1997 CADILLAC DEVILLE Owners Manual

Downloaded from www.Manualslib.com manuals search engine Malfunction Indicator Lamp (Service Engine Soon Light)
SERVICE
ENGINE
SOON
Your Cadillac is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
control systems.
This system
is called OBD I1 (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. (In Canada, OBD
I1 is replaced by
Enhanced Diagnostics.) The SERVICE
ENGINE SOON
light comes on and a chime will sound 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.
I NOTICE:
~
If you keep driving your vehicle with this light
on, after a while, your emission controls may not
work as well, your fuel economy may not be as
good and your engine may not run as smoothly.
This could lead to costly repairs that may not be
covered by your warranty.
This light should come on, as a check to show you it is
working, when the ignition is on and the engine
is not
running. If the light doesn’t come on, have it repaired.
This light will also come on during a malfunction in one
of two ways:
0 Light Flashing -- A misfire condition has been
detected.
A misfire increases vehicle emissions and
may damage the emission control system on your
vehicle. Dealer or qualified service center diagnosis and service is required.
Light On Steady -- An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and
service may be required.
2-80

Downloaded from www.Manualslib.com manuals search engine If the Light Is Flashing
The following may prevent more serious damage to
your vehicle:
0 Reducing vehicle speed.
0 Avoiding hard accelerations.
0 Avoiding steep uphill grades.
If you are towing a trailer, reduce the amount of
cargo being hauled as soon as it is possible.
If the light stops flashing and remains on steady, see “If
the Light Is On Steady” following.
If the light continues to flash, when it is safe to do so,
stop the vehicle. Find a safe place to park your vehicle.
Turn the key off, wait at least
10 seconds and restart the
engine.
If the light remains on steady, see “If the Light
Is On Steady” following.
If the light is still flashing,
follow the previous steps, and drive the vehicle to your
dealer or qualified service center for service.
If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
Did you just drive through
a deep puddle of water?
If so, your electrical system may be wet. The condition
will usually be corrected when the electrical system dries
out.
A few driving trips should turn the
light off.
Are you low on fuel?
As your engine starts to run out of fuel, your engine may
not run as efficiently as designed since small amounts of
air are sucked into the fuel line causing a misfire. The
system can detect this. Adding fuel should correct this
condition. Make sure to install the fuel cap properly. It
will take a few driving trips to turn the light off.
Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel (see
“Fuel” in the Index).
Poor fuel quality will cause your
engine not to
run as efficiently as designed. You may
notice
this as stalling after start-up, stalling when you put
the vehicle into gear, misfiring, hesitation on acceleration
or stumbling on acceleration. (These conditions may go
away once the engine is warmed up.)
This will be detected
by the system and cause the light to
turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at least one
full tank of the proper fuel to turn the light off.
If none of the above steps have made the light turn off,
have your dealer or qualified service center check the
vehicle. Your dealer has the proper test equipment and
diagnostic tools to fix any mechanical or electrical
problems that may have developed.
2-81

Downloaded from www.Manualslib.com manuals search engine Oil Pressure Light
8
This light tells you if there
could be a problem with
your engine oil pressure.
The light goes on when you turn your key to RUN or
START.
It goes off once you start your engine. That’s a
check to be sure the light works. If it doesn’t come on,
be sure
to have it fixed so it will be there to warn you if
something goes wrong. When the light
comes on and stays on, it
means that oil isn’t
flowing through your engine properly.
You could be low on
oil and you might
have some other system problem.
CAI JTTON:
Don’t keep driving if the oil ssure is low. If
you do, your engine can become so hot that it
catches fire. You or others could be burned.
Check your oil
as soon as possible and have your
vehicle serviced.
hOTICE:
Damage to your engine from neglected oil
problems can be costly and is not covered by
your warranty.
2-82

Downloaded from www.Manualslib.com manuals search engine Fuel Gage
PREMIUM UNLEADED FUEL
ONLY
Digital Cluster
I
Analog Cluster
The fuel gage shows approximately how much fuel is
in the tank. It works only when the ignition is in the
RUN position.
On
the digital cluster, if the fuel level is within
approximately two gallons
(7.6 L) of being full, the
letter
F is shown. If the fuel level is between one and
three gallons
(3.8 and 11.4 L) from being empty, the letter
E is shown. If the fuel supply gets down to
approximately three gallons
(1 1.4 L), the E will display
and the FUEL LEVEL LOW message will appear on
the
DIC. (On the analog fuel gage, the FUEL LEVEL LOW
message will also appear.) When the fuel supply gets
down to about
1.2 gallons (4.5 L) from being empty,
the letter
E begins to flash indicating that fuel is
needed soon.
Here are a few concerns some owners have had about
the fuel gage. All of these situations are normal and do
not indicate that anything
is wrong with the fuel gage.
0 At the gas station the gas pump shuts off before the
gage reads
F.
0 It takes more (or less) gas to fill the tank than the
gage said. For example, the gage read
8 GALLONS,
but it took more (or less) than the tank’s remaining
capacity to fill it.
0 The gage may change when you turn, stop or
speed up.

