Parasitic draw

I have a 2009 Tundra, 4WHD, 5.7L, w/tow package.

I have a parasitic draw of 60-70ma in the ECU B1 circuit which is fused 7.5A in the under hood fuse box.

If I pull that fuse, the draw drops to under 10ma. If I put the fuse back in, the draw remains under 10 ma.

Then when the truck is started, powered down and allowed to go back to sleep, (5 min.), the same draw of 60-70ma is present. Once again, if the ECU B1 fuse is pulled and reinstalled, the draw is under 10ma.

Anybody been there??

Thanks for any help you may have. Tim

 

Any chance you have an aftermarket remote starter?

 

Is the cargo light switch on, not in the door or off mode?

Any interior lights staying on? Any not lighting up at all?

Anything plugged in the 12v power port / cigarette lighter?

Anything plugged in the OBD2 port?

 

I’m sorry for the delayed response. Too many things going on at once.

Thank you for reaching out. As it turns out, that particular circuit takes about two hours to completely power down. I didn’t realize that initially since most circuits power down in 5 to 10 minutes. So my trucks parasitic draw is in the normal range now.