Originally Posted by Roadkill
Does anyone have the service manual for a 2014/2015 who can tell me if there is a separate antenna for the cellular datalink? I want to disable the cellular datalink antenna (leaving FM/SXM radio and GPS reception intact) and then downgrade to the previous version of uConnect that worked fine.
I've been lurking around for a long time but never really had something I thought significant to share until now. I think I can help…
Yes, the CDMA radio has a unique antenna. And it can be disconnected without compromising the satellite and terrestrial entertainment radios. That's good news.
Satellite-delivered services, like TravelLink, are not affected if the CDMA radio is disconnected. More good news.
Not-so-good news: That radio knows when it doesn't have an antenna and posts a nag screen to have the "vehicle phone serviced". Although the screen can be dismissed or will time-out after a few seconds, it's still a nuisance and will occur each time Uconnect initializes. The "no service" indicator on the rearview mirror is also lit.
Next step is to see if there's DC power on that port to help to decide if I can terminate the antenna port with a dummy load to appease the radio, so I'll be shopping for connectors for a little while - maybe a trip to the junkyard - and hope to offer some more findings before too long.
I'm also curious about just where this antenna is…..sharkfin? dashboard? Perhaps minor details, but if it's in the dash it might also be tamed with a shield……tinfoil hat, anyone?
Anyway, I hope this helps.
In the meantime, here's what I know, for others who also might want to pursue the air gap:
(Connections in the back of the Uconnect head)
White - am/fm terrestrial radio
Green - for sat + nav radio
Pink - for sat radio only
Red - CDMA radio
There is another White connector body, larger and away from the antenna cables, that connects to the USB hub.
CDMA connected… (sorry 'bout the glare)
CDMA disconnected, TravelLink lives!