1998 CHEVROLET ASTRO sensor

Downloaded from www.Manualslib.com manuals search engine How does an air bag restrain?
In moderate to severe frontal or near-frontal collisions,
even belted occupants can contact the steering wheel
or
the instrument panel. Air bags supplement the protection
provided by safety belts. Air bags distribute the force of
the impact more evenly over the occupant’s upper body,
stopping the occupant more gradually. But air bags would
not help
you in many types of collisions, including
rollovers, rear impacts and side impacts, primarily
because
an occupant’s motion is not toward those air
bags. Air bags should never be regarded as anything
more than a supplement
to safety belts, and then only in
moderate to severe frontal or near-frontal collisions.
What will you see after an air bag inflates?
After an air bag inflates, it quickly deflates, so quickly
that some people may not even realize
the air bag
inflated. Some components
of the air bag module -- the
steering wheel hub for the driver’s air bag, or the
instrument panel for
the right front passenger’s
bag
-- will be hot for a short time. The parts of the bag
that come into contact with you may be warm, but not
too hot to touch. There will be some smoke and dust
coming from vents in the deflated air bags. Air bag
inflation doesn’t prevent the driver from seeing or from
being able
to steer the vehicle, nor does it stop people
from leaving the vehicle.
-
I
/A CAUTION:
When an air bag inflates, there is dust in the air.
This dust could cause breathing problems for
people with a history of asthma or other
breathing trouble. To avoid this, everyone in the
vehicle should get out as soon as
it is safe to do so.
If you have breathing problems but can’t get out
of the vehicle after an air bag inflates, then get
fresh air by opening a window or door.
Air bags are designed to inflate only once. After they
inflate, you’ll need some new parts for your air bag
system.
If you don’t get them, the air bag system
won’t be there to help protect you in another crash.
A new system
will include air bag modules and
possibly other parts. The service manual for your
vehicle covers the need to replace other parts.
Your vehicle is equipped with a crash sensing and
diagnostic module, which records information
about the air bag system. The module records
information about
the readiness of the system,
when the sensors are activated and driver’s safety
belt usage at deployment.
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Downloaded from www.Manualslib.com manuals search engine 0 Let only qualified technicians work on your air bag
system. Improper service can mean that your
air bag
system won’t work properly. See your dealer for service.
NOTICE:
If you damage the covering for the driver’s or the
right front passenger’s air bag, the bag may not
work properly. You may have to replace the
air
bag module in the steering wheel or both the air
bag module and the instrument panel for the
right front passenger’s air bag.
Do not open or
break the air bag coverings.
If your vehicle ever gets into a lot of water
-- such as
water up to the carpeting or higher
-- or if water enters
your vehicle and
soaks the carpet, the air bag controller
can be soaked and ruined. If this ever happens, and then
you start your vehicle, the damage could make the air
bags inflate, even if there’s no crash. You would have to
replace the air bags as well as the sensors and related
parts. If you vehicle is ever in a flood, or if it’s exposed
to water that
soaks the carpet, you can avoid needless
repair costs by turning off the vehicle immediately.
Don’t let anyone start the vehicle, even to tow it, unless
the battery cables are first disconnected.
Servicing Your Air Bag-Equipped Vehicle
Air bags affect how your vehicle should be serviced.
There are parts of the air bag system in several places
around your vehicle. You don’t want the system to
inflate while someone is working on your vehicle. Your
dealer and the
GM Service Manual have information
about servicing your vehicle and the air bag system.
To
purchase a service manual, see “Service and Owner
Publications” in the Index.
For up to
10 minutes after the ignition key is
turned
off and the battery is disconnected, an air
bag can still inflate during improper service. You
can be injured if you are close to an air bag when
it inflates. Avoid wires wrapped with yellow tape
or yellow connectors. They are probably part of
the air bag system. Be sure to follow proper
service procedures, and make sure the person
performing work for you is qualified to
do so.
The air bag system does not need regular maintenance.
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Downloaded from www.Manualslib.com manuals search engine Adding Equipment to Your Air
Bag-Equipped Vehicle
@ If I add a push bumper or a bicycle rack to the
front of my vehicle, will it keep the air bags
from working properly?
A: As long as the push bumper or bicycle rack is
attached to your vehicle
so that the vehicle’s basic
structure isn’t changed, it’s
not likely to keep the
air bags from working properly in a crash.
