I'm away from home today but I can check what that tells us this evening (mountain time)
I notice in that image there is a 20 amp fuse in there. It's supposed to be a 10 amp. Was there a 10 amp in there and it blew out?
SOLVED! 2005 Envoy 4.2L XUV doesn't want to turn off
- Thread starter Moms_Spaghetti
- Start date
I'm away from home today but I can check what that tells us this evening (mountain time)
I notice in that image there is a 20 amp fuse in there. It's supposed to be a 10 amp. Was there a 10 amp in there and it blew out?
Try the test again with the key in the run position. If both sides power up then we can assume the bottom one in the picture is towards the ignition switch, right?
Another thing to try is to keep your light on the top connection of fusee 22 socket and pull other fuses one at a time and see if the test light goes out. That power getting into the fuse 22 socket from the wrong way has to be coming from somewhere and pulling other fuses just might give a clue about where the backfeed is coming from. If nothing kills the test light pulling fuses from the front fuseblock try the rear fuseblock. If no fuse removal makes the test light go out then it will have to be assumed that the errant power source is hot all the time.
pull the top of the fuse block and have a looky to see what there is hiding underneath the "clam".
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After you pointed it out I looked through them and wow there are a good bit mismatched in the under hood fuse box listed below. The fuse box in the back seat was even more upsetting! Next time I go out I will pick up the correct fuses.
Fuse 5 (5A : Supposed to be 10A)
Fuse 11 (25A : Supposed to be 15A)
Fuse 22 (20A : Supposed to be 10A)
Fuse 54 (30A : Supposed to be 15A)
So I checked and yes the bottom of Fuse 22 came on with the key in the on position. So i turned the key to the off position and pulled every fuse until the top lead on the fuse turned off. It finally turned off after I removed Fuse 46 (Auxiliary power 1) in the under seat fuse box.
So I put all the fuses back and tried to start without fuse 46 but nothing happened. I put it back in and started it up then removed the fuse with the key in the off position and the engine cut off!
I did it one more time and pulled Fuse 46 with the key sill in the run posistion, and then turned the key to the off position and the car cut off like it normally should!
So this tells us where the phantom power is coming from, good work!
When I get home I'll look over the wiring diagrams and see if there is a likely place for this crossover backfeed to have happend. Maybe @Mooseman has some information on where the wiring harnesses go and where these 2 circuits co-exist?
So lets clarify something here.... With all fuses in place EXCEPT aux power fuse #46 the truck won't start?? But once fuse #46 is put back the truck starts and continues to run if fuse #46 is pulled out?
Yes that is correct! All the dash lights lights come on like normal but when I move the key to the start position all i get is silence!
I believe this is the area fuse #46 covers?
EDIT: My truck dosen't have Fuse#15 its empty
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I only have a standard diagram for 2006 but essentially yes,,, should power only the auxillary power receptacles. It might be fairly easy to inspect those for aftermarket added wires?
It is unexpected that the truck not start without fuse 46 in. A curious plot twist for sure. Will need to think on that one.
GOOD NEWS EVERYONE!!!
After a trip to Auto zone and a bunch of new fuses It Starts & Turns off without Fuse #46!!!
I am not sure which was the problem fuse but I am thankful!
A new problem emerged and I got a code for Multiple missfires. I feel like this could be the result of turning off the car by pulling the fuel pump for the last week. So im going to put 1/2 a can of Seafoam in it tomorrow and hope it improves over the week. If not I will be back with another post!
Mooseman
Moderator
But now you won't have power at the aux plugs and possibly the OBD port. When it's running, are you getting power to both legs of fuse 46? If yes, that's your backfeed. Could it be that those added switches tapped into the aux power? Do they still work with the fuse pulled/ignition off? Do they work with the ignition on? I have a feeling that's where things got crossed.
Yeah when its running there is power to both legs of the fuse. None of the accessories work until i turn the key to the on position (this is with the fuse pulled). So everything works fine except the Accessory power outlets. Thinking back it might have shorted out one of the times I was charging my jump kit.
I just hope it shorted somewhere easy to get to!
What "accesories" do not work with the 46 fuse out amd thenkey in the ACCY position? The #46 fuse supplies ONLY the auxillary power outlets, no accesories.
It might be wise to revisit the ignition switch and test the power sequences again now that you know the #46 fuse was backfeeding.
Sorry for the long time since an update! I pulled the dash off where the Aux wires are. It is a complete mess I attached pictures and redrew the wiring diagram to what im seeing.
So from what i can tell they attempted to make it so the Aux plugs turn off when the car is off? I guess they are hot all the time otherwise??
From what I see it appears all the (Orange) wires in to the Aux have been cut except one (C1 or 3 in the diagram) and they are all wrapped around that one. Then another (Black) wire (added later) is wound around those which is connected back to a (pink/red) wire on this plug with the red clip and 7 wires. Also Connected to this (pink/red) wire is a yellow wire that goes back to the radio.
It appears that the (Orange E3) is hot all the time even with Fuse #46 out but that wire is cut & not being used.
With Fuse #46 in place All (Orange wires 1,2,3)are hot with the key in the off position.
During this setup I heard the throttle body cycle when I moved these wires a bit.
(Orange wires 1,2,3) Are still working with Fuse #46 pulled but they are only hot when the key is in the run position. It appears they are getting power from the (Pink/red) wire via the (Black) wire.
In the pictures I unwound one of the (Orange) one side of the (Black) wires
I'm guessing this Short is further back then this? Or is it this Odd black wire?
View attachment 96842
So from what i can tell they attempted to make it so the Aux plugs turn off when the car is off? I guess they are hot all the time otherwise??
From what I see it appears all the (Orange) wires in to the Aux have been cut except one (C1 or 3 in the diagram) and they are all wrapped around that one. Then another (Black) wire (added later) is wound around those which is connected back to a (pink/red) wire on this plug with the red clip and 7 wires. Also Connected to this (pink/red) wire is a yellow wire that goes back to the radio.
It appears that the (Orange E3) is hot all the time even with Fuse #46 out but that wire is cut & not being used.
With Fuse #46 in place All (Orange wires 1,2,3)are hot with the key in the off position.
During this setup I heard the throttle body cycle when I moved these wires a bit.
(Orange wires 1,2,3) Are still working with Fuse #46 pulled but they are only hot when the key is in the run position. It appears they are getting power from the (Pink/red) wire via the (Black) wire.
In the pictures I unwound one of the (Orange) one side of the (Black) wires
I'm guessing this Short is further back then this? Or is it this Odd black wire?
View attachment 96842
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Mooseman
Moderator
That is a mess. There is a much easier way to make the aux plugs switched at the fuse box. However, for now, I'd just return everything back to stock. You should also check under the dash on both sides and under the hood in case there was more of this creative wiring hack job done elsewhere.
Here's a thought. Does the engine stop when you open the door?
Here's a thought. Does the engine stop when you open the door?
Yes!
I am now working up an unrelated issue now (P0300)
So I was able to rewire it back to how it came from the factory. Now with fuse #46 in she turns on and off normally!
Turns out it was the (black) wire that was back feeding the Aux power into where the Yellow wire that powers the radio. It was quite the headache trying to figure this one out!
I really appreciate all of the help y'all were able to give seriously couldn't have done it y'all!
Shes a little rough around the edges but all the way from P.R. here is Gwen!
Not yet but I just ordered 6 new spark plugs and a new coil which should be coming in a week or 2. If that doesn't fix it I will make a new post! How worried should I be about potentially stripping the aluminum head?
Mooseman
Moderator