sensor CADILLAC ELDORADO 2002 10.G User Guide

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.

3-6
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.

6-17
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.

6-18
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.

6-19
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.

6-61
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

6-65
Fuse Usage
PARK/REV Reverse Relay, Right and Left
Back
-Up Lamps, Electrochromic
Mirror (in Header), Park Relay,
Automatic Transaxle Shift Lock
Control (BTSI) Switch
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, 7Fuse Usage
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

6-66
Rear Compartment Fuse Block
The fuse block is located on the front wall of the trunk
(behind the rear seat) on the driver's side of the vehicle.
Loosen the four trunk trim fasteners and pull the trim
away from the fuse block to gain access.
Fuse Usage
RLY IGN1 Cluster, Cruise in Stalk, Passenger
Zone Module (PZM), Torque
Converter Clutch (TCC) Switch
SIR Sensing and Diagnostic
Module (SDM)
ELC Electronic Level Control (ELC)
Relay, ELC Height Sensor
TURN Electronic Flasher,
Turn/Hazard SwitchFuse Usage
CONSOLE Rear Zone Blower, Right and Left
Heated Seat Switches (Optional)
SPARE Spare Fuse
SPARE Spare Fuse
RSS Road Sensing Suspension (RSS)
Module (ETC Only)
IGN 0
-BODY PRNDL, PZM, Cluster, Air Control
Module (ACM), Upper Zone
Motor, Lower Zone Motor
(Optional), HVAC Solenoids,
Climate Control Panel, Rear Defog
Relay, ELC Relay
COMFORT CD Player, Remote Keyless Entry
(RKE), Controlled Power Relay,
Air Control Module (ACM), PZM
AMP (Optional) Right and Left Bose Relay,
Right and Left Front Speakers
(On Door), Right and Left
Rear Speakers
PZM Passenger Zone Module (PZM)

6-67
Fuse Usage
RADIO/PHONERadio Receiver, Radio Interface
Module (RIM) (Optional),
Phone, RAP Relay, Trunk Release
Relay, Fuel Door Release Relay,
High/Low
-Beam Relay
CLUSTER Steering Wheel Controls, Cluster
ACC PZM, Electrochromic Mirror,
Rain Sensor (Optional),
Accessory Relay
HTD BACKLT Rear Window Defogger
HTD MIR Right and Left Outside
Heated Mirror
HTD SEAT R Passenger Heated Seat
Relay (Optional)
HTD SEAT L Driver Heated Seat
Relay (Optional)
PULL DOWN Trunk Pull
-Down Motor
SPARE Spare Fuse
ANTENNA Power Mast Antenna
RSS Damper Relay (ETC Only)Fuse Usage
CONVENC Trunk Release Relay, Trunk
Release Solenoid, Fuel Door
Release Relay, Fuel Filler Door
Release Solenoid, Door Lock
Relay, Left and Right Door Motors,
PZM, Door Unlock Relay
BATT Driver and Passenger Seat
Lumbar Switch (Optional),
Driver and Passenger Seat Belt
Comfort Solenoid, Memory Seat
Module (Optional)
RSS Road Sensing Suspension (RSS)
Module (ETC Only)
RT PARK Headlamp Switch, Right Front
Parking Lamp, Right Front
and Rear Sidemarker Lamps,
Right Turn/Stop/Tail Lamps
LT PARK Left Front and Rear Sidemarker
Lamps, Left Front Parking Lamp,
Left Turn/Stop/Tail Lamps,
Right and Left License Lamps,
Underhood Lamp