Door Ajar won't go off - HELP - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

meow_mix · 09-12-2015, 09:54 PM

Alright, I was driving and my dome light came on because it said a door was ajar. I know it's the driver side door because the window won't roll up all the way. Can't lock the car because a "door is open". Tried pressing the door close button on the body manually and nothing. Swapped it with the passenger side button and it's still showing the driver's side door is open.

Any ideas?!

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humfrz · 09-13-2015, 12:00 AM

So, when the door is open and you press in the button on the door jam, does the window move a little ... ??

Have you checked the positions #10, 24 & 36 fuses (box under the hood)...??

humfrz

humfrz

Ultramaroon · 09-13-2015, 03:38 AM

If I'm correctly reading the wiring diagram, the door ajar switches go straight to dedicated channels on the BCU. An open door pulls a logic signal to ground. Either that wire must be shorted to ground somewhere, or the fault lies in the BCU itself.

I don't know how long the battery must be disconnected before everything resets itself but maybe try disconnecting it for a few minutes and then see if that doesn't reset the BCU.

It's a long shot.
@steve99 posted a link to the wiring diagram in another post tonight. Check out page 268.

steve99 · 09-13-2015, 04:47 AM

Id go to page 185 (or 268), front dooor switch signals BCU directly if dome light on and dash door indicator indicator on and window stuch down it looks like short to earth on G18 or H21 switch assembly or wiring.

remove offending switch assembly from door and disconnect see if light goes out if your lucky its just a stuffed door switch, then next best is short to earth in wiring and worst case is stuffed BCU (body control unit )

unlikely to be a fuse as you would get no light.
unlikely to be short to earth on courtesy light side as BCU would not get signal to indicate door ajar

It appears BCU is being signaled that door is permanently open most likely is stuffed door switch

meow_mix · 09-13-2015, 11:50 AM

Alright, after swapping the door ajar buttons the problem persisted on rhe driver's side. After some fiddling, it went away. Drove home fine. This morning it came back on, then went off after messing with rolling the windows up and down. Gonna try and unplug the battery for a bit. :/

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Ultramaroon · 09-13-2015, 02:23 PM

Quote:

Originally Posted by meow_mix

Alright, after swapping the door ajar buttons the problem persisted on rhe driver's side. After some fiddling, it went away. Drove home fine. This morning it came back on, then went off after messing with rolling the windows up and down. Gonna try and unplug the battery for a bit. :/

Sent from my SAMSUNG-SM-G920A using Tapatalk

After reading that your problem is intermittent, I have less faith in it being a software issue but the battery disconnect is cheap. Don't forget that will also reset your ECU so throttle response will be shitty for a while. Don't freak out about that.

I did catch in your OP that you swapped the switches so those are fine. It's a messy but short trip for a single conductor from the switch to the BCU.

Ultramaroon · 09-26-2015, 12:41 AM

@meow_mix, updates?

Kaotic Lazagna · 09-26-2015, 03:18 AM

Can it be the door plunger?

cdq85 · 09-26-2015, 09:53 AM

doesn't the trunk throw the "door ajar" light up? I know you think you have it narrowed down to the door but give it a whirl. if the trunk doesn't actually kick that light on, ignore me as i'm still drunk

humfrz · 09-26-2015, 03:11 PM

Quote:

Originally Posted by Kaotic Lazagna

Can it be the door plunger?

DANG, Kaotic Lazagna ...... we know what ol cdq85's excuse is (see above) .... what's yours ..... ??

Maybe you were at the same party ......??

humfrz

Kaotic Lazagna · 09-26-2015, 08:20 PM

Lol. That was a legitimate question.

Ultramaroon · 09-26-2015, 08:27 PM

Quote:

Originally Posted by Kaotic Lazagna

Lol. That was a legitimate question.

Not if you had read the whole thread.

Kaotic Lazagna · 09-26-2015, 10:48 PM

Quote:

Originally Posted by Ultramaroon

Not if you had read the whole thread.

I just read stuff about fuses. Don't recall seeing plunger. Haha

Kaotic Lazagna · 09-27-2015, 12:33 AM

So much for scanning for words. LMAO. I see "button" now. But after reading through it some what more thoroughly, since messing with it solved it briefly, I still think it has something to do with the plunger.

