Drivers side door lock not working -
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Unread 08-25-2012, 01:08 AM   #1
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1999 XJ Cherokee 
Join Date: Aug 2012
Location: cedar hills, ut
Posts: 2
Drivers side door lock not working

Hey, I'm new here. Grateful for the help that this site has already given me.

I have 2 problems that have been a real pain to figure out. I have a 99 xj sport 6 cylinder 4.0 liter.

1. when i press unlock from the drivers door nothing happens.

when i press lock from the drivers door, every door but the drivers door locks. From the passenger side i can lock and unlock every door except for the drivers door. no problems with any of the windows or speakers everything else works.

I have replaced the drivers door actuator (wasn't the issue), and the window/lock switch panel on the drivers door(didn't help either), which leaves me to believe that the problem must be with the wiring.

2. Like i said above, i cant get the drivers door lock actuator to lock or unlock electronically. (i can manually lock or unlock it.)

I know others have had problems with door locks for the 99 cherokee, and this one seems like it should be a pretty easy fix. Im just not sure where to start, and ive been trying to read into the subject enough to fix it myself without paying someone a lot of money to do it for me. Any help with getting the button on the panel to unlock all the doors, and make the actuator do what its supposed to for the drivers door would be awesome. Thanks

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Unread 08-25-2012, 06:50 AM   #2
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2000 XJ Cherokee 
Join Date: Apr 2002
Location: out in the garage - Minneapolis, Minnesota
Posts: 21,624
Buy a $6-18 volts ohms multi meter at the hardware store, home improvement store or the WalMart. Test the lock wires in your Jeep for continuity, and for 12 volts. Start in the driver’s door, and then move to the passenger door. Check the door lock switch, the door lock actuator and inside any wire plugs. Check the door wire plug just inside the jeep by the door hinges. You may need a helper to push the buttons for you. You may need to replace the passenger side lock switch.

Broken wires, chafed insulation, and failed wire splices in the door wire harness are common.

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Unread 08-25-2012, 03:15 PM   #3
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1999 XJ Cherokee 
Join Date: Aug 2012
Location: cedar hills, ut
Posts: 2

I checked voltage to make sure it was getting power to the wire harness at the kick panel, it was. I checked the ohms on all of the connectors and everything checked out. there must have been a pinch somewhere that i couldnt see. Ran two new wires, spliced them in just before the connectors and boom, power to the actuator and the door unlock. Thanks for the advise! Saturday project complete.
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99 , cherokee , door lock , wiring
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