check engine TOYOTA SUPRA 1998 Owners Manual

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Close and lock the side doors and hood,
and the system will automatically be reset
after two seconds when the back door is
closed with the key removed.
CANCELLING THE SYSTEM
Unlock either side door with the key. This
cancels the system completely and the
starter circuit cut will be cancelled at
once.
INDICATOR LIGHT
The indicator light gives the following
three indications.
FLASHINGÐThe system is set. You need
the key to open the side doors, back door
and hood.
ONÐThe system will automatically be set
when the time comes. The side doors,
back door and hood may be opened with-
out a key.
OFFÐThe system is inactive. You may
open any of the side doors, back door
and hood.
TESTING THE SYSTEM
1. Open the windows.
2. Set the system as described above. The side doors should be locked with
the key. Be sure to wait until the indi-
cator light starts flashing.
3. Unlock either side door from the inside. The system should activate the alarm.
4. Cancel the system by unlocking either side doors with the key.
5. Repeat this operation for the other side doors, back door and hood. When test-
ing on the hood, also check that the
system is activated when the battery
terminal is disconnected and then re-
connected.
If the system does not work properly,
have it checked by your Toyota dealer. Fuel tank cap
1. To open the fuel filler door, pull the
lever up.
When refueling, turn off the engine.
CAUTION
Do not smoke, cause sparks or al-
low open flames when refueling.
The fumes are flammable.
When opening the cap, do not re-
move the cap quickly. In hot weath-
er, fuel under pressure could cause
injury by spraying out of the filler
neck if the cap is suddenly re-
moved.

SUPRA (U)
62 (i) Take vehicle to
Toyota dealer.
If the indicator or Do this.
buzzer comes on...
(j) Close both side door and back door.
(k) Replace bulb.
(g) Stop and check.
(h) Add engine oil.
(f) Fill up tank.
Low fuel level
warning lightIf the indicator or Do this.
buzzer comes on...
(n) Remove key. Key reminder
buzzer
(l) Take vehicle to
Toyota dealer
immediately.
(m) Take vehicle to Toyota dealer.
(a) Master Warning Light
This light warns that another service re-
minder indicator (except seat belt reminder
light, low fuel level warning light, rear light
failure warning light, SRS airbag warning
light and ºTRAC OFFº indicator/warning
light) is on.
If it comes on while you are driving,
check the other service reminder indicator
that is on with reference to the following
description of the indicator.
(b) Brake System Warning Light
This light has the following functions:
Parking brake reminder
If this light is on, make sure the parking
brake is fully released. The light should
go off.
Low brake fluid level warning
If this light comes on and stays on while
you are driving, slow down and pull off
the road. Then stop the vehicle carefully.
Remember that stopping distance and ped-
al effort may be increased. There may be
a problem somewhere in the brake sys-
tem. Check the fluid level of the see-
through reservoir.

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To make sure the parking brake has not
caused the warning light to come on,
check to see that the parking brake is
fully released.
If the brake fluid level is low...
At a safe place, test your brakes by start-
ing and stopping.
If you judge that the brakes still work
adequately, drive cautiously to your
nearest dealer or shop for repairs.
If the brakes are not working, have the
vehicle towed in for repairs. (For tow-
ing information, see Part 4.)
CAUTION
It is dangerous to continue driving
normally when the brake fluid level is
low.
If the brake fluid level is correct...
Have the warning system checked by your
Toyota dealer. (c) Seat Belt Reminder Light and Buzz-er
Once the ignition key is turned to ºONº or
ºSTARTº, the reminder light flashes and
buzzer comes on if the driver's seat belt
is not fastened. Unless the driver fastens
the belt, the light keeps flashing and the
buzzer stops after about 4 to 8 seconds.
(d) Discharge Warning Light
This light warns that the battery is being
discharged.
If it comes on while you are driving, there
is a problem somewhere in the charging
system.
The engine ignition will continue to oper-
ate, however, until the battery is dis-
charged. Turn off the air conditioning,
blower, radio, etc., and drive directly to
the nearest Toyota dealer or repair shop.NOTICE
Do not continue driving if the engine
drive belt is broken or loose.
(e) Malfunction Indicator Lamp
This lamp comes on in the following
cases.
a. The fuel tank is completely empty. (See
ºFuel gaugeº in Chapter 1- 5 for instruc-
tions.)
b. The fuel tank cap is not tightened se-
curely. (See ºFuel tank capº in Chapter
1- 2 for instructions.)
c. There is a problem somewhere in your
engine or automatic transmission electrical
system.
If it comes on while you are driving in
case c, have your vehicle checked/re-
paired by your Toyota dealer as soon as
possible.
(f) Low Fuel Level Warning Light
This light comes on when the fuel level
in the tank becomes nearly empty. Fill up
the tank as soon as possible.
On inclines or curves, due to the move-
ment of fuel in the tank, the low fuel level
warning light may come on earlier than
usual.

