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Power drain

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whatthekrapp

New member
I have an 05 GXP and it's draining the battery every few days. I hooked up a meter between the negative post on the battery and connector and it is constantly drawing 150 milliamps (0.15 on my meter) I pulled every fuse and relay in the box under the hood and in the fuse box on the passenger side with no change, always 0.15 (I had the interior lights fuse pulled). If I disconnect the power lead to the box under the hood the draw does go to 0. Is there something that runs through that box but isn't fused or does anyone have any ideas of what else to check?
 


You said you unhooked the box under the hood, is this the underhood fuse box? If so there must be a fuse or relay that is allowing the power drain within that fuse box.
 
BillBoost37 said:
You said you unhooked the box under the hood, is this the underhood fuse box? If so there must be a fuse or relay that is allowing the power drain within that fuse box.
Click to expand...

I know, that's what I thought but I pulled every fuse and relay in there and not one of them made a difference. Any idea if there is a connection that runs through the fuse box but isn't actually fused?
 
I'm not aware of any wiring that isn't fused in one of the fuse boxes. Unless something was added into either and that should look like it's been added.

How about this.... I believe that there are three big connectors in the back of the underhood fuse box. If you removed one at a time and watched for the draw, you could begin to slim down the possibilities. And someone should have a listing of what is in the connector that ends up with the draw in it. That way we can help you start to pinpoint the issue.
 
Yes, one goes to the body harness, one goes to the engine harness and one goes to the headlight harness. There is also a round plug that catch's the body harness at the end of the engine harness.
 


Alright so pulling the 4 connectors on the back side of the fuse box and found that if either of the gray plugs is connected, I get the amp draw. With those 2 out and the 2 black plugs hooked up, amp draw is 0
 
Sorry to spam the thread but if either of the 50 amp batt 1 or batt 2 fuses are in, I get 150 milliamp draw. I was previously pulling one fuse at a time which is why I never saw a drop
 
Wiring diagram shows two 50 amp fuses labeled/controlling. Please check the fuse location numbers to ensure we are both talking about the same fuses.

Fuse location 27: This fuse feeds the fuse box under dash for these circuits: Door lock/trunk release, power seat, power mirrors, heated seat, turn signal hazards and RAP relay (Retained Accessory Power: operates windows and door locks/radio after you turn off key for ~15min)
Fuse location 56: Secondary air injection pump relay
 
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