check engine CADILLAC SEVILLE 1996 4.G User Guide

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Engine Speed Limiter
This feature prevents the engine from operating at too
many revolutions per minute (rpm). When the engine
rpm’s are critically high, the fuel supply to the engine
is shut off. When the engine speed slows, the fuel
supply will come on again. This helps prevent damage
to the engine.
Vehicle Speed Limiter (270 hp)
This feature prevents your vehicle from exceeding
speeds that the tires are not rated for. When this
happens, the engine’s fuel supply is shut
off. When the
vehicle speed slows, the fuel supply will come on again.
Warning Lights, Gages and
Indicators
This part describes the warning lights and gages that
may be on your vehicle. The pictures will help you
locate them.
Warning lights
and gages can signal that something is
wrong before it becomes serious enough to cause
an
expensive repair or replacement. Paying attention to
your warning lights and gages could also save you
or
others from injury. Warning
lights come on when there may be or is a
problem with one
of your vehicle’s functions. As you
will see
in the details on the next few pages, some
warning lights come on briefly when you start the
engine just to let you know they’re working. If you
are
familiar with this section, you should not be alarmed
when this happens.
crages can indicate when there may be or is a problem
with one of your vehicle’s functions. Often gages and
warning lights work together to let you know when
there’s a problem with your vehicle.
When one of the warning lights comes on and stays on
when you are driving, or when one of the gages shows
there may be a problem, check the section that tells you
what to do about
it. Please follow this manual’s advice.
Waiting to do repairs can be costly
-- and even
dangerous.
So please get to know your warning lights
and gages. They’re a big help.
Your vehicle may
also have a driver information system
that works along with the warning lights and gages. See
“Driver Information Center” in the Index.
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Downloaded from www.Manualslib.com manuals search engine Safety Belt Reminder Light
When the key is turned to RUN or START, a chime will
come on for about eight seconds to remind people to
fasten their safety belts,
unless the driver’s safety belt is
already buckled.
The safety belt light will
also come on and stay
on for about
20 seconds,
then
it will flash for about
70 seconds. If the driver’s
belt is already buckled,
neither the chime nor the
light will come on.
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 electiical 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 “Air
Bag” in the Index.
, You will see this light flash
for a few seconds when you
turn your ignition to RUN
or START. Then the light
should
go out. This means
,, the system is ready.
If the air bag readiness light doesn’t come on when you
start your vehicle, or stays on, or comes on when you
are driving, your air bag system may not work properly.
Have your vehicle serviced right away.
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Light
This red light tells you that
the engine has overheated.
You should stop the car and
turn the engine off as soon
as possible.
A warning
chime should also sound if
this light comes on.
As a check, the light should come on for a few seconds
when you start your engine. In the section “Problems on
the Road,” this manual explains what to do. See “Engine
Overheating’’ in the Index.
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 to indicate that there is a problem and
service is required. Malfunctions often will be indicated
by the system before any problem is apparent, which
may prevent more serious damage to your vehicle. This
system is also designed
to assist your service technician
in correctly diagnosing any malfunction.
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Downloaded from www.Manualslib.com manuals search engine 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.
If the Light Is Flashing
The following may prevent more serious damage to
your vehicle:
0 Reduce vehicle speed.
0 Avoid hard accelerations.
Avoid steep uphill grades.
If 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. Put your vehicle in PARK (P). 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.
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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 asdesigned.
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 warned
up.)
This will be detected by the system and cause the light
to turn on.
If you experience this condition, 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.

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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.
A CAUTION:
Don’t keep driving if the oil pressure 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.
I NOTICE:
Damage to your engine from neglected oil
problems can be costly and is not covered by
your warranty.

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BATTERY NO CHARGE - 07: This message will
appear if the battery is not being charged. Have the
electrical system checked by your Cadillac dealership
at your earliest convenience.
BATTERY VOLTS HIGH - 08: This message shows
that the electrical charging system is overcharging (more
than 16 volts).
To avoid being stranded, have the
electrical system checked by your Cadillac dealership.
