The position of each fuse is marked on the fuse box, indicating which circuit it protects. But at the same time, designations such as BACKUP, CCON or IG1 may not tell you anything. A fuse can control the current in more than 1 circuit, i.e. in several connected circuits. It is necessary to preserve the location of the wires and fuses. If each circuit has its own fuse, the fuse box will be huge.
The fuse box under the dashboard and under the hood has a special fuse extractor that can be used to grab and remove a fuse. You cannot check the fuse inside the fuse box; you must remove it. Examine the fuse from different sides, looking for a broken element in the center. Sometimes it is difficult to identify a breakage. If you cannot check the fuse with an ohmmeter for continuity, it is better to replace the fuse. If the fuse melts, turn off the ignition. If the new fuse melts immediately, the circuit should be checked for a short circuit, damaged insulation, or a loose contact.
DO NOT use fuses with a higher amperage rating than recommended.
