Electromagnetic Interference (EMI)

Due to the sensitivity of ABS components to Electromagnetic Interference (EMI), the following checks should be performed if an intermittent malfunction is suspected.
- Check for proper installation of wiring harnesses resulting from add-on options.
- Visually inspect wheel speed sensor and toothed ring for looseness, damage, foreign material accumulation and proper mounting. Replace damaged components, remove any foreign material and properly attach all components.
- Check for proper routing of front wheel speed sensor wiring near spark plug wires.
- Using DMM J 39200, measure resistance of spark plug wires. If J 39200 displays Infinite or greater than 30,000 ohms for any wire, replace spark plug wires.
- While test driving vehicle, monitor scan tool wheel speeds. If any wheel speed drops or displays an erratic speed, refer to the appropriate wheel speed DTC.