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Old 03-28-2007, 04:47 PM   #1
shadyrex
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Default ABS disable switch help

I'm having a bad day. I spent waaay longer than I should've trying to disable my ABS with this from Scoobymods.

http://www.scoobymods.com/forums/sho...&highlight=abs

I did like it said/shows and my ABS light isn't turning on on the dash like it's supposed to. Just pulling the fuse didn't make a difference either whether it was in or out. I don't want to deal with the hassle of pulling the other ABS fuse behind the coin tray because you have to turn the car off and back on again to regain the ABS.

Is the ABS fuse different on the 06s? It looks the same and it seems to still be labeled ABS IG on the fuse just like on Scoobymods.

I'm not retarded when it comes to wiring. I just dunno why if I did it correctly or even just had the fuse out, why won't the ABS light turn on?
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Old 08-22-2007, 10:00 PM   #2
orbifold
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I upluged the harness where the break pedal is under the dash and now my abs light is on and the the bottom green light is flashing on the dccd meter i was wondering if any one can help me get the lights to turn off
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Old 08-23-2007, 02:27 PM   #3
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Quote:
Originally Posted by shadyrex View Post
I'm having a bad day. I spent waaay longer than I should've trying to disable my ABS with this from Scoobymods.

http://www.scoobymods.com/forums/sho...&highlight=abs

I did like it said/shows and my ABS light isn't turning on on the dash like it's supposed to. Just pulling the fuse didn't make a difference either whether it was in or out. I don't want to deal with the hassle of pulling the other ABS fuse behind the coin tray because you have to turn the car off and back on again to regain the ABS.
Is the ABS fuse different on the 06s? It looks the same and it seems to still be labeled ABS IG on the fuse just like on Scoobymods.

I'm not retarded when it comes to wiring. I just dunno why if I did it correctly or even just had the fuse out, why won't the ABS light turn on?

....switching this is the key....and if you don't want to 'stop/start' the engine to ccomplish this......then you should stop WANTING to do this mod at all, as it is not possible
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Old 12-04-2007, 03:56 PM   #4
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Quote:
Originally Posted by Uncle Scotty View Post
....switching this is the key....and if you don't want to 'stop/start' the engine to ccomplish this......then you should stop WANTING to do this mod at all, as it is not possible
I find that hard to believe. Theres NO WAY to re-initialize the ABS ? i'am assuming hear that the ECU power cycling is the trigger to initialize the ABS control unit. And if that is ture then can't we build a circuit to emulate that and in turn turn the ABS back one wile still driving the car.
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Old 12-04-2007, 11:57 PM   #5
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Originally Posted by zman519 View Post
I find that hard to believe. Theres NO WAY to re-initialize the ABS ? i'am assuming hear that the ECU power cycling is the trigger to initialize the ABS control unit. And if that is ture then can't we build a circuit to emulate that and in turn turn the ABS back one wile still driving the car.
...this HAS come up in the past......and the answer has not, nor WILL IT change just because YOU wish it.


YOU figure it out....YOU post it....and it has to do with the ABS computer figuring out 'where it is'....from rest/unmoving/'0' condition......IIRC....
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Old 12-05-2007, 12:38 PM   #6
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Quote:
Originally Posted by Uncle Scotty View Post
...this HAS come up in the past......and the answer has not, nor WILL IT change just because YOU wish it.


YOU figure it out....YOU post it....and it has to do with the ABS computer figuring out 'where it is'....from rest/unmoving/'0' condition......IIRC....
Wooo there Scotty calm down bro

I will search MORE i'am looking in to this. and this will be the first place i post it if i do figure any thing out

do you have any info.. On what really is causing this? as in what if you restart the car while its still rolling, Does the ABS start working? does the light go out if you do this?

Do the cars wheels have to be non moving & stopped Yes i know i can try that. But if any one knows, then its just ezer to ask.

And does any one know for know for certain if this is totally independent of the ECU

If any one has any electronics knowledge & or programing And would like to chime in Pleas do.
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Old 12-05-2007, 12:42 PM   #7
simon021
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Uncle Scotty is never calm
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Old 12-05-2007, 01:08 PM   #8
zman519
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Quote:
Originally Posted by simon021 View Post
Uncle Scotty is never calm
hehehe. well i'm not some dumbass that has no understanding about electronics and i have a little no how about programing

I'm just not shore wear to start. (thinking out load hear) tap in to some of the ABS sensors with a scope and see whats going on under different break loads, what about taping in to the ABS's CPU/controller bord and forcing it the power cycle, Or making it reboot reloading the ABS code in to the ram.

