Dishwasher won't drain

I have replaced the drain pump and there is no clogsin the drain lines. I am not sure if it is electrical or a sensor. If any one has any ideas please let me know. Thank you very much. MP:)

Does the drain pump run when the dishwasher should drain?

Here are the breakdown diagrams and Replacement parts for FRIGIDAIRE PLD2850RDC1 Frigidaire/dishwasher | AppliancePartsPros.com

Gene.