/library/BOOKS/CAR/SsangYong/Actyon/Actyon_EWD_C0105009.pdf\n5- Electrical Wiring Diagrams
2) PRESSURE SENSOR, S.W.A SENSOR, SENSOR CLUSTER, ESP OFF SW, HDC
BAT+
Electrical Wiring Diagram (LHD)
Electrical Wiring Diagrams -57
A. CONNECTOR INFORMATION
Connector Number Connecting Wiring
(Pin Number, Color) Harness Connector Position Remark
C (14Pin, White) W/H Floor - Eng Room Fuse & Relay Box Eng Room Fuse & Relay Box
C (39Pin, Black) W/H Main - W/H Floor Driver Cowl Side C/Holder
C (39Pin, Black) W/H Main - W/H Floor Upper the Driver Legroom C/Holder
C (26Pin, White) W/H Main - W/H Floor Upper the Driver Legroom C/Holder
G W/H Main Inner the Passenger Cowl Side PNL
S (14Pin, Black) W/H Main RR Protector of the Driver Legroam ILL
S (14Pin, Black) W/H Main Upper the PTC Protector GND
S (14Pin, Black) W/H Main Upper the PTC Protector IGN1, T/Signal
B. CONNECTOR IDENTIFICATION SYMBOL & PIN NUMBER POSITION
C. CIRCUIT DESCRIPTION
ABS COMPONENTS
Newly introduced ABS has a different shape of integrated hydraulic modulator and HECU (Hydraulic and Elec-
tronic Control Unit) compared to existing ABS. And, the wheel speed sensor uses different method to detect
wheel speed. The basic function of the ABS that maintains the vehicle stability by controlling the steerability of
the vehicle when braking has not been changed.
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 V power supply to the sensor.
Specifications
Item Specifications Reference
Supplying voltage DC V
Front: 0. ~ 0. mm Cannot measure the
Air gap
Rear: 0. ~ 0. mm air gap
Output current (vehicle speed: at 2. km/h) mA (Lo) ~ mA (Hi) + % / - %
Front: ~ Nm
Tightening torque.5 ~ V
Rear: ~ Nm
Electrical Wiring Diagram (LHD)
5- Electrical Wiring Diagrams
HBA (HYDRAULIC BRAKE ASSIST SYSTEM)
HBA (Hydraulic Brake Assist) system helps in an emergency braking situation when the driver applies the brake
fast, but not with sufficient pressure, which leads to dangerously long braking distance. ECU recognizes the
attempt at full braking and transmits the signal calling for full brake pressure from the hydraulic booster. An
inexperienced, elderly or physically weak driver may suffer from the accident by not fully pressing the brake pedal
when hard braking is required under emergency. The HBA System increases the braking force under urgent
situations to enhance the inputted braking force from the driver.
SWAS : STEERING WHEEL ANGLE SENSOR
The steering wheel angle sensor is located between clock spring and multifunction switch. This sensor is used
for recognition of driver’s intends. If the sensor is replaced with new one, it can detect the neutral position after
the vehicle is moving over km/h for more than seconds.
Working voltage ~ V
Number of pulse
Pulses /1rev
per revolution
Duty Approx. %
High - V.0 ~ 4.1 V
Low - V.3 ~ 2.0 V
Detects steering wheel
ST1 and ST angle and angular veloc-
ity as an average value
Detects the center value
STN Center line of steering wheel
of steering wheel
HDC (Hill Descent Control) SYSTEM
When the slope level exceeds %, the HDC operates until the vehicle reaches the speed condition given in step (4).
1. When the slope level is between % and % during the HDC operation
When depressing the accelerator pedal or brake pedal, HDC system is changed to stand-by mode. When
depressing the accelerator pedal again, HDC starts its operation again. Therefore, drivers can control the
vehicle speed to a desired level by operating the accelerator pedal.
2. When the slope level exceeds % during the HDC operation
When depressing the accelerator pedal, HDC system is changed to stand-by mode. When depressing the
brake pedal, HDC continues its operation and the braking power is increased.
In this case, HECU sounds an abnormal noise and brake pedal may be very rigid, but this is a normal
condition due to HDC operation.
Electrical Wiring Diagram (LHD)
Electrical Wiring Diagrams -59
INPUT/OUTPUT SIGNALS FOR HDC OPERATION
HDC switch Modulator pump
Gear position
sensing
Manual transmission:
Neutral position Neutral switch (N)
Reverse position Backup lamp switch
S HECU (Valve
Automatic transmission: Selector lever
modulator)
LDF Valve and MCI
valve
Engine condition
monitoring
1. RPM
2. Engine torque
3. Gas pedal module
(monitoring gas pedal depression)
C Stop lamp
When depressing accelerator pedal
during HDC operation, it is deactivated
(regardless of the slope level). U When the HDC
operates, HECU turns
on the stop lamp by
supplying V power
(separate relay).
Brake pedal switch
When depressing brake pedal during
HDC operation, (HDC
HDC indicator and
1. If the slope level is between % and CONTROLLER)
warning lamp
: HDC is deactivated.
(instrument panel)
2. If the slope level exceeds %, HDC
function is still activated and the brake
pressure is added.
Sensor cluster
Longitudinal acceleration sensor
Electrical Wiring Diagram (LHD)
