sensor CHRYSLER PT CRUISER 2008 1.G Owners Manual

The front airbag system consists of the following:•
Occupant Restraint Controller
•
Side Remote Acceleration Sensors (If equipped)
•
Airbag Warning Light
•
Driver Airbag
•
Passenger Airbag
•
Front Seat Mounted Side Airbags (If equipped)
•
Steering Wheel and Column
•
Instrument Panel
•
Interconnecting Wiring
•
Knee Impact Bolsters
•
Driver Inflatable Knee Blocker
•
Front Acceleration Sensors
•
Driver and Front Passenger Seat Belt Pretensioners
•
Occupant Classification System (OCS) for the Front
Passenger Seat
Occupant Classification Module

Passenger Airbag Disable (PAD) Indicator Light

Weight Sensors
How The Airbag System Works
•
TheOccupant Restraint Controller (ORC) determines
if a frontal collision is severe enough to require the
airbags to inflate. The front airbag inflators are de-
signed to provide different rates of airbag inflation
from direction provided by the ORC. The ORC may
also modify the rate of inflation based on the occupant
size provided by the Occupant Classification Module.
The ORC will not detect roll over.THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 59
2

The ORC also monitors the readiness of the electronic
parts of the system whenever the ignition switch is in
the START or RUN positions. These include all of the
items listed above except the steering wheel and
column, and knee bolsters. If the key is in the OFF
position, in the ACC position, or not in the ignition,
the airbags are not on and will not inflate.
During a moderate-to-severe rear impact the ORC may
deploy the seat belt pretensioners alone. Also, the ORC turns on the AIRBAG warning
light and PAD indicator light in the instrument
panel for 6 to 8 seconds for a self-check when
the ignition is first turned on. After the self-
check, the AIRBAG warning light will turn off. The PAD
indicator light will function normally (Refer to Passen-
ger Airbag Disable (PAD) Indicator Light in this section).
If the ORC detects a malfunction in any part of the
system, it turns on the AIRBAG warning light either
momentarily or continuously. A single chime will sound
if the light comes on again after initial start up.
WARNING!
Ignoring the AIRBAG light in your instrument panel
could mean you won’t have the airbags to protect you
in a collision. If the light does not come on, stays on
after you start the vehicle, or if it comes on as you
drive, have the airbag system checked right away.•
The Occupant Classification System (OCS) is part of
a Federally regulated safety system required for this
vehicle. It is designed to turn off the front passenger
airbag for occupants that weigh less than a very small
adult.
NOTE: Children 12 years and under should always ride
buckled up in a rear seat in an appropriate child restraint.
•
The OCS classifies an occupant using weight sensors
mounted in the base of the front passenger seat. Any
60 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

or instrument panel), the weight sensors in the seat may
not properly classify the occupant. Objects lodged under
the seat or between the seat and the center console can
prevent the occupant’s weight from being measured
properly and may result in the occupant being improp-
erly classified. Ensure that the front passenger seat back
does not touch anything placed on the second row of
seats because this can also affect occupant classification.
Also, if you fold down the seats in the second row check
to be sure they don’t touch the front passenger seat.
If the front passenger seat is damaged in any way, it
should only be serviced by an authorized dealer. If the
seat is removed (or even if the seat attachment bolts are
loosened or tightened in any way), take the vehicle to an
authorized dealer.
If there is a fault present in the OCS, the Airbag Warning
Light (a red light located in the center of the instrument
cluster directly in front of the driver) will be turned on.This indicates that you should take the vehicle to an
authorized dealer. The Airbag Warning Light is turned on
whenever there is fault that can affect the operation of the
airbag system. If there is a fault present in the OCS, both
the PAD Indicator Light and the Airbag Warning Light
are illuminated to show that the passenger airbag is
turned off until the fault is cleared. If an object is lodged
under the seat and interferes with operation of the weight
sensors, a fault will occur which turns on both the PAD
Indicator Light and the Airbag Warning Light. Once the
lodged object is removed, the fault will be automatically
cleared after a short period of time.
•
The
Driver and Passenger Airbag/Inflator Units are
located in the center of the steering wheel and the right
side of the instrument panel. When the ORC detects a
collision requiring the airbags, it signals the inflator
units. A large quantity of nontoxic gas is generated to
inflate the front airbags. Different airbag inflation ratesTHINGS TO KNOW BEFORE STARTING YOUR VEHICLE 63
2

