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02-12
4. DEPLOYMENT
1) 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.
The table shows the basic inner resistance of the air bag related module and the basic instant
current necessary for firing.
Air bag module
Resistance (at -30 ~ 85˚C)
Firing current
-
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.
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)
▶
Automatic Door Unlock (Crash unlock: unlock when colliding)
1.
The air bag collision signal input cannot be accepted within 7 seconds after turning the ignition
key to "ON" position.
2.
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.
3.
Even though the key is turned to "OFF" position during the output of "UNLOCK", the output
continues on for remaining period.
4.
The function is erased when turning "OFF" the ignition switch.
DAB /PAB
2 ±0.3 Ω
1.2 Amps
200ms
Seat belt pretensioner(BPA)
2.15 ±0.35 Ω
0.8 Amps
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Table of Contents
Troubleshooting
