water will not pump out during wash cycle?

Hotpoint aquarius washer dryer 1000 wd23p , will not pump out water during wash cycle, i have cleaned and checked for blockage through out the machine.its now ok and like new. Pump runs when connected to its own power,is lasy pump poss ? can i check the power to connecter block wires with multimeter with out filling machine with water ? and check pump works on the machine ?I think the wires go back to the Tomer control unit. Any ideas or things i can try ? Thanks people.