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2002 Eldordo ETC Collector's Edition with Aux Input
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106 Posts
Discussion Starter #1
So recent good weather has had the Eldo out at a time when it wouldn't be, ordinarily. I diagnosed a blend door problem, hot on one side and cold on the other, based on my readings here. And when I ran the DTCs I found B1341 "Air Mix Door Two Movement Fault" which I thought validated my diagnosis. But what really got me was everything else that came up.

P0622 Generator Field "F" Control Circuit Malfunction
B1552 Keep Alive Memory (KAM) Error
B1327 Device Power Circuit Low
B1552 BCM EPROM Checksum Error
B1983 Device Power Circuit Low
B3109 I found no definition
U1064 Loss of Communication with DIM
B2119 Lumbar Forward/Aft Sensor Failed
B2120 Lumbar Up/Down Sensor Failed
B0856 Battery 2 Out of Range
B1983 Device Power Circuit Low
B2148 Right Front Mirror Vertical Position Sensor Circuit Low

So how much trouble am I in? Except for the rear view mirror not dropping when I am in reverse (I thought it used to do that?) I didn't think I had any problems. Am I now a menace to society? Should I expect wheels and tires to fly off at speed? How can my battery 2 be out of range, I only know of the one under the hood?

Help, please.
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
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86,779 Posts
How is your battery voltage?
Have you pulled battery power lately?
Are all those codes current or history?
 

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2011 DTS Premium w/1SD | 1999 Deville Base (RIP @179K Miles)
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403 Posts
What it seems like is at some point, part of the wiring that controls the alternator messed up. This caused the alternator to give too little power to the cars electrical systems and made it trigger these low voltage codes.
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
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19,249 Posts
So recent good weather has had the Eldo out at a time when it wouldn't be, ordinarily. I diagnosed a blend door problem, hot on one side and cold on the other, based on my readings here. And when I ran the DTCs I found B1341 "Air Mix Door Two Movement Fault" which I thought validated my diagnosis. But what really got me was everything else that came up.

P0622 Generator Field "F" Control Circuit Malfunction
B1552 Keep Alive Memory (KAM) Error
B1327 Device Power Circuit Low
B1552 BCM EPROM Checksum Error
B1983 Device Power Circuit Low
B3109 I found no definition
U1064 Loss of Communication with DIM
B2119 Lumbar Forward/Aft Sensor Failed
B2120 Lumbar Up/Down Sensor Failed
B0856 Battery 2 Out of Range
B1983 Device Power Circuit Low
B2148 Right Front Mirror Vertical Position Sensor Circuit Low

So how much trouble am I in? Except for the rear view mirror not dropping when I am in reverse (I thought it used to do that?) I didn't think I had any problems. Am I now a menace to society? Should I expect wheels and tires to fly off at speed? How can my battery 2 be out of range, I only know of the one under the hood?

Help, please.
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I found B1341 "Air Mix Door Two Movement Fault" which I thought validated my diagnosis
that would be a failed passenger-side mix door -


B3109 I found no definition

this is the best codes/definitions list -
http://www.cadillacfaq.com/faq/answers/dtccode.html

B3109 - 3 consecutive low battery signals from the same programmed transmitter

the rear view mirror not dropping when I am in reverse
(I thought it used to do that?)

that is part of the "driver personalization" -

unless you do a LOT of parallel parking -
it's just a great way to wear out the adjusting motor -

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have the battery load-tested -
and have the alternator output tested -

-----------------------------
 

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2002 Eldordo ETC Collector's Edition with Aux Input
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106 Posts
Discussion Starter #5
Just got back from a drive and the battery was at 13.3, I know I have seen it at 14.4 as late as last week.

Regarding the alt, it was changed out at the Cad dealer probably three years ago, but I will check it and the battery (just over two years old).

Thank you.

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•B3109 - 3 consecutive low battery signals from the same programmed transmitter

So this is my remote? It needs a new battery?
 

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Registered
2002 Eldordo ETC Collector's Edition with Aux Input
Joined
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106 Posts
Discussion Starter #6
So both days this weekend were in the 60s (unheard of here) so it was yard work, no wrench work.

I just took a short drive and key on the voltage was 12.0. start it went to 14.4, lights on and driving it went to 14.3, then 14.2, then 14.0 and I pulled back in to the driveway at 13.8. And it turns out the battery is three years old, not two...
 
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