Monitor Scantool Data

Engine "ON".
Connect scantool to Data Link Connector (DLC).
Start and drive vehicle in gear and maintain vehicle speed is approx. 10km/h or more (6mph or more)
Monitor the "WHEEL SPD SENSOR" parameter on the Scantool.
Specification : Compare with another parameters related to wheel speed sensor.

If it is the same as another parameters, it is in normal condition.

Fig 1: Scan Tool Display - Wheel Speed Sensor (31.0 MPH)
Courtesy of HYUNDAI MOTOR CO.

Fig 1) Test Condition: Drive vehicle at a speed of 50 km/h or more. (31 mph or more)

Normal Data

Fig 2) Test Condition : Drive vehicle at a speed of 51km/h or more. (31mph or more)

Normal wave
Is parameter displayed within specifications?
YES
- Fault is intermittent caused by poor connection in wheel speed sensor harness and/or HECU's connector or 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.