SSANGYONG ACTYON SPORTS User manual

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1. OVERVIEW
The air bag systems for this vehicle are not much different from the previous air bag system
installed in other vehicles. The curtain air bags are installed at the bottom of the roof trim
instead of the side air bag and they enhance the passenger's safety. The driver's and
passenger's curtain air bags individually deploy.
When the front air bags deploy, the seat belt pretensioners retract the seat belts too.
Collision sensors, a kind of impact G (acceleration) sensor, detect the front and longitudinal
collisions and determine whether or not to deploy air bags. The roles of each collision sensor
are as below:
Front G sensors (inside the air bag unit)
Send signals to the front air bags and the driver's and front passenger's seat belt
pretensioners.
By the signal from this sensor, front air bags (driver's and passenger's air bags) deploy
and the seat belt pretensioners of the driver's and passenger's seat belts retract seat
belts.
1.
2.
Once an air bag deploys, its repair parts vary according to the deployment situation and
damage to the vehicle from collision. Needed repairs also slightly vary between the front air
bags and the curtain air bags. The following are the differences:
Replacement parts when the front air bags deploy: the air bag units and their connection
wires (connectors included), the seat belt pretensioners and their connection wires
(connectors included), the entire front air bags, and the instrument panel (IP).
Replacement parts when a curtain air bag deploys: the new curtain air bag for the deployed
side, the air bag unit and its connection wires (connectors included), the collision G sensor
assembly for the curtain air bag, and the trims and roof headlining for the broken parts.

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1) LH
Air Bag Warning Lamp (Cluster)
Driver side STICS
40 ms after receiving the air bag
deployment signal at the vehicle speed 3
km/h or higher, it sends out the door
UNLOCK signal for 5 seconds.
BPT: Belt Pretensioner
1. LOCATIONS AND RELATED COMPONENTS
DAB: Driver Air Bag

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2) RH
PAB: Passenger Air Bag Passenger side
Air Bag Unit (SDM)
The collision G sensor is installed inside this. And it
sends out signals to deploy the front air bags
(driver's and passenger's air bags) and (or) the
driver's and passenger's seat belt retensioners.
When the front collision G sensor sends out only
the air bag deployment signal, the signal deploys
the two front air bags and ctivates their seat belt
pretensioners.
BPT: Belt Pretensioner

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2. AIR BAG SYSTEM OPERATION PROCESS
The overall air bag operation process and its functions and roles are broadly explained in this
block diagram.
This diagram summarizes and highlights the functions adopted by Ssangyoung Motors.
1) Air Bag System Block Diagram (Functions and Roles Included)

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2) Air Bag System Deployment (Firing Loop)
According to the collision deceleration rate that each collision G sensor reads, the air bag unit
sends out about 2~4 or higher Amp current. This current generates some heat, which fires the
detonator in the inflator.
This table shows the basic inner resistance of the air bag related module and the basic instant
current necessary for firing.
Please do not connect a tester to any air bag connector or single item to measure the
supplied power or resistance. The detonator may explode due to a sudden extra powe
r
supplied by the tester.
Before removing or installing any air bag related components, disconnect the negative
battery cable.
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3) Air Bag Deployment Signal Output (Crash Out)
When the air bag deploys, the signal is sent to STICS to perform the basic security operation
which is the automatic door unlock function that release the automatic door lock mode.
(1) Automatic Door Unlock (Crash unlock: unlock when colliding)
When the ignition key is the ON position, the air bag signal is not accepted for the first 7
seconds.
When the ignition key is the ON position and the vehicle speed is 3 km/h or higher, 40 ms
after receiving the air bag deployment signal, the STICS sends out the door UNLOCK signal
for 5 seconds.
Even though the ignition switch is turned off in the middle of the unlock signal being sent
out, the unlock signal continues for the remaining time.
This function cancels when the ignition key is withdrawn.
1.
2.
3.
4.
Reminder for door lock/unlock control
The unlock function by the air bag signal takes priority over any other lock/unlock
operations.
While or after the automatic unlock is made by the air bag system, any lock or unlock
request by other functions is ignored unless the ignition key switch is turned off.
When another lock or unlock output is requested while the door is being either locked o
r
unlock, the new request will be ignored. But, if an unlock request is made by the air bag
signal or the remote control key, the request will be accepted.
When the lock and unlock functions are simultaneously requested, the lock function will be
performed and the unlock function will be ignored.
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4) Air Bag Warning Lamp Operational Conditions
The air bag warning lamp on the instrument panel has a few operational conditions. The
following are the conditions:
(1) When Turning the Ignition Switch to ON Position
The air bag unit performs a turn-on test when the ignition is turned on. The air bag unit flashes
the air bag warning lamp six times at 1Hz interval. After flashing it six times, the air bag warning
lamp will turn off if no malfunction have been detected.
(2) When the Air Bag Unit Detects Any Malfunctions in Unit
When it is recorded as a system failure in the air bag unit, the air bag warning lamp on the
instrument panel comes on for about 6 seconds and goes off for 1 second. Then the waning
lamp stays on.
(3) When the Air Bag Unit Receives Any Malfunction Signals from the
Other Systems
When, due to an error from outside the system, the intermittent failure signal is received 5 times
or less, the air bag warning lamp comes on for about 6 seconds and then, goes off.

