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Home >> Genesis >> 2019 >> G70 2.0T Advanced, AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Electronic Stability Control Diagnosis >> DTC C1201-02: Wheel Speed Sensor Front-LH Range/Performance/Intermittent >> Component Inspection >> Wheel Speed Sensor Circuit Check

Wheel Speed Sensor Circuit Check

  1. Lift the vehicle.
  2. Turn "On" the ignition switch.
  3. Rotate the wheel slowly with hand.
  4. Measure waveform between signal terminal of the wheel speed sensor (Front Left) harness connector and chassis ground with oscilloscope.

    Specification: 

    High: Approximately 1.8 ~ 16.8 mA, Low: Approximately 5.9 ~ 8.4 mA (the current could be varied with battery voltage)

  5. Is the result within specifications?

    YES 

    • Fault can be intermittent, caused by poor connection in wheel speed sensor harness (Front Left) or external noise. Goto "Verification of Vehicle Repair" procedure.

    NO 

    • Check for improper installation of wheel speed sensor. If not good, repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • Check for damage of rotor teeth or wheel bearing. If not good, repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • Replace it with a new wheel speed sensor and see if it properly operates. If the problem is cleared, put the new wheel speed sensor in place and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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