BCM power drain
02-11-2005, 07:11 PM
#1
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Location: palatine, il
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BCM power drain
Well my car feels like draining its own battery in about 5-6 days. I have checked with the negative off with a multimeter and there is a 150 Ma drain 20-30 of which seems to go away if I unhook my amplifiers. (going to have to check that wiring becuase it isnt the amps.)
Another 100 Ma is the BCM. I have basically pulled almost all interior fuses with no drop. This is the big kahuna on the drain and it seems to be pulling about double to triple what is should. I am looking all around in my Haynes Manual but cant seem to find a decent wiring diagram. I mean what else could the BCM be running if alll the interior fuses are pulled..
Also where in gods name is the hood switch. I believe I have an SE and I have a keyless FOB but I look in the engine bay and cant seem to find it. I looked on the drivers side and I am not finding it. Sorry to rush this but I am only home this weekend to fix it due to going to school. Any ideas are welcome or maybe someone with a FSM can show me wth the BCM is hooked to really.
Another 100 Ma is the BCM. I have basically pulled almost all interior fuses with no drop. This is the big kahuna on the drain and it seems to be pulling about double to triple what is should. I am looking all around in my Haynes Manual but cant seem to find a decent wiring diagram. I mean what else could the BCM be running if alll the interior fuses are pulled..
Also where in gods name is the hood switch. I believe I have an SE and I have a keyless FOB but I look in the engine bay and cant seem to find it. I looked on the drivers side and I am not finding it. Sorry to rush this but I am only home this weekend to fix it due to going to school. Any ideas are welcome or maybe someone with a FSM can show me wth the BCM is hooked to really.
02-11-2005, 08:30 PM
#2
Senior Member
Join Date: May 2004
Posts: 416
the bcm basically contorls everything thats not engine related, alarm, memories for stereo,auto climate, interior/exterior lighting, door triggers etc. a .1amp draw is a biig draw, my guess is ther is a short somewhere or a sticking relay. have you checked every thing in the car to make sure it works properly? trunk light, glove compartment light, any aftermarket accesories, led mods etc.
02-12-2005, 02:06 AM
#4
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Join Date: Feb 2001
Location: palatine, il
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fixed my problem.. stupid previous owner removed the intake assembly and in the process took out the hood switch. I found it later dangling in the midst of a bunch of other wires. Ziptied it shut for now and it seems to be doing the trick as far as dropping the BCM amperage. Still have to figure out why my one amplifier is pulling 40 ma but with the BCM gone the car should at least last 7 days like I need it to. Gracias to the .org for this. Searched a bunch and found some great info.
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