2002 CADILLAC ELDORADO air conditioning

2-83
ENGINE HOT - A/C OFF - 16: This message
displays when the engine coolant becomes hotter than
the normal operating temperature. To avoid added strain
on a hot engine, the air conditioning compressor is
automatically turned off so that air conditioned air is
not delivered. If the coolant temperature returns to
normal, you must select AC to return to a normal A/C
compressor operation. If this message continues to
appear, have the system repaired as soon as possible to
avoid compressor damage.
ENGINE MISFIRE
-- EASE OFF GAS
PEDAL
- 114: An engine misfire has occurred.
You'll need to ease off the gas pedal.
ENGINE OVERHEATED, STOP ENGINE
- 42:
This message will appear when the engine has overheated.
Stop and turn the engine off immediately to avoid severe
engine damage. See ªEngine Overheatingº in the Index.
A multiple chime will also sound when this message
is displayed.
ENGINE POWER REDUCED
- 41: This message
informs you that your vehicle is reducing engine power
because the transaxle is being placed in gear under
conditions that may cause damage to the vehicle
powertrain or vehicle acceleration.FUEL LEVEL LOW
- 11 : This message serves as
a warning that the fuel level in the tank is critically low.
Stop for fuel soon.
HEADLAMPS SUGGESTED
- 23: If it's dark enough
outside and Twilight Sentinel is off, a HEADLAMPS
SUGGESTED message will display on the DIC.
This message informs the driver that turning on the
exterior lamps is recommended even though the
Daytime Running Lamps (DRL) are still illuminated
(it's become dark enough outside to require the
headlamps and/or other exterior lamps).
ICE POSSIBLE
- 13: This message appears when
the outside air temperature is cold enough to create icy
road conditions.
LOW REFRIG A/C OFF
- 12: This message means
that the air conditioning system detects a refrigerant
level that is low enough to cause damage to the air
conditioning compressor. Have the air conditioning
system serviced if this message appears.
MONITORED SYSTEMS OK
- 1: This message only
appears in the ªrecallº mode by pressing the NO INFO
RESET button. It lets you know that no other messages
are stored or are currently active.

2-84
OIL PRESSURE LOW STOP ENGINE - 35: If this
message appears while the engine is running, stop the
engine and do not operate it until the cause of low oil
pressure is corrected. Severe damage to the engine can
result. A multiple chime will also sound when this
message is displayed.
OPTIONS NOT SET
- 99: This message will display
if a fault has occurred in your vehicle's memory.
Have your vehicle serviced by your dealership.
PROGRAM PASS KEY
- 31: This warning message
displays when the PASS
-Key
II pellet information
has not been programmed into your vehicle. See your
dealership for service.
REMOVE KEY
- 70: This message will appear when
the PASS
-Key
II system is unable to read the pellet
on the ignition key or an improper key pellet has been
inserted. This message usually appears following the
display of STARTING DISABLED REMOVE KEY.
The instrument panel cluster will then run a timer and
change the messages to WAIT 3 MINUTES, WAIT
2 MINUTES, WAIT 1 MINUTE and then START CAR.
When the REMOVE KEY message is displayed, remove
the ignition key. Check the ignition key for damage. If it is damaged, it may need to be replaced. If you see
no damage, clean the pellet contacts with a soft cloth or
napkin before inserting the key back into the ignition.
Have your vehicle serviced if the message still appears.
SERVICE A/C SYSTEM
- 14: This message
appears when the electronic sensors that control the air
conditioning and heating systems are no longer working.
Have the climate control system serviced if you notice a
drop in heating and air conditioning efficiency.
SERVICE AIR BAG
- 83: There is a problem with
the Supplemental Inflatable Restraint (air bag) system
when this message appears. Let only a qualified
technician work on your vehicle. See your dealership
for service at once.
SERVICE BRAKE FLUID SWITCH
- 37: A problem
in the brake fluid detection circuit causes this message
to display if the ignition is in RUN. Have the brake
system serviced by a technician as soon as possible.
If the brake warning light is on, refer to the directions
listed in that part.

