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1997 Dodge Grand Caravan door lock system

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Member - Posts: 4
Member spacespace
Joined: December 20, 2005
Location: United States
Posted: December 24, 2005 at 1:36 PM / IP Logged  
The door locks on my van are a single wire and I cannot get the door locks to both work.  I can get it to either lock or unlock but that is all.  Any comments are appreciated.  Thank you for your interest and Happy Holidays.
Platinum - Posts: 3,464
Platinum spaceThis member consistently provides reliable informationspace
Joined: February 07, 2004
Location: Saskatchewan, Canada
Posted: December 24, 2005 at 1:39 PM / IP Logged  
what values of resistors did you use?
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Classic Car Audio
since 1979
Mike M2 
Platinum - Posts: 2,654
Platinum spacespace
Joined: June 29, 2005
Location: United States
Posted: December 24, 2005 at 6:42 PM / IP Logged  
There's an easier way. There are 3 relays on the front of the BCM, one for lock, one for unlock drivers, one for unlock the other doors. Pull the relays and tap a wire to pole 86, this will give you a straight negative pulse needed without the resistors even needed. It even gives you an easy way to get 2 stage unlock....
Mike M2
Tech Manager
CS Dealer Services
Member - Posts: 4
Member spacespace
Joined: December 11, 2005
Location: Canada
Posted: December 25, 2005 at 12:37 AM / IP Logged  

I had the similar problem before, using a 665 Ohm for unlocking and 4020 Ohm for locking, the factory default setting short pulse .9 ms from the BullDog Deluxe 500 Remote starter was only long enough to lock, but not long enough to trigger the unlocking, eventhough it was long enough to trigger an disarming signal successfully.

I reprogramed it to send a longer pulse 3.5 ms, then it unlockingall the doors.

If you have not attached any resistors to it, Mike M2 suggestion is the best way to go.


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