principle of operation of the Gazelle ignition system

First, let's look at the operating principle of the SZ Gazelle 402 engine. In this case, we are talking about any models of this car - both with a 406 engine and 5-seater Gazelles. The principle of operation of the SZ lies in the accumulation and further conversion of low-voltage voltage into high-voltage voltage using a coil after that. After conversion, the coil transmits and distributes high-voltage voltage to the spark plugs of the system. The spark plugs themselves are used to generate a spark, which, in turn, is necessary to ignite the air-fuel mixture in the cylinders.

The main stages of the work of the SZ:

accumulation of low-voltage charge;
converting it to high voltage;
distribution of impulse over the corresponding candles in a certain order;
creating a spark on the spark plug electrodes;
ignition of a flammable mixture.

Pinout of Gazelle ignition switch contacts

Firing order

The connection diagram for the cylinders on the Gazelle, that is, the order of their activation, for the 406 engine is as follows:

first the mixture ignites in the first cylinder;
then the caviar is served on the third;
after that - to the fourth cylinder;
The second cylinder is the last to start working.

Basic elements of SZ

Briefly about the main components of SZ:

an ignition module that includes several coils;
switching device;
distribution mechanism;
candles;
spark plug tips;
elements connecting the spark plugs to the coil are high-voltage cables.

Repair work with lock

The driver may encounter a situation in which the motor does not respond after turning the key. One of the probable reasons is a poor connection in the contacts or the connection diagram of the Gazelle ignition switch has been broken. You can carry out repairs yourself in a garage.

With each new start of the engine, the starter may not start the first time, but after 3-4 attempts. Blaming the battery is not always correct. You should look for the cause in the ignition switch, where its switch is located.

Testing begins by disconnecting the electrical connector. Next, using a small piece of wire with uninsulated ends (a bug 6-7 cm long), we close the contacts in the wires of the block suitable for the lock. It is necessary to clarify in advance which wires will be closed in the first position of the key according to the diagram. Next, using a similar bug, we close the starter contacts for a short time (1-2 seconds).

If all operations are tested correctly and respond to the driver’s actions, then it is necessary to repair the contact group or the lock as a whole. The operation begins with dismantling the casing. At the next stage, remove the plastic cover, behind which the ignition switch itself is hidden.

The designers provided for its fixation in the groove to prevent rotation during operation. To assemble, return the plastic cover to its place, screw on the casing and connect the connector.

It is important to know that the cost of the ignition switch is less than 200 rubles.

The pinout of the Gazelle 5-pin ignition switch is slightly different. It is shown in the picture.

Lock replacement and repair

If, when you try to turn on the key, nothing happens in the lock, that is, the engine does not start, the problem may lie in a poor connection of the contacts. You can try to repair such a lock, but if this does not help, then the device will have to be changed (the author of the video is Sergey Vishnyakov).

Replacing the contact group

This task is performed as follows:

Photo gallery “Changing the contact group”

Changing the lock

To completely change the lock, do the following:

Complete lock replacement

To install a complete lock, you must first remove the contacts from the battery. Then you need to perform the following operations:

We dismantle the casing;
to remove the clamp, carefully use a grinder so as not to damage the main axis of the steering column;
experts recommend turning off the steering column so that subsequent operations can be carried out conveniently, while the steering wheel is raised to its maximum height with preliminary loosening of the fixing bolt with a 12mm wrench;
It is worth sketching or remembering the position of the curly bracket installed next to the head of the fixing bolt for subsequent comfortable assembly;
dismantle the old ignition;
we use a new bracket, make slots in the sides where the heads of the lag screws are supposed to be placed, otherwise the heads will rest against the edges, which will not allow them to be securely fixed;
put the lock in the seat and screw in 4 screws with maximum force;
A couple of 12 nuts, unscrewed in advance, should not be tightened to the maximum, so that there is still freedom to adjust the clamp.

Before installing the casing, we test the assembled unit for functionality. If problems arise, we bring the adjustments to working condition, and only then install the decor.

During operation, the ignition switch undergoes large mechanical and electrical loads, so the contact or mechanical part of the lock fails.

To replace the ignition switch, you will need a 10mm socket, screwdrivers, a thin, sharp chisel, a hammer, and new bracket mounting bolts.

Disconnect the negative terminal of the battery.

