The indicator normally comes on when the
electric motor switch is turned to the ON
position and goes off a few seconds later.
In the following situations, the indicator will stay
on to show that the passenger’s (front) air bag
is not operational.
・The front passenger’s side seat is not
occupied.
・The system is sensed the child stays in child
restraint system.
When the front passenger’s side seat occupant
classification sensor system is sensed the
occupant in being on the front passenger’s side
seat, the indicator goes out to show that the
passenger’s (front) airbag is operational
<For 2020MY to 2022MY>
Passenger’s air bag OFF indicator light is
incorporated by overhead bezel.
SRS-ECU incorporates the G-sensor. Upon a
frontal collision, when the impact G is detected
by the front impact sensor in the engine
compartment as well as the G-sensor in SRS-
ECU, the SRS-ECU supplies electrical current
to the driver's, front passenger's and knee air
bag modules (squibs) and to the seat belt pre-
tensioner. Upon a side collision, when the
impact G is detected by the side impact sensor
at the bottom of the center pillar and the G-
sensor in SRS-ECU, the SRS-ECU supplies
electrical current to the side air bag modules
(squibs) and the curtain air bag module (squib).
If a rollover occurs, the rollover sensor in the
SRS-ECU detects it and the SRS-ECU
energizes the curtain air bag module
(squib).The SRS-ECU then performs the high
voltage shutdown judgment. Also, SRS-ECU
has the following functions that improve the
system reliability.
・Power supply back-up function (back-up
condenser) in preparation for the power supply
malfunction upon a collision
・Booster function (DC-DC converter) in
preparation for the battery voltage drop
・Diagnosis function that performs a system
check
To Next Page
Loading...
