Lmc5
Thread Starter
Burning Brakes
Joined: Nov 2010
Posts: 934
Likes: 44
From: west bloomfield michigan
Lmc5
Getting ready to do the LMC5 module. 1ST. why the brown wire and why is it caped off. after you disconnect the neg. cable from the battery and the install is done do you have to re-program the radio?. the recall has been done on the column, but I thought that the wheel would move freely when the car was turned off, mine locks up when I turn it off. have not had a problem but I do not want to get stuck somewhere. any help would be appreciated. THANK YOU IN ADVANCE GINO.
Drifting
Joined: Feb 2010
Posts: 1,923
Likes: 427
From: Dunedin Florida
I just installed the LMC5. I never had a PULL KEY or SERVICE COLUMN LOCK message before but installed it for peace of mind. As soon as I finished the installation I got the SERVICE COLUMN LOCK message. Went through the troubleshooting instructions and the LMC5 is installed correctly. I checked my yellow top battery that stays on the battery tender all the time and it shows 12.0 on the DIC with the engine off (not sure how accurate that DIC is). With engine running it shows 13.9. Compliance Parts says the service column lock message is likely to the low battery. But I have had batteries below 12.0 and have never seen the message and didnt see it when I pulled the car from the garage to do the LMC5 install. So if Compliance Parts is correct that means the LMC5 makes our already glitchy electronics even worse. I never intended to install a device that makes things worse when voltage gets low. I do have my doubts its the battery voltage doing it though.
Drifting
Joined: Feb 2010
Posts: 1,923
Likes: 427
From: Dunedin Florida
Don't rely on what your battery's voltage is based on what the DIC says with the engine off. Use a multimeter to check it at the battery posts. And if it does show only 12.0 volts on the meter, then your battery is indeed low and is very likely the source of your problem. With the engine running and the DIC showing 13.9 volts, that's about right, but that's not indicating what the battery's voltage is, it's indicating that the charging system is functioning properly.
1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,439
Likes: 2,183
From: Buffalo Texas
Le Mans Master
Joined: Jul 2011
Posts: 7,410
Likes: 958
From: Morristown New Jersey
Oldtimer
Compliance Parts never misses a trick and will stay on the phone with you till you get it right! Call them, they will have an answer for you. They stand behind their product 100%
Team Owner
Joined: Jun 2008
Posts: 29,251
Likes: 176
From: Blessed are the cracked. For they are the ones who let in the light.
St. Jude Donor '08 thru '26
I had to do the brown wire on the last one to get rid of the codes and also make it work correctly.
I do believe it has more to do with a recall being previously performed?
Either way...it sure did the trick where the other failed.
I do believe it has more to do with a recall being previously performed?
Either way...it sure did the trick where the other failed.
Race Director
Joined: Aug 2015
Posts: 12,143
Likes: 4,666
From: SE WI
You have to follow the instructions to the T. Don't skip steps or do any unessary ones. The likelihood that it's operator error is very very high. This is a very good and mature product with a solid track record. I know I checked it thoroughly. The instructions are as good as it gets.
Last edited by Zjoe6; Nov 7, 2016 at 10:44 PM.
Racer
Joined: Aug 2014
Posts: 400
Likes: 28
From: St. Paul (smokey!) MN
I called compliance parts with some questions before installing mine. Turns out there are 2 versions of the BCM. The brown wire mod has no effect on the early ones (which I have), he said not to do it.
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Le Mans Master
Joined: Mar 2004
Posts: 8,700
Likes: 298
From: Ft. Lauderdale Fl
Thats how my problem was solved.(the brown wire mod)
1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,439
Likes: 2,183
From: Buffalo Texas
Drifting
Joined: Feb 2010
Posts: 1,923
Likes: 427
From: Dunedin Florida
Ok I pulled the LMC5 and the Service Column Lock message is gone. No one can dispute it anymore. The LMC5 was the culprit. Itskind of ironic that it caused the very thing it was supposed to prevent.
Drifting
Joined: Feb 2010
Posts: 1,923
Likes: 427
From: Dunedin Florida
Then it is one of the early versions of the LMC5. For a while there were 3 different variation because of the idiosyncrasies of the C5 BCM's. LMC5, LMC5R and 5 wire LMC5 were the variations as I recall. For the past 2 years there has only been the variation that has the capability for the "brown wire mod".
1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,439
Likes: 2,183
From: Buffalo Texas
1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,439
Likes: 2,183
From: Buffalo Texas
Instructor
Joined: Dec 2015
Posts: 111
Likes: 19
From: Peoria AZ
Call Compliance Parts, very helpful. He helped walk me through the issue I was having and ended up doing the brown wire mod. He even waited for me to start it up to make sure I didn't have any issues.