Removing the steering wheel

Unscrew the two screws in the recesses of the lower part of the casing

Pull up and remove the upper part of the casing

Unscrew the two screws securing the lower part of the casing to the steering column

Remove the lower part of the casing

Unscrew the four screws securing the steering column switches

Remove the screws from the holes

Remove the lower decorative trim of the instrument panel

We disconnect the white block of the wires of the left steering column switch

We also disconnect the black block of the wires of the right steering column switch

Removing the switch block

Disconnect the instrument switch wire block

It is necessary to remove the elements described above to gain access to the ignition switch mounting bolts.

Using a chisel, unscrew the two bolts with shear heads.

Removing the ignition switch

Install the ignition switch in the reverse order using new bolts.

In order to replace the switch contact group:

- disconnect the negative terminal from the battery

When removing the locking ring, it is possible that the terminals of the contact group may be accidentally shorted with the tool or ring.

In this case (if the battery is connected), unauthorized starting of the engine may occur! And if at this moment the gear is also engaged, the car may begin to move spontaneously.

Removing the lower decorative panel

Disconnect the wiring harness of the instrument switch

Use a thin screwdriver to pry up the retaining ring.

Remove the retaining ring

Extracting the contact group

After removing the contact group from the switch body, the spring of the starter lock pawl may fall out while the engine is running. Don't lose her. Without a spring, the lock will not work.

Before installing the contact group into the switch body, press out the starter locking pawl while the engine is running.

To do this, use a thin pin to press the pawl stop through the technological hole in the housing.

While holding the pawl depressed, install the contact group in the reverse order of removal.

The retaining ring must be securely installed in the groove of the switch bracket.

If the new contact group does not have a wiring harness, unsolder the wires from the terminals of the replaced contact group and solder them to the terminals of the new contact group in the following order:

1 - white wire to pin 50;

2 - red wire to pin 15-1;

3 - pink wire to pin 30-1;

4 - brown wire to pin 15-2;

5 - yellow wire to pin 30.

Gazelle ignition switch pinout 5 pins – Gazelle ignition switch connection diagram

Online repair and operation manuals for GAZ 2705 / 3302 Gazelle cars since 1994, ignition and starter switch, ignition switch, read and download instructions for repair, maintenance, operation of cars

How does the ignition system work?
Ignition and starter switch (ignition switch)
Element structure
How to easily and quickly install a lock and other elements of the ignition system on a Gazelle?
Repair work with lock
Ignition switch gas 3110 wiring diagram. Connecting the ignition switch gazelle
ignition switch gas 3110 wiring diagram
ignition switch gas 3110 wiring diagram
Replacing wiring on a Gazelle car
Additional replacement materials
Places requiring installation work
Video “Features of connecting the ignition switch in a Gazelle”

Technical differences

Electrical wiring Gazelle 406 under Mikas 7.1

A power unit that has exhausted its service life is replaced, often giving preference to more modern versions.

Structurally, everything fits into the factory seats, and the differences, for example from the Gazelle Business, appear only in the electrical wiring diagram at the location of the equipment:

Another form of connecting blocks;
A different diagram for connecting devices;
Different voltage.

Supply system

Leaving the carburetor in the past, replacing the power unit inevitably entails replacing the power system:

A new gas tank is installed, since the injector must dump excess fuel back, and the old tank design is not suitable for this;
The gas line is replaced (the return line is laid + the supply connection is modified);
The operation of the injectors is regulated using connecting wiring.

Cooling system

The new injection engine ZMZ-406 is more demanding on the cooling system, therefore, during the installation of a new power unit:

An electric fan is installed on the cooling radiator;
The engine compartment wiring harness is being replaced.

Fuel injection control system

Mikas control unit, connected in the engine compartment

Do not forget that the power supply system of an injection engine is controlled by an electronic unit, which also needs to be connected to the vehicle’s standard electrical network. Accordingly, the electrical wiring on the Gazelle 406 is different than on older versions of the car with 402 series engines, and must be replaced.

How does the ignition system work?

formation of sufficient charge with low voltage;
raising the charge to high values;
redistribution of impulse between candles in the sequence specified by the manufacturer;
sparking at the tips of spark plug electrodes;
timely ignition of the air-fuel mixture.

Wiring diagram for the ignition switch, coil, spark plugs and module on a Gazelle with 402 and 406 engines

Car ignition is a set of devices and instruments that ensure ignition of the combustible mixture in the cylinders in accordance with engine operating modes. I will tell you what this coil is and how important its correct operation is for the ignition system. Let's look at what the ignition coil connection diagram looks like, and what it actually consists of.

articles

1 How to connect a coil
2 “Ignition coil connection diagram”

The main stages of the work of the SZ:

accumulation of low-voltage charge;
converting it to high voltage;
distribution of impulse over the corresponding candles in a certain order;
creating a spark on the spark plug electrodes;
ignition of a flammable mixture.

