1999 LEXUS SC300 air

Engine compartment
ELECTRICAL COMPONENTS
377
No.FUSEAMPERECIRCUIT
1ENGINE7.5Charging system
2HTR10Air conditioning system, rear
window defogger
3WIPER20Windshield wipers and washer
4ST7.5
Starting system, cruise control
system, multiport fuel injection
system/sequential multiport fuel
injection system, instrument panel
lights
5IGN7.5
Discharge warning light, multiport
fuel injection system/sequential
multiport fuel injection system,
SRS airbag system
6PANEL7.5Instrument panel lights, glovebox
light
7MIR±HTR10Outside rear view mirror defogger
8TURN7.5Turn signal lights
9STOP15Stop lights, cruise control system
cancel device
10CIG15
Cigarette lighter, theft deterrent
system, shift lock system, SRS
airbag system, instrument panel
lights

ELECTRICAL COMPONENTS
378
No.FUSEAMPERECIRCUIT
11RADIONO.27.5Radio, cassette tape player,
compact disc player, power
antenna, power rear view mirrors
12TAIL7.5Tail lights, parking lights, side
marker lights, license plate lights
13ECU±IG15
Cruise control system, power
steering control system, shift lock
system, anti±lock brake system,
SRS airbag system, power door
lock system, preset steering system,
traction control system,
electronically controlled
hydraulic±driven cooling system,
passenger 's seat control system
14GAUGE10
Gauges and meters, service
reminder indicators and warning
buzzers (except discharge and open
door warning lights), back±up
lights, electronically controlled
automatic transmission system,
automatic transmission overdrive
system, headlight
15ECU±B15SRS airbag system, power rear
view mirrors
16OBD7.5On±board diagnosis system
17FOG15Fog lights
18SEAT±HT R15Seat heater

ELECTRICAL COMPONENTS
379
No.FUSEAMPERECIRCUIT
19PWR30Preset steering, electronic
moon roof, power windows,
theft deterrent system
20IG SW40Starting system
21DOOR30
Theft deterrent system, seat
control system, fuel opener
control system, power door
lock system
22DOME10
Interior light, personal lights,
door courtesy lights, ignition
switch light, open door
warning light, trunk light,
electronic moon roof system,
preset steering system, seat
belt reminder system, cruise
control system, air
conditioning system, inside
rear view mirror, door lock
and theft deterrent system,
foot light, power rear view
mirror, locking with wireless
remote control system,
passenger 's seat control
system.
23EFI30Multiport fuel injection
system/sequential multiport
fuel injection system
24HAZ±HORN15Emergency flashers, horns
No.FUSEAMPERECIRCUIT
25RADIONO.120Radio, cassette tape player,
compact disc player, power
antenna
26TEL15Telephone
27ALT
SENCING7.5Charging system
28ETCS15Traction control system
29HEAD(RH±LWR)*115Right±hand headlight (low
beam)
30HEAD(LH±LWR)*215Left±hand headlight (low
beam)
30DRL7.5Daytime Running Light
System
29HEAD(RH±LPR)15Right±hand headlight (high
beam)
30HEAD(LH±LPR)15Left±hand headlight (high
beam)
31INJ30SC300
Starting system
*1 SC300: HEAD (RH)
*2 SC300: HEAD (LH)

ELECTRICAL COMPONENTS
394If the headlights or other electrical components do not
work and the blade type fuses are O.K., check the
cartridge type fuses. If any of the cartridge type fuses are
blown, they must be replaced.
If there is an overload in the circuits from the battery, the fuses
are designed to blow before the entire wiring harness is
damaged.
NOTICE
Before replacing the fuses, have the cause of electrical
overload determined and repaired by your Lexus dealer.

BODY
406
PROTECTING YOUR VEHICLEFROM CORROSION
Proper care of your Lexus can help ensure long±term
corrosion prevention.
The most common causes of corrosion to your vehicle are:

The accumulation of road salt, dirt and moisture in
hard±to±reach areas under the vehicle.

Chipping of paint or undercoating caused by minor
accidents or by stones and gravel.
The following conditions will cause or accelerate
corrosion of your vehicle, so it is important to keep your
vehicle, particularly the underside, as clean as possible
and to repair any damage to paint or protective coatings
as soon as possible.

The presence of road salt or dust control chemicals, salt in
the air near the sea coast, industrial air pollution.

High humidity, especially at temperatures just above
freezing point.

Certain parts of your vehicle are wet or damp for an
extended period of time, even though other parts of the
vehicle are dry.

Components of the vehicle which are prevented from
quick±drying due to lack of proper ventilation are exposed
to high temperature. To help prevent corrosion on your Lexus, follow these
guidelines:
Keep your vehicle clean by regular washing.
In addition,
observe the following points.

If you drive on salted roads in the winter or if you live near
the ocean, you should hose off the undercarriage at least
once a month to minimize corrosion.

High pressure water or steam is effective for cleaning the
vehicle's underside and wheel housings. Pay particular
attention to these areas as it is difficult to see all the mud
and dirt. It will do more harm than good to simply wet the
mud and debris without removing them. The lower edge
of doors, rocker panels and frame members have drain
holes which should not be allowed to clog with dirt as
trapped water in these areas can cause corrosion.

Wash the underside of the vehicle thoroughly when winter
is over.
See ºWashing and waxingº for more tips.
Check the condition of your vehicle's paint and trim. If
you find any chips or scratches in the paint, touch them up
immediately to prevent corrosion from starting. If the chips
or scratches have gone through the bare metal, have a
qualified body shop make the repair.

BODY
412
Carpets, Windows and Seat Belts
Begin by vacuuming thoroughly to remove as much dirt as
possible. Several types of foam cleaners are available; some
are in aerosol cans and others are powders or liquids which
you mix with water to produce a foam. To shampoo the
carpets, use a sponge or brush to apply the foam. Rub in
overlapping circles. Do not apply water ± the best results are
obtained by keeping the carpet as dry as possible. Read the
shampoo instructions and follow them closely.
The seat belts may be cleaned with mild soap and water or
with lukewarm water.
Use a cloth or sponge. As you are cleaning, check the belts
for excessive wear, fraying or cuts.
NOTICE

Use a good foam±type shampoo to clean the carpets.

Do not use dye or bleach on the belts ± it may weaken
them.

Do not use the belts until they become dry.

The windows may be cleaned with any household
window cleaner.

When cleaning the inside of the rear window, be
careful not to scratch or damage the heater wires.
Air Conditioning Control Panel, Car Audio,
Instrument Panel, Console Panel, and
Switches
Use a soft damp cloth for cleaning.
Soak a clean soft cloth in water or lukewarm water then
lightly wipe off any dirt.
NOTICE

Do not use organic substances (solvents, kerosene,
alcohol, gasoline, etc.) or alkaline or acidic solutions.
These chemicals can cause discoloring, staining or
peeling of the surface.

If you use cleaners or polishing agents, make sure
their ingredients do not include the substances
mentioned above.

If you use a liquid car freshener, do not spill the liquid
onto the vehicle's interior surfaces. It may contain the
ingredients mentioned above. Immediately clean any
spill using the method mentioned above.
If you have any questions about the cleaning of your
Lexus, your local Lexus dealer will be pleased to answer
them.