I do not think that there is a wiring diagram available for the EVO 1000 electric scooter. I have only seen an owners manual for it which does not have a wiring diagram included in it.
I understand that you tested the controller and battery pack and verified that they are OK. The only way I know to verify that the controller is working is by getting the scooter to run. If this is the case did you get the scooter to run by bypassing the power switch?