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HOMESERVICE MANUALSHYUNDAI2009SONATA SE, 3.3 FREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLESC (ELECTRONIC STABILITY CONTROL) SYSTEMTROUBLESHOOTING FOR DTCC1203 WHEEL SPEED SENSOR FRONT-RH OPEN/SHORTDTC DETECTING CONDITION
2009 Hyundai Sonata SE, 3.3 F

C1203 Wheel Speed Sensor Front-RH Open/Short: 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
  • Voltage monitoring
  • Open or short of Wheel speed sensor circuit (FR)
  • Faulty Wheel speed sensor (FR)
  • Faulty HECU
Case 1 Monitoring Period
  • Once after power up.
Enable Conditions
  • Shorts between WSS lines and shorts to UZ can be detected by switching single WSS channels in sequence. If there is an error after end of test, a failure is recognized.
Case2 Monitoring Period
  • Continuous
Enable Conditions
  • When the sensor current levels are out of permissible range (LOW: 7mA, HIGH : 14mA) for 200ms.
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.
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