1998 CADILLAC DEVILLE engine

Downloaded from www.Manualslib.com manuals search engine Comfort Controls
This section tells you how to make your air system work
for you. Your Electronic Climate Control
(ECC) system
uses ozone-friendly
R- 134a refrigerant.
With the
ECC system, you can control the heating,
cooling and ventilation in your vehicle. Your vehicle
also has a flow-through ventilation system described
later in this section.
Digital Cluster Climate Control Panel (DeVille and DeVille d'Elegance
Only)
Fan Button
The button with the fan symbol adjusts the fan speed.
Press the up arrow to increase fan speed and the down
arrow to decrease fan speed.
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Downloaded from www.Manualslib.com manuals search engine Driver’s Side Temperature Button
The red and blue temperature buttons adjust the air
temperature coming through the system. Press the
blue button for a cooler setting or the red button for a
warmer setting.
Passenger’s Side Temperature Knob
With this feature, the right front passenger can control
the temperature of air for hisher own zone. The
passenger can select a four degree warmer or cooler
temperature from the driver’s setting.
To turn the system on, press the knob on the passenger’s
side armrest. Rotate the knob to the right to increase
the temperature and turn to the left to decrease the
temperature. Press the knob again to turn the system
off.
Outside Temperature Display
The outside temperature is always displayed when your
vehicle is running. You can change it from Fahrenheit to
Celsius by pressing the ENG/MET (EnglisWmetric)
button on the Driver Information Center (DIC).
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 Controls
The AUTOECON button automatically controls the
direction
of air delivery for air conditioning and non-air
conditioning 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.

Downloaded from www.Manualslib.com manuals search engine To find your comfort zone, start with the 75 "F (24°C)
setting and allow about 30 minutes for the system to
regulate. Press the red or blue temperature buttons
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. 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.
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 warrns up, the blower fan
speed
will gradually increase and air will flow from the
heater 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 will change
to automatic operation when the ignition is shut off and
then turned back on.

Downloaded from www.Manualslib.com manuals search engine Manual Operation
0 RECIRCULATION: Press this button to limit the
amount of fresh
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.
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 in
the display when the system
is off.
DEFOG: Press this button to divide the air between the
windshield and the heater outlets. This is useful when
fog appears on the windshield or side glass due to
sudden rain or snowy conditions.
AUTOECON: Press this button to switch between
AUTO and
ECON. The ECON setting attempts to keep
air at a selected temperature, however, it does not remove
humidity from the
air. Use this setting in cold or cool weather to save fuel. The AUTO setting is used when
it’s warm outside and you need
to cool the air in order to
maintain
a selected temperature and blower speed.
FAN SPEEDS: Press the button with the fan symbol
on it until AUTO is displayed on the screen. At this
setting, the fan speed is automatically controlled. If
it is
cold outside, the blower may not run in the maximum
high fan 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 blower
fan at a high speed, press the up arrow button until you
see HI on the display. If you want the fan speed to be
automatic, but you like the
fan speed to be higher than
the AUTO setting, press the fan symbol button until
HI
AUTO is shown on the display. If you want the blower
fan at a low speed, press the down arrow button until LO
is shown on the display. If you want the fan speed to run
lower than the AUTO setting, press the button until
AUTO
LO is shown on the display.
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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Downloaded from www.Manualslib.com manuals search engine Analog Cluster Climate Control Panel (DeVille Concours Only)
Fan Button
The button with the fan symbol adjusts the fan speed.
Press the up arrow to increase €an speed and the down
arrow to decrease fan speed.
Driver’s Side Temperature Knob
The TEMP/AUTO knob adjusts the air temperature
coming through the system. Turn the TEMP/AUTO
knob to the right to increase the temperature and to the
left to decrease the temperature. Press the TEMP/AUTO
knob to put the system
in the automatic mode.
Passenger’s Side Temperature Button
With this feature, the right front passenger can control
the temperature of
air for hisher own zone. The
passenger can select a four degree warmer or cooler temperature from the driver’s setting.
To turn the system on, press the PASS/TEMP button
located below the radio. Press the up arrow to increase
the temperature and press the down arrow to decrease
the climate setting. Pressing the
OW button will turn
off the dual-zone function.
Outside Temperature Display
The outside temperature is always displayed when your
vehicle is running. You can change it from Fahrenheit to
Celsius by pressing the
ENGMET (English/metric)
button on the Driver Information Center
(DIC).
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.
3-6

Downloaded from www.Manualslib.com manuals search engine Mode Button
Press this button to deliver air through the floor, middle
or windshield outlets. The system will stay in the
selected mode until the
MODE button is pushed 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 (1 6 " 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.
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.
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 blower fan speed will gradually increase and air will flow from the heater outlets, with some
airflow to the windshield to prevent fogging under
most normal conditions.
3-7

Downloaded from www.Manualslib.com manuals search engine 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 will change
to automatic operation when the ignition is shut
off and
then turned back on.
Manual Operation
You may manually adjust the air delivery mode or
fan speed.
H AC: This setting directs airflow through the middle
instrument panel outlets.
A.
A@
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.
7. HEATEIUDEFROSE This setting directs air to
the floor outlets and toward the windshield.
l# 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.
FAN SPEEDS: Press the button with the fan
symbol on it until AUTO is displayed on the screen.
At this setting, the fan speed
is automatically controlled.
If it is cold outside, the blower may not run in the
maximum high
fan 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 blower fan at
a high speed, press the
up arrow button until you see
HI on the display. If you
want the fan speed to be automatic, but you like the fan
speed to be higher than the AUTO setting, press the fan
symbol button until HI AUTO
is shown on the display.
If you want the blower fan at a low speed, press the
down arrow button until
LO is shown on the display.
If you want the
fan speed to.run lower than the AUTO
setting, press the button until
LO AUTO is shown on
the display.
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Downloaded from www.Manualslib.com manuals search engine 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: 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.
0 RECIRCULATION: Press this button to limit the
amount of fresh 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.
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.
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