Pinout of Gazelle ignition switch contacts

Firing order

The connection diagram for the cylinders on the Gazelle, that is, the order of their activation, for the 406 engine is as follows:

first the mixture ignites in the first cylinder;
then the caviar is served on the third;
after that - to the fourth cylinder;
The second cylinder is the last to start working.

Basic elements of SZ

Briefly about the main components of SZ:

an ignition module that includes several coils;
switching device;
distribution mechanism;
candles;
spark plug tips;
elements connecting the spark plugs to the coil are high-voltage cables.

Replacing wiring on a Gazelle car

The reasons causing the need to replace the electrical wiring according to the diagram in Gazelle cars are not only due to the overhaul of the power unit, but also:

Due to natural wear and tear of wires;
Delamination of insulation due to natural aging;
Mechanical damage (kinks, scuffs);
Short circuits in one or another electrical circuit;
Oxidation of contacts and connectors.

Additional replacement materials

In addition to purchasing new electrical wiring, those corresponding to the motor used must also be replaced:

High voltage wires;
Electronic switch (in later versions of motors of the ZMZ-402 series);
Ignition coil;
Battery charge level relay;
Fuse block contact group;
Egnition lock.

Places requiring installation work

Laying the wiring harness is not a difficult task, especially since the places for their attachment to the frame are provided initially (gutters, service holes, etc.).

Gazelle interior with disassembled dashboard

However, according to complexity, replacement work is divided into areas of responsibility:

Engine compartment;
Vehicle interior;
Rear part of the body.

The easiest part in terms of connection is the rear part of the car, where you only need to secure the harness and connect the rear lights and the fuel level sensor in the gas tank. The interior and engine compartment are more complex.

How does the ignition system work?

formation of sufficient charge with low voltage;
raising the charge to high values;
redistribution of impulse between candles in the sequence specified by the manufacturer;
sparking at the tips of spark plug electrodes;
timely ignition of the air-fuel mixture.

To start the rotation of the engine crankshaft, a starter built under the hood is used . Voltage begins to be supplied to it after turning the key to its extreme position.

Electrical system of a Gazelle car

The transition to multi-valve injection engines is possible and even recommended by the automaker, but owners are not always satisfied with this approach, especially from the financial side.

Advice: Be that as it may, when removing the motor for overhaul, the owner has the opportunity to replace the old electrical wiring.

If the resource of the restored power unit inspires optimism, and you have a Gazelle wiring diagram at hand, the 402 engine may well last for hundreds of thousands of kilometers.

Electrical wiring diagram for Gazelle 402 engine

How to connect a coil

The ignition coil is a transformer whose operation is aimed at increasing direct current. Its main task is to generate high-voltage current, without which ignition of the fuel mixture is not possible. Current from the battery flows to the primary winding.

It consists of one hundred or more turns of copper wire, which is insulated with a special substance. Low voltage voltage (twelve volts) is supplied to the edges. The edges are connected to the contacts on its cover. On the secondary, the number of turns is much larger (up to thirty thousand) and the wire is much thinner.

Ignition and starter switch (ignition switch)

The switch consists of an anti-theft mechanical lock and an electrical switch. The switch key has four positions:

0 – ignition is turned off;

I – ignition is on;

II – the ignition and starter are turned on. Return to position I is automatic. The secondary activation of the starter is possible only after the key is turned to position 0.

III – the ignition is turned off and the anti-theft device is turned on when the key is removed.

To check the serviceability of the ignition switch, it is necessary to assemble the electrical circuit shown in Fig. 9.27.

Electrical diagram for checking the ignition switch:

accumulator battery;
control lamp;
ignition switch connector

When turning the key to position I (ignition on), lamps A and B should light up, and when turning the key to position II (ignition and starter on), lamps A and B should light up. In positions 0 and III, lamps should not light up. The voltage drop between terminals 30/1 and 15/1 should not exceed 0.25 V at a current of 20 A. A faulty switch must be replaced.

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How to easily and quickly install a lock and other elements of the ignition system on a Gazelle?

The performance of the automotive ignition system (ISY) directly affects the functionality and operating condition of the vehicle engine. Accordingly, the failure of one of the system elements can lead to minor or even serious problems in the operation of the power unit. What is the operating principle and order of the SZ, how to replace the Gazelle ignition switch - read more about this below.