Sunroof is not working correctly

My sunroof is stuck in the vent position with the back open & one side higher than the other. When pressing the close position on the switch, nothing happens except for a click. When pressing the open position of the switch, the roof moves back about 1/2" on one side & stops. Pressing close again moves the one side of the roof that moved back forward the 1/2' then it stops. I've checked the fuse & it's fine. I referred to the Haynes repair manual, & it said to check the continuity on some of the terminals on the switch. Checking across the first 2 terminals on the right, there is no continuity as the book states. Checking across terminals 2 & 3, there is also no continuity, but the book says that there should be continuity. I also ran a jumper wire to ground as the book states but the roof did the same things as above. I do not want to take the motor out as I understand that it can be quite a lot of trouble to get the roof re-timed so that it works correctly. The book states that you should not take the motor out unless the roof is closed which it is not. Any suggestions?