Power door locks

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Mar 21, 2015 | 10:07 AM

rob8210

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Tuned

Joined: Dec 2007

Posts: 323

Likes: 8

Power door locks

I have a 2002 f150 supercrew, 4wd. The power door locks stopped working the other day and I am pulling my hair out ( at least the grey hair) trying to fix it. So far I have checked the fuse in the power distribution box, good. I have checked the wires from the doors to the cab along the door sills to the rear doors , all good. I did find a couple of iffy grounds on the left kick panel and cleaned and repaired them. I am having a heck of a time finding the group of relays that control the lock and unlock functions. Remember , I have no power lock function at all. I would swear its not getting power to the relays but until I find them , I just don't know. Anybody here know where they are supposed to be?

Mar 22, 2015 | 02:16 AM

Bluegrass 7

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Joined: Sep 2006

Posts: 7,907

Likes: 143

If they all fail, they are not getting power to operate.
The up and down switches just reverses the applied polarity to the DC motors.
Be sure you looked at the correct fuse.
Good luck.