Water not draining from tub - Kenmore Dishwashers

The drain pump pumps water out the drain hose. If the drain pump is cracked or damaged, or if the bearings are worn out, the drain pump may leak water. ... The tub seal might be torn, causing water to leak from the seal. If the tub seal is leaking water, water may leak through the tub seal and into the tub bearings.

if no drain at bottom usually with hose connection on it use a sump pump or syphon make sure power is off until fully refilled

If your drain is not high enough the water will siphon out while filling. Check your owner's manual for correct height, usually about 39 inches from ground

The water inside the tub will drain out when the pump filter is removed from the pump housing and flood the base of the washer. If not, the tub drain hose is clogged preventing the water to drain into the pump housing then out.

The door is locked because the foam switch in the pressure switch is open due to the presence of water after the unsuccessful drain cycle.

Disconnect the washer from the power outlet. Remove the three screws holding the lower front access panel to the cabinet and pull the panel down to access the pump housing.

Squeeze the clamp that hold the tub drain hose to the pump housing and slide it back. Prepare a pan to catch the water to prevent flooding. The tub drain hose maybe difficult to remove and you may need to insert something under it to break the seal and pull it off.

Remove the tub drain hose from the tub by squeezing the securing clamp and pulling it off the tub drain outlet. Clear the hose and the tub drain outlet from any debris.

Reinstall the tub drain hose and manually unlock the door before reinstalling the access panel. Reach and pull the release ring behind and up the right side of the front panel, then open the door.

The outlet of the drain hose must be higher than the water level inside the tub--normally the pump inside removes the water when needed. Get a plumber to install a proper height drain pipe for you.

First I would try to flush the pump, if the tub is still full of water. To flush the pump, take a garden hose sprayer and fit it tight into the drain hose. Give it a short shot of water, then stick the drain hose back into the drain. Put the washer on spin and see if any water comes out. You may have to do this more than once to clear the pump. If that does not work, siphon the water out of the washer and disconnect the hose from the pump to the drum. Clear the hose the best you can, pour a little water into the drum to check it. Check the pump too, take it apart if you have to.

I take it that you removed the drain trip linkage and stopper through the vent hole .
You must now run a small hand or small power snake the less than eight feet to open the drain.
You can also plug up the vent,tightly and  try a flat plunger on the tub drain .  

Check the drain hose to make sure you have a high loop, ie. make sure the drain hose loops above the height of the washer lid before going to the drain pipe.
Also make sure the drain hose is not going too far down into the drain pipe.
You may be getting a siphon effect.

Check to see if there is an open valve where the water exits the tub. If there is a valve, shut it and your problem should be solved. good luck

The washer puts out a lot of water when spinning/ draining, sounds like the house drains are not of sufficient size or possibly blocked causing water to backup into your tub, check house drains for blockage or install seperate drain for washer into main drain that your tub goes into.