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99 s70 abs check engine light Topic is solved

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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royzmvslogin
Posts: 5
Joined: 5 February 2019
Year and Model: 1999 s70
Location: st.charles mo.

99 s70 abs check engine light

Post by royzmvslogin »

this is my first trip to your forum there seems to as much or more misinformation than good information on other sites one place says you can test sensors with ohm meter other place says these should be tested with wheels turning on ac volts tried ac check got 0 volts tried ohm test got 0 should it be assumed sensors are bad

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misha
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Post by misha »

You can test them both ways.
If you get 0 Ohms when wheel is stationary or O Volts when wheel is rotated ...then that sensor is dead.

I take it that you measured that directly on sensor's connector.

Please use interpunction signs in writing,since it is a bit hard to read what you wrote.
Last edited by misha on 23 Feb 2019, 15:50, edited 1 time in total.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

royzmvslogin
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Joined: 5 February 2019
Year and Model: 1999 s70
Location: st.charles mo.

Post by royzmvslogin »

yes I did. thank you for the reply misha.

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misha
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Post by misha »

There was some topic here on MVS about a week or so about abs sensors.
I think that they mentioned that cheap aftermarket ones will not work.
If you go aftermarket...go with reputable brands.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

royzmvslogin
Posts: 5
Joined: 5 February 2019
Year and Model: 1999 s70
Location: st.charles mo.

Post by royzmvslogin »

checking on amazon some low some high. thanks for response.

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misha
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Post by misha »

You will need ATE sensors if the car is equipped with ATE abs system.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

royzmvslogin
Posts: 5
Joined: 5 February 2019
Year and Model: 1999 s70
Location: st.charles mo.

Post by royzmvslogin »

it is . thank you.

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abscate
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Post by abscate »

Disconnect the sensor at the suspension strut. Pull the plug apart, and ch3ck the resistance at that plug, it should be 1200-1500 Ohms. They rarely go bad, other than damaged wires. Sometimes the tone ring hits them which will causeABS errors
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
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precopster
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Post by precopster »

Most likely a front left ABS sensor fault will be a ABS module error.

There's a couple good write-ups here on how to do a top class solder repair to the ABS circuit board or just send it to Matty Moo at Midwest ABS.
Current cars VW Transporter 2.5TDI, 2010 XC90 D5 R Design

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abscate
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Post by abscate »

Misha and all others..thanks for reminding folks that we keep our post standards of writing And punctuation high here on MVS.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread

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