Seat Belt Pretensioner; Srs Warning Light; Airbag Sensor Assembly; Side And Curtain Shield Airbag Sensor Assembly - Lexus 2005 IS300 User Manual

SUPPLEMENTAL RESTRAINT SYSTEM
2005 LEXUS IS300 (RM1140U)
- SRS AIRBAG
6.

SEAT BELT PRETENSIONER

The seat belt pretensioner system is a component of the front
seat outer belt. The pretensioner contains a squib, gas genera-
tor, wire, piston, etc., and operates in the event of a frontal colli-
sion. The seat belt pretensioner cannot be disassembled.
H15784
7.

SRS WARNING LIGHT

The SRS warning light is located on the combination meter. It
goes on to alert the driver of trouble in the system when a mal-
function is detected in the airbag sensor assembly self-diagno-
sis. In normal operation conditions when the ignition switch is
turned to the ON position, the light goes on for about 6 seconds
and then goes off.
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8.

AIRBAG SENSOR ASSEMBLY

The airbag sensor assembly is mounted on the floor inside the
console box. The airbag sensor assembly consists of an airbag
sensor, safing sensor, diagnosis circuit, ignition control, drive
circuit, etc. It receives signals from the airbag sensor, front air-
bag sensor, side and curtain shield airbag sensor assembly and
door side airbag assembly and judges whether the SRS must
be activated or not. The airbag sensor assembly cannot be dis-
assembled.
H15215
9. FRONT AIRBAG SENSOR
The front airbag sensor is mounted inside each of the side
members. The sensor unit is a mechanical type. When the sen-
sor detects deceleration force above a predetermined limit,
contact is made in the sensor, sending a signal to the airbag
sensor assembly. The front airbag sensor cannot be disas-
sembled.
H08444
10. SIDE AND CURTAIN SHIELD AIRBAG SENSOR AS-
SEMBLY
The side and curtain shield airbag sensor assembly is mounted
in the LH and RH center pillars. The side and curtain shield air-
bag sensor assembly consists of a lateral deceleration sensor,
safing sensor, diagnosis circuit, etc. It sends signals to the air-
bag sensor assembly to judge whether the SRS side and cur-
tain shield airbag must be activated or not. The side and curtain
shield airbag sensor assembly cannot be disassembled.
H19108
Author : Date :
RS-3
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