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00 montana door locks not working


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y2msu 
Member - Posts: 1
Member spacespace
Joined: December 09, 2003
Location: United States
Posted: December 09, 2003 at 7:37 AM / IP Logged  

this is a tricky one..  about 6 months ago the SWITCH on the driver side door to unlock the doors stop functioning, but the lock position still worked.  the pasanger side unlock worked fine as well as the factoy remote (fob).  at that time i took out the switch and manually contacted the common and the unlock wires and nothing hapened although i did have a voltage reading between the two (12v).  then about a month ago the passenger side stoped working. 

so, i do not have a broken or shorted wire or i would not get a 12v reading between the common and unlock position00 montana door locks not working -- posted image., and the survo's and the associated logic that controls the locks functions fine using the remote fob.  so it apears to be a failed relay or whatever it is that accepts the input from the unlock button.  any ideas including the location of this control system would be greatly appreciated.

everything is stock, no added electronics at all, 2000 pontiac montana, same as the chevy venture, not the old body style.

thanks for your help

sparkie 
Platinum - Posts: 2,061
Platinum spacespace
Joined: November 06, 2003
Location: Canada
Posted: December 09, 2003 at 6:27 PM / IP Logged  
All your door lock/unlock functions are conatained within the body control module located above the passenger's kick panel. The lock wire is light blue and the unlock wire is white. These wires only work from the switches in the doors. Try checking the continuity of these wires from the switches to the control module. Some older vans had problems with the wiring harness under the front seat carpet getting pinched or cut.
sparky
ck auto 
Copper - Posts: 257
Copper spacespace
Joined: September 20, 2003
Location: Canada
Posted: December 09, 2003 at 9:31 PM / IP Logged  

hi i have a 99 transport that locks from drivers but won't unlock it unlocks from passeneger but won't lock don't know why haven't looked further have rs with keyless so  don't us switches .i think it is the switch thoiugh they are pron to failing the pass window wouldn't roll up awhile ago real nice it was      -30 when this happenend took van apart tested and cleaned switch and it worked again i think the whole switch assembly is going bad.

good luck
kirk

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