Fuse and relay blocks Gazelle, Sable first generation

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08.10.2019

Depending on the year in which the GAZ-2705 and GAZ-3302 cars were produced, the Gazelle electrical circuit is protected by common fusible links, which are designed for different current ratings. And additional fuse blocks are located on a bracket, which in turn is installed on a shelf under the hood.

Fuses and relays in the cabin of Gazelle, Sable (first generation, square headlights)

The fuse boxes are located at the driver's feet, at the bottom of the control panel.

Old type fuses are located in two identical blocks of ten pieces each, such blocks are extremely unreliable and poor contact in such blocks is not uncommon, we strongly recommend that you replace such blocks with new, more modern ones, and in no case insert five-ruble coins, bolts or anything else instead of fuses. making bugs leads to fires!

description of fuses

Gazelle upper fuse box

Gazelle lower fuse box

location of the starter relay and turn relay Gazelle and Sable

Fuses Gazelle 3302 2705

Gazelle fuses have their own color depending on the current strength. And if in the old-style car the green color corresponded to 16 Amperes, and the black color corresponded to 8 Amperes, then in the new-style cars the fuses have a wider range of colors:

1. Red color corresponds to 10 Amps.
2. Orange - 5 Amps.
3. White - 25 Ampere;
4. Blue - 15 Amperes;
5. Yellow - 20 Amps.

This color division will help when replacing a blown fuse: you won’t need to look through each one, but just take the fuse of the desired color.

switch and relay located under the hood on Gazelle and Sobol

Fundamental differences in the design of the fuse box depending on the Gazelle model

This is what the new fuse box looks like

The design differences of the modification of the Gazelle class, based on various electrical equipment protection systems, can be divided into the following main groups and their features can be highlighted. Watch the video on how to install a new fuse box.

Cars with carburetor-type gasoline engines

1. Cars produced before 2003:
2. equipped with old-style electrical fuse modules with cylindrical type fuses with a nominal value of 8 and 16A;
3. control relays are installed separately from the mounting block;
4. the engine compartment block (BPR-2) has power fuses of 40A for the light circuit and 60A for the general plus.

5. Models 2003-2010:
6. new-style units with plastic fuses with protection thresholds of 5, 10, 15, 20 and 25A were installed, depending on the equipment;
7. control relays are also located independently of the unit;
8. The power protection module can be different:

1. BPR-2 with protection of 90A for the light and generator circuits and 60A for the general plus.

2. BPR-4 for cars with a pre-installed anti-lock braking system and additional 25 and 40 A electrical fuses.

Cars with gasoline injection engines

1. The main fuses of plastic type 25, 10, 15, 20 and 5A for various circuits are combined into a single mounting module located in the cab.
2. The main control relays are included in the unit.

This is what control relays look like for a Gazelle car

Installation process of protective relays

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

Gazelle electrical circuits

The electrical circuit of the Gazelle commercial vehicle may differ primarily depending on what engine is installed in the Gazelle. The electrical wiring also differs depending on the type of body - for example, the all-metal GAZ 2705 van has rear lights located differently than the GAZ 3302 flatbed truck. Accordingly, the wires are laid in a different place, having a different length.

Wiring in the cab of a GAZ 3302 truck

Relay group

The relay panel is located in the same block as the fuses. Marked as follows:

• No. 1 – ensures normal operation of the windshield wiper and wipers;
• No. 2 – door lamp;
• No. 3 – fog lights;
• No. 4 – heated mirrors;
• No. 5 – low beam;
• No. 6 – heating system pump;
• No. 7 – sound indication of a turn;
• No. 8 – high beam.

There is also a fuse box in the engine compartment.

How to determine the malfunction?

If malfunctions occur in the operation of the equipment, first of all you need to check the integrity of the safety devices. If a short circuit or voltage surge occurs in a wiring circuit, the safety elements are the first to fail, protecting the major devices and electrical equipment connected to a particular circuit. Since a visual check is not always effective, troubleshooting should be done using a tester - a multimeter.

The diagnostic procedure consists of removing the fuses from their seats and further checking the sockets. If you have identified a failed fuse, this does not mean that the test can be completed, since a short circuit can occur simultaneously in several circuits (video author - Denis Legostaev).

If a short circuit occurs in the wiring of a car with a carburetor or injection engine, then you need to diagnose the condition of the circuits. Of course, if all the fuses were intact. Before diagnosing, you should disconnect the mass; directly for checking you will need a tester or test light. When using a lamp, one of its contacts should be connected to the base and the other to the center contact.

The check itself goes like this:

• First, the ignition key should be set to position I;
• then the probes of the tester or lamp must be connected to the contacts in the fuse sockets in turn;
• if the lamp does not light up, this indicates that there are no short circuits in the section of the circuit being tested, but if it lights up, then a short circuit has been detected.

Another important point is diagnosing the integrity of electrical circuits. In this case, the search principle is quite simple - for diagnostics you will need the same tester (a voltmeter or ohmmeter will do) or a lamp with wires. You will need to connect one of the probe contacts to the vehicle body, and use the second contact to measure the power at the connecting points between yourself and the equipment.

It is best to start in the middle of the circuit and check easily accessible areas first. In addition, to diagnose a break, it should be understood that most often circuit damage occurs in places where the wiring is bent. Moreover, as practice shows, wire harnesses are very rarely damaged.

Another breakdown in the electrical circuit is poor contact at the connections; searching for such a fault is best done using a tester - a voltmeter.

There are two diagnostic methods:

1. One probe of the tester should be connected to the car body, and the second to the connection terminal; voltage measurement is carried out in both directions. Please note that the voltage drop should be no more than 0.5 volts.
2. The next method is to connect one wire to the contact on one end of the plug, and the second to the contact on the other side of this plug. If the tester shows more than 0.5 volts, this indicates that the contacts on the plug should be cleaned (the author of the video is the MZS TV channel).

General in the electrical equipment of "Gazelle"

Despite many modifications, the principle of constructing an electrical circuit is the same on all cars. All consumers of electrical energy are powered by a constant voltage of 12 Volts. The mass of the body and power unit is the negative wire, the electrical circuit is two-wire.

Location of the battery in the Gazelle

• Accumulator battery. It is necessary to start the engine. A discharged battery causes a lot of trouble for car owners;
• Generator. All consumers receive electricity from the generator while the engine is running, and the generator recharges the battery;
• Starter. A device that starts an engine. If the starter is faulty, the car can be started using a pushrod. But this is not recommended;
• Fuse box. Fuses are necessary to ensure that in the event of a short circuit the wiring does not burn and consumers do not fail. The fuses are collected in one place, making them easier to detect and troubleshoot;
• Electricity consumers:
• Lamps for flashlights and headlights, dimensions, interior lighting;

Rear marker lights on Gazelle

Replacing fuses

If there is no charging voltage from the generator, the dashboard does not light up, the starter refuses to turn on - the problem often lies in the fuses. The replacement process includes the following main steps:

• it is necessary to open the fuse box housing;
• then, using plastic tweezers or another tool made of dielectric, you need to pull out the fuse;
• a new one is installed, the nominal value of which must match.

The circuit diagram of the mounting block has standard symbols; understanding them will not be difficult. You just need to familiarize yourself with such a scheme in advance.