SsangYong Korando III (2010 year). Service manual — part 234
10-3
4890-00
1. SPECIFICATION
Unit
Description
Specification
ABS
ESP
HECU
Clock frequency
32 MHz
50 MHz
Memory
128 KB
512 KB
Switch
Orifice
Orifice
Wheel speed
sensor
ABS / ESP
CBS
Operating temperature
- 40°C to 150°C
- 40°C to 150°C
- 40°C to 115°C
- 40°C to 115°C
Operating frequency
1 to 2,500 Hz
1 to 8,000 Hz
Operating voltage
4.5 to 16 V
3.3 to 18 V
G-sensor
ABS
CBS / ESP
Operating voltage
4.75 to 5.25 V
N/A
Operating temperature
- 30°C to 85°C
Operating range
-1.5 to 1.5 g
Output voltage
0.5 to 4.5 V
10-4
ABS / ESP
CBS
Circuit diagram of wheel speed sensor
▶
10-5
4890-00
1. SYSTEM OVERVIEW
1) What is ABS?
When braking suddenly or braking on slippery roads, the vehicle keeps moving forward but the wheels
are locking and not rotating. If these happen, the vehicle may lose stability or rotate resulting in an
accident. ABS helps to maintain directional stability and control of the vehicle. ABS is designed to
secure more safety and increase the control of steering wheel during emergency braking situation. But,
ABS does not guarantee perfect safety beyond its physical limit. ABS in this vehicle contains EBD
function. In normal driving conditions, the brake system operates without ABS function.
2) What is EBD (Electronic Brake-force Distribution)?
EBD is an automobile brake technology that automatically varies the amount of force applied to each of a
vehicle's brakes, based on road conditions, speed, loading, etc. Always coupled with anti-lock braking
systems, EBD can apply more or less braking pressure to each wheel in order to maximize stopping
power whilst maintaining vehicular control. EBD does not operate when ABS is working.
ABS effect according to braking conditions
▶
Braking on split road
Maneuvering while braking
10-6
3. G-sensor (for 4WD)
Located on the floor under
parking brake bracket in center
console.
4. Rear wheel speed sensor
(for 2WD)
Located on knuckle. The
appearance is different from that
for 4WD.
4. Wheel speed sensor
(for 4WD)
Located on knuckle. The
appearance of front sensor is
same with rear sensor.
2. ABS warning lamp
EBD warning lamp (ABS warning lamp +
Brake warning lamp)
1. ABS hydraulic device and control unit
Located under the power steering fluid reservoir and
contains the pressure sensor.
2. COMPONENT
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