Water leak into the base. How do I find it?

Aside from removing the dishwasher and setting it up on a test stand, how do I find the leak? There is not alot of viewing from the front. I suspect one of the pumps are leaking but I’d rather be accurate than guess. From what I can see, the water inlet valve and hoses look ok. There is water forming below the circ pump but I can’t be 100% sure its the source. Is there a common repair problem with this model? I’m an HVAC tech, so repairs are what I do. Unfortunatly, I have not been able to locate an exploded view of the parts to assist in the diagnoses.

You have to remove the dishwasher from the cabinet and remove both side panels to pinpoint the leak. There is no other way to do it.

Gene.