@ Is there anything I might add to the front of the
vehicle that could keep the air bags from
working properly?
A: Yes. If y01- - Jd things that change your vehicle’s
frame, bumper system, front end sheet metal or
height, they may keep the air bag system from
working properly. Also, the
air bag system may not
work properly if
you relocate any of the air bag
sensors. If you have any questions about this,
you
should contact Customer Assistance before you
modify your vehicle. (The phone numbers and
addresses for Customer Assistance are in Step Two
of
the Customer Satisfaction Procedure in this manual.
See “Customer Satisfaction Procedure”
in the Index.)
Rear Seat Passengers
It’s very important for rear seat passengers to buckle up!
Accident statistics show that unbelted people in
the rear
seat are hurt more often in crashes than those who are
wearing safety belts.
Rear passengers who aren’t safety belted can be thrown
out of the vehicle in a crash. And they can strike others
in the vehicle who are wearing safety belts.
Rear Seat Outside Passenger Positions

Downloaded from www.Manualslib.com manuals search engine Gages can indicate when there may be or is a problem
with one
of your vehicle’s functions. Often gages and
warning lights work together to
let you know when
there’s
a problem with your vehicle.
When
one of the warning lights comes on and stays on
when you are driving, or when one
of the gages shows
there may be
a problem, check the section that tells you
what
to do about it. Please follow this manual’s advice.
Waiting to do repairs
can be costly -- and even
dangerous. So please get to know your warning lights
and gages. They’re a big help.
Safety Belt Reminder Light
When the key is turned to RUN or START, a tone will
come
on for about eight seconds to remind people to
fasten their
safety belts, unless the driver’s safety belt is
already buckled.
The safety belt light
will
also come on and stay on
for about 20 seconds,
then it will flash for about
55 seconds.
Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows AIR BAG. The system checks the
air bag’s electrical system for malfunctions. The light
tells
you if there is an electrical problem. The system
check includes
the air bag sensors, the air bag modules,
the wiring and the crash sensing and diagnostic module.
For more information on the air bag system, see “Air
Bag”
in the Index.
AIR
This light will come on
when you start your engine,
and
it will flash for a few
seconds. Then the light
should go
out. This means
the system is ready.
If the air bag readiness light stays on after you start the
engine or comes
on when you are driving, your air bag
system may
not work properly. Have your vehicle
serviced right away.
The air bag readiness light should flash for a few
seconds when
you turn the ignition key to RUN. If the
light doesn’t come on then, have it fixed
so it will be
ready
to warn you if there is a problem. If the driver’s belt is already buckled, neither the tone
nor the light will come on.
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Downloaded from www.Manualslib.com manuals search engine Fuse/Circuit Breaker Usage
UPFIT-BATT Upfitter Battery Power Stud, Trailer
UPFIT-ACCY Upfitter Accessory Relay
Wiring
Harness
Spare
Fuse Puller*
Spare
Spare
ECM-B
HORN
A/C COMP
RR DEFOG
ENG-I
Fuse/Circuit Breaker Usage
IGN-E
ECM-I
Not used
LIGHTING
Not used
Not used Fuel Pump Relay and Motor, VCM,
Oil Pressure Switch/Sender
Horn Relay and Horn
A/C Enable Relay and Compressor
Heater-A/C Control Selector Switch,
Rear Window Defogger
Oxygen Sensors, Camshaft Position
Sensor, Mass Air Flow Sensor,
Evaporative Emission Canister Purge
Solenoid, Linear EGR Valve
Solenoid, VCM EGR HI BATT
IGN A
IGN B
ABS
NC
RR HTRIAC
Spare A/C
Enable Relay Coil
Fuel Injectors
1-6, Crankshaft
Position Sensor, VCM, Coil Driver
Module (EST)
Park Lamps Fuse, DRL Fuse,
Headlamp and Panel Dimmer Switch
SteeringBecurity Fuse, Courtesy
Fuse, ACSY CB, Stop/Hazard Fuse,
Auxiliary Power Fuse, Cigar Lighter
Fuse, Radio Battery Fuse
Starter Relay, Ignition Switch
Ignition Switch
Electronic Brake Control Module Blower Motor Resistor, Blower
Relay
Auxiliary Heater NC Relay
Not used
*A fuse puller is included
in the underhood electrical
center. You will also find spare fuses.
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