Does that make any sense to you guys. Any one know the make/manufacturer/Part# of the CPU/controller chip in the ABS module,

How about schematics of the bord in the ABS module?
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Old 12-05-2007, 09:13 PM   #9
zman519
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Bump any electronics engineers have any input about this or my hypothesis
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Old 12-05-2007, 10:10 PM   #10
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Quote:
Originally Posted by zman519 View Post
hehehe. well i'm not some dumbass that has no understanding about electronics and i have a little no how about programing

I'm just not shore wear to start. (thinking out load hear) tap in to some of the ABS sensors with a scope and see whats going on under different break loads, what about taping in to the ABS's CPU/controller bord and forcing it the power cycle, Or making it reboot reloading the ABS code in to the ram.

Does that make any sense to you guys. Any one know the make/manufacturer/Part# of the CPU/controller chip in the ABS module,

How about schematics of the bord in the ABS module?
...I would start with figuring out what exactly happens when you shut it down and.... what happens when power is re-applied that differs from a cold start...

....and schematics of any of the internals of any of the modules is likely NOT gonna be easy to obtain.....


...and I know that several board members HAVE 'played' with this and I have not seen anything on it.

....so...YOU figure it out....YOU post it.....it HAS been attempted....I know that.
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Old 12-05-2007, 11:33 PM   #11
zman519
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Scotty

your totaling right about schematics there almost impossible to get for any thing.

But any how have you ever looking in to this your self?
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Old 12-06-2007, 08:03 PM   #12
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Quote:
Originally Posted by zman519 View Post
Scotty

your totaling right about schematics there almost impossible to get for any thing.

But any how have you ever looking in to this your self?
I have looked into MOST of these kinds of things.......

Member Jon [in CT] may be able to get something if anyone can......and emailing/calling the company that makes the module may yeild unexpected results.

finding a 'spare' ABS module in a boneyard is likely your best bet....and reverse engineering seems most likely.


....and most of us are happy with the ability to get it disabled and have it restart again
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Old 12-06-2007, 08:24 PM   #13
zman519
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Ya i was looking around for one from a boneyard. I just think it would be really nice to be able to turn ABS on with a flick of a button
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Old 12-17-2007, 02:21 PM   #14
Windstorm
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Where is the ABS computer located?
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Old 12-19-2007, 08:05 AM   #15
quahog
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On my 2002 RS (which will be the same as a WRX since the shop manual wiring section is the same) the fuse to put a switch inline with to disable/reenable without restarting the car is at the bottom of the relay block just to the immediate right of the fuse block under the dash. The fuse is the second from the right, red 10A in my car. There are openings for 4 fuses. My car only has the right two filled...so, it's the fuse in the 3rd opening.

I tested it the other morning while the car is running, once the fuse it put back in the ABS light goes out in about 1 second.

From looking at the schematic, the side you should splice into is the top wire at the back of the fuse (since this wire is the cold side when the fuse is out). The wire is labeled WB which I assume means white with a black stripe or maybe the opposite. The hot side should be white (for reference).

I take no responsibility for any damage to your car.
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Old 12-19-2007, 08:23 AM   #16
simon021
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Quote:
Originally Posted by quahog View Post
On my 2002 RS (which will be the same as a WRX since the shop manual wiring section is the same) the fuse to put a switch inline with to disable/reenable without restarting the car is at the bottom of the relay block just to the immediate right of the fuse block under the dash. The fuse is the second from the right, red 10A in my car. There are openings for 4 fuses. My car only has the right two filled...so, it's the fuse in the 3rd opening.

I tested it the other morning while the car is running, once the fuse it put back in the ABS light goes out in about 1 second.

From looking at the schematic, the side you should splice into is the top wire at the back of the fuse (since this wire is the cold side when the fuse is out). The wire is labeled WB which I assume means white with a black stripe or maybe the opposite. The hot side should be white (for reference).

