CHRYSLER PT CRUISER 2008 1.G Repair 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
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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

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
an adult will cause the system to turn the airbag on. In
this case, the OCS has classified the occupant of the
seat as an adult. An adult occupant needs to sit in a
normal position (with their feet on or near the floor) in
order to be properly classified. Reclining the seat back
too far may change how an occupant is classified by
the OCS.
•
ThePassenger Airbag Disable (PAD) Indicator Light
(an amber light located in the center of the instrument
panel) tells the driver and front passenger when the
front passenger airbag is turned off. The PAD Indica-
tor lamp illuminates the words PASS AIR BAG OFF
to show that the front passenger airbag will not inflate
during a collision requiring airbags. When the right
front passenger seat is empty or when very light
objects are placed on the seat, the passenger air bag will not inflate even though the Passenger Airbag
Disable (PAD) indicator lamp is not illuminated.
•
The PAD indictor light should not be illu-
minated when an adult passenger is prop-
erly seated in the front passenger seat. In
this case, the air bag is ready to be inflated if
a collision requiring an airbag occurs.
For all other occupants, the PAD indicator light will be
illuminated indicating that the front passenger airbag
is turned off and will not inflate.Passenger Airbag Disabled Light
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 61
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NOTE:Even though this vehicle is equipped with an
occupant classification system, children 12 years and
under should always ride buckled up in a rear seat in an
appropriate child restraint (see section on child re-
straints).
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 Passenger Seat 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
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
62 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
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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
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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.
The following requirements must be strictly adhered to:•
Do not modify the front passenger seat assembly or
components in any way.
•
Do not modify the front seat center console or center
position seat in any way.
•
Do not use prior or future model year seat covers not
designated for the specific model being repaired. Al-
ways use the correct seat cover specified for the vehicle.
•
Do not replace the seat cover with an aftermarket seat
cover.
•
Do not add a secondary seat cover other than those
approved by DaimlerChrysler/Mopar.
•
At no time should any supplemental restraint system
(SRS) component or SRS related component or fastener
be modified or replaced with any part except those
which are approved by DaimlerChrysler/Mopar.
WARNING!
Unapproved modifications or service procedures to
the front passenger seat assembly, its related compo-
nents, or seat cover may inadvertently change the
airbag deployment in case of a frontal crash. This
could result in death or serious injury to the front
seat passenger if the vehicle is involved in an acci-
dent. A modified vehicle may not comply with re-
quired Federal Motor Vehicle Safety Standards
(FMVSS).
66 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

If A Deployment OccursThe airbag systems are designed to deploy when the
airbag control modules detect a moderate-to-severe col-
lision, to help restrain the driver and front passenger, and
then immediately deflate.
NOTE:
A frontal collision that is not severe enough to
need airbag protection will not activate the system. This
does not mean something is wrong with the airbag system.
If you do have a collision which deploys the airbags, any
or all of the following may occur:•
The nylon airbag material may sometimes cause abra-
sions and/or skin reddening to the driver and front
passenger as the airbags deploy and unfold. The
abrasions are similar to friction rope burns or those
you might get sliding along a carpet or gymnasium
floor. They are not caused by contact with chemicals.
They are not permanent and normally heal quickly.
However, if you haven’t healed significantly within a few days, or if you have any blistering, see your doctor
immediately. As the airbags deflate you may see some
smoke-like particles. The particles are a normal by-
product of the process that generates the nontoxic gas
used for airbag inflation. These airborne particles may
irritate the skin, eyes, nose, or throat. If you have skin
or eye irritation, rinse the area with cool water. For
nose or throat irritation, move to fresh air. If the
irritation continues, see your doctor. If these particles
settle on your clothing, follow the garment manufac-
turer’s instructions for cleaning.
•
It is not advisable to drive your vehicle after the
airbags have deployed. If you are involved in another
collision, the airbags will not be in place to protect you.THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 67
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WARNING!
Deployed airbags and seat belt pretensioners cannot
protect you in another collision. Have the airbags,
seat belt pretensioners, and the front passenger seat
belt retractor assembly, replaced by an authorized
dealer as soon as possible. Also, have the Occupant
Classification System serviced as well.
Maintaining Your Airbag System
WARNING!
Modifications to any part of the airbag system could
cause it to fail when you need it. You could be
injured if the airbag system is not there to protect
you. Do not modify the components or wiring, in-
cluding adding any kind of badges or stickers to the
steering wheel hub trim cover or the upper right side
of the instrument panel. Do not modify the front
bumper, vehicle body structure, or add aftermarket
side steps or running boards.
68 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE