sensor CADILLAC CATERA 2001 1.G Owners Manual

2-50
Light Sensor
The light sensor for the
Twilight Sentinel is located
in the center of the front
defogger grille.
If you cover the sensor, it will read ªdarkº and the
parking lamps and low
-beam headlamps will come on.
Interior Lamps
Courtesy Lamps
To turn on the courtesy lamps, pull the exterior lamp
knob toward you. To turn the courtesy lamps off,
push the knob back in.
Instrument Panel Brightness Control
This control is located to the right of the fog lamp
button. As you turn the thumbwheel up, the instrument
panel lights will brighten.
Illuminated Entry
This system turns on the courtesy lamps (dome lamps
and door entry lamps) for about 20 seconds when any of
the following occur:

if you manually unlock your vehicle with the key,

if any door is opened,

if you press the unlock button on the remote keyless
entry transmitter, or

if the last door on your vehicle is closed.
Illuminated entry immediately ends when your vehicle's
ignition is turned to ON or START.

2-73 Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows the air bag symbol. The system
checks the air bag's electrical system for malfunctions.
The light tells you if there is an electrical problem. The
system check includes the air bag sensors, the air bag
modules, the wiring and the diagnostic module. For
more information on the air bag system, see ªAir Bagº
in the Index.
This light will come on
when you start your vehicle,
and it will flash for a few
seconds. Then the light
should go out. This means
the system is ready.
If the air bag readiness light stays on after you start the
vehicle or comes on when you are driving, your air bag
system may not work properly. Have your vehicle
serviced right away.
CAUTION:
If the air bag readiness light stays on after you
start your vehicle, it means the air bag system
may not be working properly. The air bags in
your vehicle may not inflate in a crash, or they
could even inflate without a crash. To help avoid
injury to yourself or others, have your vehicle
serviced right away if the air bag readiness light
stays on after you start your vehicle.
The air bag readiness light should flash for a few
seconds when you turn the ignition key to ON. If the
light doesn't come on then, have it fixed so it will be
ready to warn you if there is a problem.

2-78 Low Coolant Warning Light
This warning light should
come on for a few seconds
while you are starting the
engine. If the light doesn't
come on, have it repaired.
Your vehicle is equipped with a low coolant level sensor
(switch and float) that is designed to detect when your
vehicle's coolant level drops below the set limit. If the
low coolant level sensor (under the coolant surge tank)
detects that the level drops while the engine is running,
the low coolant indicator will light and remain lit until
the ignition switch is turned off. Check the coolant level
and add coolant as needed. The light should turn off as
soon as the coolant level is at its proper operating range.
Malfunction Indicator Lamp
(Check Engine Light)
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
control systems.
This system is called OBD II (On
-Board
Diagnostics
-Second Generation) and is intended to
assure that emissions are at acceptable levels for
the life of the vehicle, helping to produce a cleaner
environment. The CHECK ENGINE light comes on to
indicate that there is a problem and service is required.
Malfunctions often will be indicated by the system
before any problem is apparent. This may prevent more
serious damage to your vehicle. This system is also
designed to assist your service technician in correctly
diagnosing any malfunction.

3-3
Outside Temperature Display
The outside temperature is always displayed when your
vehicle's ignition is on. If the outside temperature
display begins to flash, this means that icy road
conditions are possible. Adjust your driving if needed.
The display will flash for about 30 seconds and then
remain on steady.
Mode Button
Press this button to deliver air through the floor, middle
or windshield outlets. The climate control system will
stay in the selected ECC mode until the MODE button is
pressed again or until the TEMP/AUTO knob is pressed.
Press the up or down arrow to see the available modes.
English/Metric Display
You can change the temperature display from English
(degrees Fahrenheit) to metric (degrees Celsius) by
pressing and holding the driver's side TEMP/AUTO
knob for approximately five seconds. Repeat the process
to change back to English from metric.Automatic Operation
Pressing the driver's side TEMP/AUTO knob sets the
system for automatic operation. Once the system is set,
sensors will control the air delivery mode. Air will come
from the floor, middle, side or windshield outlets. The
fan speed will vary as the system maintains the selected
temperature setting. (All previous manually set mode
settings will change back to a fully automatic mode
when the climate control system is turned on this way.)
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 20 minutes for the system to
regulate air temperature. 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.

