Lexus ES300 1995 Electrical Components

SECTION 6 – 4
189
SERVICE PROCEDURES AND
SPECIFICATIONS
Electrical components
Specifications190 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking battery condition194 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery recharging precautions196 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking and replacing the blade type fuses196 . . . . . . . . . . . . . . . .
Checking the cartridge type fuses198 . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding washer fluid199 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the headlight aim200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing light bulbs201 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL COMPONENTS
Driver’s side kick panel
190
SPECIFICATIONS
− LOCATION OF FUSES
Instrument panel
(Canada only)
Passenger’s side kick panel
Engine compartment
Driver’s
side kick
panel
− FUSES
Instrument panel

ELECTRICAL COMPONENTS
Engine compartment (U.S.A.)
Engine compartment (Canada)
191

ELECTRICAL COMPONENTS
Passenger’s side kick panel
192No.FUSEAMPERECIRCUIT
1ECU-IG15
Cruise control system, power
steering control system, shift
lock system, anti-lock brake
system, SRS airbag system,
power door lock and theft
deterrent system, power
antenna, telephone, electronic
cooling fan system
2GAUGE15
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, rear window
and outside rear view mirror
defogger
3STOP20
Stop lights, cruise control
system cancel device, shift lock
system, anti-lock brake system
4SEAT
HTR15Seat heater
5WIPER20Windshield wipers and washer,
headlight cleaner

ELECTRICAL COMPONENTS
193
No.FUSEAMPERECIRCUIT
6TURN7.5Turn signal lights
7IGN7.5
Multiport fuel injection system
/ sequential multiport fuel
injection system, electronic
cooling fan system, SRS airbag
system
8CIG /
RADIO15
Radio, cassette tape player,
compact disc player, power
antenna, power rear view
mirrors, cigarette lighter, theft
deterrent system, shift lock
system, SRS airbag system,
clock
9MIR-HTR10Outside rear view mirror
defogger
10TAIL15Tail lights, parking lights.
11SRS7.5SRS airbag system
12STARTER10
Starting system, multiport fuel
injection system / sequential
multiport fuel injection system
13AM140Electronic ignition system /
distributor ignition system
14P/W30Electronic moon roof, power
windows
15DEF40Rear window and outside rear
view mirror defogger
No.FUSEAMPERECIRCUIT
16OBD7.5On board diagnosis
17ALT-S7.5Charging system
18EFI15
Multiport fuel injection system
/ sequential multiport fuel
injection system
19HAZ10Emergency flashers
20AM230
Electronic ignition system /
distributor ignition system,
multiport fuel injection system
/ sequential multiport fuel
injection system
21TEL15Telephone
22HORN10Horns
23DOME20
Radio, cassette tape player,
compact disc player, power
antenna, interior light, personal
lights, door courtesy lights,
ignition switch light, trunk light,
electronic moon roof system,
instrument panel lights, door
lock and theft deterrent system,
locking with wireless remote
control system
24ECU-B15
SRS airbag system, anti-lock
brake system, daytime running
light system

ELECTRICAL COMPONENTS
194
No.FUSEAMPERECIRCUIT
25HEAD
(LH) HI15
Vehicles sold in the U.S.A.
Left-hand headlight
Vehicles sold in Canada
Left-hand headlight (high beam)
26HEAD
(RH) HI15
Vehicles sold in the U.S.A.
Right-hard headlight
Vehicles sold in Canada
Right-hand headlight (high (beam)
27ALT100Charging system
28ABS60Anti-lock brake system
29HEAD
(LWR-LH)15Vehicles sold in Canada
Left-hand headlight (low beam)
30HEAD
(LWR-RH)15Vehicles sold in Canada
Right-hand headlight (low beam)
31FOG15Fog lights
32RADIO20
Radio, cassette tape player,
compact disc player, power
antenna
33DRL7.5Vehicles sold in Canada
Daytime Running Light System
34HTR40Environmental control system

SPASpare fuse
CHECKING BATTERY CONDITION
CAUTION:
BATTERY PRECAUTIONS
The battery produces flammable and explosive hydrogen
gas.
Do not cause a spark by contacting the battery
terminals with tools.
Do not smoke or light a match near the battery.
The electrolyte contains poisonous and corrosive sulfuric
acid.
Avoid contact with eyes, skin or clothes.
Never inhale or swallow electrolyte.
Wear protective safety glasses when working near the
battery.
Keep children away from the battery.
EMERGENCY MEASURES
If electrolyte gets in your eyes, flush your eyes with
clean water for at least 15 minutes and get immediate
medical attention. If possible, continue to apply water
with a sponge or cloth while traveling to the medical
office.
If electrolyte gets on your skin, thoroughly wash the
contacted area. If you feel a pain or burn, get medical
attention immediately.

