ford truck and SUV lock problems
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=36170
Printed Date: May 20, 2024 at 6:16 AM
Topic: ford truck and SUV lock problems
Posted By: mobile1
Subject: ford truck and SUV lock problems
Date Posted: July 26, 2004 at 12:03 AM
Within the last 2 months we've had numerous ford trucks and SUV's come in for security or r/s (including keyless) that have had problems with the locks. If you use the power locks once in a while they seem to work fine, but after hitting lock and unlock a few times to test for lock wires, the locks don't want to work anymore. It almost seems like the lock motors are burning out. If you leave it sit for a while, start it, then let it run for a couple of minutes they seem to work just fine again. At first I thought it was just the voltage being too low and the locks weren't getting enough power. Not true. I tested the voltage when they worked, 11.3v, and when they didn't 11.3v. This just confused the heck out of me, because it wasn't on just one vehicle, it was on many. any ideas????
Replies:
Posted By: defective
Date Posted: July 26, 2004 at 6:49 AM
are you using a data module or are you hooking up manually? -------------
Posted By: DYohn
Date Posted: July 26, 2004 at 8:32 AM
I'd be willing to bet it is being caused by the power lock solenoids heating up and jamming, or there is an alignment issue. If this is the case, it is a Ford problem (using too cheap components) and is nothing you are doing. ------------- Support the12volt.com
Posted By: mobile1
Date Posted: July 26, 2004 at 11:21 AM
we have sent these customers to the dealership to get the locks fixed, and haven't had to reimburse them. Ford is taking all the blame. I was just wondering if anyone else has run into this or not
Posted By: mobile1
Date Posted: July 26, 2004 at 11:23 AM
defective wrote:
are you using a data module or are you hooking up manually?
yeah we're hooking them up with a 451m lock relay from DEI.
Posted By: sparkie
Date Posted: July 26, 2004 at 1:28 PM
The problem may be due to Ford's SLAM LOCK system. The door lock system goes to sleep after 20 minutes. There should be a yellow/black wire for the driver's doorpin. It grounds when the door is closed and is open with the door open. Use a relay to open this wire and use the locl and unlock wires to activate the relay. Diode isolate the lock/unlock wires.
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sparky
Posted By: defective
Date Posted: July 26, 2004 at 1:47 PM
ithink sparkies onto something, i remeber that issue. -------------
Posted By: mobile1
Date Posted: July 26, 2004 at 10:33 PM
already taken care of that. If by SLAM LOCK you mean the GEM anyway. if not, please elaborate
Posted By: sparkie
Date Posted: July 27, 2004 at 4:06 PM
There is a yellow/black wire that acts as a doorpin wire. It tells the GEM module that the door is open or closed. After the doors are closed for 2o minutes the GEM module goes to sleep if the vehicle has the SLAM lock system. The wire acts oppposite to normal vehicles. When the doors are closed it rests at ground. When you open the doors the wire rests at open or loses ground. You need to use the door unlock wire to terminal #86 of a relay. Terminal #85 to fused 12 volts battery. Cut the yellow/black wire and attach the two cut ends to terminals 87a and 30. Install a diode in the unlock wire to the relay with the band facing the alarm. Also place a diode in the unlock wire going from the alarm to the vehicle's unlock wire with the stripe/band facing the alarm. This set-up will 1. Cause the relay to open the yellow/black wire making the GEM module think a door has opened and wakes up the GEM module. 2. Pulse the unlock wire.
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sparky
Posted By: mobile1
Date Posted: July 27, 2004 at 7:00 PM
1.)ignition on press unlock 3times 2.)ignition off press unlock 3times 3.)ignition on press unlock 2 times horn will honk If you do this you will shut off the GEM sleep mode. I've done this and I still have the problems. I can hear the lock motors trying to work, but it seems like the locks are stuck almost. thanks for the reply any more suggestions would be appreciated.
Posted By: sparkie
Date Posted: July 27, 2004 at 7:10 PM
Without having the vehicle present to test, I'm short on ideas. Try duplicating the condition where the door locks won't move, but make noise. Reach inside the vehicle and open a door manually. Then try the remote unlock. If it works then something may be wrong either with the GEM module or it isn't fully waking up for some reason. Keep trying and post your results.
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sparky
Posted By: another-kelly
Date Posted: July 27, 2004 at 7:28 PM
we've ran into this too. it's not the GEM falling asleep you are talking about. you're saying that you are testing the locks and within 5 minutes the just quit. 10-20 minutes later they work fine though right. it was mentioned earlier, apparently just cheap actuators or of the sort. they heat up and quit working until they cool down. the locks aren't intended to be locked/unlocked several times back to back to back to back to... you get the point. after leaving the shop though, we never had anyone return them with problems. we just figured imported parts bolted on in america.
Posted By: mobile1
Date Posted: July 28, 2004 at 1:23 PM
thats pretty much exactly what was happening, Whats funny is I have a 99 Explorer and my Drivers door lock is starting to act up myself. I have a Clifford rs3.5 in there that I put in and has never given me any problems. I think I'm going to put 4 new actuators in there and see what happens. thanks for the help.
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