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64
(g) Low Oil Pressure Warning Light
This light warns that the engine oil pres-
sure is too low.
If it flickers or stays on while you are
driving, pull off the road to a safe place
and stop the engine immediately. Call a
Toyota dealer or qualified repair shop for
assistance.
The light may occasionally flicker when
the engine is idling or it may come on
briefly after a hard stop. There is no
cause for concern if it then goes out when
the engine is accelerated slightly.
The light may come on when the oil level
is extremely low. It is not designed to
indicate low oil level, and the oil level
must be checked using the level dipstick.
NOTICE
Do not drive the vehicle with the
warning light on±even for one block.It may ruin the engine.
(h) Low Engine Oil Level Warning Light
The light warns that the engine oil level is
too low. Add oil as soon as possible. (For
instructions, see ºChecking the engine oil
levelº in Chapter 7- 2.) While driving on steep inclines or rough
roads which causes the vehicle to sub-
stantially sway or on curves, this light
may come on due to the movement of
engine oil in the engine.
NOTICE
Continued engine operation with low
engine oil will damage the engine.
(i) ºABSº Warning Light
This light warns that there is a problem
somewhere in your anti- lock brake sys-
tem.
If the light comes on while you are driv-
ing, have your vehicle checked by your
Toyota dealer as soon as possible.
The light will come on when the ignition
key is turned to the ºONº position. After
a few seconds, the light will go off.
When the ºABSº warning light is on (and
the brake system warning light is off), the
brake system operates conventionally but
anti- lock brake system is not assisting
brake performance so that the wheels can
lock- up during sudden braking or braking
on slippery road surfaces. (j) Open Door Warning Light
This light remains on until both side doors
and back door are completely closed.
(k) Rear Light Failure Warning Light
If this light comes on when the headlight
switch is turned on (at the first or second
clickstop), it indicates that one or more of
the tail lights are burned out.
If it comes on when the brake pedal is
depressed, one or more stop lights are
burned out or the stop light circuit is in
need of repair.
Have defective bulbs replaced as soon as
possible.
(l) SRS Airbag Warning Light
This light will come on when the igni-
tion key is turned to the ºACCº or
ºONº position. After about 6 seconds,
the light will go off. This means the
airbag system is operating properly.
The warning light system monitors the air-
bag sensor assembly, inflators, warning
light, interconnecting wiring and power
sources.
If either of the following conditions occurs,
this indicates a malfunction somewhere in
the parts monitored by the warning light
system. Contact your Toyota dealer as
soon as possible to service the vehicle.

SUPRA (U)65

The light does not come on when the
ignition key is turned to the ºACCº or
ºONº position or remains on.
The light comes on while driving.
(m) ºTRAC OFFº Indicator/Warning
Light
This light comes on when the ignition key
is turned to ºONº, and will go off after 3
seconds. This means that the system is
operating properly.
If one of the following conditions occurs,
this indicates a malfunction somewhere in
the parts monitored by the warning light
system. Contact your Toyota dealer as
soon as possible to service the vehicle.
The light remains on more than 3 se-
conds after the ignition switch is turnedon.
The light comes on while driving even
if the ºTRAC OFFº switch is not
pushed.
The light flashes.
(n) Key Reminder Buzzer
This buzzer reminds you to remove the
key when you open the driver 's door with
the ignition key in the ºACCº or ºLOCKº
position. CHECKING SERVICE REMINDER INDICA-
TORS (except the low fuel level warning
light)
1. Apply the parking brake.
2. Open one of the side doors or the back door.
The open door warning light should
come on.
3. Close the side door. The open door warning light should go
off.
4. Turn the ignition key to ºACCº. The SRS airbag warning light should
come on. It goes off after about 6 se-
conds.
5. Turn the ignition key to ºONº, but do not start the engine.
All the service reminder indicators except
the open door warning light and SRS air-
bag warning light should come on. The
ºABSº warning light goes off after about 3
seconds.
If any service reminder indicator or warn-
ing buzzer does not function as described
above, either the bulb is burned out or the
circuit is in need of repair. Have it
checked by your Toyota dealer as soon as
possible.

