Front ABS Sensors on Volvo V70 2005

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Front ABS Sensors on Volvo V70 2005

Post by Trademarkuk » Fri Dec 18, 2015 2:07 pm

Hi All,
Im a little confused why the front ABS signals appears so weak. My ABS lights up on the dashboard around 60mph. Please see the attached files. Any thoughts or guidance welcome. Regards Mark.
wheels rotating at 50rpm
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wheels rotating at 50rpm
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Re: Front ABS Sensors on Volvo V70 2005

Post by volrem » Sat Dec 19, 2015 8:42 am

Where do you measure and how is connection made? It seems that you measured ground wire.

Current signal is incorrect. This is MRE sensor and needs to have near battery voltage on one wire and 0V on other.

What does diagnosis tester shows (fault codes) and wheel speed live data? These tend to have broken ABS sensor wheels on driveshaft (can be replaced separately).

Attached good signal from 2005 S80
2005 S80 Front wheel speed sensor.psdata
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