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Home >> Hyundai >> 2021 >> Ioniq Hybrid SEL >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> ESC/AHB Diagnosis (HEV) >> DTC C1203-01: Wheel Speed Sensor Front-RH Open/Short >> Component Inspection >> Wheel speed sensor circuit check

Wheel speed sensor circuit check

  1. Lift the vehicle.
  2. IG "ON".
  3. Turn the wheel by hand.
  4. Measure waveform between signal terminal of the wheel speed sensor (FR) harness connector and chassis ground with oscilloscope.

    Specification:  High: 1.18 ~ 1.68V, Low: 0.59 ~ 0.84V

  5. Is the measured waveform within specifications?

    YES 

    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.