Just did that 2 days ago when I was sharp-shooting the EFI primer/ignition issue. All fuses good. I don’t know how to check the relays (3) in the engine compartment fuse box though… if THAT has any relevance? And FWIW, my fog lights haven’t been working for a while now. Don’t know if that’s the switch or the relay but all wiring in place per usual. They just all of a sudden stopped working for no apparent reason :-(start simple, check your fuses.
I checked them all: under hood and under the dashtesting relays can be as simple as just swapping them. They are the same pin out on the bottom so you can just pull one out and slap in in the other and see if it works. You checked all the fuses under the hood/dash or just the ones you thought were related according to the manual?