Does anyone have an answer to this? I am having the same problem, except I can't ping the FirePOWER module from my PC.
I have the internal g1/2 address of 192.168.1.1, the FP Module IP is 192.168.1.254
I am connected like this:
http://www.cisco.com/c/dam/en/us/td/i/400001-500000/410001-420000/415001-416000/415358.eps/_jcr_content/renditions/415358.jpg