TOYOTA YARIS 2016 Manual PDF

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1-4. SRS Air Bags
1
Essential Safety Equipment
Supplemental Restraint System Compo-
nents
Side and curtain inflators and air bags
Side crash sensors
Driver/Front passenger inflators and air bags
Air bag/seat belt pretensioner system warning light (→P. 156)
Roll-over sensor, crash sensors, and diagnostic module (SAS unit)
Front passenger air bag deactivation indicator light ( →P. 7 9 )
Front air bag sensors
Seat belt pretensioners ( →P. 3 6 )
Front passenger occupant classification sensor ( →P. 78)
Front passenger occupant classification module1
2
3
4
5
6
7
8
9
10
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1-4. SRS Air Bags
How the SRS Air Bags Work
◆Seat Belt Pretensioners
The front seat belt pretensioners are designed to deploy in moder-
ate or severe frontal, near frontal collisions.
In addition, the pretensioners operate when a side collision (only on
the side in which the collision occurs) or a roll-over accident is
detected. The pretensioners operate differently depending on what
types of air bags are equipped. For details on the seat belt preten-
sioner operation, refer to the SRS Air Bag Deployment Criteria
(→P. 7 4 ) .
◆Driver Air Bag
The driver’s air bag is mounted in the steering wheel.
When air bag crash sensors
detect a frontal impact of
greater than moderate force,
the driver’s air bag inflates
quickly helping to reduce injury
mainly to the driver’s head or
chest caused by directly hitting
the steering wheel.
For more details about air bag deployment, refer to “SRS Air Bag
Deployment Criteria” ( →P. 7 4 ) .
The driver’s dual-stage air bag controls air bag inflation in two
energy stages. During an impact of moderate severity, the driver’s
air bag deploys with lesser energy, whereas during more severe
impacts, it deploys with more energy.
Your Toyota is equipped with the following types of SRS air
bags. SRS air bags are designed to work together with the seat
belts to help to reduce injuries during an accident. The SRS air
bags are designed to provide further protection for passengers
in addition to the seat belt functions. Be sure to wear seat belts
properly.
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711-4. SRS Air Bags
1
Essential Safety Equipment
◆Front Passenger Air Bag
The front passenger air bag is mounted in the front passenger
dashboard.
The inflation mechanism for the
front passenger air bag is the
same as the driver’s air bag, as
mentioned above.
For more details about air bag
deployment, refer to “SRS Air
Bag Deployment Criteria”
(→P. 7 4 ) .
In addition, the front passenger air bag is designed to only deploy
when the front passenger occupant classification sensor detects a
passenger sitting on the front passenger’s seat. For details, refer to
the front passenger occupant classification system ( →P. 7 8 ) .
◆Side Air Bags
The side air bags are mounted in the outboard sides of the front
seatbacks.
When the air bag crash sensors
detect a side impact of greater
than moderate force, the sys-
tem inflates the side air bag
only on the side in which the
vehicle was hit. The side air
bag inflates quickly to reduce
injury to the driver or front pas-
senger’s chest caused by
directly hitting interior parts
such as a door or window.
For more details about air bag deployment, refer to “SRS Air Bag
Deployment Criteria” ( →P. 7 4 ) .
In addition, the front passenger side bag is designed to only deploy
when the front passenger occupant classification sensor detects a
passenger sitting on the front passenger’s seat. For details, refer to
the front passenger occupant classification system ( →P. 7 8 ) .
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1-4. SRS Air Bags
◆Curtain Air Bags
The curtain air bags are mounted in the front and rear window pil-
lars, and the roof edge along both sides.
When the air bag crash sensors detect a side impact of greater
than moderate force, the curtain air bag inflates quickly and helps to
reduce injury mainly to the rear outboard passenger’s head caused
by directly hitting interior parts such as a door or window.
For more details about air bag deployment, refer to “SRS Air Bag
Deployment Criteria” (→P. 7 4 ) .
XIn a side impact
Greater than moderate impact to one side of the vehicle will cause
the curtain air bag on that side only to inflate.
Only one side curtain air bag
will deploy on the side of the
vehicle that receives the force
of an impact.
