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HOMESERVICE MANUALSHYUNDAI2009SONATA SE, 3.3 FREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLESC (ELECTRONIC STABILITY CONTROL) SYSTEMTROUBLESHOOTING FOR DTCC1201 WHEEL SPEED SENSOR FRONT-LH RANGE / PERFORMANCE / INTERMITTENTDTC DETECTING CONDITION
2009 Hyundai Sonata SE, 3.3 F

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

2009 Hyundai Sonata SE, 3.3 FSECTION DTC Detecting Condition
DTC DETECTING CONDITION AND POSSIBLE CAUSE

Item Detecting Condition Possible cause
DTC Strategy
  • Signal monitoring
  • Improper installation of wheel speed sensor
  • Abnormal Rotor and wheel bearing
  • Faulty Wheel speed sensor (FL)
  • Faulty HECU
Case 1 Monitoring Period
  • The monitoring is active from 10 km/h to 60km/h and if no ABS-control is active at a front wheel and a rear wheel.
Enable Conditions
  • Every time, if a gap in the wheel speed sensor signal occurs cyclically with one wheel rotation, a fault counter is increased by one. If the fault counter exceeds its limit of 10, a wheel specific fault is stored in the EEPROM.
Case2 Monitoring Period
  • Continuous
Enable Conditions
  • If following interference and signal disturbance is detected, a failure is set after 10s.
    • non-plausible high frequency received.
    • non-plausible high wheel acceleration.
    • non-plausible high wheel jurk.
    • non-plausible delta T and edges at low speed.
Fail Safe
  • Sensor failure outside of the ABS control cycle
    1. Only one wheel failure : Only the ABS/ESC functions are inhibited. The ABS/ESC warning lamps are activated and the EBD warning lamp is not activated.
    2. Two wheels failure : Only the ABS/ESC functions are inhibited. The ABS/ESC warning lamps are activated and the EBD warning lamp is not activated.
    3. More than 3 wheels failure : System down. The ABS/EBD/ESC functions are inhibited. The ABS/EBD/ESC warning lamps are activated.
  • Sensor failure inside the ABS control cycle
    1. One front wheel failure : Inhibit the ABS/ESC control. Pressure is increased on a front wheel, Pressure is decreased on a rear wheel. After the ABS/ESC control, the ABS/ESC functions are inhibited. The ABS/ESC warning lamps are activated and the EBD warning lamp is not activated.
    2. Two wheels failure : Inhibit the ABS/ESC control. Pressure is increased on a front wheel, Pressure is decreased on a rear wheel. After the ABS/ESC control, the ABS/ESC functions are inhibited. The ABS/ESC warning lamps are activated and the EBD warning lamp is not activated.
RENDER: 1.0x

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