Finding fault location

One way to find the short circuit is to extract the fuse and wiring instead lamp or voltmeter probe. The tension in the chain should be absent. Pulled wiring, watching the lamp-sampler. If the lamp flashes, somewhere in the wiring harness has a short to ground, possibly caused by rubbing the wire insulation. A similar test can be performed for each of the components of the electric circuit by incorporating the respective switches.

Check of earthing

This test is performed to determine the reliability of the grounding circuit element. Disconnect the battery and connect one wire having a self-contained power source lamp probe to a known good ground point. Another wire to connect the lamps inspected harness electrical connector or terminal. If the lamp lights up, grounding in the order (and vice versa).

Checks for open

Checks are made to identify the continuity circuit After a power circuit, check it with a lamp-sampler equipped with independent power supply. Connect the probe to both ends of the chain, if the warning lamp lights up, there is no open circuit. If the lamp is not lit, it indicates the presence of a chain break. Similarly, the same way you can check the power switch and connecting the probe to the terminals. While translating the switch in the "On" lamp should illuminate the probe.

Locating the break

In the diagnosis of a suspect for an open circuit portion visually detect the cause of the fault proves to be rather difficult, as inspection terminals for corrosion or violation of the quality of their contacts is difficult, due to the limited access to them (normally closed terminal housing electrical connector). Sudden twitching body connector on the sensor or its wiring harness in many cases leads to the restoration of contact. Keep this in mind when trying to localize the causes of failure of the suspect for an open circuit. Unstable occurring failures can be caused by oxidation of terminal or violation of the quality of contacts.

Troubleshooting of electrical circuits is not an intractable problem, provided a clear idea of what an electric current is supplied to all consumers (lamps, electric motor, etc.) from the battery through the wires through switches, relays, fuses, fusible links, and then returns a battery through a mass of the vehicle body. Any problems associated with electrical failure may have its only cause them to cease supplying electric current from a battery or returning it to it.

Wires, fuses and relays

Protection of electrical circuits from short circuit is achieved by using combined fuses, circuit breakers and fuse links. Blown fuses are easily distinguished from the serviceable inspection by its transparent plastic housing. Inspect the fuse to identify his burnout. If the fuse looks good outwardly, but suspected his condition remains, make a check continuity between terminals knife protruding from his body.

When replacing the fuse of the conformity of the nominal value of the new par value of the old guard. Designed for different amperage fuse may appear to look the same, so special attention should be paid to labeling. Replacing a blown fuse on designed for smaller - and especially large - current strength is undesirable. Each electric circuit needs to varying degrees of protection. Make sure that the markings on the body of the fuse corresponds to a current, to which the respective chain. If a replacement fuse blows immediately, not reasonable to continue his replacement. First of all, should be to identify and eliminate the cause of his burnout. In most cases, is that of a short circuit in an electrical circuit caused by breakage or damage to the wire insulation.

Fuse

Protection of certain electric circuits is carried out by including fuse links. The inserts are typically used to protect the circuits which are not equipped with fuses, such as a chain ignition system.

Fuse similar to the fuses in the sense that their failure (melting) is easily determined visually.

To replace the fuse, disconnect the negative battery cable. Remove burnt box and install in its place a new one. Before replacing the insert is required to try to determine the cause of the overload that caused the output of the inserting system.

Circuit breakers (thermal relays)

Thermal relays are used to protect components such as electric windows, door locks and adjusting the headlights (electroproof). Some circuit breakers are installed in the mounting block. Return thermal relay to the original state on some models automatically, ie in the event of an overload in the circuit thermal relay opens instantly, and then, after cooling, is returned to its original state. If the return path to the working position does not occur, you should immediately make an inspection. Normal functioning of the thermal relay confirms serviceability of the circuit. Some of the breakers are equipped with buttons for manual forced reset.

Replacing fuses

To prevent short circuits and overloads electricity consumers individual circuits are protected by fuses. On cars Hyundai fuses are used corresponding to the latest technological advances, these fuses are blade contacts.

Before replacing a fuse, first be sure to disconnect the relevant consumer.

Pry the fuse box cover narrow screwdriver and remove it.

Blown fuse is identified by the molten metal strip. Fuse is shown inside the cover of the fuse box.

Remove the defective fuse plastic tweezers, located in the cover of the fuse box (Fig. 7.3).

Insert a new fuse of the same rating (amperage).

If the newly inserted fuse blows after a short time, you should check the appropriate circuit.

In no case do not replace the fuse wire or similar aids, as because of this in the car's electrical system can cause serious damage.

It is always recommended to have in the car a set of spare fuses of different values. For storage in the fuse box provided for the appropriate place.

Fuse applied to the back of the body of the fuse. Furthermore, the housing has a corresponding color, which can be determined by the rated current.

Relay

For supplying electric current to certain elements of the vehicle's electrical relays are used. Infringement of serviceability of functioning of the relay leads to a refusal to serve their element. In the event of a suspected malfunction of any of the relays, it must be removed and subjected to inspection at the service station or in a specialized repair shop. Replacement of the failed relay is made in gathering.