XIn a roll-over
In response to a vehicle roll-over, both curtain air bags inflate.
Both curtain air bags will deploy
after the roll-over accident is
detected.
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731-4. SRS Air Bags
1
Essential Safety Equipment
◆Warning Light/Beep
A system malfunction or operation conditions are indicated by a
warning.
Refer to Warning/Indicator Lights on P. 156.
Refer to Warning Sound is Activated on P. 522.
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1-4. SRS Air Bags
SRS Air Bag Deployment Criteria
This chart indicates the applicable SRS equipment that will deploy
depending on the type of collision.
(The illustrations are the representative cases of collisions.)
SRS
equipment
Types of collision
A severe frontal/near
frontal collisionA severe
side colli-
sion
*2
A roll-over/near roll-
over
*3
A rear colli- sion
Front seat belt pre-
tensioner
X*1 (both sides)X*1 (impact
side only)X*1 (both
sides)
No air bag and front seat belt
preten-
sioner will
be activated
in a rear
collision.Driver air bagX
Front pas-senger air bag
X*1
Side air
bagX*1 (impact
side only)
Curtain air bagX (impact
side only)X (both sides)
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751-4. SRS Air Bags
1
Essential Safety Equipment
X: The SRS air bag equipment is designed to deploy in a collision.
*1:The front passenger front and side air bags and the seat belt pretensioner
are designed to deploy when the front passenger occupant classification
sensor detects a passenger sitting on the front passenger’s seat.
*2:In a side collision, the seat belt pretensioners and the side/curtain air bags
deploy (only on the side in which the collision occurs).
*3:In a roll-over accident, the seat belt pretensioners and the curtain air bags
deploy.
In a frontal offset collision, the equipped air bags and pretensioners may all
deploy depending on the direction, angle, and rate of impact.
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1-4. SRS Air Bags
Limitations to SRS Air Bag
The following illustrations are examples of front/near front collisions
that may not be detected as severe enough to deploy the SRS air bag
equipment.
Impacts involving trees or poles
Frontal offset impact to the vehicle
Rear-ending or running under a
truck’s tail gate
In severe collisions such as those described previously in “SRS
Air Bag Deployment Criteria”, the applicable SRS air bag equip-
ment will deploy. However, in some accidents, the equipment
may not deploy depending on the type of collision and its sever-
ity.
Limitations to front/near front collision detection
IN14ZZ009
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771-4. SRS Air Bags
1
Essential Safety Equipment
The following illustrations are examples of side collisions that may not
be detected as severe enough to deploy the SRS air bag equipment.
Side impacts involving trees or
poles
Side impacts with two-wheeled
vehicles
The following illustration is an example of an accident that may not be
detected as a roll-over accident. Therefore, the front seat belt preten-
sioners and curtain air bags may not deploy.
Pitch end over end
Limitations to side collision detection
Limitations to roll-over detection
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1-4. SRS Air Bags
Front Passenger Occupant Classification
System
Your vehicle is equipped with a front passenger occupant classifica-
tion sensor as a part of the supplemental restraint system. This sen-
sor is equipped in the front passenger’s seat cushion. This sensor
measures the electrostatic capacity of the front passenger’s seat. The
SAS unit is designed to prevent the front passenger front and side air
bags and seat belt pretensioner system from deploying if the front
passenger air bag deactivation indicator light turns on.
To reduce the chance of injuries caused by deployment of the front
passenger air bag, the system deactivates the front passenger front
and side air bags and also the seat belt pretensioner system when the
front passenger air bag deactivation indicator light turns on. Refer to
the following table for the front passenger air bag deactivation indica-
tor light illumination conditions.
This system shuts off the front passenger front and side air bags and
seat belt pretensioner system, so make sure the front passenger air
bag deactivation indicator light turns on according to the following
table.
The air bag/front seat belt pretensioner system warning light flashes
and the front passenger air bag deactivation indicator light illuminates
if the sensors have a possible malfunction. If this happens, the front
passenger front and side air bags and seat belt pretensioner system
will not deploy.
First, please read “Supplemental Restraint System (SRS) Pre-
cautions” (→P. 62) carefully.
Front Passenger Occupant Classification Sensor
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