kb0nly
Full Access Member
Ok here is the deal, my son owns a 05 Liberty Sport, and one day he got in to drive home from school and the Odometer display keeps going from the mileage to Door... His can't tell you which door, so it just says Door and thats it.
I did all the usual, WD-40 in the latches, worked the doors open and closed about 40 times, slammed em until i about broke stuff cause we were getting fed up with it. Nothing helped.
Disconnected the battery overnight, didn't help.
Went to the service manual it says that when the door is closed the switch presents an Open circuit, when the door is open its a Closed circuit. And it just closes that switch to ground when the door is open. So i figured thats easy enough to troubleshoot which door it is, just unplug one door latch/lock actuator module at a time until the door message goes away right? Wrong...
Tore apart the drivers side door, unplugged it, started jeep, still stuck on Door. Did the same thing with each door one door at a time restarting the Jeep each time to cycle the key and hopefully reset whatever is going on, still no luck.
I looked at the wiring between the door and the body on every door i don't see any issues. And my though is since its an open circuit when closed then a broken wire wouldn't cause this, only a wire shorted to ground would cause it. So i checked every wiring passthrough point, painstakingly went over every wiring harness i could access, removing interior trim panels etc, i can't find any wiring issues.
So my next thought is it must be the BCM, because before the Door message issue he was having an issue where his dome lights would dim down but not shut off after closing the doors. So i checked all the grounds near the hood release where the BCM and Power Junction Block all ground to, took them off one by one, a little scotch brite to shine them up and the surface they were against, reinstalled them, checked for continuity from each of them to the battery negative post and everything looks great, less than 1 ohm resistance from the battery to those points, can't ask for much better then that.
I checked all the connectors on the back of the JBM, removed them, made sure there was no corrosion or issues and replaced. I took apart the large body wiring connector at the floor by the hood cable since thats an area that can get wet from snow on your boots etc, that looked like new.
I went over every dang inch of this vehicle and i can't find any reason for this. So am i just left with a bad BCM??
If so he's screwed, cause i tried for two hours to get the BCM out of this thing, followed the factory manual to the letter, but the JBM will not come out of there, the only way i can see its possible is to remove the brake light switch which your not supposed to do, and possibly the steering column. Otherwise a sawzall and chop off the lower part of the dash to allow it to come down and out. Seriously there is not enough room to turn it, pull it, push it, nothing. It won't do anything more then wiggle around about a half inch in all directions. So i don't see how you remove the JBM. I was hoping to get the BCM in the window of where the fuses are to remove it and sneak it out off the JBM but no go, there is four screws holding the BCM to the JBM and i can only get the two rearward screws out, the front two are still way up in the dash no matter how i position it. I nearly grabbed a sawzall and MADE room.
So any suggestions, experience with this DOOR message, *********** it, gas to light the vehicle on fire or what?
Currently he can't really do much with the vehicle and hes bummed beyond belief because he paid for this vehicle himself. The dome lights won't go off when your driving, they will time out after you remove the key and lock it though, takes like ten minutes, the doors don't auto lock because it thinks one is open, and if you lock the thing it thinks someone is trying to break in and the lights are on and such. Its just an electrical mess because of the DOOR status.
I did all the usual, WD-40 in the latches, worked the doors open and closed about 40 times, slammed em until i about broke stuff cause we were getting fed up with it. Nothing helped.
Disconnected the battery overnight, didn't help.
Went to the service manual it says that when the door is closed the switch presents an Open circuit, when the door is open its a Closed circuit. And it just closes that switch to ground when the door is open. So i figured thats easy enough to troubleshoot which door it is, just unplug one door latch/lock actuator module at a time until the door message goes away right? Wrong...
Tore apart the drivers side door, unplugged it, started jeep, still stuck on Door. Did the same thing with each door one door at a time restarting the Jeep each time to cycle the key and hopefully reset whatever is going on, still no luck.
I looked at the wiring between the door and the body on every door i don't see any issues. And my though is since its an open circuit when closed then a broken wire wouldn't cause this, only a wire shorted to ground would cause it. So i checked every wiring passthrough point, painstakingly went over every wiring harness i could access, removing interior trim panels etc, i can't find any wiring issues.
So my next thought is it must be the BCM, because before the Door message issue he was having an issue where his dome lights would dim down but not shut off after closing the doors. So i checked all the grounds near the hood release where the BCM and Power Junction Block all ground to, took them off one by one, a little scotch brite to shine them up and the surface they were against, reinstalled them, checked for continuity from each of them to the battery negative post and everything looks great, less than 1 ohm resistance from the battery to those points, can't ask for much better then that.
I checked all the connectors on the back of the JBM, removed them, made sure there was no corrosion or issues and replaced. I took apart the large body wiring connector at the floor by the hood cable since thats an area that can get wet from snow on your boots etc, that looked like new.
I went over every dang inch of this vehicle and i can't find any reason for this. So am i just left with a bad BCM??
If so he's screwed, cause i tried for two hours to get the BCM out of this thing, followed the factory manual to the letter, but the JBM will not come out of there, the only way i can see its possible is to remove the brake light switch which your not supposed to do, and possibly the steering column. Otherwise a sawzall and chop off the lower part of the dash to allow it to come down and out. Seriously there is not enough room to turn it, pull it, push it, nothing. It won't do anything more then wiggle around about a half inch in all directions. So i don't see how you remove the JBM. I was hoping to get the BCM in the window of where the fuses are to remove it and sneak it out off the JBM but no go, there is four screws holding the BCM to the JBM and i can only get the two rearward screws out, the front two are still way up in the dash no matter how i position it. I nearly grabbed a sawzall and MADE room.
So any suggestions, experience with this DOOR message, *********** it, gas to light the vehicle on fire or what?
Currently he can't really do much with the vehicle and hes bummed beyond belief because he paid for this vehicle himself. The dome lights won't go off when your driving, they will time out after you remove the key and lock it though, takes like ten minutes, the doors don't auto lock because it thinks one is open, and if you lock the thing it thinks someone is trying to break in and the lights are on and such. Its just an electrical mess because of the DOOR status.