43
uuSeat Belts uAbout Your Seat Belts
Safe DrivingThe front seats are equipped with automatic seat belt tensioners to enhance safety.
The tensioners automatically tighten the front seat belts during a moderate-to-
severe frontal collision, sometimes even if the collision is not severe enough to
inflate the front airbags.
■Automatic Seat Belt Tensioners1 Automatic Seat Belt Tensioners
The seat belt tensioners can only operate once.
If a tensioner is activated, the SRS indicator will come
on. Have a dealer replace the tensioner and
thoroughly inspect the seat belt system as it may not
offer protection in a subsequent crash.
During a moderate-to-severe side impact, the
tensioner on that side of the vehicle also activates.
21 CIVIC 5D HUM-31TGG6400_01.book 43 ページ 2020年8月28日 金曜日 午後1時4 8分
49
uuAirbags uAirbag System Components
Continued
Safe Driving
The front, front side, and side curtain
airbags are deployed according to the
direction and severity of impact. Both side
curtain airbags are deployed in a rollover.
The airbag system includes:
aTwo SRS (Supplemental Restraint System)
front airbags. The driver's airbag is stored
in the center of the steering wheel; the
front passenger's airbag is stored in the
dashboard. Both are marked SRS
AIRBAG.
bTwo side airbags, one for the driver and
one for a front passenger. The airbags are
stored in the outer edges of the seat-
backs. Both are marked SIDE AIRBAG.
cTwo side curtain ai rbags, one for each
side of the vehicle. The airbags are stored
in the ceiling, abov e the side windows.
The front and rear pillars are marked
SIDE CURTAIN AIRBAG .
dAn electronic control unit that, when the
ignition switch is in ON
(w*1, continually
monitors information about the various
impact sensors, seat and buckle sensors,
rollover sensor, airbag activators, seat
belt tensioners, and other vehicle
information. During a crash event the
unit can record such information.
eAutomatic front seat belt tensioners. In
addition, the driver’s and front
passenger’s seat belt buckles incorporate
sensors that detect whether or not the
belts are fastened.
fDriver’s seat position sensor. This sensor
detects the driver’s s eat slide position to
help determine the optimal deployment
of the driver’s airbag.
gWeight sensors in the front passenger’s
seat. The sensors are used for occupant
classification to activate or deactivate the
front passenger’s airbag.
hImpact sensors that can detect a
moderate-to-severe front or side impact.
iAn indicator on the dashboard that alerts
you that the front passenger’s front
airbag has been turned off.
jAn indicator on the instrument panel that
alerts you to a possib le problem with your
airbag system or seat belt tensioners.
kA rollover sensor that can detect if your
vehicle is about to ro ll over and signal the
control unit to deploy both side curtain
airbags.
*1: Models with the smart entry system have an
ENGINE START/STOP button instead of an
ignition switch.
21 CIVIC 5D HUM-31TGG6400_01.book 49 ページ 2020年8月28日 金曜日 午後1時4 8分
uuAirbags uFront Airbags (SRS)
52
Safe DrivingFront airbags are designed to inflate during moderate-to-severe frontal collisions.
When the vehicle decelerates suddenly, the sensors send information to the control
unit which signals one or both front airbags to inflate.
A frontal collision can be either head-on or angled between two vehicles, or when a
vehicle crashes into a stationary object, such as a concrete wall.
While your seat belt restrains your torso, the
front airbag provides supplemental protection
for your head and chest.
The front airbags deflate immediately so that
they won't interfere with the driver's visibility
or the ability to steer or operate other
controls.
The total time for inflation and deflation is so fast that most occupants are not
aware that the airbags depl oyed until they see them lying in front of them.
■Operation
■How the Front Airbags Work1How the Front Airbags Work
Although the driver's and fr ont passenger's airbags
normally inflate within a spli t second of each other, it
is possible for only one airbag to deploy. This can
happen if the severity of a collision is at the margin,
or threshold, that determines whether or not the
airbags will deploy. In such cases, the seat belt will
provide sufficient protec tion, and the supplemental
protection offered by the airbag would be minimal.
21 CIVIC 5D HUM-31TGG6400_01.book 52 ページ 2020年8月28日 金曜日 午後1時4 8分
uuAirbags uFront Airbags (SRS)
54
Safe DrivingThe airbags have advanced features to help reduce the likelihood of airbag related
injuries to smaller occupants.
The driver’s advanced airbag system includes a
seat position sensor.
Based on information from this sensor and the
severity of the impact, the advanced airbag
system determines the optimal deployment of
the driver’s airbag.
The front passenger’s advanced airbag system
has weight sensors. The sensors are used for
occupant classification to activate or
deactivate the front passenger’s airbag.
For adult size occupants, the system will
automatically activate the front passenger’s
airbag. If a small adul t sits in the front
passenger seat and the system does not
recognize him/her as an adult, see
2 Passenger Front Airbag Off Indicator P. 61
■Advanced Airbags1Advanced Airbags
If there is a problem with the driver’s seat position
sensor or the passenger’s s eat weight sensors, the
SRS indicator will come on, and in the event of a
crash, the airbag will deploy (regardless of the driver’s
seating position or passenger’s occupant
classification) with a force corresponding to the
severity of the impact. 2 Supplemental Restraint System (SRS)
Indicator P. 60
For the advanced front airbags to work properly,
confirm that:
•The occupant is sitting in an upright position,
wearing the seat belt prope rly and the seat back is
not excessively reclined.
