Water will not drain after cycles are complete

Start with removing the screws in the bottom of the dishwasher and pull out the filter, etc. Clean everything you remove in a sink and soak in white vinegar anything is coated with minerals.
Inspect closely everything you can now see with a flashlight (watch out for broken glass!) Remove any debris found. Reassemble and test if removing any obstructions found.
If problems continue, run a short cycle and listen closely. When the pump should be running, do you hear the sound/hum of the motor turning (but water is not draining?) If yes, replace the pump motor.
If you hear nothing during the cycle when the dishwasher should be draining, the problem is almost certainly a failure of the timer/controller that controls the pump motor.
Good Luck!