Wheel Speed Sensors (WSS)

Measure WSS air gap in at least 4 places. Front WSS air gap should be .016-.051" (.40-1.30 mm), rear WSS air gap should be .011-.059" (.28-1.5 mm). Front WSS air gap is not adjustable. If front WSS air gap is out of adjustment, it is either loose or damaged. Tighten or replace front WSS as necessary. See FRONT WHEEL SPEED SENSOR  under REMOVAL & INSTALLATION. For rear WSS adjustment procedure, see REAR WHEEL SPEED SENSOR  under REMOVAL & INSTALLATION.