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HOMESERVICE MANUALSKIA2010RONDO LX, 2.7 6REPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEM/ELECTRONIC STABILITY CONTROL (ABS/ESC) DIAGNOSISDTC C1201: WHEEL SPEED SENSOR FRONT-LH RANGE - PERFORMANCE - INTERMITTENTGENERAL INFORMATIONDTC DETECTING CONDITION
2010 Kia Rondo LX, 2.7 6

General Information: DTC Detecting Condition

2010 Kia Rondo LX, 2.7 6SECTION DTC Detecting Condition
DTC C1201 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 (FL)
  • Faulty HECU
Detect Mode
  • Outside the ABS control cycle
  • Inside the ABS control cycle
  • Diagnosis mode
  • Failure mode
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Enable Conditions Case1 (Wrong Exciter)
  • Max. wheel velocity exceeds 20 km/h (12.4 mph) and the wheel velocity is 40% of max. wheel velocity. if this condition is lasted for 2 minutes.
  • Max. wheel velocity exceeds 40 km/h (24.9 mph) and the wheel velocity is 60% of max. wheel velocity. if this condition is lasted for 2 minutes.
Case2 (Speed Jump)
  • Controller counts the number of the wheel acceleration of 100g[ (25 km/h (15.5 mph)) 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[ (17.5 km/h (10.9 mph)) 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[ (- 25 km/h (15.5 mph)) for 7ms]. When the numbers at each wheel exceed 56 times, controller recognize the failure.
  • The wheel deceleration of ?100g[ (-25 km/h (15.5 mph)) 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 30 min.
    • This monitoring is performed for the period that the velocity of each wheel exceeds 2 km/h (1.2 mph).
 -
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. More than two wheels failure : System down. The ABS/EBD/ESC functions are inhibited. The valve relay and all solenoids are prevented from being switched on. 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 of the failed-wheel and maintain the ABS/ESC control of normal 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. Failure at one rear wheel : ABS/ESC control of both front wheels are inhibited and the pressure of both rear wheels are decreased. After the controller completes 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.
    3. More than 2 wheels failure : System down. The ABS/EBD/ESC functions are inhibited. The valve relay and all solenoids are prevented from being switched on. The ABS/EBD/ESC warning lamps are activated.
RENDER: 1.0x

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