Door Ajar light will not go off.
#1
Door Ajar light will not go off.
My 99 Ranger 3.0L's door ajar light will not go off. I've tried the wd40 trick and nothing happens. When all doors are closed the light stays illuminated but when the passenger door opens the light continues but the door ajar alarm goes off. BUT when I open the driver door no door ajar alarm. Is it the driver side door? My truck is a 2 door FYI. Is there any other way besides buying another 2 or 3 bottles of WD40?
#3
No, I found it on here somewhere but some says it works but after I used 3 cans I gave up. Your suppose to spray where the switch is at the lower henge and open and shut the door a few times and repeat because the switch will stick but, not for me. I'm tired of not having a dome light.. and the damn light being on.
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Petepumpnstuff3r (06-18-2023)
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#6
There is a button, should be on the A pillar. held on by a stop nut. take the drivers kick panel out, i'm pretty sure its back there. unplug the connecter and test the wires
most likely its a ground problem if the switch is fine. The only problem with that is the switch grounds under the drivers seat. Heres the best way to check it. You got a test light? find one.
Check both pins in the connecter, both with the light grounded, both without. only one should light up per test (I.E. one pin works when the switch is grounded, the other pin works when it isn't grounded, thus when the switch gets pressed, completes the circuit and shuts off the door ajar light)
The best picture i can come up with is from the parts store, this is what the module looks like.
most likely its a ground problem if the switch is fine. The only problem with that is the switch grounds under the drivers seat. Heres the best way to check it. You got a test light? find one.
Check both pins in the connecter, both with the light grounded, both without. only one should light up per test (I.E. one pin works when the switch is grounded, the other pin works when it isn't grounded, thus when the switch gets pressed, completes the circuit and shuts off the door ajar light)
The best picture i can come up with is from the parts store, this is what the module looks like.
#9
#10
I had this same problem in my truck. i did and it turned out the original door that i thought was stuck was not actually the stuck one, i just took the light bulb out until i finally figured out that it was the other door. So my advice is to clean out all of the door's latching mechanisms. I don't think you have the pin sensor in the a-pillar like the older models have because i don't have it either.
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#17
My 99 Ranger 3.0L's door ajar light will not go off. I've tried the wd40 trick and nothing happens. When all doors are closed the light stays illuminated but when the passenger door opens the light continues but the door ajar alarm goes off. BUT when I open the driver door no door ajar alarm. Is it the driver side door? My truck is a 2 door FYI. Is there any other way besides buying another 2 or 3 bottles of WD40?
#18
#19
x2. i put a few sprays on each latch and put my whole body into closing the door a few times and it worked after 2 slams haha
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#21
I just recently bought my truck and it has had the door ajar light on since I got it. I tried the WD40 trick without success, so I did some more research on how they worked and various fixes. I removed the door panels and the switches and tested them with my multimeter, and both switches functioned properly. Found out that they are N/O (normally open) switches, so when the door is open, the circuit is grounded out (closed). Each door switch runs to a GEM located behind the radio. When the GEM senses the closed circuit, it tells the door ajar light and the dome light to come on. So, after leaving both door switches disconnected, the door ajar and the dome light should have been off, but nope. So, obviously one side or the other is grounding out somewhere along the way from the door switch to the GEM, right? Or the GEM itself going bad? Going to try to get to the bottom of it tomorrow, will keep everyone informed of my progress.
#22
I just recently bought my truck and it has had the door ajar light on since I got it. I tried the WD40 trick without success, so I did some more research on how they worked and various fixes. I removed the door panels and the switches and tested them with my multimeter, and both switches functioned properly. Found out that they are N/O (normally open) switches, so when the door is open, the circuit is grounded out (closed). Each door switch runs to a GEM located behind the radio. When the GEM senses the closed circuit, it tells the door ajar light and the dome light to come on. So, after leaving both door switches disconnected, the door ajar and the dome light should have been off, but nope. So, obviously one side or the other is grounding out somewhere along the way from the door switch to the GEM, right? Or the GEM itself going bad? Going to try to get to the bottom of it tomorrow, will keep everyone informed of my progress.
The power flow of this circuit is as follows: Power flows from the dash through the door ajar lamp to the SJB via two wires. One leg (Light Green with Black Stripe) goes to the Low Current Board connector 2280C terminal 2. The other leg (Yellow with Light Green stripe) goes to connector 2280D terminal 4.
The Left Door ajar switch runs to connector 2280C terminal 6 (Yellow with Black Stripe). The Right Door ajar switch runs to connector 2280D terminal 3 (Gray with Red Stripe).
Terminals 2 & 6 on connector 2280C and Terminals 4 & 3 on connector 2280D appear to be interconnected on the Low Current Board.
SJB Diagram Click Link
Last edited by Rev; 04-04-2012 at 10:01 PM.
#23
Thank you very much Rev, I had been doing more research and learned that the SJB had replaced the GEMs, but wasn't sure which connectors or pins were being used by the door ajar circuit. I pulled the connectors off and there was some green corrosion buildup in a few spots on both. I'm about to go to Lowes or Walmart and pick up some electrical contact cleaner and give everything a good squirt and see what happens.
#24
Thank you very much Rev, I had been doing more research and learned that the SJB had replaced the GEMs, but wasn't sure which connectors or pins were being used by the door ajar circuit. I pulled the connectors off and there was some green corrosion buildup in a few spots on both. I'm about to go to Lowes or Walmart and pick up some electrical contact cleaner and give everything a good squirt and see what happens.