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Door lock actuator doesn't work. Driver side rear door. New actuator doesn't work either. Didn't bolt it in but I tested it before removing the existing actuator. Flipped the latch on the new actuator and the LCD panel sensed the door closed.
Wiring diagram from online shows the circuit coming from the fuse box to the BCM. There seems to be internal and non-replaceable relays within the BCM. 1 relay for each door in the BCM.
Any suggestions? Unplug the battery to reset the BCM?
All other doors work. Replaced fuse for power doors 2x. I doubt the wiring harness went bad. What are the chances that the wire breaks midway through the vehicle and the the other wires (door closed sensor) work?
i had my dirver rear door not lock on me last week... i delt with doro ajar last winter. the wires in the door fray from time to time from a tube they use to keep the wires from binding but strips them..
I had pretty much same issue with drivers rear door unable to unlock or lock due to 4 wires were cut off. Not enough shield keeping those wires from getting damaged!
I thought it was the door actuater, took it apart and tested it with 9v battery she's was good to go.
Took me few days to figure it out but saved me few hundreds of dollars lol
Here's a picture 2011 F150 5.0 Lariat
Originally Posted by BRUTE448
i had my dirver rear door not lock on me last week... i delt with doro ajar last winter. the wires in the door fray from time to time from a tube they use to keep the wires from binding but strips them..
2012 Screw and just had my driver side rear door lock stop working. Popped the boot and just like this wires are just clean broken....insulation must get brittle and handle only so many cycles. Happy to find it but its silly that they are inside such a nice protective boot....but can't handle normal usage.
My rear driver side door just started unlocking/ locking intermittently. I have not had a chance to check wires yet but did you have to get a new wire harness or could you spice them back together?
My rear driver side door just started unlocking/ locking intermittently. I have not had a chance to check wires yet but did you have to get a new wire harness or could you spice them back together?
Butt connectors / splice/ solder and sheathing, shrink wrap! all will work!
When looking for the broken wires, after pulling the rubber boot out of the door where was everyone's broken wire and was it easily seen or did you have to remove the door panel to see them? Just trying to figure out what the deal is on my truck. Neither of my rear doors work 100% of the time.....more like 1% of the time. So I'm trying to figure out if this is an electrical or mechanical issue. I will say, both of my locks when pulling them up manually seem to be more resistant than normal which makes me lean towards mechanical, but them working intermittently makes me think electrical. Any help would be appreciated. Thanks in advance.
05-17-2016, 08:56 PM
Power door lock actuator doesn't work.
