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ABS issues

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

98S70T5
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Year and Model: 1998 S70 T-5
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98S70T5

ABS issues

Post by 98S70T5 » Mon Nov 25, 2019 7:44 am

Guys, the ABS light started coming on a week ago in my 98 S70. At first it wouldn't come on until 5-7 mph or so. Now it's just on solid. I was hoping it was a wheel speed sensor based on that. The front two ohm tested ok but it looks like the rears have long wires that go up inside the car. I took the pass through plate off that's over the fuel tank lines (maybe pump). Didn't see a plug there but ran out of time before I could take the passenger side trunk panel out to chase the wires further.

Just looking to see if I am barking up the right tree for the location of the plugs for the rear wheel speed sensors. Haven't been around a OBD tool to hook up and check the ABS codes yet.

It's starting to make ABS noises if you turn fairly spiritedly at 10-20 mph while on the brakes in either direction now.



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abscate
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Re: ABS issues

Post by abscate » Mon Nov 25, 2019 8:08 am

There is a parts change around 1998 when the rear abs harness went from two wires to a one wire harness

You will have to confirm part numbers by comparison or by VIN

I did a DIY with pictures in my 1999 T5, the thread is referenced in my maintenance thread, forum link in my sig


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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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98S70T5
Posts: 35
Joined: Tue Nov 27, 2018 11:55 am
Year and Model: 1998 S70 T-5
Location: IN
Has thanked: 0
Been thanked: 1 time
United States of America
98S70T5

Re: ABS issues

Post by 98S70T5 » Mon Nov 25, 2019 8:23 am

Cool, thanks for the info. You can see two harnesses going up over the rear axles and disappearing.



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