Check the ground where the fan itself grounds to the chassis, should be right behind the driver's side head lamp. I've had that one fail on me from corrosion over the years. Cleaned it up and it's been working since.
If you're not seeing any resistance from the ground on the relay, you have to follow the wire and see what the problem is.
1987 Milano Platinum - check for many new items. [B][COLOR="Red"][URL="http://alfabb.com/bb/forums/showthread.php?t=42980"]PARTING OUT[/URL][/COLOR][/B]
1989 Verde - Harsh shocks and SS rears, 27mm torsion bars, stainless lines, pads, 16X7.5 rims, 4.10 rebuilt platinum tranny, poly bushes, and RSR 28mm front and 25.4mm adjustable sways!
1984 GTV-6 - 80K miles