| DTC Strategy |
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- Improper installation of wheel speed sensor
- Abnormal Rotor and wheel bearing
- Faulty Wheel speed sensor (FL)
- External noise
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| Case 1 (WSS signal monitoring on driving) |
Monitoring Period |
- Continuous monitoring over 40kph (24.9mph) of vehicle speed
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| Threshold Value |
- When one or more wheels are under 2.75kph (1.7mph) and the vehicle speed is above 40kph for more than 300ms.
- If wheel speed sensor failure is detected during no control, it stops control immediately
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| Case 2 (WSS invalid signal monitoring) |
Monitoring Period |
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| Threshold Value |
- If following interference and signal disturbance is detected
- Invalid signal (wheel speed changes over ±100g) occurs while brake pedal is pushed (fault monitoring duration: 20s)
- Invalid signal (wheel speed changes over ±100g) occurs while brake pedal is not pushed (fault monitoring duration: 5s)
- Invalid signal (wheel speed changes over ±100g) occurs to three or more wheels (fault monitoring duration: 1s)
- If wheel speed sensor failure is detected during no control, it stops control immediately
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| Fail Safe |
- One or two wheel speed sensor fault
- Only the ABS/ESP (ESC) functions are inhibited
- The ABS/ESP (ESC) warning lamps are activated and the EBD warning lamp is not activated
- More than 2 wheel speed sensor fault
- The ABS/EBD/ESP (ESC) functions are inhibited
- The ABS/EBD/ESP (ESC) warning lamps are activated
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