sensor FORD EXPLORER 2006 4.G User Guide

Air bags can kill or injure a child in a child seat.NEVERplace a
rear-facing child seat in front of an active air bag. If you must
use a forward-facing child seat in the front seat, move the seat all the
way back.
Always transport children 12 years old and under in the back
seat and always properly use appropriate child restraints.
The front passenger sensing system can automatically turn off the front
passenger airbag and passenger seat-mounted side airbag. The system is
designed to help protect small (child size) occupants from frontal airbag
deployments when they are seated or restrained in the front passenger
seat contrary to proper child-seating or restraint usage
recommendations. Even with this technology, parents areSTRONGLY
encouraged to always properly restrain children in the rear seat. The
sensor also turns off the passenger front airbag and passenger
seat-mounted side airbag (if equipped) when the passenger seat is empty
and the safety belt is unbuckled, or when a child or a small person
occupies the front passenger seat and the safety belt is unbuckled.
Front safety belt usage sensors
The front safety belt usage sensors detect whether or not the driver and
front outboard passenger safety belts are fastened. This information
allows your Personal Safety Systemyto tailor the airbag deployment and
safety belt pretensioner activation depending upon safety belt usage.
Refer toSafety restraintssection in this chapter.
Front safety belt pretensioners
The safety belt pretensioners at the front outboard seating positions are
designed to tighten the safety belts firmly against the occupant's body
during frontal collisions, and in side collisions and rollovers when the
vehicle is equipped with the optional Safety Canopyysystem. This
maximizes the effectiveness of the safety belts. In frontal collisions, the
safety belt pretensioners can be activated alone or, if the collision is of
sufficient severity, together with the front airbags.
Front safety belt energy management retractors
The front outboard safety belt energy management retractors allow webbing
to be pulled out of the retractor in a gradual and controlled manner in
response to the occupant's forward momentum. This helps reduce the risk
of force-related injuries to the occupant's chest by limiting the load on the
occupant. Refer toSafety restraintssection in this chapter.
Seating and Safety Restraints
128

Determining if the Personal Safety SystemYis operational
The Personal Safety Systemyuses a warning light in the instrument
cluster or a back-up tone to indicate the condition of the system. Refer
to theWarning lights and chimessection in theInstrument Cluster
chapter. Routine maintenance of the Personal Safety Systemyis not
required.
The Restraints Control Module (RCM) monitors its own internal circuits
and the circuits for the airbag supplemental restraints, crash sensor(s),
safety belt pretensioners, front safety belt buckle sensors, and the driver
seat position sensor. In addition, the RCM also monitors the restraints
warning light in the instrument cluster. A difficulty with the system is
indicated by one or more of the following:
²The warning light will either flash or stay lit.
²The warning light will not illuminate immediately after the ignition is
turned on.
²A series of five beeps will be heard. The tone pattern will repeat
periodically until the problem and warning light are repaired.
If any of these things happen, even intermittently, have the Personal
Safety Systemyserviced at an authorized dealer immediately. Unless
serviced, the system may not function properly in the event of a
collision.
Safety restraints precautions
Always drive and ride with your seatback upright and the lap
belt snug and low across the hips.
To reduce the risk of injury, make sure children sit in the back
seat where they can be properly restrained.
Never let a passenger hold a child on his or her lap while the
vehicle is moving. The passenger cannot protect the child from
injury in a collision.
All occupants of the vehicle, including the driver, should always
properly wear their safety belts, even when an airbag
supplemental restraint system (SRS) is provided.
Seating and Safety Restraints
129

²Allow the belt to retract. As the belt retracts, you will hear a clicking
sound. This indicates the safety belt is now in the automatic locking
mode.
How to disengage the automatic locking mode
Unbuckle the combination lap and shoulder belt and allow it to retract
completely to disengage the automatic locking mode and activate the
vehicle sensitive (emergency) locking mode.
After any vehicle collision, the combination lap and shoulder belt
system at all passenger seating positions must be checked by an
authorized dealer to verify that the ªautomatic locking retractorº
feature for child seats is still functioning properly, in addition to other
checks for proper safety belt system function.
BELT AND RETRACTOR ASSEMBLY MUST BE REPLACED if the
safety belt assembly ªautomatic locking retractorº feature or any
other safety belt function is not operating properly. In addition, all safety
belts should be checked for proper function. Failure to replace the belt
and retractor assembly could increase the risk of injury in collisions.
Safety belt pretensioner
Your vehicle is equipped with safety belt pretensioners at the driver and
right front passenger seating positions.
The safety belt pretensioner removes some slack from the safety belt
system at the start of a crash. The safety belt pretensioner uses the
same crash sensor system as the front airbags and Safety Canopyy
system (if equipped). When the safety belt pretensioner deploys, the lap
and shoulder belt are tightened.
When the optional Safety Canopyysystem and/or the front airbags are
activated, the safety belt pretensioners for the driver and right front
passenger seating positions will be activated when the respective seatbelt
is properly buckled.
The driver and front passenger seat belt system (including
retractors, buckles and height adjusters) must be replaced if the
vehicle is involved in a collision that results in deployment of front
airbags, seat-mounted side airbags and Safety Canopyy(if equipped),
and safety belt pretensioners.
Refer to theSafety belt maintenancesection in this chapter.
Seating and Safety Restraints
133

