98 conv. battery drain again
Thread Starter
7th Gear
Joined: Sep 2009
Posts: 7
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98 conv. battery drain again
I took my 98 conv. out of winter storage and the battery was slightly discharged so I charged it up and used it for a day with no problems.The next day the battery was completely discharged so I charged it up again and noticed that the DIC and instrument panel dimmer switch are staying illuminated when the car is shut off and parked (but not at full brightness-they get brighter when I switch the headlights on).I left the fully charged battery disconnected overnite as a couple of people recommended and this seemed to work after a couple of trys and it was good for a day but now the problem is back again.I started pulling fuses and found that fuse 25 body control module-ignition1,instrument panel control will put those lights out.Does this need to go to the Chev. dealer to have the BCM reprogrammed?Replaced?Could it be a bad dimmer switch?Thanks alot for any suggestions.
Tech Contributor
Joined: Jan 2007
Posts: 19,533
Likes: 1,196
From: Dyer, IN
I took my 98 conv. out of winter storage and the battery was slightly discharged so I charged it up and used it for a day with no problems.The next day the battery was completely discharged so I charged it up again and noticed that the DIC and instrument panel dimmer switch are staying illuminated when the car is shut off and parked (but not at full brightness-they get brighter when I switch the headlights on).I left the fully charged battery disconnected overnite as a couple of people recommended and this seemed to work after a couple of trys and it was good for a day but now the problem is back again.I started pulling fuses and found that fuse 25 body control module-ignition1,instrument panel control will put those lights out.Does this need to go to the Chev. dealer to have the BCM reprogrammed?Replaced?Could it be a bad dimmer switch?Thanks alot for any suggestions.
Thread Starter
7th Gear
Joined: Sep 2009
Posts: 7
Likes: 0
Tech Contributor
Joined: Jan 2007
Posts: 19,533
Likes: 1,196
From: Dyer, IN
What is the voltage at the battery?
http://forums.corvetteforum.com/1567522286-post590.html
Last edited by lucky131969; Mar 26, 2011 at 06:03 PM.
Thread Starter
7th Gear
Joined: Sep 2009
Posts: 7
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That fuse supplies battery voltage to the IPC and BCM. It does not sound like you let the BCM enter sleep mode, and not using a meter to monitor the current drain, it's pretty much guessing. If you want to isolate the dimmer, pull minifuse #6. Either way, you have to allow time for the BCM to sleep, and monitor the meter.
What is the voltage at the battery?
http://forums.corvetteforum.com/1567522286-post590.html
What is the voltage at the battery?
http://forums.corvetteforum.com/1567522286-post590.html