I take no responsibility for any damage to your car.
I tested this same thing yesterday after wiring up my switch to the same spot he is talking about. ABS light goes off after turning it back on, and the abs kicks in like it should. Seems to work just fine without restarting the car...
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Old 12-19-2007, 02:41 PM   #17
zman519
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Quote:
Originally Posted by simon021 View Post
I tested this same thing yesterday after wiring up my switch to the same spot he is talking about. ABS light goes off after turning it back on, and the abs kicks in like it should. Seems to work just fine without restarting the car...

Have you guys tested this driving the car & locking up the brakes ? & then trening the ABS back on & slaming on the brakes again to see if the ABS is working.


Got any pics?
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Old 12-19-2007, 05:21 PM   #18
simon021
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Quote:
Originally Posted by zman519 View Post
Have you guys tested this driving the car & locking up the brakes ? & then trening the ABS back on & slaming on the brakes again to see if the ABS is working.


Got any pics?
Thats exactly what I did to test it.

ABS switch on- ABS light off - snowy driveway, ABS works fine
ABS switch off- ABS light on - snowy driveway, ABS does not work
ABS switch back on - ABS light goes off after a second, same driveway, abs works fine.

all without turning the car off or even stopping.

Am i missing something? It seems to work fine to me...
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Old 12-19-2007, 08:56 PM   #19
Feign
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He's talking about the 06, not anything prior.
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Old 12-19-2007, 10:48 PM   #20
quahog
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Quote:
Originally Posted by Feign View Post
He's talking about the 06, not anything prior.
The problem is that the original poster is following the scoobymods page which says to put the switch in-line with the ABS fuse in the fuse block, which does require shutting off the car. If you put the switch in-line with the ABS fuse located at the bottom of the relay block then it should work (at least it does on my 2002 and I've also read of it working on a 2004 STi).

Can anyone confirm this works on an '06?
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Old 12-19-2007, 11:34 PM   #21
shadyrex
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I tried it both ways when I posted this way back. The method that doesn't require turning the car off only seems to work on pre-06 cars.
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Old 12-20-2007, 09:55 AM   #22
zman519
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Cool

Quote:
Originally Posted by Feign View Post
He's talking about the 06, not anything prior.
WHO is "He"

Quote:
Originally Posted by simon021 View Post
Thats exactly what I did to test it.

ABS switch on- ABS light off - snowy driveway, ABS works fine
ABS switch off- ABS light on - snowy driveway, ABS does not work
ABS switch back on - ABS light goes off after a second, same driveway, abs works fine.

all without turning the car off or even stopping.

Am i missing something? It seems to work fine to me...

Sweet No your not missing any thing. Will be back with an update before Monday on how this works on a USDM MY03
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Old 12-29-2007, 10:29 PM   #23
zman519
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Quote:
Originally Posted by quahog View Post
On my 2002 RS (which will be the same as a WRX since the shop manual wiring section is the same) the fuse to put a switch inline with to disable/reenable without restarting the car is at the bottom of the relay block just to the immediate right of the fuse block under the dash. The fuse is the second from the right, red 10A in my car. There are openings for 4 fuses. My car only has the right two filled...so, it's the fuse in the 3rd opening.

I tested it the other morning while the car is running, once the fuse it put back in the ABS light goes out in about 1 second.

From looking at the schematic, the side you should splice into is the top wire at the back of the fuse (since this wire is the cold side when the fuse is out). The wire is labeled WB which I assume means white with a black stripe or maybe the opposite. The hot side should be white (for reference).

I take no responsibility for any damage to your car.

FYI this also works on USDM MY 03 WRX's
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Old 12-31-2007, 11:40 AM   #24
ride5000
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why don't you post the labeled purpose of the fuse?

not that i care myself--mine's been working fine for 4 years--but it might help others!

iirc it was an abs sensor relay or something subordinate to the main ABS system fuse, but i haven't had a fuse map in my car in a loooooong time.
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Old 12-31-2007, 05:50 PM   #25
zman519
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Quote:
Originally Posted by ride5000 View Post
why don't you post the labeled purpose of the fuse?

not that i care myself--mine's been working fine for 4 years--but it might help others!

iirc it was an abs sensor relay or something subordinate to the main ABS system fuse, but i haven't had a fuse map in my car in a loooooong time.

Ya your right i just forgot to take pics If some one has a pic of the fuse block area with the dash panel off PM it to me & i will Photoshop it up and post it in hear.
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