All occupants of the vehicle, including the driver, should always
properly wear their safety belts, even when an air bag
supplemental restraint system (SRS) is provided.
Always transport children 12 years old and under in the back
seat and always properly use appropriate child restraints.
The National Highway Traffic Safety Administration (NHTSA)
recommends a minimum distance of at least 10 inches (25 cm)
between an occupant's chest and the driver airbag module.
Never place your arm over the airbag module as a deploying air
bag can result in serious arm fractures or other injuries.
To properly position yourself away from the airbag:
²Move your seat to the rear as far as you can while still reaching the
pedals comfortably.
²Recline the seat slightly one or two degrees from the upright position.
Do not put anything on or over the airbag module. Placing
objects on or over the airbag inflation area may cause those
objects to be propelled by the airbag into your face and torso causing
serious injury.
Do not attempt to service, repair, or modify the airbag
supplemental restraint systems or its fuses. See your authorized
dealer.
Modifications to the front end of the vehicle, including frame,
bumper, front end body structure and non-Ford tow hooks may
effect the performance of the airbag sensors increasing the risk of
injury. Do not modify the front end of the vehicle with anything other
than authorized Ford accessories for your vehicle.
Additional equipment may affect the performance of the airbag
sensors increasing the risk of injury. Please refer to theBody
Builders Layout Bookfor instructions about the appropriate
installation of additional equipment.
Seating and Safety Restraints
142

Children and airbags
Children must always be properly
restrained. Accident statistics
suggest that children are safer when
properly restrained in the rear
seating positions than in the front
seating position. Failure to follow
these instructions may increase the
risk of injury in a collision.
Airbags can kill or injure a
child in a child seat.
NEVERplace a rear-facing child
seat in front of an active airbag. If
you must use a forward-facing
child seat in the front seat, move
the seat all the way back.
How does the airbag supplemental restraint system work?
The airbag SRS is designed to
activate when the vehicle sustains
longitudinal deceleration sufficient
to cause the sensors to close an
electrical circuit that initiates airbag
inflation.
The fact that the airbags did not
inflate in a collision does not mean
that something is wrong with the
system. Rather, it means the forces
were not of the type sufficient to
cause activation. Front airbags are designed to activate in frontal and
near-frontal collisions, not rollover, side-impact, or rear-impacts unless
the collision causes sufficient longitudinal deceleration.
Seating and Safety Restraints
143

²one or more impact and safing sensors.
²a readiness light and tone.
²diagnostic module.
²and the electrical wiring which connects the components.
²Front passenger sensing system. Refer toFront passenger sensing
system.later in this chapter.
²ªPassenger airbag offº or ªpass airbag offº indicator lamp. Refer to
Front passenger sensing systemlater in this chapter.
The diagnostic module monitors its own internal circuits and the
supplemental airbag electrical system wiring (including the impact
sensors), the system wiring, the airbag system readiness light, the airbag
back up power and the airbag ignitors.
Front passenger sensing system
The front passenger sensing system is designed to meet the regulatory
requirements of Federal Motor Vehicle Safety Standard (FMVSS) 208
and is designed to disable (will not inflate) the front passenger's frontal
air bag under certain conditions.
The front passenger sensing system works with sensors that are part of
the front passenger's seat and safety belt. The sensors are designed to
detect the presence of a properly seated occupant and determine if the
front passenger's frontal air bag should be enabled (may inflate) or
disabled (will not inflate).
The front passenger sensing system will disable (will not inflate) the
front passenger's frontal air bag if:
²the front passenger seat is unoccupied, or has small/medium objects in
the front seat,
²the system determines that an infant is present in a rear-facing infant
seat that is installed according to the manufacturer's instructions,
²the system determines that a small child is present in a forward-facing
child restraint that is installed according to the manufacturer's
instructions,
²the system determines that a small child is present in a booster seat,
²a front passenger takes his/her weight off of the seat for a period of
time,
Seating and Safety Restraints
145

