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As mentioned previously you should pull the alternator and have it checked at a local auto parts store. The alternator diodes do fail and cause battery drain, you could just unhook the heavy gauge wire at the alternator and repeat the measurement, when it warms up a bit of course.
Ok guys finally warmed up. So this is where I'm at. Car is 3.4amp. sleep mode .230
I didn't unplug PCM in sleep.mode Pulled top plug of PCM first, went from 3.4 to .200. Don't know what this means.
second fuse 24 keeps blowing. One side of the fuse insert reads battery voltage 12.6 and the other side reads 6.5v. Again don't know what this means.
The Fuse 24 is feeding your Bose signal processor and the Power Antenna .
Try to disconnect power antenna first and see if the fuse still blows
The fuse 24 is feeding the antenna motor through the relay
The Fuse 24 is feeding your Bose signal processor and the Power Antenna .
Try to disconnect power antenna first and see if the fuse still blows
The fuse 24 is feeding the antenna motor through the relay
My car doesnt have power ant. Relay is pulled out. But again, how is the load side getting 6.5 volts???
Yes. Where would the 6.5v come from. Thanks for ur help.
But here's the up date. I checked all fuses again and all is good. So i started pulling fuses and somehow 3.5 now after pulling fuse sleep mode is .08 dont get it.
Do i check bcm in sleep mode?? if in sleep mode pull insert pull insert without waiting in between pulls or it doesn't matter if its in sleep mode or not.
It matters, you have to wait about 20 minutes for BCM to enter sleep mode, anything you do during this time will disrupt the car going into sleep mode. .08 or 80 millamps is typically the current you will see and should drop to about 25ma when it enters sleep mode.
It matters, you have to wait about 20 minutes for BCM to enter sleep mode, anything you do during this time will disrupt the car going into sleep mode. .08 or 80 millamps is typically the current you will see and should drop to about 25ma when it enters sleep mode.
Ok ill double check.
I didn't explain myself that well. I was talking about the bcm on how to treble shoot to see if it bad. Do I pull the connection in sleep mode or it doesn't matter. Or pull a connector see what the draw is plug it back in and wait for sleep mode then pull. What im i looking for as far as amp drop.
Last edited by helga203; Feb 27, 2022 at 04:13 PM.
I don't personally know how to troubleshoot the BCM to determine if it's causing the current drain. I would pull the BCM and send it to G7 Computers and have them test it, you have to pay up front, but if there is nothing wrong with the BCM they will refund your money, their on the internet.
It matters, you have to wait about 20 minutes for BCM to enter sleep mode, anything you do during this time will disrupt the car going into sleep mode. .08 or 80 millamps is typically the current you will see and should drop to about 25ma when it enters sleep mode.
Actually, The BCM goes into sleep mode in approx 12 min. If you open your hood and leave it open, the under-hood light will go out after a period of time (approx 12 min) Thats when you will have your least current draw. If the BCM doesn't sense any additional current draw, it can enter sleep mode sooner.
Try to open hood and your passenger door and activate the doorlock like this . Then you can leave the passenger door open as long as you need without interupting the BCM. sleepmope when it appear after 12-15 minutes .
Now you can access both fuseboxes withaout interupting the sleepmode of the BCM
Then measure the voltage across each fuse in passenger footwell and engineroom with your DVOM in mV range .
Measuring voltage drop is much easier and quicker way and you don't interrupt the sleepmode of the BCM like you do when pulling fuses
Try to open hood and your passenger door and activate the doorlock like this . Then you can leave the passenger door open as long as you need without interupting the BCM. sleepmope when it appear after 12-15 minutes .
Now you can access both fuseboxes withaout interupting the sleepmode of the BCM
Then measure the voltage across each fuse in passenger footwell and engineroom with your DVOM in mV range .
Measuring voltage drop is much easier and quicker way and you don't interrupt the sleepmode of the BCM like you do when pulling fuses
Thank you, I ruled out hood fuse box by disconnecting power so it is completely out of the equation. My tips of prongs are bigger than ur, i have to go out and get some needle like tips.
Ok another update. I dont think there is anything esle to check.
Car went in sleep mode .210. I checked all fuses twice and they where all zeros. The last thing i checked was the ECM. Car was in sleep mode again .210. I pulled the top connector first and had no change plugged it back in and pulled the second connector and mv went to .03. and finally the small connector showed .147. Plugged it in and went back to .210.
Thanks for trying guys, but i think this one is a lost cause.
