There should be some sort of electrical switch which activates when the lever is pressed. Look up inside and see if the switch is being activated.
If you have a round coil of wire in the ice compartment which turns to bring the ice forward, be sure it can rotate and is not "glued stuck" with ice.
Some of these compartments come out. Be sure it is all the way back and installed properly.
Other than that, there should be a wiring diagram in the motor compartment. Get out your electrical meter and start tracing circuits. If you don't know how to use a multi-meter, call an appliance repair person.