take the road wheel off it gives more room to work ,inner splash guard off ,bottle then becomes VISIBLE pump(s) mounted in the bottom of the washer bottle,with the wires removed to one pump only, test across with a 12v test light operate the washer switch if it LIGHTS supply OK pump problem ,No light fuse problem supply problem broken wire, bad earth. Repeat test for the other pump
wirecutterman, March 2008