Do not attempt to service, repair, or modify the airbag SRS, its
fuses or the seat cover on a seat containing an airbag. See your
authorized dealer.
All occupants of the vehicle should always wear their safety belts
even when an airbag SRS is provided.
How does the side airbag system work?
The design and development of the side airbag system included
recommended testing procedures that were developed by a group of
automotive safety experts known as the Side Airbag Technical Working
Group. These recommended testing procedures help reduce the risk of
injuries related to the deployment of side airbags.
The side airbag system consists of
the following:
²An inflatable nylon bag (airbag)
with a gas generator concealed
behind the outboard bolster of
the driver and front passenger
seatbacks.
²A special seat cover designed to
allow airbag deployment.
²The same warning light,
electronic control and diagnostic
unit as used for the front airbags.
²Crash sensors located on the
front doors and C pillars (one
sensor on each pillar on each side
of the vehicle).
Side airbags, in combination with seat belts, can help reduce the risk of
severe injuries in the event of a significant side impact collision.
The side airbags are fitted on the outboard side of the seatbacks of the
front seats. In certain lateral collisions, the airbag on the side affected by
the collision will be inflated. If the front passenger sensing system
detects an empty seat, the front passenger seat-mounted side airbag will
be deactivated. The airbag was designed to inflate between the door
panel and occupant to further enhance the protection provided
occupants in side impact collisions.
Seating and Safety Restraints
151

The airbag SRS is designed to activate when the vehicle sustains lateral
deceleration sufficient to cause the sensors to close an electrical circuit
that initiates airbag inflation.
The fact that the airbags did not inflate in a collision does not mean that
something is wrong with the system. Rather, it means the forces were
not of the type sufficient to cause activation. Side airbags are designed
to inflate in side-impact collisions, not roll-over, rear-impact, frontal or
near-frontal collisions, unless the collision causes sufficient lateral
deceleration.
Several air bag system components get hot after inflation. Do not
touch them after inflation.
If the side airbag has
deployed,the airbag will
not function again. The side
airbag system (including the
seat) must be inspected and
serviced by an authorized
dealer .If the airbag is not
replaced, the unrepaired area will
increase the risk of injury in a
collision.
Safety CanopyYsystem (if equipped)
Do not place objects or
mount equipment on or
near the headliner at the siderail
that may come into contact with a
deploying Safety Canopyy. Failure
to follow these instructions may
increase the risk of personal injury
in the event of a collision.
Do not lean your head on the door. The Safety Canopyycould
injure you as it deploys from the headliner.
Seating and Safety Restraints
152

Do not attempt to service, repair, or modify the Safety Canopyy
system, its fuses, the A, B, or C pillar trim, or the headliner on a
vehicle containing a Safety Canopyy. See your authorized dealer.
All occupants of the vehicle including the driver should always
wear their safety belts even when an airbag SRS and Safety
Canopyysystem is provided.
To reduce risk of injury, do not obstruct or place objects in the
deployment path of the inflatable Safety Canopyy.
How does the Safety CanopyYsystem work?
The design and development of the
Safety Canopyysystem included
recommended testing procedures
that were developed by a group of
automotive safety experts known as
the Side Airbag Technical Working
Group. These recommended testing
procedures help reduce the risk of
injuries related to the deployment of
side airbags (including the Safety
Canopyy).
The Safety Canopyysystem
consists of the following:
²An inflatable nylon curtain with a
gas generator concealed behind
the headliner and above the doors
(one on each side of the vehicle).
²A headliner that will flex to open
above the side doors to allow Safety Canopyydeployment.
²The same warning light, electronic control and diagnostic unit as used
for the front airbags.
²Two side crash sensors mounted at the front doors (one on each side
of the vehicle).
²Two side crash sensors located at the c-pillar behind the rear doors
(one on each side of the vehicle).
²Roll over sensor in the restraints control module (RCM).
Seating and Safety Restraints
153

The Safety Canopyysystem, in combination with safety belts, can help
reduce the risk of severe injuries in the event of a significant side impact
collision or rollover event.
Children 12 years old and under should always be properly restrained in
the second or third row seats (if equipped). The Safety Canopyywill
not interfere with children restrained using a properly installed child or
booster seat because it is designed to inflate downward from the
headliner above the doors along the side window openings.
The Safety Canopyysystem is designed to activate when the vehicle
sustains lateral deceleration sufficient to cause the side crash sensor to
close an electrical circuit that initiates Safety Canopyyinflation or when
a certain likelihood of a rollover event is detected by the rollover sensor.
The Safety Canopyyis mounted to the roof side-rail sheet metal, behind
the headliner, above the first and second row seats. In certain lateral
collisions or rollover events, the Safety Canopyysystem will be
activated, regardless of which seats are occupied. The Safety Canopyyis
designed to inflate between the side window area and occupants to
further enhance protection provided in side impact collisions and rollover
events.
The fact that the Safety Canopyysystem did not activate in a collision
does not mean that something is wrong with the system. Rather, it
means the forces were not of the type sufficient to cause activation. The
Safety Canopyyis designed to inflate in certain side impact collisions or
rollover events, not in rear impact, frontal or near-frontal collisions,
unless the collision causes sufficient lateral deceleration or rollover
likelihood.
Several Safety Canopyysystem components get hot after
inflation. Do not touch them after inflation.
Seating and Safety Restraints
154