Hey Everyone...2002 Dakota Quad Cab...has power mirrors and power door locks. The power door locks on all 4 doors unlock and lock with the key fob, however do not lock or unlock with any of the door switches.


Also the power mirrors do not work at all however the heated portions of the mirrors work fine when I turn on the rear defroster as they are supposed to.


At this point I have not begun investigation, thought I would ask if it something simple


Any suggestions?

 

Check fuses.

 

Seems that maybe the power to the switches is interrupted. The suggestion about checking fuses wouldn't be correct since if there were a fuse problem the locks wouldn't work with the FOB either. I'm going to guess the problem lies in the harness to the drivers door since that is the master circuit to control the locks and the mirrors. The heaters aren't controlled from the door, only the dash controls and there is no reason for the wiring to pass through the door. I'd guess the bundle that connects the door to the body will have the broken wire in it. You might get lucky if you remove the door card first. The wire would be broken but the plastic sleeve it is in, the insulation, may not be. Pull the card and try wiggling the wire as it enters the door. I'm guessing the wire in question would be the heaviest one since it would be supplying the power for everything.

Good luck!

 

IMO The body module would be the culprit. The heated mirrors are controlled by your rear defrost switch. That you may want dealer to diagnose. You can get in real trouble poking around with bus systems. It will end up costing more in the end if you inadvertently smoke check an unintended component. Just sayin. Good luck.

 

my durango has the same problem every now and then and i have had a few chevys do the same thing. the fix for the chevys was changing the whole switch and haven't messed with my durango to know the cause yet because doesn't happen that much. hope this helps.

 

The body module was my first thought too.

 

further to this...I have dig a little deeper and I have checked the fuses and relays etc and they all seem to functioning correctly. As it stands right now, each of the doors will unlock with the key in the door lock or by use of the remote keyless fob...none of the door switches will unlock their respective doors...the main power door lock switch on the drivers door does not work either...the power mirrors do not work at all except the defrost portion which as mentioned is controlled by the rear defroster switch. I am thinking about replacing the BCM but does anyone know how involved the reprogramming portion of the BCM is to work with existing key fobs etc?

 

okay so I replaced the main switch bank on the drivers door and now everything works but the power door locks. The doors will lock and unlock with the remote key fob so the lock actuators work, they just will not lock or unlock with the door switches on either the drivers or passenger doors. I do not believe it is the drivers side door switch as that is a brand new switch bank...there is no seperate fuse that I can find for the power door locks...at least nothing in the fuse panel or under the hood. all the other functions on the drivers door work fine, power windows all work, power mirrors work so power is getting to the switch, just not operating the power door locks.

 

 

thanks I will try that...I am trying to find the wiring diagram so I can identify which wires are specifically for the power locks in the that harness. given that the key does not have to be in the on position for the power door lock to work would lead me to believe the switch is "hot" all the time...however I am wondering if that power would be coming from the fuse or relay box or from the BCM...Anyone got a good wiring diagram for a 2002 Dakota Quad Cab that shows the wiring for the power door locks?.and any knowledge of the wiring in general that would help me diagnose this issue. Thanks