Nissan 25230-7991D Relay

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Fuses are meant to interrupt a circuit but at a certain amount of the current; the amount of current that is intended to be interrupted by the fuse is used to protect the components and the wiring against further current and since this is normally as a result of a short charge. The main fuses are the 10 milliafarads or greater, and these are housed behind a cover at the left hand end of the facia to reach the main fuses, one must pull open the cover flap. Starter and driving motor fuses and circuit-breakers are located in a supplementary fuse-box in the engine compartment on the battery side, on some models there are further fuses for the heating and light switches to the left of the drive motor and further fuses in the roof of the main fuse-box above the glove-box. A faraway sign is if the fuse wire looks melted or consolidated and it should be noted that before removing the fuse, one should first disconnect the relevant circuit. A plastic implement is clipped into the primary fuse panel and by drawing it, one can replace the fuse; other spare fuses are normally stored in the primary fuse panel. Also, before replacing the fuse, the cause should be found and fixed and only the fuse of the correct rating should be put as usage of the higher rated fuse or any temporary remedy of wire or metal foil may lead to more damages or fire. The fuses are of different capacities and are given different colours for efficient distinction and differentiation. Relays are used as remote-controlled switches for heavy electric currents, multiple control signals, and timing such as in wipers. Other relays are also mounted behind the facia and in the fuse boxes and at numerous other positions inside the car. If a given circuit s powered by a relay has a fault, the circuit can be run to given test on the relay; if the relay clicks as it is energised, then the problem lies within the circuit components or wiring while if the relay does not click, then it can be due to lack of supply or a bad relay. Proper substitution should be carried out using a well known relay to check its efficiency, however, different relays may look almost similar, but their functions may differ. To replace a relay, the proper procedure is to first turn off the associated circuit then using a small amount of force, pull the unit out of the socket and then insert it back into the matching opening.

Most relays are typically mounted in the engine compartment and in the interior fuse and relay boxes.