ELECTRICAL COMPONENTS
195 If electrolyte gets on your clothes, there is a possibility
of its soaking through to your skin, so immediately take
off the exposed clothing and follow the procedure
above, if necessary.
If you happen to swallow electrolyte, drink a large
quantity of water or milk. Follow with milk of magnesia,
beaten raw egg or vegetable oil. Then go immediately
for emergency help.
Hold-down clamp
Terminals
1. Check the battery for corroded or loose connections,
cracks, or loose hold-down clamps.
a. If the battery is corroded, wash it off with a solution of warm
water and baking soda. Coat the terminals with grease to
prevent further corrosion.
b. If the connections are loose, tighten the clamp bolts − but
do not overtighten.
c. Tighten the hold-down clamp only enough to keep the
battery firmly in place. Overtightening may damage the battery
case.
NOTICE:
Make sure the engine and all accessories are turned
off before performing maintenance.
Remove the ground cable first and reinstall it last.
Be careful not to cause a short circuit with tools.
Take care no solution gets into the battery when
washing it.
Red
White
Blue
2. Check the hydrometer as shown.
BLUE − Good condition.
WHITE −Charging necessary. Have the battery checked by
your Lexus dealer.
RED − Have the battery checked by your Lexus dealer.

ELECTRICAL COMPONENTS
196
NOTICE:
Your Lexus has a maintenance free battery. Do not
refill the battery with water.
Use a cover on the battery for longer life.
BATTERY RECHARGING
PRECAUTIONS
During recharging, the battery is producing hydrogen
gas.
Therefore, before recharging:
1. If recharging with the battery installed on the vehicle, be
sure to disconnect the ground cable.
2. Make sure the power switch on the recharger is off when
connecting the charger cables to the battery and when
disconnecting them.
CAUTION:
Always charge the battery in an unconfined area. Do
not charge the battery in a garage or closed room where
there is not sufficient ventilation.
Only do a slow charge (5 A or less). Charging at a
quicker rate is dangerous. The battery may explode
causing personal injuries.
NOTICE:
Never recharge the battery while the engine is running.
Also, be sure all accessories are turned off.
CHECKING AND REPLACING THE
BLADE TYPE FUSES
Pull-out tool
Spare fuses
Engine compartment
Passenger’s side kick panel

ELECTRICAL COMPONENTS
197
Driver’s side kick panel
Instrument panel
Pull-out tool
1. Turn the ignition switch off and open the fuse box lid.
Determine which fuse may he causing the problem. The lid of
the fuse box shows the name of the circuit for each fuse.
2. Make sure the inoperative component is turned off.
Pull the suspected fuse straight out with the pull-out tool
and check it. If it has blown, push a new fuse into the clips.
GoodBlownGoodBlown
a. Look carefully at the fuse. If the thin wire is broken, the fuse
has blown. If you are not sure or if it is too dark to see, try
replacing the suspected fuse with one of the same value that
you know is good.

ELECTRICAL COMPONENTS
198b. Install only a fuse with the amperage rating designated on
the fuse box lid.
If you do not have a spare fuse, in an emergency you can pull
out the “CIG / RADIO”, “RADIO”, “DOME” or “MIR-HTR” fuse,
which may be dispensable for normal driving, and use it if its
amperage rating is the same.
If you cannot use one of the same amperage, use one lower
than, but as close as possible to, the amperage. If the
amperage is lower than that specified, the fuse might blow out
again but this does not indicate anything wrong. Be sure to get
the correct fuse as soon as possible and return the substitute
to its original clips.
It is a good idea to purchase a set of spare fuses and keep them
in your vehicle for emergencies.
If the new fuse immediately blows out, there is a problem with
the electrical system. Have your Lexus dealer correct it as
soon as possible.
CAUTION:
Never use a fuse with a higher amperage rating, or any
other object, in place of a fuse. This may cause extensive
damage and possibly a fire.
CHECKING THE CARTRIDGE TYPE
FUSES
Engine compartment
Passenger’s side kick panel
If 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.