RJ_RS_SS_350

Yes, that's the one, powers the BCM.

Panelvanman

The maxi-fuse is all good. The bcm has power. I double checked it. I’m really at a loss here.

Cat Man HHR

You say fuses are all good.
Can you pull any codes from the ECM ?
What is the available voltage of the battery you put it in the car ?
Is it over 12.4 volts ?

Panelvanman

Both batteries I’ve tried in the car are good. Both have 12.5 volts and I charged the one that came in the car overnight just to confirm it was good. I’m not getting any codes because the scanner won’t talk to the car. My scanner says the key needs to be on. Even though the key is on when I scan it.

donbrew

Check for a signal to the run and start relays.

Oldblue

That wire must have fried the BCM

Panelvanman

There is no signal to the run or start relays. There is no signal to any of the relays in the underhood fuse box. I’m not getting power to those fuses either. But I do have power at the post under the red cover.

Panelvanman

Is it possible that the underhood fuse box is dead entirely? And would a used one be useable? I have a 2009 parts car.

Oldblue

Have you tried the current sensor from the parts car

Panelvanman

I have not yet tried that. I’ll try that first.