It sounds like you may have a hydraulic pressure problem. I would try to check the forward and reverse pressure out of the pump and compare them. Then you would be able to see way it is not moving and just determine if it is a pump problem or an electrical problem. Are your voltage readings at the valve coils? If they are that reading may not be right because the coils are usually PWM so your meter is just reading average voltage. You need to check duty cycle or look at it with a scope.