09-13-2015, 03:38 AM	#3
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,395 Thanks: 53,053 Thanked 37,228 Times in 19,308 Posts Mentioned: 1118 Post(s) Tagged: 9 Thread(s)	If I'm correctly reading the wiring diagram, the door ajar switches go straight to dedicated channels on the BCU. An open door pulls a logic signal to ground. Either that wire must be shorted to ground somewhere, or the fault lies in the BCU itself. I don't know how long the battery must be disconnected before everything resets itself but maybe try disconnecting it for a few minutes and then see if that doesn't reset the BCU. It's a long shot. @steve99 posted a link to the wiring diagram in another post tonight. Check out page 268. __________________ service manuals

09-13-2015, 04:47 AM	#4
steve99 Banned Join Date: Dec 2013 Drives: FT86 Location: Australia Posts: 7,996 Thanks: 1,035 Thanked 4,994 Times in 2,984 Posts Mentioned: 598 Post(s) Tagged: 2 Thread(s)	Id go to page 185 (or 268), front dooor switch signals BCU directly if dome light on and dash door indicator indicator on and window stuch down it looks like short to earth on G18 or H21 switch assembly or wiring. remove offending switch assembly from door and disconnect see if light goes out if your lucky its just a stuffed door switch, then next best is short to earth in wiring and worst case is stuffed BCU (body control unit ) unlikely to be a fuse as you would get no light. unlikely to be short to earth on courtesy light side as BCU would not get signal to indicate door ajar It appears BCU is being signaled that door is permanently open most likely is stuffed door switch Last edited by steve99; 09-13-2015 at 05:00 AM.

09-26-2015, 12:41 AM	#7
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,395 Thanks: 53,053 Thanked 37,228 Times in 19,308 Posts Mentioned: 1118 Post(s) Tagged: 9 Thread(s)	@meow_mix, updates? __________________ service manuals

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09-12-2015, 09:54 PM	#1
meow_mix Good kitty... Join Date: Jun 2012 Drives: Blür Location: NOKC, Oklahoma Posts: 100 Thanks: 2 Thanked 27 Times in 17 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Door Ajar won't go off - HELP Alright, I was driving and my dome light came on because it said a door was ajar. I know it's the driver side door because the window won't roll up all the way. Can't lock the car because a "door is open". Tried pressing the door close button on the body manually and nothing. Swapped it with the passenger side button and it's still showing the driver's side door is open. Any ideas?! Sent from my SAMSUNG-SM-G920A using Tapatalk

09-13-2015, 12:00 AM	#2
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 30,432 Thanks: 29,826 Thanked 32,845 Times in 16,844 Posts Mentioned: 715 Post(s) Tagged: 2 Thread(s)	So, when the door is open and you press in the button on the door jam, does the window move a little ... ?? Have you checked the positions #10, 24 & 36 fuses (box under the hood)...?? humfrz humfrz

09-13-2015, 11:50 AM	#5
meow_mix Good kitty... Join Date: Jun 2012 Drives: Blür Location: NOKC, Oklahoma Posts: 100 Thanks: 2 Thanked 27 Times in 17 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Alright, after swapping the door ajar buttons the problem persisted on rhe driver's side. After some fiddling, it went away. Drove home fine. This morning it came back on, then went off after messing with rolling the windows up and down. Gonna try and unplug the battery for a bit. :/ Sent from my SAMSUNG-SM-G920A using Tapatalk

09-26-2015, 03:18 AM	#8
Kaotic Lazagna Senior Member Join Date: Apr 2014 Drives: GR Corolla Location: Lathrop, CA Posts: 4,943 Thanks: 3,096 Thanked 3,028 Times in 1,865 Posts Mentioned: 40 Post(s) Tagged: 2 Thread(s)	Can it be the door plunger?

09-26-2015, 09:53 AM	#9
cdq85 Senior Member Join Date: Dec 2014 Drives: 2013 Raven FR-S Location: Greensburg, PA Posts: 249 Thanks: 107 Thanked 285 Times in 113 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	doesn't the trunk throw the "door ajar" light up? I know you think you have it narrowed down to the door but give it a whirl. if the trunk doesn't actually kick that light on, ignore me as i'm still drunk

09-26-2015, 08:20 PM	#11
Kaotic Lazagna Senior Member Join Date: Apr 2014 Drives: GR Corolla Location: Lathrop, CA Posts: 4,943 Thanks: 3,096 Thanked 3,028 Times in 1,865 Posts Mentioned: 40 Post(s) Tagged: 2 Thread(s)	Lol. That was a legitimate question.

09-27-2015, 12:33 AM	#14
Kaotic Lazagna Senior Member Join Date: Apr 2014 Drives: GR Corolla Location: Lathrop, CA Posts: 4,943 Thanks: 3,096 Thanked 3,028 Times in 1,865 Posts Mentioned: 40 Post(s) Tagged: 2 Thread(s)	So much for scanning for words. LMAO. I see "button" now. But after reading through it some what more thoroughly, since messing with it solved it briefly, I still think it has something to do with the plunger.

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