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74
CAUTION
To help maintain maximum control
of your vehicle, do not use the
cruise control when driving in
heavy or varying traffic, or on slip-
pery (rainy, icy or snow- covered) or
winding roads.
Avoid vehicle speed increases when
driving downhill. If the vehicle
speed is too fast in relation to the
cruise control set speed, cancel the
cruise control then downshift the
transmission to use engine braking
to slow down.
TURNING ON THE SYSTEM
To operate the cruise control, push the
ºCRUISE ON- OFFº switch. This turns the
system on. The indicator light in the
instrument panel shows that you can now
set the vehicle at a desired cruising
speed. Another push will turn the system
completely off.
CAUTION
To avoid accidental cruise control en-
gagement, keep the ºCRUISE ON-
OFFº switch off when not using the
cruise control.
SETTING AT A DESIRED SPEED
On vehicles with automatic transmission,
the transmission must be in ºDº before
you set the cruise control speed.
Bring your vehicle to the desired speed,
push the lever down in the ºSET/COASTº
direction and release it. This sets the ve-
hicle at that speed. If the speed is not
satisfactory, tap the lever up for a faster
speed, or tap it down for a slower speed.
Each tap changes the set speed by 1.6
km/h (1.0 mph). You can now take your
foot off the accelerator pedal.
If you need acceleration±for example,
when passing±depress the accelerator
pedal enough for the vehicle to exceed
the set speed. When you release it, the
vehicle will return to the speed set prior
to the acceleration.
CAUTION
For manual transmission:
While driving with the cruise control
on, do not shift to neutral without
depressing the clutch pedal, as this
may cause engine racing or overrev-
ving.
CANCELLING THE PRESET SPEED
You can cancel the preset speed by:
a. Pulling the control lever in the ºCANCELº
direction and releasing it.
b. Depressing the brake pedal.
c. Depressing the clutch pedal (manual
transmission).
If the vehicle speed falls below about 40
km/h (25 mph), the preset speed will auto- matically cancel out.
If the vehicle speed drops 16 km/h (10
mph) below the preset speed, the preset
speed will also automatically cancel out.
If the preset speed automatically cancels
out other than for the above cases, have
your vehicle checked by your Toyota deal-
er at the earliest opportunity.

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104
Leave the system on during ordinary
driving so that it can operate when
needed. When traction control is ap-
plied, the slip indicator light blinks. If
your vehicle still skids even though
traction control is applied, more power-
ful traction control is applied and the
ºSNOWº indicator light comes on.
You may hear a slight clicking noise in
the engine compartment when the engine
is started. This means that the traction
control system is in the self- check mode,
and does not indicate malfunction. When
the traction control system is operating,
you may feel vibration of your vehicle,
caused by operation of the brakes. This
indicates the system is functioning proper-
ly.
When getting the vehicle out of mud or
new snow, etc. the traction control system
will help operate to prevent the wheels
from spinning.
MANUAL SNOW OPERATION
You can select the snow mode by push-
ing the ºSNOWº switch. The ºSNOWº
indicator light will come on.
To select the automatic mode, push the
ºOFFº switch. The ºSNOWº indicator
light will go off. If your vehicle still
skids, the system automatically oper-
ates.
MANUAL TRACTION CONTROL OFF OP-
ERATION
You can turn off the traction control
system by pushing the ºOFFº switch.
The ºTRAC OFFº indicator/warning light
will come on. Pushing the ºOFFº switch
a second time turns on the traction
control system and the ºTRAC OFFº
indicator/warning light will go off.
If the ºSNOWº indicator light is on,
pushing the ºOFFº switch once selects
the outomatic mode and pushing it a
second time turns off the traction con-
trol system.

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11 0
The Three- way catalytic converter is an
emission control device installed in the
exhaust system.
Its purpose is to reduce pollutants in the
exhaust gas.
CAUTION

Keep people and combustible mate-
rials away from the exhaust pipe
while the engine is running. The
exhaust gas is very hot.
Do not drive, idle or park your ve-
hicle over anything that might burn
easily such as grass, leaves, paper
or rags.
NOTICE
A large amount of unburned gases
flowing into the three- way catalyticconverter may cause it to overheatand create a fire hazard. To prevent
this and other damage, observe thefollowing precautions:
Use only unleaded gasoline.
Do not drive with an extremely low
fuel level; running out of fuel couldcause the engine to misfire, creat-ing an excessive load on the three-
way catalytic converter.
Do not allow the engine to run atidle speed for more than 20 min-
utes.
Avoid racing the engine.
Do not push- start or pull- start yourvehicle.
Do not turn off the ignition while
the vehicle is moving.
Keep your engine in good runningorder. Malfunctions in the engineelectrical system, electronic ignition
system/distributor ignition systemor fuel system could cause an ex-
tremely high three- way catalytic
converter temperature.
If the engine becomes difficult tostart or stalls frequently, take your
vehicle in for a check- up as soonas possible. Remember, your Toyota dealer knows your vehicle and its
three- way catalytic converter sys-tem best.
To ensure that the three- way cata-
lytic converter and the entire emis-sion control system operate proper-ly, your vehicle must receive the
periodic inspections required by theToyota Maintenance Schedule. Forscheduled maintenance information,
refer to the separate ºOwner'sManual Supplement/Maintenance
Scheduleº.