6-28
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.
Your vehicle has electronic wear sensors that let you
know when the front brake pads are significantly worn
and new pads are needed. The brake pad wear indicator
light will come on and stay on when the brake pads are
worn and need to be replaced. See ªBrake Pad Wear
Indicator Lightº in the Index.
CAUTION:
The brake pad wear indicator light means that
soon your brakes won't work well. That could
lead to an accident. When the brake pad wear
indicator light comes on and stays on, have your
vehicle serviced.

6-59
Fuse Usage
4 RH and LH Rear Seat Cushion
Heater Relay, Rear Sunshade
Motor, Accessory Power Outlet
5 Transmission Control Module
6 Radio Speaker Amplifier
7 RH and LH Rear Side Door
Window Regulator Motor
8 Headlamp Switch, Turn Signal
Switch, Horn Relay, CD Changer,
Multifunction Relay
9 Windshield Wiper Motor and
Relay, Windshield Wiper and
Windshield Washer Switch
10 Body Control Module (BCM),
Heater Water Auxiliary Pump,
Fan Control Relays, Auxiliary
Water Pump Relay
11 Heater and A/C Control, RH and
LH Outside Rearview Mirrors
12 Hazard Warning Switch,
Instrument Cluster, Data Link
Connector (DLC), Stoplamp
Switch, Gage Cluster,
Heater and A/C Control.Fuse Usage
13 Remote Control Outside Rearview
Mirror Switch, A/C Compressor
Relay, Coolant Fan Test
Connector, A/C Load Switch
14 Cellular Telephone, RH and LH
Windshield Washer Nozzles,
Driver and Passenger Heated Seat
Switch, Heater and A/C Control,
Heated Outside Rearview Mirror
and Rear Window Defogger Relay
15 Rear Suspension Leveling Air
Compressor Relay, Instrument
Cluster, Gage Cluster, Cruise
Control Switch, Headlamp Switch,
Multifunction Relay, Passenger
and Driver Heated Seat Relay,
BCM, Sunroof Actuator,
Automatic Level Control Sensor,
RH and LH Heated Rear Seat
Switch, RH and LH Heated Rear
Seat Cushion Relay, Driver Seat
Adjuster Memory Module, LH
Front Side Door Window Switch,
Inside Rearview Mirror

6-60
Fuse Usage
16 Cigarette Lighter
(Front and Console)
17 Horn #1 and #2
18 Fuel Pump
19 Electronic Brake/Traction
Control Module
20 Passenger and Driver Heated
Seat Relay
21 Daytime Running Lamp (DRL)
Relay, LH High
-Beam
Headlamp Relay
22 Headlamp Switch,
LH Low
-Beam Headlamp
23 LH Parking Lamp and Turn Signal
Lamps, LH Rear Sidemarker
Lamp, Multifunction Relay, LH
Stoplamp and Taillamp
24 Lifting Magnet, BCM,
Gage Cluster
25 Sunroof ActuatorFuse Usage
26 Headlamp Switch, RH and LH
Front Sidemarker Lamp, Middle
Taillamp, RH and LH Rear
License Plate Lamp, Radio,
Automatic Transmission Control
Indicator, Heater and A/C Control
27 Automatic Level Control Sensor,
Rear Suspension Leveling Air
Compressor and Relay
28 Door Lock Relay
29 Multifunction Relay,
OnStar

System
30 RH Parking Lamp and Turn Signal
Lamp, RH Rear Sidemarker
Lamp, RH Stoplamp and Taillamp
31 RH Low
-Beam Headlamp Turn
Signal Switch
32 RH High
-Beam Headlamp Relay
33 Blower Controller,
A/C Compressor Relay
34 Heated Rear Window
Defogger Relay
35 Passenger Seat Adjuster
Switch, Driver Seat Adjuster
Memory Module