3-
3-1
Section 3 Comfort Controls and Audio Systems
In this section, you'll find out how to operate the comfort control and audio systems offered with your vehicle.
Be sure to read about the particular systems supplied with your vehicle.
3
-2 Comfort Controls
3
-2 Climate Control Panel
3
-6 Electronic Solar Sensor
3
-7 Air Conditioning
3
-7 Heating
3
-7 Defogging and Defrosting
3
-8 Rear Window Defogger
3
-8 Ventilation System
3
-10 HVAC Steering Wheel Controls
3
-10 Climate Control Personalization (If Equipped)
3
-10 Audio Systems
3
-10 Setting the Clock
3
-11 AM-FM Stereo with Cassette Tape Player
3
-15 CD Adapter Kits
3
-16 AM-FM Stereo with Cassette Tape and
Compact Disc Player with Radio Data
Systems (RDS) and Digital Signal
Processing (DPS) (If Equipped)3
-26 Radio Data Systems (RDS) Program
Type (PTY) Selections
3
-27 Trunk Mounted CD Changer (Option)
3
-31 Radio Personalization with Home and
Away Feature (If Equipped)
3
-31 Theft-Deterrent Feature
3
-32 Audio Steering Wheel Controls
3
-32 Understanding Radio Reception
3
-33 Tips About Your Audio System
3
-34 Care of Your Cassette Tape Player
3
-35 Care of Your Compact Discs
3
-35 Care of Your Compact Disc Player
3
-36 Power Antenna Mast Care

3-4
!~(Fan): Press the switch with the fan symbol on it
until AUTO is displayed on the screen. This setting
automatically controls the fan speed. If it is cold outside,
the fan may not run in the maximum speed right away.
The system checks the temperature of the engine coolant
to assure it is warm enough to provide heat. When the
engine coolant is warm, the controller allows the fan to
gradually increase to a higher speed. This prevents cold
air from blowing into the passenger compartment. If you
want the fan at a higher speed, press the up arrow until
you see HI on the display. If you want the fan speed to
be automatic, but you want the fan speed to be higher
than the AUTO setting, press the fan symbol until
HI AUTO is shown on the display. If you want the
fan at a lower speed, press the down arrow until LO is
shown on the display. If you want the fan speed to run
lower than the AUTO setting, press the switch until
LO AUTO is shown on the display.OFF: Press this button to turn the system off.
Fresh air will continue to flow through the vehicle,
and the system will try to maintain the previously set
temperature. The outside temperature will show on the
display when the system is OFF.
AC (Air Conditioning): Press this button to turn the
air conditioning on and off. The system will cool and
dehumidify the air inside the vehicle. In the AUTO
mode, the display will show that AC is active, but the
air conditioning compressor only operates when the
system determines it is needed.
(Recirculation): Press this button to limit the
amount of outside air entering your vehicle. This is
helpful when you are trying to cool the air quickly or
limit odors entering your vehicle. In the AUTO mode,
the system will use recirculation as necessary to cool
the air. Pressing the recirculation button will change the
operation to a manual mode and the air will recirculate
non
-stop. Press this button again to turn off the
recirculation feature.
If you notice the windows fogging, press the
recirculation button to exit the recirculation mode.

3-5
Automatic Operation
When the system is set for automatic operation,
sensors will control the air delivery mode. Air will
come from the floor, middle or windshield outlets.
The fan speed will vary as the system maintains the
selected temperature setting.
Be careful not to put anything over the solar sensor
located in the middle of the instrument panel near the
windshield. This sensor is used by the automatic system
to regulate temperature.
To find your comfort zone, start with the 75
F (24
C)
setting and allow about 30 minutes for the system to
regulate. Turn the TEMP/AUTO knob to adjust the
temperature if necessary. If you choose 60
F (16
C),
the system will remain at that maximum cooling setting
and will not regulate fan speed. If you choose the
temperature of 90
F (32
C), the system will remain
at that maximum heating setting and will not regulate
fan speed. Choosing either maximum setting will not
cause the system to heat or cool any faster.With the automatic setting, the air conditioning
compressor automatically cycles when needed to cool
the air. In cold weather, when the system senses the
need for heat, the airflow will be directed out of the
floor outlets. As the interior temperature approaches a
desired setting, the fan speed will decrease. To maintain
interior comfort, the airflow may move to the instrument
panel air outlets and floor outlets (bi
-level mode).
On bright sunny days in cold weather, the airflow may
come out of the air conditioning outlets (AC mode) to
maintain comfort and prevent stuffiness.
If your vehicle is sitting out on a hot day and you
have it set on AUTO, the air will first flow out the
floor air outlets for a few seconds. That is normal.
This is to expel hot air from the air outlets. As the
air is cooled, the airflow will move through the air
conditioning outlets. If you start your vehicle with the
fan setting on HI, it will skip the air conditioning purge.

