2013 SSANGYONG NEW ACTYON SPORTS power steering

01-38410-02
I/P - LH FUSE / RELAY BOX
- Power supply circuit for HFM sensor added (F30)
- Fuse for heated steering wheel added (F32)
1. MAJOR CHANGES
Driver’s interior fuse and relay box assembly changed ▶
F32
F30

04-4
SSPS system-specific information reflected to instrument cluster
2. MAJOR CHANGES
SSPS warning lamp (red) added to lower left corner of the instrument cluster due to introducing of
SSPS (Speed Sensing Power Steering) system
No. 7 terminal (SSPS system malfunction signal) added to sub-connector at rear of instrument
cluster -
-
SSPS warning lamp
Comes on when fault occurs in
SSPS system
Sub-connector
Main connector
SSPS system malfunction
signal (No. 7 terminal)

06-8
1. OVERVIEW
TRIP/RESET Switch
The mode is changed each time this button is
pressed as follows: TRIP A -> TRIP B -> DTE -
> Driving time -> Average fuel economy ->
Instant fuel consumption -> Tail lamp
illumination level.Windshield de-icer switch
Pressing switch activates windshield
heated glass for approx. 12 minutes
The main switch which allows the
driver to control all door windows,
door lock and window lock from the
driver seat. Tailgate and
outside rearview
mirror heated glass
switch
Pressing switch
activates tailgate and
outside rearview
mirror heated glass
for approx. 12
minutes
Driver power window switchESP ON/OFF switch
Pressing this switch deactivates the ESP (Electronic
Stability Program) system and turns on the ESP OFF
indicator on the instrument cluster. Pressing this
switch again turns off the ESP OFF indicator and
activates the ESP system. Outside rearview mirror folding/unfolding switch
Press the FOLD/UNFOLD switch to fold the outside
rearview mirror and press the switch again to unfold
the mirror.
Rear Fog Lamp Switch
The rear fog lamp comes on when
the rear fog lamp is turned on only
while the front fog lamp is ON.
Steering Wheel Heating
Switch
To heat the steering wheel,
press this switch. To stop
the heating, press it again.
The indicator on the
instrument cluster comes
on when heating and goes
off when turning off. The
heating function stops when
stopping the engine.

08-8
5. TROUBLESHOOTING
Problem Cause Action
Vehicle rollingBroken stabilizer bar Replace
Faulty shock absorber Replace
Abnormal noise.Loosening mounting Retighten
Damaged or worn wheel bearing Replace
Damaged shock absorber Replace
Damaged tire Replace
Poor ridingOver inflated tire Adjust pressure
Faulty shock absorber Replace
Loosened wheel nut Tighten as specified torque
Bent or broken coil spring Replace
Damaged tire Replace
Worn bushing Replace
Vehicle pulls to one sideDeformed arm assembly Replace
Worn bushing Replace
Bent or broken coil spring Replace
Hard steeringExcessive resistance of lower arm ball
jointReplace
Insufficient tire pressure Replace
Faulty power steering Replace
Unstable steering
Worn or loosened lower arm bushing Retighten or replace
Vehicle bottoming
Worn or broken coil spring Replace
Vehicle height loweredOver loaded on the vehicle -
Defective shock absorber Replace
Defective coil spring Replace

10-6
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

11-8
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.

11-10
3. FUNCTION
1) Term Definition
ABS: Anti-Lock Brake System ▶
When the brake pedal is abruptly depressed, the HECU calculates the slip ratio of each wheel based on
information received from the wheel speed sensors and controls the hydraulic module data quickly and
precisely in order to maintain the friction between the road surface and tire optimal (static friction).
Therefore, by keeping the friction between the road surface and tire optimal, it is possible to obtain
following effects: Enhanced steering stability, improved direction stability, reduced stopping distance and
etc.
EBD: Electronic brake-Force Distribution ▶
This is to detect the tire speed from the wheel speed sensor in order to supply the braking pressure to
the rear tires individually. In other words, the HECU measures the tire deceleration speed continuously
and controls the rear inlet valve on the hydraulic modulator to obtain optimal braking force as much as
possible. Thereby, stopping distance, braking effect and straight stability are improved.
ESP: Electronic Stability Program ▶
This is used to make the vehicle stabilized to recognize the emergency driving conditions, and to control
the brake for each wheels and the engine power when the brake system or acceleration will not work
any more in dangerous circumstances.
TCS: Traction Control System ▶
When the wheel is slipping due to an excessive engine torque while starting off or driving, this controls
the driving force (braking force + engine torque) in order to prevent the wheel from slipping through the
engine or brake control.
AYC: Active Yaw Control ▶
This has been developed to help a driver avoid danger of losing control of the vehicle stability due to
understeer or oversteer during cornering, which is a part of the ESP function.
HBA: Hydraulic Brake Assistant ▶
Developed based on the fact that elderly drivers depress the brake pedal too soft even when hard
braking is necessary, this an assist system to operate the HECU drive motor immediately and apply high
braking force to the wheels when the brake pedal is depressed softly and the vehicle should be braked
in emergency.
ARP: Active Rollover Protection ▶
This is a supplementary device for safety in ESP system and can help minimize the rollover accidents by
detecting a potential rollover situation through the brake and engine control when making sudden lane
change or turning sharply by adding only the software, without any separate device or switch.

11-16
2) Operation of ESP System
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 with the ASR function to decelerate the vehicle automatically in
order to maintain the vehicle stable during cornering.
(1) Under steering
What is understeering? ▶
Understeer is a term for a condition in which the steering wheel is steered to a certain angle during driving
and the front tires slip toward the reverse direction of the desired direction. Generally, vehicles are
designed to have understeer. It is because that the vehicle can return back to inside of cornering line
when the steering wheel is steered toward the inside even when the front wheels are slipped outward.
As the centrifugal force increases, the tires can easily lose the traction and the vehicle tends to slip
outward when the curve angle gets bigger and the speed increases.