warning light TOYOTA SUPRA 1998 User Guide

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Brake system
TANDEM MASTER CYLINDER BRAKE SYSTEM
The tandem master cylinder brake system
is a hydraulic system with two separate
sub- systems. If either sub- system s
hould
fail, the other will still work. However, the
pedal will be harder to press, and your
stopping distance will be longer. Also, the
brake system warning light may come on.
CAUTION
Do not drive your vehicle with only a
single brake system. Have your
brakes fixed immediately.
BRAKE BOOSTER
The brake booster uses engine vacuum to
power- assist the brakes. If the engine
should quit while you are driving, you can
bring the vehicle to a stop with normal
pedal pressure. There is enough reserve
vacuum for one or two stops±but no more!
CAUTION
Do not pump the brake pedal if the
engine stalls. Each push on the
pedal uses up your vacuum reserve.
Even if the power assist is com-
pletely lost, the brakes will still
work. But you will have to push the
pedal hard±much harder than nor-
mal. And your braking distance will
be longer.
ANTI- LOCK BRAKE SYSTEM
The anti- lock brake system is designed to
automatically help prevent lock- up of the
wheels during sudden braking or braking
on slippery road surfaces. This assists in
providing directional stab ility and steering
performance of the vehicle under these
circumstances.
The anti- lock brake system becomes op-
erative after the vehicle has accelerated
to a speed in excess of approximately 10
km/h (6 mph). It stops operating when the
vehicle decelerates to a speed below
approximately 5 km/h (3 mph). You may hear a sound in the engine
compartment for a few seconds when the
engine is started or just after the vehicle
is started. This means that the anti- lock
brake system is in the self check mode,
and does not indicate a malfunction.
Effective way to press the ºABSº brake
pedal:
When the anti- lock brake system func-
tion is in action, you may feel the brake
pedal pulsating and hear a noise. In this
situation, to let the anti- lock brake sys-
tem work for you, just hold the brake
pedal down more firmly. Do not pump
the brake. This will result in reduced
braking performance.
The brake pedal pulsation caused by the
anti- lock brake system may indicate haz-
ardous road surface conditions. Although
the anti- lock brake system assists in pro-
viding vehicle control, it is still important
to drive with all due care, because the
anti- lock brake system cannot overcome
the laws of physics that act on your ve-
hicle: Braking capab ility is dependent on tire
friction with the road surface.

SUPRA (U)
11 4
Even though the anti- lock brake sys-
tem is operating, a driver cannot main-
tain full control on certain slippery road
surfaces, when cornering at high
speeds, or in violent maneuvers.
Avoid high speeds on wet roads. The
anti- lock brake system cannot elimi-
nate the risk of hydroplaning and loss
of tire friction.
Always maintain a safe distance from the
vehicle in front of you. Compared with
vehicles not fitted with an anti- lock brake
system, your vehicle may r equire a longer
stopping distance in the following cases:
Driving on rough, gravel or snow- cov-
ered roads.
Driving with tire chains installed.
Driving on roads where the road sur-
face is pitted or has other differences
in surface height.
ºABSº warning light
This light comes on when the ignition key
is turned to the ºONº position. After a few
seconds, the light will go off.
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.
The light does not come on as de-
scribed above, or remains on.
The light comes on while driving. Even if the anti- lock brake system should
fail, the brake system will still operate
conventionally. However, when the ºABSº
warning light is on (and the brake system
warning light is off), the 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. Have your vehicle checked
by your Toyota dealer as soon as pos-
sible.
DRUM- IN- DISC TYPE PARKING BRAKE SYSTEM
Your vehicle has a drum- in- disc type
parking brake system. This type of brake
system n
eeds bedding- down of the brake
shoes periodically or whenever the parking
brake shoes and/or drums are replaced.
Have your Toyota dealer perform the bed-
ding- down.

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150
Tire surface and wheel nuts
Check the tires carefully for cuts, damage
or excessive wear. See Chapter 7- 2 for
additional information. When checking the
tires, make sure no nuts are missing, and
check the nuts for looseness. Tighten
them if necessary.
Fluid leaks
Check underneath for leaking fuel, oil, wa-
ter or other fluid after the vehicle has
been parked for a while. If you smell fuel
fumes or notice any leak, have the cause
found and corrected immediately.
Doors and engine hood
Check that all doors including back door
operate smoothly and all latches lock se-
curely. Make sure the engine hood sec-
ondary latch secures the hood from open-
ing when the primary latch is released.
INSIDE THE VEHICLE
Items listed below should be checked
regularly, e.g. while performing periodic
services, cleaning the vehicle, etc.
Lights
Make sure the headlights, stop lights, tail
lights, turn signal lights, and other lights
are all working. Check headlight aim.
Service reminder indicators and warning
buzzers
Check that all service reminder indicators
and warning buzzers function properly.
Steering wheel
Be alert for changes in steering condition,
such as hard steering or strange noise.
Seats
Check that all front seat controls such as
seat adjusters, seatback recliner, etc. op-
erate smoothly and that all latches lock
securely in any position. For folding- down
rear seatback, check that the latches lock
securely. Make sure the front headrests
are firmly secured.
Seat belts
Check that the seat belt system such as
buckles, retractors and anchors operate
properly and smoothly. Make sure the belt
webbing is not cut, frayed, worn or dam- aged.
Accelerator pedal
Check the pedal for smooth operation and
uneven pedal effort or catching.
Clutch pedal
Check the pedal for smooth operation.
Brake pedal
Check the pedal for smooth operation and
that the pedal has the proper clearance.
Check the brake booster function.Brakes
At a safe place, check that the brakes do
not pull to one side when applied.
Parking brake
Check that the lever has the proper travel
and that, on a safe incline, your vehicle
is held securely with only the parking
brake applied.
Automatic transmission ºParkº mecha-
nism
Check the lock release button of the se-
lector lever for proper and smooth opera-
tion. On a safe incline, check that your
vehicle is held securely with the selector
lever in ºPº position and all brakes re-
leased.
IN THE ENGINE COMPARTMENT
Items listed below should be checked
from time to time, e.g. each time when
refueling.
Washer fluid
Make sure there is sufficient fluid in the
tank. See Chapter 7- 3 for additional in-
formation.
Engine coolant level
Make sure the coolant level is between
the ºFULLº and ºLOWº lines on the see-
through reservoir when the engine is cold.
See Chapter 7- 2 for additional information.

