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Forbish07
Dodge Dakota
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2/06/2008
19:47:16

Subject: Door lock problem
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I am having a new issue with my truck. It is a 2000 dak club cab 4.7 auto. The power door locks arent working properly. I cannot lock them with either of the switches or the alarm remote. The only time I can get any sort of automation out of them is if lock them manually, set my alarm, and than when I disarm my alarm they will unlock by themselves. It is the same thing when I turn off my truck, if I had locked them manually, when I turn the ignition off they will unlock. I dont understand it!! I dont see this as being an actuator problem as I have had that happen before, and this is affecting BOTH sides. I can unlock and lock the doors with the key or by hand no problem. I can hear a relay "pop" sound on the passenger side by the dash when I hit the switch but nothing happens, just the sound. Any ideas?? The fuse on left side of the dash is fine BTW.



bigbrew
Dodge Dakota
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2/07/2008
00:04:05

RE: Door lock problem
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what kind of alarm do you have installed, and is it hooked up properly, i think your truck has a one wire system for the lock, and unlock they need different resistance for each so your alarm is probably a negative trigger, which goes to a relay, which then goes through a resistor, to a wire in the kick panel. here is a link to your wiring daigram

http://64.85.6.121/diagrams/printpage.asp?ModelID=13790&MakeID=16

hope this helps



Forbish07
Dodge Dakota
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2/07/2008
01:10:31

RE: Door lock problem
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Thank you very much, I will check it out. The alarm by the way is an older clifford, I had it installed when the truck was new like 7 years ago!!



Jimmy9190
Dodge Dakota
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2/07/2008
21:21:10

RE: Door lock problem
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The main thing here is did the truck have the factory keyless entry system or only have the factory electric locks? The type of lock system it had from the factory will determine how the Clifford alarm is interfaced with the locks. If it had the factory keyless system, it's a one-wire door lock system triggered through the lock and unlock outputs from the alarm. On that type of system you had to use relays to give enough of a ground output to 2 resistors to the single lock-unlock wire in the kick panel. I think the resistors were (I think this is the right values) 820 ohm for lock and 330 ohm for unlock and the lock-unlock wire was white with light green stripe (I think). The clicking sound you hear is probably the relays clicking when they energize, and that makes me think you have that type of system. If this alarm has been installed for 7 years it could be the lock outputs are bad now. To test for that you could find the relays under the dash and trigger the negative side of the coil on the relay to ground. It should be terminal 85 on the relays. That will tell you if the lock interface with the resistors is working. If they work manually triggering the relays, the alarm output is bad. If they still don't work the you need to get further into the interface. If you do have the one wire system, maybe the leg or the connection for the resistor broke. They are pretty thin.

If your Dakota did not have factory keyless, the door locks were triggered by a positive pulse through the factory lock and unlock relays. The Clifford alarm will be wired to trigger the locks with relays to the pink and orange lock and unlock wires in the kick panel. The diagram bigbrew sent you tells the color wire to find. You can still test the relays for the Clifford by triggering the gound side of the coil on each relay to ground. If the door locks work manually triggering the relays in that type of system, the master door lock switch is bad. Yours may very well be a positive trigger system, based on what you have said about the problem. You need to get into the wiring and see how it was interfaced before you can really troubleshoot this problem. I almost think the factory master switch is bad from what you have said in the original post. If I remember it right the master switch is the one on the driver's door. If you can't get the locks to trigger manually through the relays under the dash that are connected from the alarm, the lock relay in the power distribution center might be bad. That's not likely unless the relay got wet or physically damaged, but it's a possibility.

Another much simpler solution would be if the shop that installed the alarm to begin with is still in business and if so do they have a lifetime labor warranty? If they are and they do, maybe they could trouble shoot it for you. If not, any good car audio-alarm shop could check it out for you. I'm not sure who sells Clifford anymore though. Clifford.com has a dealer locator on the home page. Good luck with it.

Jimmy





Forbish07
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2/08/2008
14:31:54

RE: Door lock problem
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Wow, thanks Jimmy!! Actually I did a little searching yesterday and found that I had a bad relay, replaced it and all is well. Oh and my truck does have factory installed keyless entry, not that that matters any more though. Thanks again!!



Jimmy9190
Dodge Dakota
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2/08/2008
19:23:20

RE: Door lock problem
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Glad to know it was an easy fix.



JIm
Dodge Dakota
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4/28/2013
22:38:36

RE: Door lock problem
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What relay did you replace? I have a click and no power locks from the switch or remote. Thanks



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