Door lock voltage issue
Thread Starter
|
Laughing Gas
Joined: Mar 2007
Posts: 898
Likes: 23
From: Tucson
Door lock voltage issue
Hey everyone. Over the past couple of months my passenger door lock hasn't been working properly. I've preformed the door lock fix with the aluminum foil 6 or 7 years ago and tried it again recently thinking that may be the problem. No such luck.
I bought new actuators and replaced the passenger side one and same problem still. I then checked the voltage coming from the switch. Drivers door on lock and unlock sends 11.5V to the actuator. Passenger door on luck and unlock only sends 1.5V to the actuator. Where do I go from here? I've read something about door lock relays but no one seems to know where they're located. Any help is greatly appreciated!
I bought new actuators and replaced the passenger side one and same problem still. I then checked the voltage coming from the switch. Drivers door on lock and unlock sends 11.5V to the actuator. Passenger door on luck and unlock only sends 1.5V to the actuator. Where do I go from here? I've read something about door lock relays but no one seems to know where they're located. Any help is greatly appreciated!
Posting Guru
Joined: Oct 2012
Posts: 1,910
Likes: 2
From: Hat Creek Ca
I don't have a schematic available to see what's what but it could just be a bad connection somewhere in the feed to the switch.
Did you but OEM actuators? Will they work on the bench with a test battery?
Did you but OEM actuators? Will they work on the bench with a test battery?
Fleet Mechanic
Joined: Nov 2010
Posts: 1,408
Likes: 249
From: Ringgold, Ga
Todd you need to pull the radio in order to get to the relays.
There behind and between climate control and radio on the firewall.
I used my key fob while reaching in and touching relay while lock and unlocking. You can here them with engine off.
Pretty sure if other doors are working the relay may be good. If anything mark them and then switch them around. See if volatage follows the relay.
If I remember right its 3 relays. Lock, Unlock, Horn and thinking about maybe 1 for the Parking lights flash.
If truck has keylessentry the lights blink and horn toots when double clicking lock on remote
There behind and between climate control and radio on the firewall.
I used my key fob while reaching in and touching relay while lock and unlocking. You can here them with engine off.
Pretty sure if other doors are working the relay may be good. If anything mark them and then switch them around. See if volatage follows the relay.
If I remember right its 3 relays. Lock, Unlock, Horn and thinking about maybe 1 for the Parking lights flash.
If truck has keylessentry the lights blink and horn toots when double clicking lock on remote
Thread Starter
|
Laughing Gas
Joined: Mar 2007
Posts: 898
Likes: 23
From: Tucson
I searched everywhere, even behind the radio and didn't find any relays. According the Haynes manual our trucks either came with them (and RKE) and or didn't. I'm guessing mine was one that didn't. I pulled the old actuators back out, cleaned them up really good, added new foil and reinstalled. Seem to be working fine for whatever reason so I'm good with that. Thanks for all the help!
Post Fiend
Joined: Sep 2003
Posts: 6,096
Likes: 27
From: Mesa AZ
I searched everywhere, even behind the radio and didn't find any relays. According the Haynes manual our trucks either came with them (and RKE) and or didn't. I'm guessing mine was one that didn't. I pulled the old actuators back out, cleaned them up really good, added new foil and reinstalled. Seem to be working fine for whatever reason so I'm good with that. Thanks for all the help!
You are correct. The relays only occur on the RKE models. Here are the wiring diagrams in case you have the need later.
Trending Topics
Thread Starter
|
Laughing Gas
Joined: Mar 2007
Posts: 898
Likes: 23
From: Tucson
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Thread
Thread Starter
Forum
Replies
Last Post
Captain 'Murica
1999 - 2016 Super Duty
19
May 16, 2021 12:12 PM
Saxon
1987 - 1996 F150 & Larger F-Series Trucks
14
Dec 31, 2009 06:40 PM
3BBB
1997 - 2006 Expedition & Navigator
2
Jan 3, 2008 06:05 AM