You can reduce the charging overload by using the
accessories. Turn on the lamps and radio, set the climate
control on
AUTO and the fan speed on HI, and turn the
rear window defogger on. You can monitor battery
voltage on the
DIC by pressing the INFORMATION
button. The normal range
is 11.5 to 15.5 volts when the
engine is running.
BATTERY VOLTS LOW - 06: This message will
appear when the electrical system
‘is charging less than
10 volts or if the battery has been drained. If this message
appears immediately after starting,
it is possible that the
generator can still recharge the battery. The battery should
recharge after driving a few
miles and the message should
go out.
Lf this message appears while driving or after
starting your vehicle and stays on, have it checked
immediately to determine the cause
of this problem. To
help the generator recharge the battery quickly you can
reduce the load on the electrical system by turning
off the
accessories.
You can monitor battery voltage on the DIC
by pressing the INFORMA’TION button. The normal range
is 11.5 to
15.5 volts.
BRAKE VACUUM PROBLEM - 108: Thecircuit in
the brake booster vacuum has shorted
or is loose when
this message appears. Your vehicle
may lose power
brakes but you will still have the
use of manual brakes.
The power brakes will not be affected
if the problem is
caused by a failed sensor. Have your vehicle serviced
immediately at your Cadillac dealership.
CHANGE ENGINE OIL - 82: This means that the life
of the engine oil has expired and it should be changed
within
200 miles. See “Engine Oil” and “Filter
Recommendations” in the Maintenance Schedule. After
an oil change, the Oil Life Indicator must be reset. See
“Oil Life Indicator” in the Index
on how to reset it.
CHANGE TRANS FLUID - 47: This message will
appear when it is time
to replace the transaxle fluid
(system has determined that the transaxle fluid has
reached
0%). See the Maintenance Schedule booklet for
the proper fluid and change intervals.
CHECK BRAKE FLUID LEVEL - 37: This message
will display if the ignition is in the
RUN position to
inform the driver that the brake fluid level is low. Check
the brake reservoir level and add
fluid as needed. Have
the brake system serviced by a Cadillac technician as
soon
as possible. If the brake warning light is on, follow
the directions in that part.
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Downloaded from www.Manualslib.com manuals search engine CHECK COOLANT LEVEL - 02: This message will
appear when there is a low level of engine coolant. Have
the cooling system serviced by a Cadillac technician
as
soon as possible.
CHECK FUEL GAGE - 39: This message will appear
when the fuel supply is less than four gallons
(15.2 L)
and the display is turned off (digital clusters only).
CHECK OIL LEVEL - 36: For correct operation of
the low oil sensing system, your vehicle should be on a
level surface.
A false CHECK OIL LEVEL message
may appear if the vehicle
is parked on grades. The oil
level sensing system does not check for actual oil level
if the engine has been off for
a short period of time, and
the oil level is never sensed while the engine is running.
If the CHECK OIL LEVEL message appears, and your
vehicle has been parked on level ground with the engine
off
for at least 30 minutes, the oil level should be
checked by observing the
oil dipstick. Prior to checking
the oil level be sure the engine has been off for five
minutes and your vehicle
is on a level surface. Then
check the dipstick and add oil if necessary. See “Engine
Oil” in the Index.
CHECK WASHER FLUID - 25: This message will
appear
for several seconds indicating that you need
washer solvent.
CRUISE ENGAGED - 43: This message will
appear for
a few seconds when you select a speed at
which to cruise.
DOOR OPEN - 141: The passenger‘s door is open or
ajar when this message appears. The vehicle’s engine
must be running and the transaxle not
in PARK (I?) for
this message to display. A chime will also sound when
the vehicle’s speed is greater than
5 mph (8.1 km/h).
DRIVER DOOR OPEN - 140: This message
will display when the vehicle is being shifted out of
PARK (P) with the engine running to signal that the
driver’s door
is open or ajar. A chime will also sound
when the vehicle’s speed
is greater than 5 mph
(8.1 km/h).
