2002 CADILLAC ELDORADO sensor

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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

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The outside temperature sensor is located near the front
grille. The sensor can be affected by road or engine
heat during idling, slow driving or when the engine is
first started after a short trip. In order to ensure proper
automatic climate control operation, the outside air
temperature display may not update as quickly as
expected. This is to allow the air surrounding the outside
temperature sensor to be as close to the actual outside
conditions as possible. This is determined by how much
time has elapsed since the vehicle has been turned off
and by vehicle speed.
Mode Switch
Press the MODE switch to deliver air through the floor,
middle or windshield outlets. The system will stay in
the selected mode until the MODE switch is pressed
again. Press the up or down arrow to cycle through
the available modes.Manual Operation
You may manually adjust the air delivery mode or
fan speed.
(Bi-Level): This setting directs air into your
vehicle in two ways. Cool air is directed to the upper
portion of your body through the four instrument
panel outlets while warmed air is directed to the floor.
Heater/Defrost): This setting directs air to the
floor outlets and toward the windshield.
(Heater): This setting directs warmed air through
the floor outlets. Some warm air is diverted to the
windshield to minimize fogging.
(Defrost): Press this button to quickly remove
fog or frost from the windshield. This setting sends
most of the airflow to the windshield with only a
small amount to the floor outlets.

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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.

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To avoid blowing cold air in cold weather, the system
will delay turning on the fan until warm air is available.
The length of delay depends on the outside air
temperature, engine coolant temperature or the
time since the engine was last started. As the coolant
warms up, the fan speed will gradually increase and
air will flow from the floor outlets, with some airflow
to the windshield to prevent fogging under most
normal conditions.
If you leave your vehicle, the system will remember
the control setting the next time you start your engine,
except for recirculation and defrost. Each ignition cycle
cancels recirculation, whereas, defrost mode will change
to automatic operation when the ignition is shut off and
then turned back on.Electronic Solar Sensor
The sensor monitors the sun's solar radiation and
is located on top of the instrument panel near the
windshield. The electronic climate control panel uses
this information to automatically make the necessary
temperature and airflow adjustments to maintain
your comfort.

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Engine Air Cleaner/Filter
The engine air cleaner/filter is located next to the
windshield washer fluid reservoir in the engine
compartment on the driver's side of the vehicle.
For more information on location, see ªEngine
Compartment Overviewº in the Index.Be sure the engine has cooled before following these
steps to replace the engine air cleaner/filter:
1. Loosen the air duct
clamp, which is
located at the mass
airflow sensor end of
the air duct.
2. Disconnect the air duct from the mass airflow sensor.

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3. Unhook both engine air cleaner/filter cover
latches. One latch is located near the radiator
hose (not shown) and the other latch is located
next to the mass airflow sensor.
4. Pivot the air cleaner and air duct assembly toward
the front of the vehicle. Remove the cover.5. Take out the engine air cleaner/filter and remove any
loose debris that may be found in the base.
6. Install a new engine air cleaner/filter element.
See ªNormal Maintenance Replacement Partsº
in the Index.

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Follow these steps to reinstall the engine air
cleaner/filter assembly:
1. Slide the lid into the slots in the front edge of
the base.
2. Pivot the cover and the air duct assembly
downward. Make sure that both latches are
secure and fully engaged.
3. Reinstall the clean air duct over the mass airflow
sensor. Make sure that the duct is secure around
the entire outer edge of the sensor.
4. Tighten the air duct clamp.
5. Reconnect the mass airflow sensor.
Refer to the Maintenance Schedule to determine when to
replace the air filter.
See ªScheduled Maintenance Servicesº in the Index.
CAUTION:
Operating the engine with the air cleaner/filter
off can cause you or others to be burned. The air
cleaner not only cleans the air, it stops flame if
the engine backfires. If it isn't there, and the
engine backfires, you could be burned. Don't
drive with it off, and be careful working on the
engine with the air cleaner/filter off.
NOTICE:
If the air cleaner/filter is off, a backfire can
cause a damaging engine fire. And, dirt can
easily get into your engine, which will damage it.
Always have the air cleaner/filter in place when
you're driving.

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MaxiFuse
(8
-Way) Usage
INADVERT Inadvertent Power Relay, Interior
Lamps Fuse, Cigarette Lighter
-1
Fuse, Courtesy Lamp Relay
LAMPS Headlamps Fuse/Relay, High/Low
Beam Control Relay, Fog Lamp
Fuse, DRL Fuse, Hazard Fuse,
Mirror Fuse, Inadvertent Power
Relay, Right and Left High
-Beam
Fuse, Right and Left Low
-Beam
Fuse, Stoplamp Fuse, Fog Lamp
Relay, DRL Relay
IGN 1 Rear Ignition
-1 Relay, Wiper Fuse,
Relay Ignition
-1 Fuse, Supplemental
Inflatable Restraint (SIR) Fuse,
Accessory Relay
WINDOWS Retained Accessory Power
(RAP) Relay
SEATS Horn Relay, Driver and Passenger
Lumbar In/Out Relays, Driver and
Passenger Lumbar Up/Down RelaysMaxiFuse
(8
-Way) Usage
SPARE Spare Fuse
AIR AIR Pump
BATT 3 Steering Column Ignition Switch
BATT 2 Steering Column Ignition Switch
IGN 1 Front Ignition
-1 Relay, Oxygen
Sensor 1 and 2 Fuse, Fuel Fuse,
Cruise Fuse, Fuel Pump Relay
BATT 1 Starter Relay and Solenoid,
Park/Reverse Fuse, Park Relay,
Powertrain Control Module
(PCM) Fuse, AC Compressor
Fuse and Relay, Fan Relays,
Reverse Relay
BRAKES Anti
-Lock Brake System (ABS)
Brake Modulator
COOL FANS Cooling Fan Relays 1 and 3