S70 L5-2.4L VIN 61 B5244S (2000)
Wheel Speed Sensor: Description and Operation
ABS wheel sensor wiring -January 1996
Customers have complained that the brake pedals in model year 1996 cars pulse, and that there is some noise, when braking at low speeds. However,
no reduction in braking performance or other faults have been reported. If the above occurs, it is due to the ABS system carrying out a self-diagnosis
at low speed, which can be a result of high resistance in one of 4 cable splices in the front wheel sensor cable harness. The cables have a thin plastic
film on the inside of the insulation to make them more flexible, and there may be a residue of this plastic film in the cable splice crimp. The wiring has
been remedied in production from February 1996. The correct material, and cars that have been remedied, are marked with a green dot (decal or paint)
under the fusebox cover on the white edge of the integrated relay/fusebox. This Service Bulletin describes how to cut and re-splice suspect cable
splices.
After re-splicing the ABS system should be tested according.
Replacing wiring (not natural gas powered cars)
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Place the new cables (A and B) on the gutter.
Note: Right-hand wiring (A=long). Left-hand wiring (B=short).
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Cut off the old wiring at the wiring ducts.
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Remove cables from the clips.
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Tape the old and new ABS cables together, first (A) then (B), so that the new cable can be pulled through by the old cable.
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Raise the car.
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Remove front wheels
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Remove ABS cable from ABS sensor at the front wheels.
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Remove ABS cable from bracket and from clip.
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Carefully pull cable so that new cable is pulled through with the old cable.
Caution: The new ABS cable must be as long as the old one.
