Thread: Power drain

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?

Originally Posted by BillBoost37

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.

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?

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.

It also could take quite some time for all the modules and the pcm to go to sleep.

And pull the key out of the ignition, the cats system will keep a draw going.

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