SSANGYONG Kyron Repair Manual page 457

AWSS: Active Wheel Speed Sensor
The speed sensor used in traditional ABS is made of permanent magnet and transmits the output voltage that
changes as the wheel rotor rotates to the HECU system. New wheel speed sensor detects the wheel speed
through the current value that depends on the resistance that changes according to the magnetic field by using
four resisters and supplying the 12 V power supply to the sensor.
<Front wheel speed sensor>
<Active wheel speed sensor>
This sensor contains:
1. Four resistance
The system uses the wheatstone bridge that detects and compares the changes in each resistance value. Before
passing through the comparison measuring device, the sine wave current is obtained. But, after passing through it,
a square wave, that is recognized by ECU, will be generated.
Specification
Air gap between sensor and rotor
Wheel speed sensor current
(vehicle speed: at approx. 2.75 Km/h)
Wheel speed sensor voltage
(one rotation per a second at -40 ~ +60)
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
2. Supply voltage from HECU (12 V)
Front:
Rear:
<Rear wheel speed sensor>
<Wheatstone bridge type>
3. Internal printed circuit board
2WD: 0.475 ~ 1.453 mm (Tightening torque: 6 ~ 8 Nm)
4WD: 0.1 ~ 0.7 mm (Tightening torque: 15 ~ 20 Nm)
0.037 ~1.175 mm (5-link suspension)
0.489 ~1.039 mm (Independent suspension)
71
4890
I : Approx. 14 mA
HIGH
I : Approx. 7 mA
LOW
7.5 ~ 20 V
ABS/ESP SYSTEM
KYRON SM - 2005.09