2013 SSANGYONG NEW ACTYON SPORTS wheel

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4) RISE (ABS is working) Mode
As the wheel speed increases, the inlet valve opens and the wheel's pressure increases due to the
master cylinder pressure. In addition, the pump circulates the oil in the low pressure chamber to the
wheel. As the hydraulic pressure to the wheel increases, the wheel speed will reduce. This operation
continues repetitively until there are no signs that the ABS HECU tends to lock the wheels. Since the
ABS hydraulic pressure control process takes place repeatedly for a short time, there may be some
vibration and noises at the brake pedal.
Solenoid valve Valve Open/Close Pump motor
Inlet valve - Normal open (NO) valve Open
ON
Outlet valve - Normal close (NC) valve Close

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1. SPECIFICATION
1) Specification of Active Wheel Sensor
Description Specification Remark
Supplying voltage 4.5 ~ 16.0V
Output current (at 2.75 km/h of vehicle
speed)7mA(Lo) ~ 14mA(Hi)
Tightening torqueFront: 7.8 to 11.8 Nm
Rear: 7.8 to 11.8 Nm
Operating temperature-40 ~ 150℃
Operating frequency 1 ~ 2,500Hz
UnitDescription
Specification
ABS ESP
HECU Clock frequency: 32 MHz Clock frequency: 50 MHz
Memory: 128 KB Memory: 256 KB
Wheel speed
sensorActive type Active type Output: 7~14 mA
Steering wheel
angle sensorNone Max. detection angle speed:
1500 °/SecPulse duty:
50±10%
Operating voltage: 9 to 12 V
Sensor cluster None Yaw rate sensor + lateral G
sensor + longitudinal G sensor
(4WD)Mounting
direction should
be kept (CAN
communcation)
Longitudinal G
sensor4WD only None
Pressure sensor None HECU integrated

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2) Specification of Steering Wheel Angle Sensor
3) Specification of Sensor Cluster
Description Specification
Operating voltage 9 to 16 V
Maximum output current 10 mA
Maximum detection angle speed±100°/Sec
Operating temperature-30 to 75 ℃
Supplying voltage 9 to 16 V (battery voltage)
Output voltage (HI) approx. 3.50 V (3.0 to 4.1 V)
Output voltage (LO) approx. 1.50 V (1.3 to 2.0 V)
Pulses/rev 45 pulses/rev
Description Specification
Supplying voltage approx. 12 V (8 to 16 V)
Current consumption below 250 mA -
Operating range Yaw rate sensor± 75 °/Sec
Lateral/longitudinal sensor± 14.7m/Sec²

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2. MAJOR CHANGES
Steering wheel angle sensor
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3. SYSTEM LAYOUT
ESP System ▶
Sensor - front wheel speed
Sensor - rear wheel speed
Screw (7.8~11.8 Nm)
Clip - cable holder
Clip - sensor cable mounting rear
Plug - blind
HECU
Sensor - cluster
Nut (9.8~10.8 Nm)
ESP OFF switch
Steering wheel sensor 1.
2.
3.
4.
5.
6.
9.
10.
11.
12.
13.

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HECU (Hydraulic & Electronic Control Unit) ▶
to FL wheelto RR wheelto RL wheel
to FR wheel
Hydraulic & Electronic Control Unit (HECU) 1.to master cylinder

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1. OVERVIEW
The ESP (Electronic Stability Program) has been developed to help a driver avoid danger of losing
control of the vehicle stability due to understeer or oversteer during cornering. The yaw rate sensor,
lateral sensor and longitudinal sensor in the sensor cluster and the steering wheel angle sensor under
the steering column detect the vehicle conditions when the inner or outer wheels are spinning during
oversteer, understeer or cornering. The ESP ECU controls against oversteer or understeer during
cornering by controlling the vehicle stability using input values from these sensors and applying the
braking force to the corresponding wheels independently. The system also controls the engine power
right before the wheel spin synchronized to decelerate the vehicle automatically in order to maintain the
vehicle stable during cornering.

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ESP OFF switch
Located on the left side of
instrument panel.
Rear wheel speed sensor
Located on the both ends of
rear axle.Front wheel speed sensor
Located on the hub assembly.Sensor cluster
Located at the bottom of center
fascia panel.
Steering wheel angle sensor
Located on column shaft with
contact coil.HECU assembly
Located near the brake booster
in engine compartment and
contains the pressure sensor.
2. COMPONENTS