2013 SSANGYONG KORANDO 4WD

1. OVERVIEW
The AWD system in this vehicle is the electronic 4WD system and controls the traction to rear wheels
according to the driving conditions.
1) Driving Mode
(1) AUTO mode (Normal driving mode)
Normally the vehicle is in 2WD mode.
Automatically change to this mode when the vehicle needs higher traction.
(2) LOCK mode (when pressing 4WD LOCK switch)
This mode provides the highest traction. Use
this mode when driving on unpaved, rugged,
steep, sandy, wet or slippery roads.
In 4WD LOCK mode, if the rear wheel speed
exceeds 40 km/h, 4WD LOCK mode is
canceled and 4WD AUTO mode is activated
(Indicator OFF). If the speed is decreased
below 35 km/h, 4WD LOCK mode is resumed
(Indicator ON again). -
-
Mode table
4WD LOCK switch Vehicle speed Driving mode
Not pressed (4WD AUTO) No conditions 4WD AUTO
Pressed (4WD LOCK) over 40 km/h 4WD AUTO
Pressed (4WD LOCK) below 35 km/h 4WD LOCK

3) Parts Arrangement
Part nameVehicle with
CBSVehicle with ABS/EBDVehicle with
ESP
HECU
Not appliedAppliedApplied Front wheel speed sensor
Rear wheel speed sensor
ABS warning lamp
EBD indicator
Longitudinal G sensor 2WD: N/A, 4WD: Applied Not applied
Sensor cluster
(Yaw rate sensor,
lateral/longitudinal G sensor)
Not applied Applied
ESP indicator
ESP OFF switch and warning
lamp
Steering wheel angle sensor

4850-00
A. Meter cluster-ABS, EBD, ESP
indicator/warning lampB. Master cylinder and
boosterC. HECU
F. Front/rear wheel speed sensor
Front/rear-4WD Rear-2WDH. Parking brakeG. Brake pedal
4) Component
ABS warning lamp
ESP indicator
D. Front brake
assembly
E. Rear brake
assembly
Disc
Disc
Parking brake
warning lamp
Caliper
Caliper

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

4890-00
4WD - Front/Rear wheel speed
sensor
2WD - Front wheel speed sensor
2WD - Rear wheel speed sensor
ECU (Electronic Control Unit) 1.
ECU calculates the wheel speed, acceleration and
deceleration with the information from wheel
speed sensor, and determines the wheel slip to
control the valve and motor.
HU (Hydraulic Unit) 2.
The hydraulic circuit contains the primary circuit
and secondary circuit for ABS operation. This unit
controls the hydraulic pressure to each wheel. If
the system needs ABS operation, the valves in
the unit operate to control HOLD, RISE and
DUMP according to ECU control logic.
Motor 3.
The motor is operated when ABS is activated. The
cam-shaped output shaft of the motor enables the
brake system to receive and supply the brake fluid
during the motor operation.
Wheel speed sensor
Wheel speed sensor sends the data detected by
tone wheel to HECU.
HECU
Rear wheel speed sensor in 2WD vehicle is
different from that in 4WD vehicle.
Location of rear tone wheel (A) and wheel
sensor (B) in 2WD vehicle

G-sensor (only for 4WD)
For the vehicle with the ABS, a speed difference
between the wheels is not noticeable as all the
wheels are slipping during abrupt braking.
Therefore, the vehicle needs the speed
information from other sensors other than the
wheel speed sensor. On the 2WD vehicle, there
is not large difference between the vehicle speed
reduction and actual wheel speed reduction in
the event of braking since the driving wheels are
in the front. So, the ABS HECU can control the
vehicle, based on a calculation value. But, on the
4WD vehicle, if a speed reduction occurs in the
front or rear of the vehicle, it affects the other side
wheel. In other words, braking the rear wheels
induces also a large speed reduction in the front
wheels. The longitudinal acceleration sensor is
used for this case. It controls the ABS by using
the signals from the sensor during abrupt braking
and acceleration.
G-sensor

0000-00
1. SPECIFICATION
1) Specification of Active Wheel Sensor
Description Specification
Supplying voltage DC 12 V
Output current (at 2.75 km/h of vehicle speed) 7 mA (Lo) ~ 14 mA (Hi) +20%/-16%
Tightening torque Front: 7.8 to 11.8 Nm
Rear: 7.8 to 11.8 Nm
Operating temperature
Operating frequency 1 ~ 2,500 Hz
UnitDescription
ABS ESP
HECU Clock frequency: 32 MHz Clock frequency: 50 MHz
Memory: 128 KB Memory: 512 KB
Switch orifice Switch orifice
Wheel speed sensor Active type Active type
Steering wheel angle
sensorNone Max. detection angle speed:
Operating voltage: 9 to 12 V
Sensor cluster None Yaw rate sensor + lateral G sensor +
longitudinal G sensor (4WD)
Longitudinal G sensor 4WD only None
Pressure sensor None HECU integrated

3. ESP OFF switch
Located on the left side of
instrument panel.2. Steering wheel angle
sensor
Located on column shaft with
contact coil.1. HECU assembly
Located under the power
steering fluid reservoir and
contains the pressure sensor.
2. COMPONENTS
4. Sensor cluster
Located on the floor under front
passenger seat.5. Wheel speed sensor
(4WD/2WD-front)
Located on knuckle. the
appearance of front sensor is
same with rear sensor.6. Rear wheel speed sensor
(2WD)
Located on knuckle. The
appearance is different from
that for 4WD.