Print Page | Close Window

2015 Ram 1500, Master Switch Door Lock Issue

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=146873
Printed Date: August 16, 2022 at 1:39 PM


Topic: 2015 Ram 1500, Master Switch Door Lock Issue

Posted By: alfwc55
Subject: 2015 Ram 1500, Master Switch Door Lock Issue
Date Posted: June 06, 2021 at 8:58 AM

My driver door master switch will unlock my doors but not lock the doors. I have tried 2 switches and 2 modules with no success. Wires all have continuity. I need to find which wires or wire is the continuous power to the lock switch. Any help would be appreciated.

2015 ram 1500

-------------
alfwc55



Replies:

Posted By: i am an idiot
Date Posted: June 06, 2021 at 3:46 PM
Will they lock from the passenger door switch? Did you buy a new switch panel or was it used? Those panels are sensitive to water. They get rained on and quit working.

Is there a violet wire with a light green stripe on it anywhere in the wires on that switch assembly?
Do you have a multimeter?




Posted By: alfwc55
Date Posted: June 06, 2021 at 3:58 PM
The switch will unlock all doors but will not lock anything.....

-------------
alfwc55




Posted By: i am an idiot
Date Posted: June 06, 2021 at 4:07 PM
Can you lock the doors from the passenger door? Re-read my previous post. I edited it after you replied.




Posted By: i am an idiot
Date Posted: June 06, 2021 at 6:07 PM
Directechs tells you to catch the wire for lock and unlock in the passenger door. I am thinking the passenger door module may be the main one. You said you changed 2 modules, was one of them the passenger side?




Posted By: alfwc55
Date Posted: June 07, 2021 at 8:47 AM
To answer your previous posts, I just purchased a new oem module for the drivers door and a new master switch for the same door. The passenger side switch will lock and unlock the doors but nothing has changed on the driver door, the master switch will only unlock the doors but will not lock the doors. I do have a multimeter, I am hoping that the wire you mentioned in your post is the power wire for the lock to the driver side lock switch..
Thank you for helping.

-------------
alfwc55




Posted By: i am an idiot
Date Posted: June 07, 2021 at 3:19 PM
The wire I mentioned is not the power wire. The door lock circuit is not what you are thinking. It is a multiplex system that uses that one wire to lock and unlock. Lock via 330 ohms to ground, and unlock via 100 ohms to ground.

If that wire is present, disconnect the battery(ies), tap into that wire and put your meter to ohms or 2000 ohm setting. One lead to that wire and ground the other lead. Press and hold unlock, does it read near 100? If so, we know that is the correct wire. Now press lock, does it read near 330?

If that wire is there, and you can get a 330 ohm 1/4 watt or higher wattage resistor, tap into that wire and ground it through the resistor. That should lock the doors.




Posted By: alfwc55
Date Posted: June 09, 2021 at 5:52 PM
Again appreciate your posts. Have been to busy at work to check that wire yet plus my truck is in getting some engine work done to it so I'm hoping to get it back today...

-------------
alfwc55




Posted By: alfwc55
Date Posted: June 11, 2021 at 9:27 AM
I could not find the wire you mentioned so I took a photo of the wires in the door that are similar to what you described. posted_image

-------------
alfwc55




Posted By: alfwc55
Date Posted: June 11, 2021 at 9:34 AM
Attached is a photo of the wires going directly to the switch. posted_image

-------------
alfwc55




Posted By: i am an idiot
Date Posted: June 11, 2021 at 4:27 PM
Disconnect the battery(ies). Ground a meter lead to the chassis of vehicle. Set meter to ohms or 2000 ohms. Stick the other lead into the wire socket that plugs into the switch. Hit lock and unlock on the switch to see which wire changes reading when you lock and unlock. The wire may be a different color in the drivers door.




Posted By: alfwc55
Date Posted: June 11, 2021 at 5:02 PM
Turns out to be both, a faulty switch and control module. All is working again. Thanks for the help.

-------------
alfwc55





Print Page | Close Window