2009 CHRYSLER PT CRUISER sensor

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.
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THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 49

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.
•TheOccupant Classification System (OCS) is part of a
Federally regulated safety system required for this ve-
hicle. 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
weight on the seat will be sensed by the system.
Objects hanging on the seat or other passengers push-
ing down on the seat will also be sensed. The weight of
50 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

WARNING!
Never place a rear facing infant seat in front of an
airbag. A deploying passenger airbag can cause death
or serious injury to a child in a rear facing infant seat.
Front PassengerSeat Occupant Passenger Air-
bag Disable
(PAD) Indicator Light Airbag Status
Adult OFF ON Child ON OFF
Grocery Bags,
Heavy Briefcases and Other Rela-
tively Light Ob- jects ON OFF
Front Passenger
Seat Occupant Passenger Air-
bag Disable
(PAD) Indicator Light Airbag Status
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
52 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

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 lodgedunder 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 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 front
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THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 53

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.
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
54 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

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.
The front passenger seat assembly contains critical com-
ponents that affect the front passenger airbag deploy-
ment. Correctly functioning front passenger seat compo-
nents are critical for the Occupant Classification System
(OCS) to properly classify the front passenger and calcu-
late the proper airbag deployment. Do not make any
modifications to the front passenger seat components,
assembly, or to the seat cover.2
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Event Data Recorder (EDR)
In the event of an accident, your vehicle is designed to
record up to five seconds of specific vehicle data param-
eters (see the following list) in an event data recorder
prior 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 deploy-
ment. 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 Chrysler LLC and others to learn more about the
possible causes of crashes and associated injuries in order
to assess and improve vehicle performance. In addition
to crash investigations initiated by Chrysler LLC, such
investigations may be requested by customers, insurance
carriers, government officials, and professional crash
researchers, such as those associated with universities,
and with hospital and insurance organizations.
In the event that an investigation is undertaken by
Chrysler LLC (regardless of initiative), the company or its
designated representative will first obtain permission of
the appropriate custodial entity for the vehicle (usually
the vehicle owner or lessee) before accessing the elec-
tronic data stored, unless ordered to download data by a
court with legal jurisdiction (i.e., pursuant to a warrant).
A copy of the data will be provided to the custodial entity
60 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

CAUTION!
The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures and
warning have been established for the tire size
equipped on your vehicle. Undesirable system opera-
tion or sensor damage may result when using re-
placement equipment that is not of the same size,
type, and/or style. Aftermarket wheels can cause
sensor damage. Do not use tire sealant from a can, or
balance beads if your vehicle is equipped with a
TPMS, as damage to the sensors may result.
8. Odometer/Trip Odometer
The odometer shows the total distance the vehicle has
been driven. U.S. federal regulations require that upon
transfer of vehicle ownership, the seller certify to the
purchaser the correct mileage that the vehicle has been
driven. Therefore, if the odometer reading is changed during repair or replacement, be sure to keep a record of
the reading before and after the service so that the correct
mileage can be determined.
Vehicle Warning Messages
When the appropriate conditions exist, “door,” “gate,”
“LoW TirE,” “CHAngE OIL”or “GASCAP” will display
in the odometer.
NOTE:
If the instrument cluster is equipped with the
optional Electronic Vehicle Information Center (EVIC),
then all warnings including ”Low Tire,” “Door Ajar” and
“Liftgate Ajar” will only display in the EVIC. (Refer to
“Electronic Vehicle Information Center (EVIC)” in this
section for specific messages).
LoW TirE
When the appropriate condition exists, the odometer
display will toggle between LoW and TirE for three
cycles.
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UNDERSTANDING YOUR INSTRUMENT PANEL 167