2001 CADILLAC ELDORADO sensor

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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
-6 Air Conditioning
3
-7 Heating
3
-7 Defrosting
3
-7 Rear Window Defogger
3
-8 Ventilation System
3
-9 HVAC Steering Wheel Controls
3
-10 Climate Control Personalization (If Equipped)
3
-10 Audio Systems
3
-10 Setting the Clock
3
-10 AM-FM Stereo with Cassette Tape Player
3
-14 AM-FM Stereo with Cassette Tape and
Compact Disc Player with Radio Data
Systems (RDS) and Digital Signal
Processing (DPS) (If Equipped)3
-24 Radio Data Systems (RDS) Program
Type (PTY) Selections
3
-25 CD Adapter Kits
3
-25 Trunk Mounted CD Changer (Option)
3
-29 Radio Personalization with Home and Away
Feature (If Equipped)
3
-30 Theft-Deterrent Feature
3
-31 Audio Steering Wheel Controls
3
-31 Understanding Radio Reception
3
-32 Tips About Your Audio System
3
-33 Care of Your Cassette Tape Player
3
-34 Care of Your Compact Discs
3
-34 Care of Your Compact Disc Player
3
-35 Power Antenna Mast Care

3-3
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 Button
Press the MODE button to deliver air through the floor,
middle or windshield outlets. The system will stay in the
selected mode until the MODE button is pressed again.
Press the up or down arrow to cycle through the
available modes.
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 the floor
outlets. As the interior temperature approaches a desired
setting, the blower 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.

3-6 Electronic Solar Sensor
The sensor monitors the sun's solar radiation and is
located on top of the instrument panel near the
windshield. The ECC panel uses this information to
automatically make the necessary temperature and
airflow adjustments to maintain your comfort.
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 keep the
desired temperature.

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Engine Air Cleaner/Filter
The engine air cleaner/filter is located next to the
windshield washer fluid reservoir on the driver's side of
the engine. 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. With a screwdriver,
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 IAT 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 IAT sensor.
Refer to the Maintenance Schedule to determine when to
replace the air filter.
See ªScheduled Maintenance Servicesº in the
Maintenance Schedule booklet.
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
(6
-Way) Usage
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 FNS Cooling Fan Relays 1 and 3Power
Distribution
BlockUsage
DRL Daytime Running Lamps (DRL)
HI/LO BEAM High and Low
-Beam Headlamps
HORN Horn
FOG LPS Fog Lamps
ACCESSORY Accessories
HEAD LPS Headlamps
Relays
INADVERT POWER RELAY
IGN 1 RELAY
STARTER RELAY

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Fuse Usage
DRL Daytime Running Lamp (DRL)
Relay, Left and Right Low Beam
in DRL Mode
IGN 0 (ENG) Powertrain Control
Module (PCM)
CRANK Powertrain Control
Module (PCM)
ABS Anti
-Lock Brake System
(ABS)/Traction Control System
IGN
-1 Rear Ignition-1 Relay, Front Fog
Lamp Relay, Controlled Power
Backup Relay, DRL Relay,
Canister Vent Solenoid
WIPERS Accessory Relay, Wiper Switch
A/C COMP AC Compressor Relay,
Cooling Fan Relays 1, 2, 3,
Compressor Clutch
PCM (BAT) PCM
PARK/REV Reverse Relay, Right and Left
Back
-Up Lamps, Electrochromic
Mirror (in Header), Park Relay,
Brake Transaxle
-Shift
Interlock (BTSI) SwitchFuse Usage
ECS Transaxle Shift Solenoids, Air
Meter, Canister Purge, PCM, Front
Ignition
-1 Relay
PCM (IGN) Powertrain Control
Module (PCM)
DIS Odd and Even Coil Packs
CRUISE Stepper Motor Cruise Control,
Low Refrigerant Pressure Cutoff
Switch, Park Relay
INJ Injectors 1, 4, 6, 7
INJ Injectors 2, 3, 5, 8
FUEL PUMP Fuel Pump Relay, Fuel Pump
OXY SEN1 Oxygen Sensor Front
OXY SEN2 Catalytic Converter (CAT)
Rear Oxygen Sensor,
Starter Enable Relay
Relays
A/C COMP
RELAY
FUEL PUMP
RELAY