3-7 Air Conditioning
On hot days, open the windows long enough to let hot
inside air escape. This reduces the time it takes for your
vehicle to cool down. Then keep your windows closed
for the air conditioner to work its best.
Press the AC button or the TEMP/AUTO knob to turn
the system on and then select the proper mode to direct
airflow. The system will cool and dehumidify the air
inside the vehicle. Also while in the AUTO mode, the
system will use recirculation as necessary to cool the air.
You may also need to adjust the interior temperature and
the fan speed as needed.
When the air conditioner is on, you may sometimes
notice slight changes in your vehicle's engine speed
and power. This is normal because the system is
designed to cycle the compressor on and off to
maintain the desired temperature.
Heating
Press the MODE switch to select the heater mode.
Adjust the interior temperature to a comfortable level
and if the fan speed needs adjusting, press the up or
down arrow.
Outside air will be brought in and sent through the floor,
air conditioning or bi
-level outlets (depending on the
condition). The heater works best if you keep your
windows closed while using it.
Defogging and Defrosting
Use defrost to remove fog or ice from the windshield
quickly in extremely humid or cold conditions.
Press the MODE switch. If you select defrost mode,
adjust the fan speed by pressing the fan switch up or
down. If you select defrost mode from AUTO, the
system will control the fan speed. The temperature also
needs to be adjusted by turning the TEMP/AUTO knob.
Recirculation is not available in the defrost or defog modes.

3-8 Rear Window Defogger
The lines you see on the rear window warm the glass.
When the rear window defogger is turned on, the rear
window and both outside rearview mirrors are heated to
remove ice and snow from the surface of the glass.
Press this button to
turn on the rear defogger.
The system will automatically shut off after 10 minutes.
If further defogging is desired, press the button again.
Do not attach a temporary vehicle license, tape or decals
across the defogger grid on the rear window.
NOTICE:
Don't use a razor blade or something else sharp
on the inside of the rear window. If you do, you
could cut or damage the warming grid or the
integrated rear window antenna, and the repairs
wouldn't be covered by your warranty.
Ventilation System
Your vehicle's flow-through ventilation system supplies
outside air into the vehicle when it is moving. Outside
air will also enter the vehicle when the heater or the air
conditioning fan is running.
The front outlets are located in the center and at each
side of the instrument panel. You can adjust the
direction of airflow by moving the center control levers
or you can stop the airflow by moving the lever located
on each side of the outlets downward.

6-69
Air Conditioning
Refrigerant Capacity
If you do your own service work, you'll need the proper
service manual. See ªDoing Your Own Service Workº in
the Index for additional information. It is recommended
that service work on your air conditioning system be
performed by a qualified technician.
Air Conditioning
Refrigerant R
-134a 2.0 lbs. (1.0 kg). . . . . . . . . . . . .
Use Refrigerant Oil, R134a Systems
Normal Maintenance
Replacement Parts
Air Filter Element A1096C*. . . . . . . . . . . . . . . . . . . .
Engine Oil Filter PF
-58* . . . . . . . . . . . . . . . . . . . . . .
Spark Plugs PT16EPR
-C13* . . . . . . . . . . . . . . . . . . .
(GM part 12561466)
Gap: 0.050 inches (1.3 mm)
Windshield Wiper Blade
(Pin Type) 22 inches (56.5 cm). . . . . . . . . . . . . . . . .
AC Delco

part number.