sensor MAZDA MODEL CX-3 2016 (in English) User Guide

2–44
Essential Safety Equipment
SRS Air Bags
How the SRS Air Bags Work
Your Mazda 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.
Seat Belt Pretensioners
The front seat belt pretensioners are designed to deploy in moderate 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 pretensioner
operation, refer to the SRS Air Bag Deployment Criteria (page 2-48 ).
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 infl ates 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"
(page 2-48 ).
(With Front Passenger Occupant Classifi cation System)
The driver's dual-stage air bag controls air bag infl ation 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.
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2–45
Essential Safety Equipment
SRS Air Bags
Front Passenger Air Bag
The front passenger air bag is mounted in the front passenger dashboard.
The infl ation 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"
(page 2-48 ).
(With Front Passenger Occupant Classifi cation System)
In addition, the front passenger air bag is designed to only deploy when the front passenger
occupant classifi cation sensor detects a passenger sitting on the front passenger's seat. For
details, refer to the front passenger occupant classifi cation system (page 2-52 ).
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*Some models.2–46
Essential Safety Equipment
SRS Air Bags
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
system infl ates the side air bag only on the side in which the vehicle was hit. The side
air bag infl ates quickly to reduce injury to the driver or front passenger'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"
(page 2-48 ).
(With Front Passenger Occupant Classifi cation System)
In addition, the front passenger side bag is designed to only deploy when the front passenger
occupant classifi cation sensor detects a passenger sitting on the front passenger's seat. For
details, refer to the front passenger occupant classifi cation system (page 2-52 ).
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*Some models.2–47
Essential Safety Equipment
SRS Air Bags
Curtain Air Bags *
The curtain air bags are mounted in the front and rear window pillars, 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 infl ates 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"
(page 2-48 ).
In a side impact:
Greater than moderate impact to one side of the vehicle will cause the curtain air bag on that
side only to infl ate.
Only one side curtain air bag will deploy on the
side of the vehicle that receives the force of an
impact.
(With Front Passenger Occupant Classifi cation System)
In a roll-over:
In response to a vehicle roll-over, both curtain air bags infl ate.
Both curtain air bags will deploy after
the roll-over accident is detected.
Warning Light/Beep
A system malfunction or operation conditions are indicated by a warning.
Refer to Warning/Indicator Lights on page 4-24 .
Refer to Warning Sound is Activated on page 7-39 .
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*Some models.2–48
Essential Safety Equipment
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
collision A severe side
collision
*2 A roll-over/near
roll-over*3 A rear collision
Front
seat belt
pretensioner X *1 (both sides) X *1 (impact side
only) X *1 (both sides)
No air bag and
front seat belt
pretensioner will be
activated in a rear
collision. Driver air
bag X
Front
passenger
air bag X
*1
Side air bag * X *1 (impact side
only)
Curtain air
bag
* X (impact side
only) X (both sides)
X: The SRS air bag equipment is designed to deploy in a collision.
*1 (With Front Passenger Occupant Classifi cation System)
The front passenger front and side air bags and the seat belt pretensioner are designed to deploy when the front
passenger occupant classifi cation sensor detects a passenger sitting on the front passenger's seat.
*2 (With Side/Curtain Air Bags)
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 (With Front Passenger Occupant Classifi cation System)
In a roll-over accident, the seat belt pretensioners and the curtain air bags deploy.
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2–52
Essential Safety Equipment
SRS Air Bags
Front Passenger Occupant Classifi cation System
First, please read "Supplemental Restraint System (SRS) Precautions" (page 2-35 ) carefully.
Front Passenger Occupant Classifi cation Sensor
Your vehicle is equipped with a front passenger occupant classifi cation sensor as a part
of the supplemental restraint system. This sensor 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 indicator 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 fl ashes 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.
Front passenger air bag deactivation indicator light
This indicator light turns on to remind you that the front passenger front and side air bags
and seat belt pretensioner will not deploy during a collision.
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2–53
Essential Safety Equipment
SRS Air Bags
If the front passenger occupant classifi cation sensor is normal, the indicator light turns
on when the ignition is switched ON. The light turns off after a few seconds. Then, the
indicator light turns on or is off under the following conditions:
Front passenger air bag deactivation indicator light on/off condition chart
Condition detected by the
front passenger occupant
classifi cation system Front passenger air
bag deactivation
indicator light Front passenger front
and side air bags Front passenger seat
belt pretensioner
system
Empty (Not occupied) On Deactivated Deactivated
A child less than 1 year old is
seated in a child-restraint system On Deactivated Deactivated
Child
*1 On or off Deactivated or ready Deactivated or ready
Adult *2 Off Ready Ready
*1 The occupant classifi cation sensor may not detect a child seated on the seat, in a child-restraint system, or a
junior seat depending on the child's physical size and seated posture.
*2 If a smaller adult sits on the front passenger seat, the sensors might detect the person as being a child depending
on the person's physique.
The curtain air bag is ready for infl ating regardless of what the front passenger air bag
deactivation indicator light on/off condition chart indicates.
If the front passenger air bag deactivation indicator light does not turn on when the ignition
is switched ON and does not turn on as indicated in the front passenger air bag deactivation
indicator light on/off condition chart, do not allow an occupant to sit in the front passenger
seat and consult an Authorized Mazda Dealer as soon as possible. The system may not work
properly in an accident.
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2–54
Essential Safety Equipment
SRS Air Bags
WARNING
Do not allow an occupant in the front passenger's seat to sit with a posture which
makes it diffi cult for the front passenger occupant classifi cation sensor to detect the
occupant correctly:
Sitting in the front passenger's seat with a posture which makes it diffi cult for the front
passenger occupant classifi cation sensor to detect the occupant correctly is dangerous.
If the front passenger occupant classifi cation sensor cannot detect the occupant sitting
on the front passenger's seat correctly, the front passenger front and side air bags and
pretensioner system may not operate (deploy) or they may operate (deploy) accidentally.
The front passenger will not have the supplementary protection of the air bags or the
accidental operation (deployment) of the air bags could result in serious injury or death.
Under the following conditions, the front passenger occupant classifi cation sensor
cannot detect a passenger sitting on the front passenger's seat correctly and the
deployment/non-deployment of the air bags cannot be controlled as indicated in the
front passenger air bag deactivation indicator light on/off condition chart. For example:




