How to test coolant fan relays?

typically one of the electric fans is reserved for condensor cooling, so if there are two fans one will come on at a predetermined engine coolant temp and the other will turn on when your a/c is on. is basically what he is saying. good luck. and relays are not too hard to test, there is usually a schematic on the side read that and jump power and ground, its usually 85 and 86 to close 30 and 87.