Have you checked that the pump is actually receiving power? If not disconnect the pump wires and with a multimeter check if power is being supplied to the pump during the end of cycle pump our or initially on start up of the program (first few seconds) - Ian
It is much more likely to be the power cables to the pump, the pump itself or the main pcb that is at fault. If as mentioned earier you start the appliance the pump will pump for the first few seconds, certainly within the first ten after start up irrespective of sensor input.
OK I await you observations.
OK would you at this point rate the information given sofar, once done all further questions are free of charge. I would if I were you check the actual voltage across the pump connectors. A neon will work from about 80volts upwards - the pump however will only rotate from about 180volts upwards.