1999 CADILLAC SEVILLE sensor

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2-83
PASSENGER DOOR AJAR - 141: The passenger's
door is open or ajar when this message appears. The
ignition must be in ON for this message to display. A
chime will also sound when the vehicle's speed is
greater than 3 mph (4.8 km/h).
RIGHT REAR DOOR AJAR
- 143: The right rear
door is open or ajar when this message appears. The
ignition must be in ON for this message to display. A
chime will also sound when the vehicle's speed is
greater than 3 mph (4.8 km/h).
SERVICE AC 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 CHARGING SYS
- 102: This message will
display when a problem with the charging system has
been detected. Have your vehicle serviced at
your dealership.SERVICE ELECTRICAL SYS
- 106: This message
will display if an electrical problem has occurred within
the Powertrain Control Module (PCM) or the ignition
switch. Have your vehicle serviced by your dealership.
SERVICE FUEL SYSTEM
- 101: The Powertrain
Control Module (PCM) has detected a problem within
the fuel system when this message appears. See your
dealership for service.
SERVICE IDLE CONTROL
- 107: A problem with
the idle control has occurred when this message displays.
Take your vehicle to your dealership for service.
SERVICE STABILITY SYS
- 54 : If you ever see the
SERVICE STABILITY SYS message, it means there
may be a problem with your stability enhancement
system. If you see this message, try to reset the system
(stop; turn off the engine; then start the engine again). If
the SERVICE STABILITY SYS message still comes on,
it means there is a problem. You should see your dealer
for service. Reduce your speed and drive accordingly.

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2-91 Comfort Controls and Radio System
Personalization
These features allow both drivers to personalize their
own climate control settings as well as their radio
settings. For more information, see ªClimate Control
Personalizationº and ªRadio Personalizationº in
the Index.
The outside temperature is always available for display
if it has been selected for a DIC display when your
vehicle is running unless an overriding DIC message
appears. You can change the temperature from
Fahrenheit to Celsius by pressing the ENG/MET
(English/metric) button on the instrument panel. For
more information on the DIC, see ªDIC Messagesº in
the Index.
The electronic sensor can be affected by road or engine
heat during idling, slow driving or when the engine is
first stared after a short trip. 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.
Continuous Variable Road Sensing
Suspension (CVRSS)
The CVRSS automatically adjusts the ride of your
vehicle. Automatic ride control is achieved through a
computer used to control and monitor the suspension
system. The controller receives input from various
sensors to determine the proper system response. If the
controller detects a problem within the system, the DIC
will display a SERVICE SUSPENSION SYS message.
If this message appears, have your vehicle serviced at
your dealership.

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3-3
Passenger's Side Temperature Knob
The right front passenger can control the temperature
of air for both the front passenger and rear seat area.
(The passenger's and driver's knob adjust from 60
F
(16
C) to 90
F (32
C) independent of each other. It is
suggested, however, that the passenger's setting stay no
more than four degrees warmer or cooler in temperature
from the driver's setting.) To turn the system on, press
the passenger's side TEMP knob. Turn the passenger's
side TEMP knob clockwise to increase the temperature
and counterclockwise to decrease the temperature. Press
the passenger's side TEMP knob again to turn off the
passenger's side system. If the passenger's side is turned
off, the driver's side will control the temperature of the
entire vehicle.
Automatic Operation
When the system is set for automatic operation, sensors
will control the air delivery mode. Air will come from
the floor, the instrument panel or windshield outlets.
The fan speed will vary as the system maintains the
selected temperature setting.
Be careful not to put anything over the electronic solar
sensors located near the ends of the instrument panel
near the windshield. These sensors are 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 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 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 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 (A/C mode) to maintain
comfort and prevent stuffiness.

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3-6 Electronic Solar Sensor
The sensor monitors the sun's solar radiation and is
located near the end of the instrument panel near
the windshield.
The climate control panel uses this information to
automatically make the necessary temperature and
airflow adjustments to maintain your comfort. The
climate control system may supply cooler air to one side
of your vehicle, if that side is facing the sun. Be careful
not to put anything over the sensor on top of the
instrument panel.
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. Your A/C setting
may be adjusted automatically or manually. It may also
be set separately on the passenger's side from the
driver's side. See ªClimate Control Panelº earlier in
this section.
Heating
Adjust the interior temperature to a comfortable level
and if the fan speed needs adjusting, press the up or
down arrow. Adjusting the fan speed will cancel the cold
air delay.
Outside air will be brought in and sent through the floor,
air conditioning or bi
-level outlets. The heater works
best if you keep your windows closed while using it.
In automatic operation, your fan will not run at high
speed to minimize warm
-up time.

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6-16
Engine Air Cleaner/Filter
The air cleaner is located next to the coolant surge tank
on the driver's side of the engine. Be sure the engine has
cooled before following these steps to replace the air
cleaner filter:
1. Disconnect the Intake
Air Temperature (IAT)
sensor from the clean
air duct.
2. With a screwdriver,
loosen the air duct
clamp, which is located
at the mass airflow
sensor end of the
air duct.
3. Disconnect the air duct from the mass airflow sensor.

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6-18
Follow these steps to reinstall the air cleaner assembly:
1. Slide the air cleaner lid into the slots in the bottom of
the air cleaner base.
2. Close the cover and 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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6-30
NOTICE:

Using the wrong fluid can badly damage
brake system parts. For example, just a few
drops of mineral
-based oil, such as engine
oil, in your brake system can damage brake
system parts so badly that they'll have to be
replaced. Don't let someone put in the
wrong kind of fluid.

If you spill brake fluid on your vehicle's
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake fluid
on your vehicle. If you do, wash it off
immediately. See ªAppearance Careº in
the Index.
Brake Wear
Your vehicle has four-wheel disc brakes.
Disc brake pads have built
-in wear indicators that make a
high
-pitched warning sound when the brake pads are worn
and new pads are needed. The sound may come and go or
be heard all the time your vehicle is moving (except when
you are pushing on the brake pedal firmly).
CAUTION:
The brake wear warning sound means that soon
your brakes won't work well. That could lead to
an accident. When you hear the brake wear
warning sound, have your vehicle serviced.
Your vehicle also has electronic wear sensors that let
you know when the brake pads are significantly worn
and new pads are needed. The CHANGE BRAKE
PADS message will be displayed on the Driver
Information Center when the brake pads are worn and
need to be replaced. (See ªChange Brake Pads Messageº
in the Index.)

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6-61
Minifuses
Fuse Usage
1 Not Used
2 Accessory
3 Windshield Wipers
4 Not Used
5 Headlamp Low Beam Left
6 Headlamp Low Beam RightFuse Usage
7 Instrument Panel
8 Powertrain Control Module Battery
9 Headlamp High Beam Right
10 Headlamp High Beam Left
11 Ignition 1
12 Not Used
13 Not Used
14 Cruise Control
15 Oxygen Sensor A
16 Injector Bank #2
17 Not Used
18 Powertrain Control Module Ignition
19 Direct Ignition System
20 Oxygen Sensor B
21 Injector Bank #1
22 Auxiliary Power
23 Cigar Lighter
24 Fog Lamps/Daytime Running Lamps
25 Horn
26 Air Conditioner Clutch