I have a Bosch logixx dishwasher. Model SGS65L22GB/07. it is not draining properly and is causing the program to stop. The detergent tablet was sitting on top of the dirty dishes when I opened the door. I have checked the impeller for debris but it is clear. I blew down the drain hose and this pushed about a mug full of water back into the machine. It does not seem to be blocked. I need to test the pump but cannot see how to access it. Can you advise how I get access to the pump on this model. Thank you. Patrick