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ABS fault code 4-4-4 need help 850 1994

Greetings,
have 94 850 turbo sedan, have check eng. light code from socket A, position 3,
4-4-4 no pwr to hydraulic unit and code 1-4-1 faulty pedal sensor.i checked pedal sensor ( one w/o the vacuum linehope thats correct)and chks good,opens and closes w ohm meter ok. found relay module in engine compartment , took apart and chked relays and contact spray and chk w. meter ok, diodes ok also.
dont have schematic in haynes module, but chk resistance to abs motor and have dead short(assuming 2 heavy guage wires are leads to motor) Is motor NG?? or look elsewhere, fuses are good. do these abs motors fail ?? expensive??
any help appreciated,
thanks,
Frank D, south FL
94 850 turb0, 92 940 Turbo








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    ABS fault code 4-4-4 need help 850 1994

    I have the same problem since several month. When time to break hard, ABS seems to work but not as is supposed to... Still trying to find what it is... Can it be a relay? Which relay?

    Bruno








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    ABS fault code 4-4-4 need help 850 1994

    Is that a permanent fault code, re-appears after clearing and ABS light still on after a test drive (over 20 mph), ABS thus inop?

    I'd suspect a faulty relay before assuming the VERY costly pump is NG. I have yet to see a bad pump unit.








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      ABS fault code 4-4-4 need help 850 1994

      greetings,
      only chk eng light comes on 2minutes, abs light has not come on (except for start up)i dont think the abs works as i have not noticed a pulsing or motor running etc. etc.didnt find any other codes in other "A" sockets. i will chk directly to abs motor w. 12v and see if it runs. wife complained the other day that car skidded in rain it rains almost every day in summer down here, any help appreciated,
      thks,
      Frank d , south FL








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        ABS fault code 4-4-4 need help 850 1994

        Frank,
        If you are interested in getting good schematics and diagnostic info for the 850, contact me directly.
        TomL77@att.net
        --
        Tom 69-1800S, 72-1800ES, 96-850T







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