light lexus LS400 1995 Gauges, Meters and Service Reminder Indicators / 1995 LS400: ELECTRICAL COMPONENTS

SECTION 6 – 4
219
SERVICE PROCEDURES AND
SPECIFICATIONS
Electrical components
Specifications220 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking battery condition224 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery recharging precautions226 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking and replacing the blade type fuses226 . . . . . . . . . . . . . . . .
Checking the cartridge type fuses 228. . . . . . . . . . . . . . . . . . . . . . . . . .
Adding washer fluid 229. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the headlight aim230 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing light bulbs231 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL COMPONENTS
222
No.FUSEAMPERECIRCUIT
1TURN10Turn signal lights
2WIPER20Windshield wipers and washer
3ECU−IG15
Power steering control
system, Shift lock system,
Power seat control system,
Anti−lock brake system,
Traction control system,
Telephone, Charging system
4FR FOG15Fog lights
5PWR−IG10
Gauges and meters, service
reminder indicators and
warning buzzers,
Power antenna
6HEATER15Air conditioning system,
Rear window defogger
7GAUGE10
Gauges and meters, service
reminder indicators and
warning buzzers,
Preset steering,
Wireless remote control
system, Back−up lights
8IGN10
SRS airbag system,
Multiport fuel injection
system / sequential multiport
fuel injection system
9FUEL
OPN15Fuel opener system
No.FUSEAMPERECIRCUIT
10RR CIG15Rear cigarette lighter,
Shift lock system
11FR CIG15
Front cigarette lighter,
SRS airbag system,
Air conditioning system, Clock
12OBD II7.5On board diagnosis
13TRAC15Traction control system
14STOP25Stop lights,
High mounted stop light
15RADIO
NO.27.5Audio system,
Outside rear view mirror
16PANEL10
Instrument panel lights,
Air conditioning system,
Glovebox light, Audio system
17STARTER7.5Starting system
18TAIL10Tail lights, Side marker lights,
License plate lights.
19STOP−S5
Shift lock system,
Height control system,
Anti−lock brake system,
Traction control system
20AIRSUS20Height control system

ELECTRICAL COMPONENTS
223
No.FUSEAMPERECIRCUIT
21DOOR20Door lock
22HORN10Horns
23RADIO
NO.120Audio system
24H−LP
R LWR10
Vehicles sold in U.S.A.
Right−hand headlight (low
beam)
25H−LP
L LWR10
Vehicles sold in U.S.A.
Left−hand headlight (low
beam)
26H−LP
L UPR20Left−hand headlight (high
beam)
27H−LP
R UPR20Right−hand headlight (high
beam)
28EFI NO.210Emission control system
29MIR HTR10Outside rear view mirror
defogger
30S / HTR20Seat heater
31ALT−S7.5Charging system
32SRS7.5SRS airbag system
33TEL15Telephone
34ANTENA10Power antenna
No.FUSEAMPERECIRCUIT
35SEC−
HORN7.5Theft deterrent system
36ECU−B15
Anti−lock brake system,
Traction control system,
Air conditioning system
37HAZ15Emergency flashers
38EFI NO.120
Multiport fuel injection
system / sequential multiport
fuel injection system
39DOME FR7.5
Front door courtesy lights,
Ignition switch light,
Foot lights, Interior light,
Vanity lights,
Wireless remote control
system, Clock
40DOME RR7.5Rear courtesy lights,
Trunk light, Audio system
41DRL10Vehicles sold in Canada
Daytime Running Light System
42H−LP
RH10Vehicles sold in Canada
Right−hand headlight
43H−LP
LH10Vehicles sold in Canada
Left−hand headlight

ELECTRICAL COMPONENTS
224
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.
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
Terminals 2
Hold−down clamp
1. Check the battery for corroded or loose connections,
cracks, or loose hold−down clamps.

ELECTRICAL COMPONENTS
228
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

1
Good 2
Melted
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.
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.

ELECTRICAL COMPONENTS
230
CHECKING THE HEADLIGHT AIM

1
Beam angle gauge (vertical movement)
2
Beam angle gauge (horizontal movement)
Before checking the headlight aim:
1. Be sure that the body around the headlight is not deformed.
2. Park the vehicle on a level spot.
3. The driver gets into the driver’s seat and puts the vehicle in
a state readying for a driving (with a full tank).
4. Bounce the vehicle several times.

1
Bubble 2
Acceptable range
Vertical movement gauge: The bubble of the gauge should
not deviate from the center of the gauge by more than four
marks to either side of the gauge.

ELECTRICAL COMPONENTS
231

1
Mark 2
Acceptable range
Horizontal movement gauge: The mark should not deviate
by more than two marks to either side of the gauge.
If the error is over the value specified above, take the vehicle
to your Lexus dealer to adjust the headlight aim.
REPLACING LIGHT BULBS
The illustration on the following pages show the locations of
light bulbs. If it is necessary to replace a bulb, take your vehicle
to your Lexus dealer as soon as possible. Use bulbs with the
bulb numbers and wattage ratings given in the table.
CAUTION
Halogen bulbs have pressurized gas inside and require
special handling. They can burst or shatter if scratched
or dropped. Hold a bulb only by its plastic or metal case.
Do not touch the glass part of a bulb with bare hands.
NOTICE
Only use a bulb of the listed type.

ELECTRICAL COMPONENTS
232LIGHT LOCATION
Light Bulbs Bulb No. W Type
1 Headlights (High beam) HB3 60 A
2 Headlights H4 60 / 55 B
(High and low beam)
3 Fog lights HB4 51 C
4 Parking lights — 5 D
5 Front turn signal lights 1156 21 F
6 Front side marker lights — 3.8 D
Light Bulbs Bulb No. W Type
7 High mounted stoplight 921 18 D
8 License plate lights — 5 D
9 Back−up lights — 21 D
10 Stop and tail lights — 21 / 5 D
11 Rear turn signal lights — 21 D
12 Rear side marker lights — 5 D

ELECTRICAL COMPONENTS
233
Light Bulbs Bulb No. W Type
13 Front personal lights — 8 F
14 Front interior light — 8 E
15 Rear interior light — 8 D
Rear personal light — 5 F
16 Vanity lights — 3 E
17 Glovebox light — 1.2 D
18 Footlights — 1.4 D
19 Door courtesy lights 194 3.8 D
20 Trunk light 194 3.8 D
A: HB3 halogen bulbs
B: H4 halogen bulbs
C: HB4 halogen bulbs
D: Wedge base bulbs
E: Double end bulbs
F: Single end bulbs