Monitor Scantool Data

Engine "ON".
Connect scantool to Data Link Connector ( DLC).
Start and drive vehicle in gear and maintain vehicle speed is approx. 12km/h or more ( 7mph or more)
Monitor the "WHEEL SPD SENSOR-FL" parameter on the Scantool.
Specification: Approx. 12km/h or more ( 7mph or more)

Fig 1: Monitoring Front Wheel Spd Sensor-FL Parameter On Scantool
Courtesy of HYUNDAI MOTOR CO.

Fig 2: Signal Waveform Of Front Wheel Speed Sensor ( Low Speed Condition)
Courtesy of HYUNDAI MOTOR CO.

Normal Data

Normal waveform
Is parameter displayed within specifications?
YES
- Fault is intermittent caused by faulty HECU or external noise, was repaired and HECU memory was not cleared. Go to "COMPONENT INSPECTION " procedure.
NO
- Check for improper installation of wheel speed sensor. If NG, repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
- Check for damage of rotor teeth or wheel bearing. If NG, repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
- Substitute with a known-good Wheel speed sensor and check for proper operation. If problem is corrected, replace Wheel speed sensor and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
- If OK, Go to "COMPONENT INSPECTION " Procedure.