Lexus 2005 IS300 User Manual page 1176

RS-8
SUPPLEMENTAL RESTRAINT SYSTEM
Primary Lock
Primary Lock Incomplete
(Secondary Lock Prevented)
Fig.1
Power Source
Safing
Sensor
Fig.2
Deceleration Sensor
2005 LEXUS IS300 (RM1140U)
Secondary Lock
Primary Lock Complete
(Secondary Lock Permitted)
Squibs
Z14034
Outer
H01581
- SRS AIRBAG
Lock
(b) When the vehicle is involved in a frontal collision in the
hatched area (Fig. 1) and the shock is larger than the pre-
determined level, the SRS is activated automatically. A
safing sensor is designed to go on at a smaller decelera-
tion rate than the airbag sensor. As illustrated in Fig. 2,
ignition is caused when current flows to the squib, which
happens when a safing sensor and the deceleration sen-
sor go on simultaneously. When a deceleration force acts
on the sensors, 2 squibs in the driver airbag and front pas-
senger airbag ignite and generate gas. The gas discharg-
ing into the driver airbag and front passenger airbag rap-
idly increases the pressure inside the bags, breaking
open the steering wheel pad and instrument panel.
Bag inflation then ends, and the bags deflate as the gas
is discharged through discharge holes at the bag's rear or
side.
12. DISCONNECTION OF CONNECTORS FOR FRONT
AIRBAG SENSOR AND SIDE AND CURTAIN SHIELD
AIRBAG SENSOR
(a) While holding both flank sides of the outer, slide the outer
to the direction shown by an arrow.
(b) Lock of the connectors is released, then disconnect the
connectors.
HINT:
Be sure to hold both flank sides of the outer. If holding the top
and bottom sides, it will obstruct disconnection.
Author :
Lock
Twin-Lock Completed
Date :
H03989
1924