1999 CHEVROLET MONTE CARLO sensor

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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.

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 your 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 and
disconnecting the battery cables. Don't let anyone start
the vehicle under any circumstances. See your dealer
for service.

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Exterior Lamps
The lamp controls are on the instrument panel. They
control these systems:

Headlamps

Taillamps

Parking Lamps

License Lamps

Sidemarker Lamps

Instrument Panel Lights

Courtesy Lamps
Turn the knob to this symbol (B) to turn on the
parking and other operating lamps without the headlamps.
Turn the knob to this symbol (C) to turn on the
headlamps and other operating lamps.
Turn the knob to OFF to turn off the lamps.
A warning chime will sound when you turn the ignition
switch to OFF, LOCK or ACC with the lamps on.
Daytime Running Lamps / Automatic
Headlamp Control
Daytime Running Lamps (DRL) can make it easier for
others to see the front of your vehicle during the day.
DRL can be helpful in many different driving
conditions, but they can be especially helpful in the
short periods after dawn and before sunset.
A light sensor on top of the instrument panel makes the
DRL work, so be sure it isn't covered.
The DRL system will make your high
-beam headlamps
come on at a reduced brightness when:

the ignition is on,

the headlamp switch is off and

the parking brake is released.

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2-51 Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows AIR BAG or the air bag symbol.
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 ªAir Bagº in the Index.
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.
Charging System Light
The charging system light
will come on briefly when
you turn on the ignition, as
a check to show you it's
working. Then it should
go out.
If it stays on, or comes on while you are driving, you
may have a problem with the charging system. It could
indicate that you have a loose accessory belt or another
electrical problem. Have it checked right away. Driving
while this light is on could drain your battery.
If you must drive a short distance with the light on, be
certain to turn off all your accessories, such as the radio
and air conditioner.

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2-60 Low Oil Level Light
Your engine is equipped
with an oil level monitoring
system. When the ignition
key is turned on, the LOW
OIL light will briefly flash.
If the light does not flash, have it fixed so it will be
ready to warn you if there's a problem.
If the light stays on, stop the vehicle on a level surface
and turn the engine off. Check the oil level using the
engine oil dipstick. (See ªEngine Oilº in the Index.) If
the light does not flash, have the low oil level sensor
system repaired so it will be ready to warn you if there's
a problem.
The oil level monitoring system only checks the oil level
during the brief period between key on and engine
crank. It does not monitor the engine oil level when the
engine is running. Additionally, an oil level check is
only performed if the engine has been turned off for a
considerable period of time, allowing the oil normally in
circulation to drain back into the oil pan.
Change Oil Soon Light
The CHG OIL SOON light
should come on briefly as a
bulb check when you start
the engine. If the light
doesn't come on, have
it serviced.
If the CHG OIL SOON light comes on and stays on
after you start the engine, have the oil changed.
For additional information, see ªEngine Oil, When to
Changeº in the Index. To reset the Oil Life Monitor, see
ªEngine Oil Life Monitorº in the Index.

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Fuse Description
F/INJN Fuel Injectors
PCM IGN Mass Air Flow (MAF) Sensor
Heated Oxygen Sensor #1 and #2
Evaporative Emissions (EVAP)
Canister Purge Solenoid Valve
ELEK IGN Ignition Control (IC) Module
10 I/P Fuse Block
12 Passenger's Side Underhood
Electrical Center, IGN SYST
Relay, R/CMPT REL fuse, PCM
BAT fuse
13 FAN CONT #1 Relay
Relay Description
14 FUEL PUMP
15 A/C CMPR
16 FAN CONT #2
-- Secondary
Cooling Fan (Passenger's Side)
17 FAN CONT #1
-- Primary
Cooling Fan (Driver's Side)
18 IGN SYSTUnderhood Electrical Center
-- Driver's Side
Additional fuses are in a fuse block on the driver's side
of the engine compartment.