battery drain
Thread Starter
Intermediate
Joined: Aug 2013
Posts: 25
Likes: 0
Battery drain
Hi Sam,
Got warm again. Hope it stays. So was able to get back to my car. if you remember, few messages ago I told you I pulled all the fuses from the floor box one by one but high amperage never dropped. Now I know why. This time I pulled all the fuses and circuit breakers then I was plugging one by one back in and measuring amperage each time. I found out that there is problem with two circuits – fuse 25 (BCM1 & IPC – have no idea what it is) and 6 (PK T/LP - no idea). Please advise what’s next. If you prefer please call me on 248 933 3959
Got warm again. Hope it stays. So was able to get back to my car. if you remember, few messages ago I told you I pulled all the fuses from the floor box one by one but high amperage never dropped. Now I know why. This time I pulled all the fuses and circuit breakers then I was plugging one by one back in and measuring amperage each time. I found out that there is problem with two circuits – fuse 25 (BCM1 & IPC – have no idea what it is) and 6 (PK T/LP - no idea). Please advise what’s next. If you prefer please call me on 248 933 3959
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Fuse #25 = BCM Logic Power Feed (Powered all the time)
That is what allows the BCM to be in sleep mode. This is what should cause a 17-22 milliamp current draw.
Pull fuse 6 for the Park lights and leave 25 installed. Tell me what the current draw is.
After that, pull 25 and put 6 back in and tell me what the current draw is
That is what allows the BCM to be in sleep mode. This is what should cause a 17-22 milliamp current draw.
Pull fuse 6 for the Park lights and leave 25 installed. Tell me what the current draw is.
After that, pull 25 and put 6 back in and tell me what the current draw is
Thread Starter
Intermediate
Joined: Aug 2013
Posts: 25
Likes: 0
can't get a hold of you
Sam,
for some two months now I keep calling you with now luck. I sent
you amp measurements you requested but since then you haven't visited the thread. Please reply or call me at 248 933 3959
for some two months now I keep calling you with now luck. I sent
you amp measurements you requested but since then you haven't visited the thread. Please reply or call me at 248 933 3959
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Tried to call but it just rang and rang, no voice mail. Not sure why I didn't get your messages. The wife does all that and leaves me a note. Maybe she forgot or somehow it got misplaced.
Anyway, I am going to try and go through everything again and get back up to speed.
Anyway, I am going to try and go through everything again and get back up to speed.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Tried to return your call this morning but no answer. I have reviewed all the Posts. It would seem to me that you have an issue going on in the Multifunction switch or the BCM.
Clarify what you mean by Contour lights. I also assume by Dome you mean the interior mirror lights?
Clarify what you mean by Contour lights. I also assume by Dome you mean the interior mirror lights?
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Good to talk to you again this morning. Here is the info on the MF switch replacement.
https://www.corvetteforum.com/forums...-a-how-to.html
https://www.corvetteforum.com/forums...-a-how-to.html
Thread Starter
Intermediate
Joined: Aug 2013
Posts: 25
Likes: 0
Bcm
good talking with you too
As I told you I was in a process of removing BCM but I stopped to check current drawn after disconnecting BCM. I charged the battery overnight and got zero draw even with multimeter set on 200mA. Both fuses 6 and 25 were in. So now I have a dilemma should I replace the switch. By the way I think you were referring to the switch on the steering column but how about the one on the knee bolster? Or replace the BCM or put all back together and go to a dealer for a computer test. What do you think?
Thanks again for your help
As I told you I was in a process of removing BCM but I stopped to check current drawn after disconnecting BCM. I charged the battery overnight and got zero draw even with multimeter set on 200mA. Both fuses 6 and 25 were in. So now I have a dilemma should I replace the switch. By the way I think you were referring to the switch on the steering column but how about the one on the knee bolster? Or replace the BCM or put all back together and go to a dealer for a computer test. What do you think?
Thanks again for your help