•The occupant is not leaning against the door or
center console.
•The occupant’s feet are plac ed on the floor in front
of them.
•There are no objects ha nging from the front
passenger’s seat.
•Only small, lightweight objec ts are in the seat back
pocket.
•The steering wheel and passenger’s side dashboard
are not obstructed by any object.
•No liquid has been spille d on or under the seat.•There is no child seat or other object pressing
against the rear of the seat or seat back.
•There is no rear passenger pushing or pulling on
the back of the front passenger’s seat.
Driver’s
Seat
Position
Sensor
Passenger’s
Seat
Weight
Sensors
21 CIVIC 5D HUM-31TGG6400_01.book 54 ページ 2020年8月28日 金曜日 午後1時4 8分
55
uuAirbags uFront Airbags (SRS)
Safe Driving
We advise against allowing a child age 12 or under to ride in the front passenger’s
seat. However, if you do allow a small chil d or infant to ride in the front passenger’s
seat, the system is designed to automatically deactivate the front passenger’s airbag.
Do not let a small child or infant ride in th e front passenger’s seat if the airbag does
not automatically deactivate.1 Advanced Airbags
•There are no objects placed under or beside the
front passenger’s seat . Improperly positioned
objects can interfere with the advanced airbag
sensors.
•The head restraint is not contacting the roof. 2Passenger Front Airbag Off Indicator
P. 61
•The floor mat behind the front passenger’s seat is
set in the correct position evenly on the floor. An
improperly placed mat can interfere with the
advanced airbag sensors. 2Floor Mats P. 626
21 CIVIC 5D HUM-31TGG6400_01.book 55 ページ 2020年8月28日 金曜日 午後1時4 8分
60
uuAirbags uAirbag System Indicators
Safe Driving
Airbag System Indicators
If a problem occurs in the airbag system , the SRS indicator will come on and a
message appears on the driver information interface.
■When the ignition sw itch is turned to
ON
(w*1
The indicator comes on for a few seconds,
then goes off. This tells you the system is
working properly.
If the indicator comes on at any other time, or does not come on at all, have the
system checked by a dealer as soon as po ssible. If you don’t, your airbags and seat
belt tensioners may not work properly when they are needed.
*1: Models with the smart entry system have an ENGINE START/STOP button instead of an
ignition switch.
■Supplemental Restraint System (SRS) Indicator
1 Supplemental Restraint Sy stem (SRS) Indicator
3WARNING
Ignoring the SRS indicator can result in
serious injury or death if the airbag systems
or tensioners do not work properly.
Have your vehicle checked by a dealer as
soon as possible if th e SRS indicator alerts
you to a possible problem.
21 CIVIC 5D HUM-31TGG6400_01.book 60 ページ 2020年8月28日 金曜日 午後1時4 8分
Continued61
uuAirbags uAirbag System Indicators
Safe Driving■When the passenger front airbag off
indicator comes on
The indicator comes on to alert you that the
front passenger’s airbag has been turned off.
This occurs if the seat is empty or when the
weight sensors determine that a small child or
infant is on the passenger seat.
Children age 12 or under shou ld always ride properly restrained in a back seat.
2Child Safety P. 64
If the indicator is on in the event of a cr ash, the front passenger’s airbag will not
deploy.
■Passenger Front Airbag Off Indicator1 Passenger Front Airbag Off Indicator
To ensure the passenger is detected properly, confirm
that:
•The occupant is sitting in an upright position,
wearing the seat belt prope rly and the seat back is
not excessively reclined.
•The occupant is not leaning against the door or
center console.
•The occupant’s feet are plac ed on the floor in front
of them.
•There are no objects ha nging from the front
passenger’s seat.
•Only small, lightweight objec ts are in the seat back
pocket.
•No liquid has been spille d on or under the seat.•There is no child seat or other object pressing
against the rear of the seat or seat back.
•There is no rear passenger pushing or pulling on
the back of the front passenger’s seat.
•There are no objects placed under or beside the
front passenger’s seat . Improperly positioned
objects can interfere with the advanced airbag
sensors.
•The floor mat behind the front passenger’s seat is
set in the correct position evenly on the floor. An
improperly placed mat can interfere with the
advanced airbag sensors.
•The head restraint is not contacting the roof.
U.S.
Canada
21 CIVIC 5D HUM-31TGG6400_01.book 61 ページ 2020年8月28日 金曜日 午後1時4 8分
uuAirbags uAirbag System Indicators
62
Safe Driving
1Passenger Front Airbag Off Indicator
The passenger airbag off indicator may come on and
go off periodically if the tota l weight on the seat is
near the airbag cutoff threshold. For a small adult,
depending on physique and posture, the system may
not recognize him/her as an adult and thus deactivate
the front passenger’s airbag.
If this occurs, please confirm that the conditions set
forth in the above bullet points on the previous page
are met.
If the above conditions are met and the indicator is
still on, then with the transmission in park, turn the
ignition off and back on.
Have your vehicle checked by a dealer as soon as
possible if:
•All of the above conditions are met, and the
indicator comes on with an adult seated in the
front passenger seat.
•The seat is empty and the indicator is off.
Do not allow an adult passe nger to ride in the front
seat when the indicator is on.
21 CIVIC 5D HUM-31TGG6400_01.book 62 ページ 2020年8月28日 金曜日 午後1時4 8分