Circuit breakers
Various combinations of fuses, circuit breakers and fuse links are used to protect the contact circuits of the vehicle's electrical equipment. Mounting blocks are installed under the instrument panel and in the engine compartment of the vehicle. The layout of the blocks may vary depending on the model and year of manufacture of the car.
Each individual fuse is used to protect a specific electrical circuit or several circuits at once. The identification card for the placement of fuses in the mounting block is usually glued to the cover of the latter, from its inside.
The mounting blocks contain fuses of a compact design, equipped with bayonet contact terminals, and, if necessary, easily removed with fingers from their sockets in the block. In case of failure of any of the consumers of electricity, first of all, you should always check the condition of the corresponding fuse. Turn the key in the ignition switch to the ON position and, using a test lamp, probe the open terminals of each of the fuses. If the lamp lights up when connected to each of the terminals, then the fuse is good. If there is voltage only on the power supply side, then the fuse is blown. We also note that usually the fuse case is made of transparent plastic, through which it is easy to determine the state of the working jumper.
When replacing a blown fuse, make sure that the replacement fuse being installed matches the type of the fuse that came out of the element. Fuses designed for different rated currents may not physically differ from each other in any way, while not being interchangeable. Each of the electrical circuits has different operating parameters and needs a different degree of protection, therefore, replacing a fuse designed for a certain current strength with one that does not correspond to it in terms of parameters is fraught with the most serious consequences (until the fire). Fuse operating parameters (rated current) usually marked on its plastic case.
If the new fuse also fails immediately after installation, it makes no sense to replace it further - first, the cause of the overload in the circuit should be identified and eliminated. In most cases, this is a short circuit of the connecting wiring, caused by damage to its insulation.
Fusible links
Fused links are used to protect circuits in which conventional fuses cannot be used for any reason, such as the ignition circuit, as well as for power circuits in which high current circulates.
On the models discussed in this manual, the fusible links are placed in the fuse box located in the engine compartment.
To replace the fusible link, disconnect the negative cable from the battery and, pulling the failed element, remove it from its seat.
Attention! If the stereo system installed in the car is equipped with a security code, before disconnecting the battery, make sure that you have the correct combination to activate the audio system! Before installing a new fuse-link in place of a failed fuse-link, it is necessary to find out and eliminate the cause of the overload that has taken place.