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troubleshooting ABS w/o scanner? V70-XC70 2004

Is there a way to troubleshoot the ABS without a scanner ? Can I look at the wheel sensors with an analog volt meter and see the signal ? Can I use a voltmeter set to AC to see the signal ? What other signals are in the system that needs to be checked before I decide the ABS module is bad ?

Mary said the ABS light went out today and when she stepped on the brakes, it felt like the ABS was engaging. Then the light came back on.

Rhetorical question: Since the car 'knows' whats wrong, why isn't there a button on the dash that will get it to tell me what the problem is ? It has that nifty little display that says it is time for service...

Points and carbs (well, one carb) is the way to go.

Greg








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    troubleshooting ABS w/o scanner? V70-XC70 2004

    Some things you can do - if applicable

    Check condition of wires to sensors - the wire to the right front of our '90 744 TI was worn half way through by its wide tires - I was able to reposition it in its holder to avoid further trouble.

    Check grounds around and for the ABS unit

    Examine and clean tone rings and sensors.

    Check and clean all connectors - my '90 744 TI had some under the hood, under the dash, and in the trunk.

    I never really found my problem, but I did get the ABS to work upon every startup and the light only came on about once every 5 trips or so - often when hitting a certain type of bump. It did work properly one snowy day when I REALLY needed it!
    --
    '96 855R,'64 PV544 driver, '67 P1800 basket case, '72 Yamaha Rd400, '68 Honda 350-4, '12 XC70, the first 5 are mine, heh, heh, 525,000 miles put on 10 bricks James A Sousa








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    troubleshooting ABS w/o scanner? V70-XC70 2004

    If you have a PC laptop (I don't), this is the way to go:

    http://www.professional-diagnostic-tool.com/volvo-scan-tool-p-87.html
    --
    My name is Klaus and I am a V♂lv♂holic







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