1994 Lexus ES300 Electrical Components

SECTION 6 – 4
197
SERVICE PROCEDURES AND
SPECIFICATIONS
Electrical components
Specifications198 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking battery condition
202 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery recharging precautions
204 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking and replacing the blade type fuses
204 . . . . . . . . . . . . . . . .
Checking the cartridge type fuses206 . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing the windshield wiper blades207 . . . . . . . . . . . . . . . . . . . . . .
Adding washer fluid210 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the headlight aim210 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing light bulbs211 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL COMPONENTS
Passenger’s side kick panel
Instrument panel
Driver’s
side kick
panel
Engine compartment(Canada only)
Instrument panel
Driver’s side kick panel
198
SPECIFICATIONS
− LOCATION OF FUSES− FUSES

Engine compartment (U.S.A.)
Engine compartment (Canada)
ELECTRICAL COMPONENTS
199

Passenger’s side kick panel
ELECTRICAL COMPONENTS
200
NO.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
3STOP25
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
201
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
22HORH10Horns
23DOME20
Radio, cassette tape player,
compact disc player, power
antenna, interior light,
personal lights, door courtesy
lights, ignition switch light,
trunk room 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
202
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)15
Vehicles sold in Canada
Left-hand headlight
(low beam)
30HEAD(LWR-RH)15
Vehicles 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 a 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
Terminals
Hold-down clamp
Blue
White
Red
203
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.
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:

Be sure the engine and all accessories are off before
performing maintenance.

Remove the ground cable first and reinstall last.

Be careful not to cause a short circuit with tools.

Take care no solution gets into the battery when
washing it.
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
Pull-out toolEngine compartment
Spare fuses
Passenger’s side kick panel
204
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. Be 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 (5A or less). Charging at a
quicker rate is dangerous.
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