SsangYong Actyon Sports II. Manual - part 181

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3. 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

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4. DEPLOYMENT

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.

The table shows the basic inner resistance of the air bag related module and the basic instant current 

necessary for firing.

1) Air Bag System Deployment (Firing Loop)

2) 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.

Deployment signal 

output (crash out)

200ms 

Automatic Door Unlock (Crash unlock: unlock when colliding)

▶

The air bag collision signal input cannot be accepted within 7 seconds after turning the ignition key to 

"ON" position.

After this period, the door lock system outputs "UNLOCK" for all doors for 5 seconds from 40 ms after 

receiving the air bag collision signal.

Even though the key is turned to "OFF" position during the output of "UNLOCK", the output continues 

on for remaining period.

The function is erased when turning "OFF" the ignition switch.

1.

2.

3.

4.

Air bag module

DAB /PAB

Seat belt pretensioner(BPA)

Resistance (at -30 ~ 85˚C)

2 ±0.3 Ω 

2.15 ±0.35 Ω   

Firing current

1.2 Amps 

0.8 Amps 

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 power supplied by the 

tester.

Before removing or installing any air bag related components, disconnect the negative battery 

cable.

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The "Unlock" control by air bag signal prevails over any "LOCK" or "UNLOCK" control by other 

functions.

The "LOCK/UNLOCK" request by other functions will be ignored after/during the output of 

"UNLOCK" by the air bag.

However, the door lock is controlled by other functions when the ignition switch is "OFF".

"LOCK" (or "UNLOCK") output is ignored if "LOCK" (or "UNLOCK") output is required while 

performing the output of "LOCK" (or "UNLOCK").

However, UNLOCK by air bag signal and operation by the remote control key are valid.

If the door lock system outputs "LOCK" and "UNLOCK" simultaneously, only the "LOCK" output can 

be activated.

1.

2.

3.

4.

Cautions for Door Lock/Unlock Control

▶

ING KEY

SW(*1) 

Deployment 

signal

Door unlock 

relay

ON 

OFF

ON 

OFF

ON
OFF

T1 : 200ms         T2 : 40ms         T3 : 5s 

T3 

T2 

T1