Troubleshooting door ajar switch
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Fleet Mechanic
Joined: Feb 2004
Posts: 1,816
Likes: 3
From: River Valley AR
Troubleshooting door ajar switch
Hi guys,
It seems lately that when I wash my truck, I get a door open light on the dash that goes off in a day or two regardless of anything else I do.
I am sure that one of my switches is getting wet and eventually drying out. Does anyone have any troubleshooting tips, schematics, etc. that could save me from having to pull all the door panels to check each individual switch?
Also I am assuming that these switches would be closed when the door is closed and open when the door is opened. I'm hoping that there is a connector somewhere that I can unplug and take some resistance readings to find out who my culprit is.
I guarantee you that if I just start randomly pulling door panels I won't find it until the last one. Thanks in advance for any pointers.
It seems lately that when I wash my truck, I get a door open light on the dash that goes off in a day or two regardless of anything else I do.
I am sure that one of my switches is getting wet and eventually drying out. Does anyone have any troubleshooting tips, schematics, etc. that could save me from having to pull all the door panels to check each individual switch?
Also I am assuming that these switches would be closed when the door is closed and open when the door is opened. I'm hoping that there is a connector somewhere that I can unplug and take some resistance readings to find out who my culprit is.
I guarantee you that if I just start randomly pulling door panels I won't find it until the last one. Thanks in advance for any pointers.
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
This might help some:
https://www.ford-trucks.com/forums/8...or-switch.html
And this is a long one:
Weird door ajar problem - Diesel Forum - TheDieselStop.com
https://www.ford-trucks.com/forums/8...or-switch.html
And this is a long one:
Weird door ajar problem - Diesel Forum - TheDieselStop.com
Hotshot
Joined: Apr 2010
Posts: 19,074
Likes: 245
From: Saratoga Springs,UT
This might help some:
https://www.ford-trucks.com/forums/8...or-switch.html
And this is a long one:
Weird door ajar problem - Diesel Forum - TheDieselStop.com
https://www.ford-trucks.com/forums/8...or-switch.html
And this is a long one:
Weird door ajar problem - Diesel Forum - TheDieselStop.com
Looks like we was thinking the same thing Rusty
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
Yup 
, I haven't had a problem with 'em yet but looks like a a few folks have. Looks like $20 will get ya a new switch, 30min to change it out, but I'm with the OP about how to figure which one to change? (IF spraying don't fix it)
, I haven't had a problem with 'em yet but looks like a a few folks have. Looks like $20 will get ya a new switch, 30min to change it out, but I'm with the OP about how to figure which one to change? (IF spraying don't fix it)
Hotshot
Joined: Jul 2005
Posts: 13,834
Likes: 26
From: Middle Tn.
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Lead Driver
Joined: Feb 2011
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From: L.A. (Lower Alabama)
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Junior User
Joined: Nov 2011
Posts: 83
Likes: 0
From: Harrisburg Pa
I just changed my door latch because it was locking me out. Switch has been defective since november I was surprised that the door switch is attached to the door latch by a quarter turn. It took me almost 2 hours to change start to finish
FTE Remembers
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
Ok.
I have to ask this. It sort of goes with finding the bad switch.
Guy has a F-250 Diesel. And he also has a pile of ford keys.
Why is it that every time he looks for the key it is always
the last key he uses ?
Answer below.
Because he stops looking when he finds the one that opens the door.
Also if you don't like the mess that WD-40 makes you may want to look for this stuff
it tense to be a bit more $ ACF-50 anti corrosion. One of it's intended uses is for electrical. You should be able to pick it up at most aircraft supply shops or pilot shops.
Sean
I have to ask this. It sort of goes with finding the bad switch.
Guy has a F-250 Diesel. And he also has a pile of ford keys.
Why is it that every time he looks for the key it is always
the last key he uses ?
Answer below.
Because he stops looking when he finds the one that opens the door.
Also if you don't like the mess that WD-40 makes you may want to look for this stuff
it tense to be a bit more $ ACF-50 anti corrosion. One of it's intended uses is for electrical. You should be able to pick it up at most aircraft supply shops or pilot shops.
Sean
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
Wow, too cool. I guess everything is on the data bus these days. How did we ever live without computers.
Post Fiend
Joined: Oct 2009
Posts: 12,123
Likes: 35
From: N. Fort Worth, tx
we took door panels off alot more. one of the many reasons I hate 7.3's