may be possible based on collision severity and occu-
pant size. The steering wheel hub trim cover and the
upper right side of the instrument panel separate and
fold out of the way as the bags inflate to their full size.
The bags fully inflate in about 50 - 70 milliseconds.
This is about half of the time it takes to blink your eyes.
The bags then quickly deflate while helping to restrain
the driver and front passenger. The driver’s front
airbag gas is vented through vent holes in the sides of
the airbag. The passenger’s front airbag gas is vented
through vent holes in the sides of the airbag. In this
way the airbags do not interfere with your control of
the vehicle.
•
TheOccupant Classification Module (OCM) is lo-
cated beneath the front passenger seat. The OCM
classifies the occupant into categories based on the
measurements made by the seat weight sensors. The
OCM communicates with the Occupant Restraint Con-
troller (ORC). The ORC uses the occupant category to determine whether the front passenger airbag should
be turned off. It also determines the rate of airbag
inflation during a collision.
•
Your vehicle has four
Weight Sensorslocated between
the seat and the floor pan. The weight sensors measure
applied weight and transfers that information to the
OCM.
•
The Side Impact (SRS) Seat Mounted Side Airbags
(If equipped) are designed to activate only in certain
side collisions.
The ORC module determines if a side collision is
severe enough to require the side airbags to inflate.
The side airbag control module will not detect roll
over, front or rear collisions.
64 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

The ORC Module monitors the readiness of the electronic
parts of the system whenever the ignition switch is in the
START or ON positions. These include all of the items
previously mentioned.
In moderate to severe side collisions, the side airbag
inflator on the crash side of the vehicle is triggered,
releasing a quantity of nontoxic gas. The inflating side
airbag exits through the seat seam into the space between
the occupant and the door. The side airbag moves at a
very high speed and with such a high force, that it could
injure you if you are not seated properly, or if items are
positioned in the area where the side airbag inflates. This
especially applies to children.
NOTE:If your vehicle is equipped with left and right
side curtain air bags, do not install a clothing bar
mounted to the coat hooks (or similarly mounted). A
clothing bar will impede the proper performance of the
bags.
•
When the ORC and the impact sensors detect a
collision requiring the Driver Inflatable Knee
Blocker, it signals the inflator unit. A quantity of
nontoxic gas is generated to inflate the Driver Inflat-
able Knee Blocker. The Driver Inflatable Knee Blocker
inflates rearward towards the driver’s knees to help
protect the knees and position you for the best inter-
action with the front airbag. The Driver Inflatable
Knee Blocker fully inflates in about 50 milliseconds,
this is only about half of the time it takes you to blink
your eyes. It then quickly deflates while helping to
protect the driver’s knees.
•
The Knee Impact Bolsters help protect the knees, and
position everyone for the best interaction with the
front airbag.THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 65
2

Airbag LightYou will want to have the airbags ready to inflate for your
protection in a collision. While the airbag system is
designed to be maintenance free, if any of the following
occurs, have an authorized dealer service the system
immediately.•
The AIRBAG light does not come on during the six to
eight seconds when the ignition switch is first turned
on.
•
The light remains on after the six to eight second
interval.
•
The light comes on and remains on while driving.
Event Data Recorder (EDR)In the event of an accident, your vehicle is designed to
record up to five - seconds of specific vehicle data
parameters (see list below) in an event data recorderprior to the moment of airbag deployment, or near-
deployment, and up to a quarter second of high-speed
deceleration data during and/or after airbag deployment
or near-deployment. EDR data are ONLY recorded if an
airbag deploys, or nearly deploys, and are otherwise
unavailable.
NOTE:
1. A near-deployment event occurs when the airbag
sensor detects severe vehicle deceleration usually indica-
tive of a crash, but not severe enough to warrant airbag
deployment.
2. Under certain circumstances, EDR data may not be
recorded (e.g., loss of battery power).
In conjunction with other data gathered during a com-
plete accident investigation, the electronic data may be
used by DaimlerChrysler and others to learn more about
the possible causes of crashes and associated injuries in
order to assess and improve vehicle performance. In70 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

WARNING!
•
Relying on the airbags alone could lead to more
severe injuries in a collision. The airbags work
with your seat belt to restrain you properly. In
some collisions the airbags won’t deploy at all.
Always wear your seat belts even though you have
airbags.
•
Being too close to the steering wheel or instrument
panel during front airbag deployment could cause
serious injury. Airbags need room to inflate. Sit
back, comfortably extending your arms to reach
the steering wheel or instrument panel.
•
If the vehicle has Head/Thorax airbags, they also
need room to inflate. Do not lean against the door.
Sit upright in the center of the seat.The front airbag system consists of the following:
•
Occupant Restraint Controller
•
Side Remote Acceleration Sensors (If Equipped)
•
Airbag Warning Light
•
Driver Airbag
•
Passenger Airbag
•
Front Seat Mounted Head/Thorax Airbags (if
equipped)
•
Steering Wheel and Column
•
Instrument Panel
•
Driver and Front Passenger Knee Impact Blockers
•
Front Acceleration Sensors
•
Driver and Front Passenger Seat Belt Pretensioners
•
Passenger Airbag Disable (PAD) Indicator Light
94 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

