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Home >> Hyundai >> 2012 >> Genesis Coupe 2.0T, Automatic Trans >> Repair and Diagnosis >> Brakes >> Traction Control >> Electronic Stability Control (ESC) System >> DTC C1201: Wheel Speed Sensor Front-LH Range/Performance/Intermittent >> DTC Detecting Condition

DTC C1201: Wheel Speed Sensor Front-LH Range/Performance/Intermittent: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item Detecting Condition Possible cause
DTC Strategy
  • Signal monitoring
  • Improper installation of wheel speed sensor
  • Abnormal Rotor and wheel bearing
  • Faulty Wheel speed sensor
Enable Conditions Case 1
  • Max. wheel velocity exceeds 20km/h and the wheel velocity is 40% of max. wheel velocity. if this condition is lasted for 2 minutes.
  • Max. wheel velocity exceeds 40km/h and the wheel velocity is 60% of max. wheel velocity. if this condition is lasted for 2 minutes.
Case 2
  • Controller counts the number of the wheel acceleration of 100g[ (25km/h) for 7ms]. When the numbers at one wheel exceed 56 times, or When the numbers at more two wheels exceed 5 times, controller recognize the failure.
  • Controller counts the number of the wheel acceleration of 70g[ (17.5km/h) for 7ms]. When the numbers at one wheel exceed 126 times, or When the numbers at more two wheels exceed 20 times, controller recognize the failure.
  • Controller counts the number of the wheel deceleration of - 100g[ (-25km/h) for 7ms]. When the numbers at each wheel exceed 56 times, controller recognize the failure.
  • The wheel deceleration of -100g[ (-25km/h) for 7ms] causes the controller to start monitoring this failure and to compare the wheel velocity with the vehicle velocity from next cycle. When its difference of -100g is continued for more than 140msec, controller recognize the failure.
  • In case that any sensor failure at other wheel was already detected, When the numbers of 100g at each wheel exceed 5 times, or When the numbers of 70g at each wheel exceed 20 times, controller recognize the failure.
    • The counter of speed jump is cleared every 30min.
    • This monitoring is performed for the period that the velocity of each wheel exceeds 2km/h.
Fail Safe
  1. Only one wheel failure: Inhibit the ABS/ESC control, allow the EBD control. The ABS/ESC warning lamps are activated, the EBD warning lamp is not activated.
  2. More than two wheels failure: The ABS/EBD/ESC functions are inhibited. The ABS/EBD/ESC warning lamps are activated.
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