Since both blue and green are defaulted to ground through the relays, If you grounded the blue and connected green directly to hot, the motor should have worked. If the motor did work but no movement was detected, the problem is inside the pump. There is a shuttle valve inside the pump. Frequently this shuttle will get stuck in the forward position--I suspect it is due to swelling of the center O-Ring. Sometimes, if you tilt all the way up and smack the trim piston a couple of good shots it will shift the shuttle just enough so that the unit will tilt and trim down. Alternatively, you can push down hard on the engine leg while operating the switch. ALTHOUGH there are pressure relief valves inside the pump and in the tilt cylinder, if you push too hard you will blow the pentagon cap off the trim cylinder (Don't ask how I know)
At any rate, these are temporary measures and even if you do get the unit to drop, it may function only once or only a couple of times before jamming again. The only real solution is to disassemble the pump and replace the shuttle O ring plus reset the pressure relief valves inside the pump