The Head/Thorax airbag system (if equipped) consists
of the following:•
AIRBAG Readiness Light (shared with the front airbag
system)
•
Front Seat— side mounted Head/Thorax Airbags — if
equipped
•
Airbag Control Module (shared with the front airbag
system)
•
Side impact sensors
How The Airbag System Works
•
TheOccupant Restraint Controller (ORC) determines
if a frontal collision is severe enough to require the
airbags to inflate. The front airbag inflators are de-
signed to provide different rates of airbag inflation
from direction provided by the ORC. The ORC may also modify the rate of inflation based on the occupant
size provided by the Occupant Classification Module.
The ORC will not detect roll over.
The ORC also monitors the readiness of the electronic
parts of the system whenever the ignition switch is in
the START or RUN positions. These include all of the
items listed above except the steering wheel and
column, and knee impact blockers. If the key is in the
OFF position, in the ACC position, or not in the
ignition, the airbags are not on and will not inflate.
During a moderate-to-severe rear impact the ORC may
deploy the seat belt pretensioners alone. Also, the ORC turns on the AIRBAG warning
light and PAD indicator light in the instrument
panel for six to eight seconds for a self-check
when the ignition is first turned on. After the
self-check, the AIRBAG warning light will turn off. The
PAD indicator light will function normally (Refer to
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 95
2

Passenger Airbag Disable (PAD) System
Front Passenger Indicator Light Airbag Status
Adult OFFON
Child ONOFF
Grocery Bags,
Heavy Briefcases
and Other Rela-
tively Light Ob-
jects ON
OFF
Empty or Very
Small Objects OFF*
OFF
* Since the system senses weight, some small objects
will turn the PAD Indicator Light on.
Drivers and adult passengers should verify that the PAD
Indicator Light is not illuminated when an adult is riding
in the front passenger seat. If an adult occupant’s weight
is transferred to another part of the vehicle (like the door
or instrument panel), the weight sensors in the seat may not properly classify the occupant. Objects lodged under
the seat or between the seat and the center console can
prevent the occupant’s weight from being measured
properly and may result in the occupant being improp-
erly classified. Ensure that the front passenger seat back
does not touch anything placed on the second row of
seats because this can also affect occupant classification.
Also, if you fold down the seats in the second row check
to be sure they don’t touch the front passenger seat.
If the front passenger seat is damaged in any way, it
should only be serviced by an authorized dealer. If the
seat is removed (or even if the seat attachment bolts are
loosened or tightened in any way), take the vehicle to an
authorized dealer.
If there is a fault present in the Airbag Warning Light (a
red light located in the center of the instrument cluster
directly in front of the driver) will be turned on. This
98 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

indicates that you should take the vehicle to an autho-
rized dealer. The Airbag Warning Light is turned on
whenever there is fault that can affect the operation of the
airbag system. If there is a fault present in the PAD
Indicator Light the Airbag Warning Light remains illu-
minated to show that the passenger airbag is turned off
until the fault is cleared. If an object is lodged under the
seat and interferes with operation of the weight sensors,
a fault will occur which turns on both the PAD Indicator
Light and the Airbag Warning Light. Once the lodged
object is removed, the fault will be automatically cleared
after a short period of time.•
TheDriver and Passenger Airbag/Inflator Units are
located in the center of the steering wheel and the right
side of the instrument panel. When the ORC detects a
collision requiring the airbags, it signals the inflator
units. A large quantity of nontoxic gas is generated to
inflate the front airbags. Different airbag inflation rates may be possible based on collision severity and occu-
pant size. The steering wheel hub trim cover and the
upper right side of the instrument panel separate and
fold out of the way as the bags inflate to their full size.
The bags fully inflate in about 50 - 70 milliseconds.
This is about half of the time it takes to blink your eyes.
The bags then quickly deflate while helping to restrain
the driver and front passenger. The driver’s and pas-
senger’s front airbag gas is vented through holes in the
sides of the airbag. In this way the airbags do not
interfere with your control of the vehicle.
•
The
Occupant Classification Module (OCM) is lo-
cated beneath the front passenger seat. The OCM
classifies the occupant into categories based on the
measurements made by the seat weight sensors. The
OCM communicates with the ORC. The ORC uses the
occupant category to determine whether the front
passenger airbag should be turned off. It also deter-
mines the rate of airbag inflation during a collision.THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 99
2