Electromagnetic Interference

The ABS components are sensitive to Electromagnetic Interference (EMI). Perform the following checks if an intermittent malfunction is suspected:
^ Check for proper installation of wiring harnesses resulting from add-on options.
^ Visually inspect the wheel speed sensor and the toothed ring for the following:
^ Visually inspect for looseness.
^ Visually inspect for damage.
^ Visually inspect for foreign material accumulation.
^ Visually inspect for proper mounting.
^ Replace any damaged components. Remove any foreign material and properly attach all components.
^ Check for proper routing of front wheel speed sensor wiring harness away from spark plug coils.
^ Monitor the scan tool wheel speeds while test driving the vehicle. Refer to the appropriate wheel speed DTC if any wheel speed drops or displays an erratic speed.