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Welcome, I'm Chris (aka Moose) I prefer to work when others don't, I am here around lunch and after dinner till after midnight.
So all wiring to the EPS, power and ground and communication are fine?
Is the scan tool showing any U codes for module communication?
Now there is no steering assist at all?
At the power steering module
These are the diagrams I am using if needed.
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Every reading is good except the 9 volt reading on the RD/BK wire. You should of gotten battery voltage there as well. Other than that all powers and grounds are good and communication wires are good. So the lack of communication has to be a faulty EPS module or the scan tool is not compatible.
The EPS module is not communicating with the car, that is why your not getting a DIC warning. I recommend taking the vehicle back to the dealer. Its now under warranty since they installed a new part. All you have to tell them is there new module will not communicate with the car or a scan tool.