Jim,
Loosen the water line fitting, the garden hose type that goes to the solenoid valve, and see if water starts leaking or spraying out. If it does, you'll need to first check for a clogged screen at that point. If o.k., check the resistance of the valve coil. It may be open and will require replacement. If that's o.k., disconnect the leads and try putting voltage from a separate source to the coil directly. Should click and flow water. If not, dis-assemble the valve, clean and re-assemble. When taking apart, be careful 'cause there's a spring which could jump out at you, and a small plastic part that could be installed in two different directions. Only one will work, so make sure you take notes. It's not a difficult task, but I put mine back together the wrong way and had to do it over to make it right. If you applied an alternate voltage to the coil and it worked, your problem is almost surely a bad microswitch. While measuring for voltage at the valve, start another cycle manually and watch for voltage there. Go thru a complete cycle while watching the meter; it should show voltage for about 5-6 seconds. If not, that pretty much verifies a problem with one of them. Unless someone removed it, you should find a schematic tucked away inside the square cover you removed, and that should help you determine which one controls the valve. Let me know what you find.
