Crazy Electrical Problems

[HVNTER]

How's it goin yall!

I've had my 2006 H3 for about 6 months now, and as of a few days ago, I've had some pretty wild electrical problems out of it. This may be kind of hard to follow but I'll try to explain it the best I can.

Pretty much whats goin on right now is that the H3 dies when I turn my headlights on. When the headlights (or even the Daytime Running Lights) are on, the passlock light shows up on the instrument cluster, and I can't start it. When I turn the headlights OFF, all the dash lights come back on, but the "Brakes Failed", "Stab Sys" and "Brake Fluid Low" messages show up, but it WILL start with all of that goin on.

I just took it for a little cruise a few minutes ago, and it did fine. It idle'd really low when I stopped but I COULD drive it..

I'm really stumped on what it could be. I've thought maybe PCM, BCM, bad Fuel [FONT=inherit !important][FONT=inherit !important]Pump[/FONT][/FONT].. not sure. If anyone has had a similar experience and fixed it let me know.

 

[alrock]

Have you checked the battery, the terminals and the cables? Sounds like a low voltage issue. Weird issues manifest when the truck can't get enough juice. First thing I'd do is get that battery checked. If those are the original terminals, I'd replace them right away as nine years is a long time on those terminals.

Also, I edited your post - please refrain from unnecessary links to other forums.

 

[ponchoV8]

My '09 did something similar; very random DIC lights coming on with the same messages as yours. It would not stall but it needed to cycle the lights for a minutes or so then disappear then I would be able to shift out of Park and move on, otherwise I was stuck staring at dash lights and listening to warning chimes. Most definitely check the battery and battery cables and connections first. I replaced my battery terminals with more robust aftermarket units. I also went to every external ground and cleaned the ground connections from the engine block to the frame. The problem would disappear for a bit then return. Finally took it in and the shop diagnosed it as both the BCM and EBCM.....$1300 later and all is well.

 

[cgalpha08]

Most likely your battery terminals or a bad battery. Causes havoc on an H3's electrical system when they aren't right.