I just hooked up my AVIC-D3 and a SIR-PNR2 I bought off Ebay (used). I am able to go to the Sirius display on the head unit and the readout will show the name of the station I'm on but no song info and no audio. I called Sirius and they said the unit is getting their signal and it's activated properly. Could the PNR2 I got be broken or is this a simple fix?