Front and Rear Wheel Speed Sensor Inspection
WARNING: This page is about a different car, the 2010 Suzuki Kizashi. However, it is still accessible from the selected car via links, so may be relevant.
Reference: FRONT WHEEL SPEED SENSOR REMOVAL AND INSTALLATION
Reference: REAR WHEEL SPEED SENSOR REMOVAL AND INSTALLATION
Replace or clean the wheel speed sensor if detective area of wheel speed sensor is damaged or covered with iron powder.