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5) Electrical Wiring Diagram

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3. AIR BAG MODULE AND RELATED COMPONENTS
This section describes the air bag module installed in ACTYON. The module consists of the
inflator, the cushion, and the mounting cover.
1) DAB (Driver Air Bag)
The driver's air bag is installed inside the steering wheel. If the acceleration sensor (inside the
air bag unit) is activated by the deceleration from vehicle collision, the detonation is fired by the
electrical signal of the air bag unit.
Then, the detonation sets off explosives and nitrogen gas is generated.
At this point, the air bag very quickly deploys and the gas is emitted from the relieving hole to
absorb impact upon the driver.
Rear View
(1) Components
Front View
Air bag cover
Air bag housing
Air bag cushion (approx. 50 liters)
Inflator* (approx. 190 Kpa)
Retainer ring
Horn switch
1.
2.
3.
4.
5.
6.
Inflator*
The inflator is composed of the detonator,
explosives, and the gas generator.
It inflates air bag when vehicle collides.

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2) PAB (Passenger Air Bag)
The passenger's air bag is installed inside the instrument panel above the glove box. Its
operation process is the same as the driver's one. The driver's air bag, the passenger's air bag,
and the seat belt pretensioners on both seats are made to operate together.
When the collision G sensor inside the air bag unit sends a collision signal, the air bag unit
instantaneously applies a high current to the driver's and passenger's air bags and the seat belt
pretensioners on both seats, fires the detonator in the inflator, and inflates the air bag cushions
(curtain air bags independently operate in case of the side collisions).
Front View Rear View
(1) Components
Passenger's air bag
module housing
Inflator
Air bag cushion
Retainer
Nut
1.
2.
3.
4.
5.

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3) Driver and Passenger BPT (Belt Pre-Tensioner)
The belt pretensioner is installed at the lower side of the B-pillar and operates simutaneously
when the front air bags deploy. When a collision occurs or when brakes are applied, a seat belt
with a pretensioner detects the stopping action and tightens the belt before the wearer is
propelled forward. This holds the occupant more securely in the seat.
Belt Pretensioner (Driver Side) Belt Pretensioner (Passenger Side)
Belt pretensioner (LH)
Curtain air bag G sensor
Belt pretensioner (RH)

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(1) Components
Belt Pretensioner
Pretensioner reel assembly
Reel bracket
Ring upper stay
D-ring
Bending tongue
Tongue stopper
Mini anchor
D-bolt
Washer
Fiber washer
Rivet
ID label
Plastic washer
Steel washer
D-bolt
Label
D-bolt
Spacer
Bush
Mini anchor cover
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.

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4) Air Bag Unit
Air Bag Unit connector
The sensor that detects
collision is integrated into the
air bag unit.
Air bag unit is installed under the AV head unit in center fascia panel.