2003 Oldsmobile Alero air conditioning

Climate Controls
Climate Control System
With this system you can control the heating, cooling
and ventilation for your vehicle.
Operation
Io change the current mode, select one of the following:
2 (Vent): This mode directs air to the instrument
panel outlets.
+2 (Bi-Level): This mode directs half of the air to the
instrument panel outlets, and then directs most of
the remaining air to the floor outlets. Some air may be
directed toward the side windows.
(Floor): This mode directs most of the air to the
floor outlets with some air directed to the side windows.
The right knob can also be used to select defog or
defrost modes. Information on defogging and defrosting
can be found later in this section.
@? (Fan): Turn the left knob clockwise or
counterclockwise to increase or decrease the fan speed.
a (Outside Air): Press this button to turn the
outside air mode on or
off. When this mode is on,
outside air will circulate throughout your vehicle. The
outside air mode can be used with all modes, but
it cannot be used with the recirculation mode.
(Recirculation): This mode keeps outside air from
coming in the vehicle. It can be used
to prevent outside
cool the air inside your vehicle more quickly. Press this
button to turn the recirculation mode on or
off. The
air-conditioning compressor will come on. The
recirculation mode cannot be used with the outside air
mode. Recirculation is not available when
in the defog or
defrost modes or when the fan
is off.
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When you switch to the defog or defrost modes the
system will automatically move from recirculation to
outside air. When you move the mode knob back to
another mode, the system will move back into
recirculation. When the car is turned off and back on the
system will default to outside air automatically.
Temperature Control: Turn the center knob clockwise
or counterclockwise to manually increase or decrease
the temperature inside your vehicle.
When it’s cold outside
0°F (-18°C) or lower, use the
engine coolant heater,
if equipped, to provide warmer air
faster to your vehicle. An engine coolant heater warms
the coolant that the engine uses to provide heat to
warm the inside of your vehicle. For more information,
see
Engine Coolant Heater on page 2-20.
A/C (Air Conditioning): Press this button to turn the
air-conditioning system on or off. When
A/C is pressed,
an indicator light in the button will come on to let you
know that air conditioning is activated.
The fan knob must be set to a speed for the air
conditioning to operate.
On hot days, open the windows to let hot inside air
escape; then close them. This helps to reduce the time
it takes for your vehicle to cool down. It also helps
the system to operate more efficiently. For
quick cool down
on hot days:
1. Select the vent mode.
2. Select the highest fan speed.
3. Select A/C.
4. Select the recirculation mode.
5. Select the coolest temperature.
Using these settings together for long periods of time
may cause the air inside of your vehicle to become too
dry. To prevent this from happening, after the air in
your vehicle is cooled, turn the recirculation mode off.
The air-conditioning system removes moisture from
the air,
so you may sometimes notice a small amount of
water dripping underneath your vehicle while idling or
after turning off the engine. This is normal.
Defogging and Defrosting
There are two modes to choose from to clear fog or
frost from your windshield. Use the defog mode to clear
the windows of fog or moisture and warm the
passengers. Use the defrost mode to remove fog or
frost from the windshield more quickly.
Turn the right knob to select the defog or defrost mode.
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+3 (Defog): This mode directs half of the air to the
windshield and most of the remaining air to the
floor outlets with a small amount directed at the side
windows. When you select this mode, the system turns
off recirculation and runs the air-conditioning
compressor unless the outside temperature is at or
below freezing. The recirculation mode cannot be
selected while in the defog mode.
To help clear the side windows quickly while using air
conditioning, do the following:
1. Select the bi-level mode.
2. Select the highest fan speed.
3. Select NC.
4. Select the temperature.
9 (Defrost): This mode directs most of the air to
the windshield with some air directed to the floor
outlets. In this mode, the system will automatically
turn
off recirculation and run the air-conditioning
compressor, unless the outside temperature is at
or
in the defrost mode.
To help clear the windshield quickly, do the following:
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1. Select the defrost mode.
2. Select the outside air mode.
3. Select the highest temperature.
4. Select the highest fan speed. Your
vehicle is equipped with side window defogger
outlets located above the side instrument panel outlets.
To help clear the side windows quickly, do the following:
1. Select the floor mode.
2. Select the outside air mode.
3. Select the highest temperature.
4. Select the highest fan speed.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog from the rear window.
Lut] REAR: Press this button to turn the rear window
defogger on or
off. An indicator light in the button
will come on to let you know that the rear window
defogger is activated. Be sure to clear as much snow
from the rear window as possible.
The rear window defogger will turn
off approximately
10 minutes after the button is pressed. If turned on
again, the defogger will only run for approximately
five minutes before turning
off. The defogger can also
be turned
off by pressing the button again or by turning
off the engine.
Notice: Don’t use anything sharp on the inside of
the rear window. If you do, you could cut or damage
the warming grid, and the repairs wouldn’t
be
vehicle license, tape, a decal or anything similar
to the defogger grid.
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Relays 16
17
18
19
20 21
22
Fuses
23-32 33
34
35
36
37
36
39
40 Usage
Air Conditioning Compressor
Not Used
Fuel Pump
Automatic Headlamp System
Automatic Headlamp System
Horn
Daytime Running Lamps (DRL)
Usage
Spare Fuse Holder
Rear Defog
ACC~SSGP~ Power Outlets, Cigarette
Lighter
Generator Not Used
Air Conditioning Compressor, Body
Function Control Module
Powertrain Control Module (PCM)
Anti-Lock Brakes (ABS)
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Fuses 41
42
43
44
45
46 47
48 49
50
51
52
53
54
55
56
57 Usage
Ignition System
Back-up Lamps, Brake Transaxle
Shift Interlock
Horn
PCM
Parking Lamps
Climate Control System, Air
Conditioning
Canister Vent Valve, Exhaust
Oxygen Sensors
Fuel Pump, Injectors
Not Used
Right Headlamp
Left Headlamp
Cooling Fan
#2
HVAC Blower (Climate Control)
Crank Cooling Fan
#2 Ground
Fuse Puller for Mini Fuses
Not Used
5-85

Fuel System Inspection
Inspect the complete fuel system for damage or leaks.
Engine Cooling System Inspection
Inspect the hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
fittings and clamps; replace as needed. Clean the
outside of the radiator and air conditioning condenser.
To help ensure proper operation, a pressure test of
the cooling system and pressure cap is recommended
at least once a year.
Throttle System Inspection
Inspect the throttle system for interference or binding,
and for damaged or missing parts. Replace parts
as needed. Replace any components that have high
effort or excessive wear.
Do not lubricate accelerator
and cruise control cables.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook-up, binding, leaks, cracks,
chafing, etc. Inspect disc brake pads for wear and rotors
for surface condition. Inspect other brake parts,
including calipers, parking brake, etc. You may need to
have your brakes inspected more often
if your driving
habits or conditions result in frequent braking.
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