Automotive Forums .com - the leading automotive community online! Automotive Forums .com - the leading automotive community online!
Automotive Forums .com - the leading automotive community online! 
-
Latest | 0 Rplys
Go Back   Automotive Forums .com Car Chat > Jeep > Liberty
Reply Show Printable Version Show Printable Version | Email this Page Email this Page | Subscription Subscribe to this Thread
 
Thread Tools
Old 01-27-2014, 06:50 PM   #1
1992RamVan
AF Newbie
 
Join Date: Apr 2011
Location: Spartanburg, South Carolina
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Power locks will lock but not unlock

My son has a 2009 Jeep Liberty. The fuse for the power door locks failed and when he replaced it, it sparked, blew and melted some of the plastic around the "slots".

I checked the voltage on the fuse block and found it at 12.47. I put a wire jumper across the fuse receptacle terminals and it did not heat up, then, using either of the front door lock buttons or the key fob, all locks will lock but they will not unlock.

I rigged up way to put a fuse in the melted slot..... 7.5 blew but 15 did not. He bought a new module... $500 but I'm very reluctant to put it in until I find out what blew the fuse.

I have a service manual with wiring diagrams and I tried to put 12 volts on both the unlock and lock wires to the drives/motors at the connector at the Integrated Power Module to see if I could get it to work but nothing.. no lock or unlock.

It's a "reversing" motor so I suspect that supplying 12 volts doesn't work because I also have to switch the ground.

Any thoughts on how I can test the motors or get the unlock function working?
1992RamVan is offline   Reply With Quote
Old 02-02-2014, 03:46 PM   #2
Scotty89
AF Regular
 
Scotty89's Avatar
 
Join Date: Dec 2007
Location: City, Missouri
Posts: 241
Thanks: 1
Thanked 10 Times in 10 Posts
Re: Power locks will lock but not unlock

You might try jumping the locks at the drivers switch itself, and could try disconnecting the battery and measuring resistance from the power wire to ground. The reading should show really high resistance if any if good. I have seen several vehicle that the wires in the drivers door jam will break and depending on where they break and how many does it could be possible that the power wire broke and grounded out and after opening and closing the door could of separated the wire from ground. When I get a vehicle that the door locks and windows doesn't work thats the first place I look.
Scotty89 is offline   Reply With Quote
 
Reply

POST REPLY TO THIS THREAD

Go Back   Automotive Forums .com Car Chat > Jeep > Liberty

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 12:12 AM.

Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
 
 
no new posts