Try this. First lets verify if we have power at the door dispenser, does the light turn on, can you dispense water? If so, open the door, remove the ice chest, press on the door switch,lights should go off, at the same time depress the dispensing lever, do this ice with the selector on crush and cube. On crush position only the ice maker screw drive motor should turn, on cube position the motor should turn and you should hear a solenoid snap loudly.
Some times ice accumulates and can jam the solenoid and the motor, just be sure you rule out ice before moving forward.
If the motor does not turn but you can hear/feel the solenoid then the fault is likely to be in the motor, if the the motor does not turn and the solenoid does not activate then the lever microswitch are likely to be the problem.