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Author Topic: ABS unit will not turn off  (Read 388 times)

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MercuryFree

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ABS unit will not turn off
« on: April 30, 2010, 10:00:33 pm »
So i was just driving along and my abs warning light goes on, gave the brakes a few testing activations and they worked so that's a bonus, but upon turning the car off, the abs unit/pump thing stays on. Full bore. Nothing short of yanking the battery fixes this (as I don't know what fuse to pull as it's in japanese).

  • Is it f***ed?
  • Is there anything I can try to remedy this
  • which fuse do I pull? :D

97 jdm wrx wagon.

Hopefully somebody's awake...:P
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1997 v3 wrx wagon. STi brakes, bonnet, swaybars, springs.
Vf22, boost controller, boost gauge. Broken c-west front kit. SSR 16x7

boostin

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Re: ABS unit will not turn off
« Reply #1 on: April 30, 2010, 10:06:11 pm »
Give the ABS pump a tap. Sounds like a sticking relay. It will drain your battery pretty quick if you leave it.
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MercuryFree

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Re: ABS unit will not turn off
« Reply #2 on: April 30, 2010, 10:08:57 pm »
Quote from: boostin on April 30, 2010, 10:06:11 pm
Give the ABS pump a tap. Sounds like a sticking relay. It will drain your battery pretty quick if you leave it.
Yeah it's sitting with the battery unplugged atm so as to not do what everyone else with this problem on the internet did haha.

By 'tap' do you mean grab a wrench and tap the side/top of the pump with it? Just checking before I go whacking things :P
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1997 v3 wrx wagon. STi brakes, bonnet, swaybars, springs.
Vf22, boost controller, boost gauge. Broken c-west front kit. SSR 16x7

boostin

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Re: ABS unit will not turn off
« Reply #3 on: April 30, 2010, 10:10:44 pm »
Yup, just need to shock the relay into releasing. Start with light taps and work up to bigger. Maybe use a piece of wood so you don't damage the pump.
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MercuryFree

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Re: ABS unit will not turn off
« Reply #4 on: April 30, 2010, 10:24:40 pm »
Quote from: boostin on April 30, 2010, 10:10:44 pm
Yup, just need to shock the relay into releasing. Start with light taps and work up to bigger. Maybe use a piece of wood so you don't damage the pump.
It kind of works, turned it mainly off but was still making a little bit of noise, if I hit it again it goes off for about 2 seconds and then starts up again (albeit to a much lesser extent than before)...should I hit it harder?  ;D
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1997 v3 wrx wagon. STi brakes, bonnet, swaybars, springs.
Vf22, boost controller, boost gauge. Broken c-west front kit. SSR 16x7

Swindog

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Re: ABS unit will not turn off
« Reply #5 on: April 30, 2010, 10:26:02 pm »
HOw much brake fluid do you have in your master?
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aim

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Re: ABS unit will not turn off
« Reply #6 on: April 30, 2010, 10:31:26 pm »
Quote from: MercuryFree on April 30, 2010, 10:24:40 pm
should I hit it harder?  ;D

You most definitely should! I have mental images you you whacking your pump with a plank of 2x4 XD
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Quote from: boostcut on March 17, 2010, 08:42:23 pm
you use it to create a vacuum... rather than sucking a black hose off.

boostin

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Re: ABS unit will not turn off
« Reply #7 on: April 30, 2010, 10:36:27 pm »
It sounds knackered then. I would look at getting a replacement.
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MercuryFree

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Re: ABS unit will not turn off
« Reply #8 on: April 30, 2010, 10:39:32 pm »
Quote from: Swindog on April 30, 2010, 10:26:02 pm
HOw much brake fluid do you have in your master?
First thing I checked, fluid level is normal
Quote from: boostin on April 30, 2010, 10:36:27 pm
It sounds knackered then. I would look at getting a replacement.
Just the relay or the entire pump?
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1997 v3 wrx wagon. STi brakes, bonnet, swaybars, springs.
Vf22, boost controller, boost gauge. Broken c-west front kit. SSR 16x7

ClubSub Dad

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Re: ABS unit will not turn off
« Reply #9 on: April 30, 2010, 11:15:42 pm »
Found this article on page 20

http://ken-gilbert.com/wrx/mans/99-01%20impreza%20service%20manuals/Mechanism%20and%20Function.pdf
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boostin

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Re: ABS unit will not turn off
« Reply #10 on: May 01, 2010, 02:09:57 pm »
Quote from: hotspurz on April 30, 2010, 11:15:42 pm
Found this article on page 20

http://ken-gilbert.com/wrx/mans/99-01%20impreza%20service%20manuals/Mechanism%20and%20Function.pdf

Huh?? Evaporative control?? Methinks you post the wrong link....
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MercuryFree

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Re: ABS unit will not turn off
« Reply #11 on: May 01, 2010, 02:23:23 pm »
Quote from: boostin on May 01, 2010, 02:09:57 pm
Quote from: hotspurz on April 30, 2010, 11:15:42 pm
Found this article on page 20

http://ken-gilbert.com/wrx/mans/99-01%20impreza%20service%20manuals/Mechanism%20and%20Function.pdf

Huh?? Evaporative control?? Methinks you post the wrong link....
Should I just be looking at getting a new relay to start with or just get a whole abs unit?
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1997 v3 wrx wagon. STi brakes, bonnet, swaybars, springs.
Vf22, boost controller, boost gauge. Broken c-west front kit. SSR 16x7

ClubSub Dad

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Re: ABS unit will not turn off
« Reply #12 on: May 01, 2010, 02:36:19 pm »
Thanks Boostin, correction. Page 20 of section 4, actual page of pdf is 244.
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MercuryFree

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Re: ABS unit will not turn off
« Reply #13 on: May 01, 2010, 03:12:26 pm »
Quote from: hotspurz on May 01, 2010, 02:36:19 pm
Thanks Boostin, correction. Page 20 of section 4, actual page of pdf is 244.
There was a diagram and 'how it works' but no actual useful troubleshooting information :P. Thanks anyway though
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1997 v3 wrx wagon. STi brakes, bonnet, swaybars, springs.
Vf22, boost controller, boost gauge. Broken c-west front kit. SSR 16x7

boostin

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Re: ABS unit will not turn off
« Reply #14 on: May 01, 2010, 06:07:28 pm »
Try pulling the relay out and see if it turns off.
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