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Home >> Hyundai >> 2007 >> Santa Fe GLS, AWD, Standard >> Repair and Diagnosis >> Brakes >> Traction Control >> ESC (Electronic Stability Control) System >> Esp/ESC System >> DTC C1213 Wheel Speed Frequency Error >> Component Inspection

Component Inspection

  1. Lift the vehicle.
  2. Ignition "ON".
  3. Turn the wheel with hand.
  4. Measure waveform between terminal "1,2" of the wheel speed sensor harness connector and chassis ground.

    Specification :

    High : 1.05 V, Low : 0.525 V

    Compare waveforms of all wheel speed sensors.

    If they have same waveform, it is in normal condition.

    Fig 1: Measuring Waveform Between Terminal 1,2 Of Wheel Speed Sensor Harness Connector And Chassis Ground
    G05350752Courtesy of HYUNDAI MOTOR CO.
  5. Is the measured waveform within specifications?

    YES 

    • Fault is intermittent caused by poor connection in wheel speed sensor harness, Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Check following point at wheel speed sensor which has abnormal waveform.
    • 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.
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