Downloaded from www.Manualslib.com manuals search engine Fuel Data Panel
Digital Cluster
For vehicles equipped with an analog cluster (not shown), fuel data can be obtained by pressing the
INFO button. See “Analog Control Buttons” later in
this section.
The fuel data panel tells you all
you need to know about
the fuel economy and how far you can travel with the
fuel remaining. Press the
AVG button to display the average
mile-per-gallon (AVG MPG). You can also display it in
metric units by pressing the ENG MET button.
When AVG MPG is selected, the total distance is
divided by the total
fuel used.
When the INST button (Instantaneous Fuel Economy) is selected,
you will see what the fuel economy is at that
instant. The computer takes a new reading twice every
second. It will show economy up to
70 miles-per-gallon
(or
2 L per 100 km).
To reset the average fuel economy, press the
INFORMATION button until the AVG
MPG is
displayed on the DIC. Press and hold the RESET button until both the fuel data center and
DIC display reads 0.0.
The RANGE display shows how far the computer thinks
you can travel with the fuel that is in the tank. The
computer does
not know what driving conditions will be
like for the rest of your trip,
so the range is estimated
based
on the recent fuel economy. Therefore, the range
reading may change as your driving habits change.
Going from city to highway driving may increase the
range reading.
If the range display shows LO, you should stop for fuel
as soon as possible. Your computer needs enough data
for the RANGE reading to work.

Downloaded from www.Manualslib.com manuals search engine Driver Information Center (DIC)
The DIC display gives you the status of many of your
vehicle’s systems. The DIC is also used
to display driver
personalization features and warningktatus messages.
Memory and Personalization Features
(If Equipped)
Your vehicle may be equipped with the following
features that can be individually customized for up to
two drivers.
0 Programmable Automatic Door Locks
Remote Confirmation (for RKE)
0 Exterior Lighting (at Unlock)
Remote Recall Memory (for RKE or Key in the
Battery Guard Storage
Ignition)
0 Climate Control Personalization
0 Memory
Seat and Mirrors
Radio Personalization
For detailed information, see each feature
in the Index.
Digital Control Buttons
(DeVille and DeVille d’Elegance Only)
DISPLAY ON/OFF: Pressing this button will turn off
the DIC, Electronic Climate Control (ECC), fuel data
center, the fuel gage, trip odometer and odometer. While
the displays are off, pressing the INFORMATION
button will only turn on the DIC.
If the TRIP SET
button is pressed or the fuel level falls below four
gallons
(15.2 L), all of the displays will come back on.
2-85

Downloaded from www.Manualslib.com manuals search engine
ENGMET: You can change the display from English
(miles) to metric (kilometers) by pressing
this button.
The same button also changes other readings (like
temperature, fuel and odometer).
TRIP SET By using this button, you can tell how far
you’ve gone since you last set the
TRIP SET back to
zero.
To reset, press and hold the button until zeros
appear. If your vehicle is domestic, the trip odometer
will return to zero after
999.9 miles (1 609 km). If
your vehicle is Canadian, the trip odometer will return
to zero after
1 999.9 km (1,242 miles).
INFORMATION: Pressing this button repeatedly will
display the MPG
AVG, MPG INST, GAL FUEL USED,
AVG MPH, ENGINE RPM, BATTERY VOLTS,
COOLANT TEMP and OIL LIFE LEFT.
TIMER: This feature is like a stopwatch, in that
you can clc
c the time it takes to get from one point
to another.
To operate, press the TIMER button until TIMER OFF
0O:OO:OO is displayed on the DIC. Each of the fields for
the hours, minutes and seconds are two numeric digits.
Once
TIMER OFF 0O:OO:OO is displayed, press the
TIMER button to start the timing feature. Press the
TIMER button again to stop it. If you will be starting
and stopping your Cadillac, during
a trip for instance,
the
TIMER feature will automatically start timing where
it left
off when you last stopped. To reset it, press and
hold the
RESET button until the display reads TIMER
0O:OO:OO. Press the INFORMATION button to exit from
the
TIMER function.
RESET: Pressing this button will reset the MPG AVG,
MPG INST, GAL
FUEL USED, AVG MPH and OIL
LIFE LEFT. Pressing RESET when a non-resettable
display appears will cause a “recall” mode to occur.
When this happens, all
DIC warning messages that have
been displayed since the ignition key was turned to
RUN will redisplay. If no messages were displayed, a
MONITORED
SYSTEMS OK message will appear.
2-86

Downloaded from www.Manualslib.com manuals search engine MPG AVG (Reset): Press the INFORMATION button
to display the MPG AVG (Average Fuel Economy), then
press and hold the
RESET button until 0.0 MPG AVG
is displayed.
GAL FUEL USED (Reset): Press the INFORMATION
button to display the GAL
FUEL USED on the DIC,
then press and hold the RESET button until 0.0 GAL
FUEL USED is displayed.
AVG MPH (Reset): Press the INFOFWMTION button
to display the AVG MPH (Average Speed), then press
and hold
the RESET button until 0.0 AVG MPH
is displayed.
OIL LIFE LEFT (Reset): Press the INFORMATION
button to display the OIL LIFE LEFT, then press and
hold the RESET button until
100% OIL LIFE LEFT is
displayed. (This only needs to be reset after you have
had the oil changed.)
Analog Control Buttons
(DeVille Concours Only)
INFO RESET Pressing this button will reset the MPG
AVG, GAL FUEL
USED, AVG MPH and OIL LIFE
LEFT. Pressing INFO RESET when a non-resettable
display appears will cause a “recall” mode to occur.
When this happens, all DIC warning messages that have
been displayed since the ignition key was turned to RUN will redisplay.
If no messages were displayed, a
MONITORED SYSTEMS OK message will appear.