ENGINE COOLANT HOT-IDLE ENGINE - 44:
This message will appear when the engine coolant
temperature is over
248 “F ( 1 24°C). To avoid added
strain on a hot engine, turn
off the climate control
system. Stop and allow your vehicle
to idle until it cools
down
or the message is removed. If it does not cool
down, turn off the engine and
have it serviced before
driving it again. Severe engine damage can result from
an overheated engine. See
“Engine Overheating” in
the Index.
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Downloaded from www.Manualslib.com manuals search engine FUEL LEVEL VERY LOW - 11: This message serves
as a warning that the fuel level in the tank is critically
low. Stop for fuel immediately.
MONITORED SYSTEMS OK - 1: This message only
appears in the “recall” mode by pressing the RESET
button. It
lets you know that no other messages are
stored
or currently active.
PASS KEY NOT PROGRAMMED - 31: This
warning message displays when the PASS-Key pellet
information has not been programmed into your vehicle.
See your Cadillac dealership for service.
PCM FAULT - 110: The circuit in the Powertrain
Control Module (PCM) has shorted
or is loose when this
message appears. Have your Cadillac serviced by your
dealership at once.
REDUCED ENGINE POWER - 41: This message
informs the driver that due
to wheel slippage your
vehicle is reducing engine power
to compensate for the
loss of traction. Accelerating too fast causing the tires to
spin is an example of when this message would display.
REMOVE KEY - 70: This message will appear when
the Personalized Automotive Security System
(PASS-Key
11) is unable to read the pellet on the
ignition key
or an improper key pellet has been inserted.
Wait for the
DIC to display STARTING DISABLED
DUE TO THEFT SYSTEM REMOVE IGNITION
KEY. The instrument panel cluster will then run a timer
and change the messages to WAIT
3 MINUTES, WAIT
2 MINUTES, WAIT 1 MINUTE and then START CAR.
When the REMOVE
KEY message is displayed, remove
the ignition key. Check the ignition
key for damage. If it
is damaged, it may need to be replaced. If you see no
damage, clean the pellet contacts
with a soft cloth or
napkin before inserting
the key back into the ignition.
Have your vehicle serviced
if the message still appears.
SERVICE A/C SYSTEM A/C COMPRESSOR
OFF - 14: This message appears when the electronic
sensors that control the A/C and heating systems are no
longer workmg. Have the climate control system serviced
if you notice a drop in heating and A/C efficiency.
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Supplemental Inflatable Restraint (air bag) system when
this message appears. Let only a qualified technician
work on your vehicle. See your Cadillac dealership for
service
at once.
SERVICE BRAKE FLUID SWITCH - 37: A high
level
of brake fluid causes this message to display if the
ignition is
in the RUN position. Have the brake system
serviced by a Cadillac technician as soon as possible.
If
the brake warning light is on, refer to the directions
listed in that part.
SERVICE CHARGING SYSTEM - 102: This
message will display when a problem with the charging
system has been detected. Have your vehicle serviced at
your Cadillac dealership.
SERVICE ELECTRICAL SYSTEM - 106: This
message will display
if an electrical problem has
occurred within the PCM. Have
your vehicle service by
your Cadillac dealership.
SERVICE EMISSIONS SYSTEM - 104: A problem
in the emissions system has occurred when thts message
appears. Have your Cadillac dealership service your vehicle.
SERVICE ENGINE COOLING SYSTEM - 103: A
problem within the engine cooling system has been
detected when this message displays. See your Cadillac
dealership
for service.
SERVICE FUEL SYSTEM - 101: The PCM
has detected a problem within the fuel system when
this message appears. See your Cadillac dealership
for service.
SERVICE IDLE CONTROL SYSTEM - 107: A
problem with the idle control has occurred when this
message displays. Bring your vehicle
to your Cadillac
dealership for service.
SERVICE IGNITION SYSTEM - 105: This message
displays when a failure in the ignition system has been
detected. Have your vehicle serviced
by your Cadillac
dealership.
SERVICE RIDE CONTROL - 84: This message is
displayed to indicate that the suspension system is not
operating properly.
To correct this problem have your
vehicle serviced at your Cadillac dealership.
SERVICE TRANSMISSION - 100: If a problem is
detected with the transaxle,'this message will appear.
Have
your vehicle checked by your Cadillac dealership.
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