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NOTICE
Do not attempt to use a tire chain onthe compact spare tire, as it may re-sult in damage to the vehicle as wellas the tire.
Replacing wheels
WHEN TO REPLACE YOUR WHEELS
If you have wheel damage such as
bending, cracks or heavy corrosion, the
wheel should be replaced.
If you fail to replace damaged wheels, the
tire may slip off the wheel or they may
cause loss of handling control.
WHEEL SELECTION
When replacing wheels, care should be
taken to ensure that the wheels are re-
placed by ones with the same load ca-
pacity, diameter, rim width, and offset.
This must be observed on compact spare
tires, too.
Correct replacement wheels are available
at your Toyota dealer.
A wheel of a different size or type may
adversely affect handling, wheel and bear-
ing life, brake cooling, speedometer/odom-
eter calibration, stopping ab ility, headlight
aim, bumper height, vehicle ground clear-
ance, and tire or snow chain clearance to
the body and chassis. Replacement with used wheels is not rec-
ommended as they may have been sub-
jected to rough treatment or high mileage
and could fail without warning. Also, bent
wheels which have been straightened may
have structural damage and therefore
should not be used. Never use an inner
tube in a leaking wheel which is designed
for a tubeless tire.

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80050F10
80050F08
Fuses (type A) 1. EFI NO.2 30 A: Multiport fuel injection
system/s equential multiport fuel injec-
tion system
2. EFI NO.1 30 A: Multiport fuel injection
system/s equential multiport fuel injec-
tion system
3. AM2 30 A: Starter system
4. FOG 15 A: Front fog lights
5. HAZ- HORN 15 A: Emergency flashers,
horns
6. TRAC 7.5 A: Traction control system
7. ETCS 15 A: Electronic Traction Control
System
8. ALT- S 7.5 A: Charging system 9. DOME 7.5 A:
Interior lights, personal
lights, door courtesy lights, luggage
compartment light, ignition switch light,
open door warning light, theft deterrent
system
10. RAD NO.1 20 A: Radio cassette tape
player
11. HEAD (RH) 15 A: Right- hand headlight
12. HEAD (LH) 15 A: Left- hand headlight
13. 30 A: Spare fuse
14. 7.5 A: Spare fuse
15. 15 A: Spare fuse
16. WIPER 20 A: Windshield wipers and
washer, rear window wiper and washer
17. HTR 7.5 A: Air conditioning system
18. ST 7.5 A: Starter system
19. IGN 7.5 A: Charging system, discharge
warning light, multiport fuel injection
system/s equential multiport fuel injec-
tion system, SRS airbag system
20. PANEL 10 A: Instrument panel lights,
instrument panel lights control
21. MIR- HTR 10 A: Mirror heaters
22. TURN 7.5 A: Turn signal lights
23. STOP 15 A: Stop lights, cruise control
system cancel device

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24. CIG 15 A:
Cigarette lighter, air condi-
tioning system, SRS airbag system,
theft deterrent system, shift lock con-
trol system
25. RAD NO.2 7.5 A: Radio, cassette tape
player, power antenna
26. TAIL 10 A: Tail lights, parking lights,
front side marker lights, rear side
marker lights, licence plate lights
27. ECU- IG 10 A: Cruise control system,
anti- lock brake system, power steering,
power antenna, theft deterrent system,
shift lock control system, traction con-
trol system
28. GAUGE 10 A: Gauges and meters, ser-
vice reminder indicators and warning
buzzers (except discharge and open
door warning lights), rear window de-
fogger, charging system, cruise control
system, electronically controlled auto-
matic transmission system, traction
control system
29. ECU- B 10 A: Air conditioning system,
cruise control system, anti- lock brake
system, SRS airbag system, traction
control system
30. OBD - II 7.5A: On- board diagnosis sys-
tem Fuses (type B)
31. DOOR 30 A: Power window, power
door lock system, theft deterrent sys-
tem
32. DEFOG 30 A: Rear window defogger
Fuses (type C)
33. ALT 120 A: Charging system
34. MAIN 50 A: Starter system, headlights
35. HTR 50 A: Air conditioning system
36. FAN 30 A: Electric cooling fans
37. ABS NO.1 60 A: Anti- lock brake sys-
tem, traction control system
38. AM1 50 A: Electronic ignition system/
distributor ignition system
39. POWER 60 A: ºPANELº, ºSTOPº,
ºTAILº, ºECU- Bº, ºDEFOGº and
ºDOORº fuses