Do it yourself ABS module repair.

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.
1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70
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BKM98 S70 T5
Posts: 1374
Joined: Mon Jan 16, 2012 1:47 am
Year and Model: S70 T5 98
Location: CA

Re: Do it yourself ABS module repair.

Postby BKM98 S70 T5 » Tue Apr 10, 2012 1:28 am

pigeonbaz wrote:Hi finally sused this quick fix out useing a piece of plastic knife works fine up to now many thanks yours new member from England.


Matty Moo wrote:Please don't tell us you jammed a piece of plastic knife in there to "fix" it. I cringe every time I hear of somebody doing that.


If you used the wedge trick you are just bending the circuit board to make contact with the broken solder joints. The joints need to be soldered! if you were in any accident you could be liable for making your car less safe than it could have been regardless of... Regret, especially if you or a loved one were injured. The cost is minor if negligible for the importance and safe full functionality of the ABS system.

Blessings,
BKM
-

Matty Moo
Posts: 1692
Joined: Mon Oct 13, 2008 3:38 am
Year and Model: 850, 1996
Location: Ann Arbor, MI
Flag: United States of America

Re: Do it yourself ABS module repair.

Postby Matty Moo » Tue Apr 10, 2012 5:03 am

stevedud wrote:I have a 2000 S80 where the ABS and SRS lights are one and the cruise control is out.

Can this procedure be used on it?

I have a 15 watts soldering iron. Will it do for this repair?


Depends on which part number it has. if it has an 8619538 unit in it I would definitely get it scanned first, which you should anyway since your srs light is on.
Image
http://www.midwest-abs.com
Simplycleanpowerwash.com

1996 850 Platinum Wagon. ARD Green Tune, OBX.-Gone
1998 S70 ARD tune, EST exhaust, SE/R interior.
1999 S70 Plain Jane.
2000 S70 GLT
2014 Ram
2012 Jeep Wrangler Unlimited

notfadeaway
Posts: 33
Joined: Sun Mar 11, 2012 10:59 pm
Year and Model: 1999 XC 70
Location: syracuse

Re: Do it yourself ABS module repair.

Postby notfadeaway » Tue Apr 10, 2012 6:31 pm

didn't work sent perharps something else in the system sent the other one back to you today

Matty Moo
Posts: 1692
Joined: Mon Oct 13, 2008 3:38 am
Year and Model: 850, 1996
Location: Ann Arbor, MI
Flag: United States of America

Re: Do it yourself ABS module repair.

Postby Matty Moo » Tue Apr 10, 2012 10:03 pm

notfadeaway wrote:didn't work sent perharps something else in the system sent the other one back to you today


Email or call me...email goes to my phone which is always on me. I'm not on the forums throughout the day and can't respond instantly. I also can't keep track of forum screen names and who I sent something to.
Image
http://www.midwest-abs.com
Simplycleanpowerwash.com

1996 850 Platinum Wagon. ARD Green Tune, OBX.-Gone
1998 S70 ARD tune, EST exhaust, SE/R interior.
1999 S70 Plain Jane.
2000 S70 GLT
2014 Ram
2012 Jeep Wrangler Unlimited

stevedud
Posts: 7
Joined: Fri Jul 01, 2011 1:44 am
Year and Model: S80 2000
Location: New Jersey

Re: Do it yourself ABS module repair.

Postby stevedud » Sun Apr 22, 2012 10:52 pm

Looking for some help. We have a 2000 S80.

Finally took a good look at the symptoms we are having.
Message-ABS BRAKE SERVICE REQUIRED
Orange triangle with explanation ! Point inside of it on
Red ABS letters on in right box
Red triangle with car skidding on in right box
Occasionally get STC light on
Cruise control sometimes works, sometimes not

The control unit I have has these markings
Control Unit ABS/STC a 6840 above the word STC
9496946 above the word control
346946 below the word STC
10-0949-0420 under the word Control

I guess my choices are
fix it myself
I found a guy who is parting out the same year, if he has the exact numbers, I can get it for $50
Send it out to get fixed but I'll have to wait for the return
Buy an already repaired one and send mine back as core. Should I worry about not using my exact one?

Please help decide what to do..