¾ A front passenger is seated as shown in the following fi gure:
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2–56
Essential Safety Equipment
SRS Air Bags
CAUTION
 


¾ To assure proper deployment of the front air bag and to prevent damage to the sensor in
the front seat cushion:
 


¾ Do not place sharp objects on the front seat cushion or leave heavy luggage on them.



¾ Do not spill any liquids on the front seats or under the front seats.




¾ To allow the sensors to function properly, always perform the following:




¾ Adjust the front seats as far back as possible and always sit upright against the
seatbacks with seat belts worn properly.
 


¾ If you place your child on the front passenger seat, secure the child-restraint system
properly and slide the front passenger seat as far back as possible (page 2-25 ).
NOTE
 


y The system requires about 10 seconds to alternate between turning the front passenger
front and side air bags and seat belt pretensioner system on or off.
 


y The front passenger air bag deactivation indicator light may turn on repeatedly if luggage
or other items are put on the front passenger seat, or if the temperature of the vehicle's
interior changes suddenly.
 


y The front passenger air bag deactivation indicator light may turn on for 10 seconds if the
electrostatic capacity on the front passenger seat changes.
 


y The air bag/front seat belt pretensioner system warning light might turn on if the front
passenger seat receives a severe impact.
 


y If the front passenger air bag deactivation indicator light does not turn on after installing
a child-restraint system on the front passenger seat, fi rst, re-install your child-restraint
system according to the procedure in this owner's manual. Then, if the front passenger air
bag deactivation indicator light still does not turn on, install the child-restraint system on
the rear seat and consult an Authorized Mazda Dealer as soon as possible.
 


y If the front passenger air bag deactivation indicator light turns on when an occupant
is seated directly in the front passenger seat, have the passenger re-adjust their posture
by sitting with their feet on the fl oor, and then re-fastening the seat belt. If the front
passenger air bag deactivation indicator light remains turned on, move the passenger to
the rear seat. If sitting in the rear seat is not possible, slide the front passenger seat as far
back as possible. Consult an Authorized Mazda Dealer as soon as possible.
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2–57
Essential Safety Equipment
SRS Air Bags
Constant Monitoring
The following components of the air bag systems are monitored by a diagnostic system:
 


y Crash sensors, and diagnostic module (SAS unit)



y Front air bag sensors



y Air bag modules



y Side crash sensors



y Air bag/Front seat belt pretensioner system warning light



y Front seat belt pretensioners



y Related wiring
(With Front Passenger Occupant Classifi cation System)




y Front passenger air bag deactivation indicator light



y Front passenger occupant classifi cation sensor



y Front passenger occupant classifi cation module
The diagnostic module continuously monitors the system's readiness. This begins when the
ignition is switched ON and continues while the vehicle is being driven.
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