Electrical equipment: mounting block

The mounting block is installed on the left side of the car in the air intake box and serves to provide interconnection of the interconnected circuits of various electrical equipment systems. In its plastic housing are printed circuit boards, which through current-carrying tracks contact the plug-in terminals of the connecting pads. Each of them has a number of jumpers and switching relays, due to which the inclusion of various electronic systems of any car. In addition, fuse holders are also installed here, which, depending on the parameters and load of the circuit, are designed for a current of 8 or 16 amperes.

In the event that an overload or short circuit occurs in one of the circuits , the protective plug of the corresponding fuse blows. In other words, the mounting block allows to prevent damage to the devices or wires of the car. If such a malfunction occurs, the insert that has burned out must be replaced with a new one.

Maintenance of the mounting block

In order to ensure a long and reliable service of the electrical equipment of the car, it is very important to make sure that the connecting blocks are securely fastened. Due to the fact that the mounting blocks have a transparent cover, it is not so difficult to control. It also indicates the numbers and intended use of fuses and relays. If the performance of any system is disrupted, it is first recommended to check how well the corresponding wiring harness kits are securely connected, as well as the integrity of the safety insert. During the check of the electrical equipment, the terminals and wires that are under voltage must not be shorted to ground in any case. Otherwise, the live tracks that contain the mounting block may burn out.

Dismantling and assembly of the assembly unit

In most cases, the repair of this unit is reduced to replacing the circuit boards. To disassemble the box, first remove the cover and remove the fuses, jumpers and relays from the sockets. Then loosen the fastening screws, and remove the upper part. After that, the PCB assembly can be removed from the bottom of the housing. Assemble the car assembly unit in reverse order.

Repairs

If the slightest cracks appear on the boards, they should be changed to new ones. It is very important to monitor the attachment of inserts, and in case of its weakening, the holders must be bent. Inserts that have burned out must be replaced with those that correspond to the maximum possible current. Otherwise, they may burn out. Do not install any foreign elements or self-made inserts into the car's mounting block. The worst result in this case may be the fire of wires in the harness. When installing the box in the machine, do not forget about the use of a special gasket, which will ensure the integrity of the joints around the perimeter of the housing.