Check the fuse.
The relay is difficult to test. You will do better swapping with another and seeing if it will turn the fan on.
To test the relay, remove it. Use aligator clips to hook the thing up to power and ground so it clicks closed. But then you have to use some electrical tape to keep the alligator clips from touching because the space is so close.
Once closed, you have to measure the resistance in ohms across the other two pins. It should have no resistance.
If no click heard or -OL- on the test, the relay is not closing to allow voltage across the points you are checking. If it does close, it should have no resistance. If it has resistance it is bad.
The ones that had been exposed to my bad fuel pump motor had I guess burnt contacts. You could easily hear either close, and both provided voltage all the way to the pump. But not enough amps could cross the relay to actually supply the motor.
