RFA Serial Data Buss?
Thread Starter
Race Director
Joined: May 2012
Posts: 15,752
Likes: 3,267
From: Phoenix area, AZ
RFA Serial Data Buss?
So I would not continue to butt into another's thread I am starting this one to get some clarification on the following response to my problem of the BO RFA throwing 1016, 1064, and 1096 codes since I bought my car last year:
I doubt that the codes are from the aftermarket FOB. U1016 says the RFA is unable to communicate to the PCM, U1064 is RFA unable to communicate to BCM and U1096 is RFA unable to communicate to IPC. Most likely a Serial Data Buss issue at the RFA. But I could be wrong.
What and where is the Serial Data buss and how do I fix it, or test to see if this is indeed the cause of these codes coming up constantly? Could this possibly be caused by poor grounds?
I doubt that the codes are from the aftermarket FOB. U1016 says the RFA is unable to communicate to the PCM, U1064 is RFA unable to communicate to BCM and U1096 is RFA unable to communicate to IPC. Most likely a Serial Data Buss issue at the RFA. But I could be wrong.
What and where is the Serial Data buss and how do I fix it, or test to see if this is indeed the cause of these codes coming up constantly? Could this possibly be caused by poor grounds?
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
I would not think it is a FOB issue since the TPMS uses the RFA also. Look at the RFA and make sure the connection there is good. There is a ground for that also but not at home now with the FSM to help ID the location. The RFA is behind the driver in the trunk.
Just saw that 8VETTE7 made a post while I was responding. His info should get you going for now.
Just saw that 8VETTE7 made a post while I was responding. His info should get you going for now.
Last edited by dadaroo; Sep 20, 2013 at 12:50 PM.
Thread Starter
Race Director
Joined: May 2012
Posts: 15,752
Likes: 3,267
From: Phoenix area, AZ
There is a presence of the Serial Data Buss at every sensor in the car.
The sensors communicate to the BCM, PCM, IPC etc by encoding messages on the "buss". In the passenger footwell is a pair of connectors that "star" out the buss to various sensors. Courtsey of Bill Curlee here are a couple pics of those connector(s):
Courtsey of that same gentleman here is a wiring diagram that goes along with the above connector:
Could your problem be a "ground issue"? Certainly could. Ground would most likely be for the RFA.
Here is some ground info I have collected over the years:
http://forums.corvetteforum.com/c5-t...locations.html
http://forums.corvetteforum.com/c5-t...tion-long.html Post #1
The sensors communicate to the BCM, PCM, IPC etc by encoding messages on the "buss". In the passenger footwell is a pair of connectors that "star" out the buss to various sensors. Courtsey of Bill Curlee here are a couple pics of those connector(s):
Courtsey of that same gentleman here is a wiring diagram that goes along with the above connector:
Could your problem be a "ground issue"? Certainly could. Ground would most likely be for the RFA.
Here is some ground info I have collected over the years:
http://forums.corvetteforum.com/c5-t...locations.html
http://forums.corvetteforum.com/c5-t...tion-long.html Post #1
It looks like I have some work to do. Is the ground that is showing in the center of the rear hatch area in the large storage area? That one is going to be a problem for me as I have a custom-built subwoofer enclosure there.
Last edited by Corvette_Ed; Sep 20, 2013 at 12:58 PM.
Thread Starter
Race Director
Joined: May 2012
Posts: 15,752
Likes: 3,267
From: Phoenix area, AZ
I would not think it is a FOB issue since the TPMS uses the RFA also. Look at the RFA and make sure the connection there is good. There is a ground for that also but not at home now with the FSM to help ID the location. The RFA is behind the driver in the trunk.
Just saw that 8VETTE7 made a post while I was responding. His info should get you going for now.
Just saw that 8VETTE7 made a post while I was responding. His info should get you going for now.
Thread Starter
Race Director
Joined: May 2012
Posts: 15,752
Likes: 3,267
From: Phoenix area, AZ
I'll dig into this next week after the rain lets up. Those three codes are the only ones that pop up on a regular basis and it would be nice to get rid of them.
Last edited by Corvette_Ed; Sep 20, 2013 at 04:55 PM.
Thread Starter
Race Director
Joined: May 2012
Posts: 15,752
Likes: 3,267
From: Phoenix area, AZ
I get what you're saying, but I've never called that area a trunk as it does not have a trunk lid, it has a hatch. Thus, that area has always been called the "hatch area" for every hatchback car I've owned and by anyone else that I've ever heard refer to that area. You're the first I've ever seen who calls it a trunk.
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