User avatar
BKM98 S70 T5
Posts: 1374
Joined: Mon Jan 16, 2012 1:47 am
Year and Model: S70 T5 98
Location: CA

Re: Do it yourself ABS module repair.

Postby BKM98 S70 T5 » Sun Apr 22, 2012 10:59 pm

stevedud wrote:Looking for some help. We have a 2000 S80.

I found a guy who is parting out the same year, if he has the exact numbers, I can get it for $50
Send it out to get fixed but I'll have to wait for the return
Buy an already repaired one and send mine back as core. Should I worry about not using my exact one?

Please help decide what to do..


I think you'll be better off to "Buy an already repaired one and send mine back as core". You do not need an exact one! God forbid you were in a fender bender (someone else's fault off course) you may think to yourself had the Module been in car perhaps...

Blessings,
BKM
-

Matty Moo
Posts: 1692
Joined: Mon Oct 13, 2008 3:38 am
Year and Model: 850, 1996
Location: Ann Arbor, MI
Flag: United States of America

Re: Do it yourself ABS module repair.

Postby Matty Moo » Sun Apr 22, 2012 11:27 pm

stevedud wrote:Looking for some help. We have a 2000 S80.

Finally took a good look at the symptoms we are having.
Message-ABS BRAKE SERVICE REQUIRED
Orange triangle with explanation ! Point inside of it on
Red ABS letters on in right box
Red triangle with car skidding on in right box
Occasionally get STC light on
Cruise control sometimes works, sometimes not

The control unit I have has these markings
Control Unit ABS/STC a 6840 above the word STC
9496946 above the word control
346946 below the word STC
10-0949-0420 under the word Control

I guess my choices are
fix it myself
I found a guy who is parting out the same year, if he has the exact numbers, I can get it for $50
Send it out to get fixed but I'll have to wait for the return
Buy an already repaired one and send mine back as core. Should I worry about not using my exact one?

Please help decide what to do..


You CANNOT swap in a different unit. Your's is mated to your car.
Image
http://www.midwest-abs.com
Simplycleanpowerwash.com

1996 850 Platinum Wagon. ARD Green Tune, OBX.-Gone
1998 S70 ARD tune, EST exhaust, SE/R interior.
1999 S70 Plain Jane.
2000 S70 GLT
2014 Ram
2012 Jeep Wrangler Unlimited

User avatar
BKM98 S70 T5
Posts: 1374
Joined: Mon Jan 16, 2012 1:47 am
Year and Model: S70 T5 98
Location: CA

Re: Do it yourself ABS module repair.

Postby BKM98 S70 T5 » Sun Apr 22, 2012 11:37 pm

Matty Moo wrote:
stevedud wrote:Looking for some help. We have a 2000 S80.

You CANNOT swap in a different unit. Your's is mated to your car.


Thank you Matty Moo!

Blessings,
BKM
-

wysiwyg
Posts: 4
Joined: Tue Apr 24, 2012 9:34 pm
Year and Model: 1997
Location: Newark, UK

Re: Do it yourself ABS module repair.

Postby wysiwyg » Tue Apr 24, 2012 9:44 pm

Hi, first time poster, long time reader ;)
Ive got the unit off open and have resoldered the two main power pins. Ive checked all the other pins have continuity and are connecting the board with a multi meter, and everything looks dandy, but still got tracs and abs light on and cant turn tracs on or off.

The pins ive tested are all the fully thru legs to either the board track or each other if in pairs.

Is there anything im missing or what other things could cause this that im missing? Really should read the codes i spose..

Matty Moo
Posts: 1692
Joined: Mon Oct 13, 2008 3:38 am
Year and Model: 850, 1996
Location: Ann Arbor, MI
Flag: United States of America

Re: Do it yourself ABS module repair.

Postby Matty Moo » Wed Apr 25, 2012 7:22 pm

You have to solder those too. They're a solid pin from where the harness plugs in to where it comes out of the circuit board so you're going to get continuity no matter what. They crack at their connection at the circuit board.
Image
http://www.midwest-abs.com
Simplycleanpowerwash.com

1996 850 Platinum Wagon. ARD Green Tune, OBX.-Gone
1998 S70 ARD tune, EST exhaust, SE/R interior.
1999 S70 Plain Jane.
2000 S70 GLT
2014 Ram
2012 Jeep Wrangler Unlimited


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