Component Inspection

Wheel Speed Sensor circuit check
1. Lift the vehicle.
2. Ignition "ON"& Engine "OFF".
3. Turn the wheel by hand.
4. Measure waveform between signal terminal of the Wheel Speed Sensor harness connector and chassis ground with oscilloscope.
  Specification : High : 1.18~1.68V, Low : 0.59~0.84V
  
  Fig 1: Measuring Waveform Between Signal Terminal Of Wheel Speed Sensor & Chassis Ground With Oscilloscope
  Courtesy of KIA MOTORS AMERICA, INC.
5. Is the measured waveform within specifications?
  YES
  - Fault is intermittent, caused by poor connection in Wheel Speed Sensor harness (RL). Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - 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.