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Easiest way to check mooshimeters (or almost any multimeter) high current fuse is to set your device on resistance and short ohm and A-connectors with your probe(s).

Like there, on page 17:

Mooshimeter can’t give very accurate values near zero, but it’s not that common for these better fuses to show couple ohms when failed. If you get some ohms, there is more likely problem with your probes or meter calibration etc. I just tried my mooshimeter and it said negative 0,5 ohms, which would be impossible. I assume that everything is ok.

That fuse is only for current measurements, so it can’t affect resistance or voltage.