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2000 Jeep Grand Cherokee BCM

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4 years 8 months ago #33596 by Dan _in_MN
2000 Jeep Grand Cherokee BCM was created by Dan _in_MN
I'm seeing low battery voltage in the BCM.
Anyone out there with a scanner and a WJ able to check the voltage in the BCM? I'm fairly certain I should be seeing true battery voltage. I'm seeing around 8-11vdc. See picture.

Thanks!

I'm searching for something that is draining the battery if not driven in a week or so.
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4 years 8 months ago #33600 by Cheryl
Replied by Cheryl on topic 2000 Jeep Grand Cherokee BCM
Did you perform a parasitic draw test?? Either pulling fuses on at a time til the draw goes away or measure voltage drop across the fuses one at a time

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4 years 8 months ago #33601 by Dan _in_MN
Replied by Dan _in_MN on topic 2000 Jeep Grand Cherokee BCM battery voltage?
Thank you for the reply.

Yes, I've tried voltage drop testing and pulling fuses keeping track of the amp draw on the battery. I'm thinking that the BCM may be waking up and draining the battery.

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4 years 8 months ago #33605 by Cheryl
Replied by Cheryl on topic 2000 Jeep Grand Cherokee BCM battery voltage?
Make sure it’s the bcm band not one of the things it controls

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