2000 PONTIAC BONNEVILLE sensor

2-41
Ending Cruise Control
There are three ways to turn off the cruise control:

Step lightly on the brake pedal,

move the cruise switch to OFF, or

push the cruise lever toward the driver.
Erasing Speed Memory
When you turn off the cruise control or the ignition,
your cruise control set speed memory is erased.
Exterior Lamps
Headlamps
See ªTurn Signal/Multifunction Leverº in the Index.
Daytime Running Lamps
Daytime Running Lamps (DRL) can make it easier for
others to see the front of your vehicle during the day.
DRL can be helpful in many different driving
conditions, but they can be especially helpful in the
short periods after dawn and before sunset.A light sensor on top of the instrument panel monitors
the exterior light level for the operation of DRL and
Twilight Sentinel
, so be sure it isn't covered. The DRL
system will make your high
-beam headlamps come on
at a reduced brightness when:

The ignition is on,

the headlamp switch is off, and

the transaxle is not in PARK (P).
When the DRL are on, only your high
-beam headlamps
will be on at reduced intensity. The taillamps,
sidemarker and other lamps won't be on. Your
instrument panel won't be lit either.
When it's dark enough outside, your regular intensity
headlamps will come on at full brightness and the DRL
lighting will turn off. The park lamps that normally
come on with your headlamps will also come on.
When it's bright enough outside, the regular intensity
headlamps and park lamps will turn back off, and the
reduced brightness DRL lighting will turn back on.
To idle your vehicle during the day with the DRL off,
shift the transaxle into PARK (P). The DRL will stay
off until you shift out of PARK (P).
At night, you can turn off all exterior lamps when you
are in PARK (P) by turning the Twilight Sentinel knob
all the way to OFF.

2-65
If the driver's belt is already buckled, the light will
come on briefly, but the chime will not sound.
Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows AIR BAG. 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 crash sensing and 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 RUN. If the
light doesn't come on then, have it fixed so it will be
ready to warn you if there is a problem.
On vehicles with the optional DIC, a SERVICE AIR
BAG message will be displayed when there is a problem
with the air bag system. See ªDIC Warnings and
Messagesº in the Index for more information.

3-6
Automatic Operation
When the system is set for AUTO, your climate control
system will control the air delivery mode, fan speed,
A/C and RECIRC operations. Air will come from
the floor, panel or windshield outlets. The fan speed
will vary as the system maintains the selected
temperature setting.
When AUTO is selected, the A/C operation and air inlet
will be automatically controlled. The air conditioning
compressor will run at outside temperatures over
approximately 40
F (4
C). The air inlet will normally
be set to outside air. If it's hot outside, the air inlet will
automatically switch to recirculated inside air to help
quickly cool down your vehicle.
To find your comfort zone, start with 75
F (24
C)
temperature setting and allow about 20 minutes for the
system to regulate. Turn the TEMP knob up or down to
adjust the temperature setting if necessary. If you choose
the temperature setting of 60
F (15
C), the system will
remain at the maximum cooling setting and fan speed.
If you choose the temperature setting of 90
F (33
C),
the system will remain at the maximum heat setting and
fan speed. Choosing either maximum setting will not
cause the system to heat or cool any faster.Be careful not to cover the sensor located on the top of
the instrument panel near the windshield. This sensor
regulates temperature based on sun load.
The EXT (exterior) temperature sensor is located in the
front of the vehicle behind the grille. The displayed
temperature is most accurate after the vehicle has been
moving for a few minutes. If the vehicle is stopped and
then restarted within 2 1/2 hours, the sensor will be hot
from the engine heat. In this case, the temperature first
displayed will continue to be the previous temperature.
The display will update after the vehicle has been
moving for a few minutes and the sensor has a chance
to cool down to the actual temperature.
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 engine coolant
temperature. Pushing the fan button will override this
delay and change the fan to a selected speed.

6-63
Minifuse Usage
9 Headlamp High Beam Right
10 Headlamp High Beam Left
11 Ignition 1
12 Not Used
13 Transaxle
14 Cruise Control
15 DIS
16 Injector Bank #2
17 Not Used
18 Not Used
19 Powertrain Control
Module Ignition
20 Oxygen Sensor
21 Injector Bank #1
22 Auxiliary Power
23 Cigar Lighter
24 Fog Lamps/Daytime
Running Lamps
25 Horn
26 Air Conditioning ClutchMirco Relay Usage
27 Headlamp High Beam
28 Headlamp Low Beam
29 Fog Lamps
30 Daytime Running Lamps
31 Horn
32 Air Conditioning Clutch
33 HVAC Solenoid
Mini Relay Usage
34 Accessory
35 Air Pump
36 Starter 1
37 Cooling Fan Secondary
38 Ignition 1
39 Cooling Fan Series/Parallel
40 Cooling Fan Primary