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Engine exhaust cautions
CAUTION

Avoid inhaling the engine exhaust.
It contains carbon monoxide, which
is a colorless and odorless gas. It
can cause unconsciousness or even
death.
Make sure the exhaust system has
no holes or loose connections. The
system should be checked from
time to time. If you hit something,
or notice a change in the sound of
the exhaust, have the system
checked immediately.
Do not run the engine in a garage
or enclosed area except for the
time needed to drive the vehicle in
or out. The exhaust gases cannot
escape, making this a particularly
dangerous situation.
Do not remain for a long time in a
parked vehicle with the engine run-
ning. If it is unavoidable, however,
do so only in an unconfined area
and adjust the heating or cooling
system to force outside air into the
vehicle.
Keep the back door closed while
driving. An open or unsealed back
door may cause exhaust gases to
be drawn into the vehicle. If you
must drive with the back door open
to accommodate a large object,
close the windows, open all the
instrument panel vents and have
the heating or cooling system deliv-
er fresh air into the vehicle by turn-
ing the fan to high speed with the
air intake control button in the
OUTSIDE AIR mode.
To allow proper operation of your
vehicle's ventilation system, keep
the inlet grilles in front of the wind-
shield clear of snow, leaves, or oth-
er obstructions.
If you smell exhaust fumes in the
vehicle, drive with the windows
open and the back door closed.
Have the cause immediately located
and corrected.FUNCTIONS OF ENGINE OIL
Engine oil has the primary functions of
lubricating and cooling the inside of the
engine, and plays a major role in main-
taining the engine in proper working order.
ENGINE OIL CONSUMPTION
It is normal that an engine should con-
sume some engine oil during normal
engine operation. The causes of oil
consumption in a normal engine are as
follows.
Oil is used to lubricate pistons, piston
rings and cylinders. A thin film of oil
is left on the cylinder wall when a pis-
ton moves downwards in the cylinder.
High negative pressure generated when
the vehicle is decelerating sucks some
of this oil into the combustion chamber.
This oil as well as some part of the oil
film left on the cylinder wall is burned
by the high temperature combustion
gases during the combustion process.
Facts about engine oil
consumption

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11 2
Oil is also used to lubricate the stems
of the intake valves. Some of this oil
is sucked into the combustion chamber
together with the intake air and is
burned along with the fuel. High tem-
perature exhaust gases also burn the
oil used to lubricate the exhaust valve
stems.
The amount of engine oil consumed de-
pends on the viscosity of the oil, the
quality of the oil and the conditions the
vehicle is driven under.
More oil is consumed by high- speed driv-
ing and frequent acceleration and decel-
eration.
A new engine consumes more oil, since
its pistons, piston rings and cylinder walls
have not become conditioned.
When judging the amount of oil con-
sumption, note that the oil may become
diluted and make it difficult to judge
the true level accurately.
As an example, if a vehicle is used for
repeated short trips, and consumes a nor-
mal amount of oil, the dipstick may not
show any drop in the oil level at all, even
after 1000 km (600 miles) or more. This
is because the oil is gradually becoming
diluted with fuel or moisture, making it
appear that the oil level has not changed. The diluting ingredients evaporate out
when the vehicle is then driven at high
speeds, as on an expressway, making it
appear that oil is excessively consumed
after driving at high speeds.
IMPORTANCE OF ENGINE OIL LEVEL CHECK
One of the most important points in prop-
er vehicle maintenance is to keep the en-
gine oil at the optimum level so that oil
function will not be impaired. Therefore, it
is essential that the oil level be checked
regularly. Toyota recommends that the oil
level be checked every time you refuel
the vehicle.
NOTICE
Failure to check the oil level regularly
could lead to serious engine troubledue to insufficient oil.
For detailed information on oil level check,
see ºChecking the engine oil levelº in
Chapter 7- 2.
Your engine is fitted with twin ground
electrode platinum- tipped spark plugs.
NOTICE
Use only twin ground electrode plati-
num- tipped spark plugs for your en-gine performance.
Twin ground electrode
platinum- tipped spark plugs
(2JZ- GE engine)