Not sure on your actual question, but you do t want to use WD40, use a connector/electronic cleaner. Have you checked the relay? Start at the fans and go backwards. You have already tested the fans. Now go back.
2001 ZX3 2.0L Zetec-
Hatch Nation #42
Going through Rebuild See "The TICK Build Thread" for details (http://www.focusfanatics.com/forum/showthread.php?t=289168&referrerid=62897)