if this is a "dish drawer " style dishwasher and i think it is it is a fairly complex appliance. the first thing that happens after the drawer is closed is the lid will close, there are two small motors inside the cavity that ram the lid up or down before water enters the dishwasher, then the dc voltage hi rpm pump begins to run. it is possible you are hearing the lid trying to close and failing to do so it will stop. this dishwasher has a diagnostics mode which can be entered but you need the service manual which is attached to the back wall inside the cavity ( you can see it if you pull the drawer all the way out but you cant reach it without removing the drawer from its roller guides.)
hope this is of some help
You can enter the diagnostics mode by pushing keylock,and holding it in. Then push and hold start/pause in that order. If you push start pause first it just counts through a delay start.
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