Can not jog new DIY CNC router


I just built a 48" x 48" CNC router and can not get the unit to jog on the Y axis. The X and Y both seem to jump and only go in one direction, I have checked the wiring multiple times and I don't find any issues. Could this be a programming setting that I am missing? I do not have the homing switches installed yet, will that be causing the problem?