lexus LS400 1996 Gauges, Meters and Service Reminders / 1996 LS400: ELECTRICAL COMPONENTS

211
SECTION 6 ± 4
SERVICE PROCEDURES AND
SPECIFICATIONS
Electrical components
Specifications 212
Checking battery condition 216
Battery recharging precautions 220
Checking and replacing the blade type fuses 221
Checking the cartridge type fuses 223
Adding washer fluid 224
Checking the headlight aim 224
Replacing light bulbs 226

ELECTRICAL COMPONENTS
212
SPECIFICATIONS
± FUSE LOCATIONS

Engine compartment
Driver's side instrument panel
± FUSES
Driver's side instrument panel

ELECTRICAL COMPONENTS
213
Engine compartment

ELECTRICAL COMPONENTS
214
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,
Air conditioning 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 system
13TRAC15Traction control system
14STOP LP25Stop 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
20AIR SUS20Height control system

ELECTRICAL COMPONENTS
215
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
30FR S/HTR20Seat heater
31ALT±S7.5Charging system
32SRS7.5SRS airbag system
33TEL15Telephone
34ANTENA10Power antenna
No.FUSEAMPERECIRCUIT
35SEC
HORN7.5Theft deterrent system
36ECU±B15Anti±lock brake system,
Traction control 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
216
CHECKING BATTERY CONDITION
Precautions
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 the 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.

ELECTRICAL COMPONENTS
217
Checking battery exterior

TerminalsHold±down clamp
Check the battery for corroded or loose connections,
cracks, or loose hold±down clamps.
1. 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.
2. If the connections are loose, tighten the clamp bolts ± but
do not overtighten.
3. 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.
When checking the battery, 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.

ELECTRICAL COMPONENTS
218
Checking battery fluid
There are 2 types of batteries: maintenance type and
non±maintenance type.
A non±maintenance battery has ªMAINTENANCE FREE
BATTERYº on its top. A maintenance type battery does not
have such indication.
Maintenance type battery
Check the fluid condition by the fluid level lines on the side
of the battery. Or if the battery has a hydrometer on its top,
you can also check the hydrometer.
Non±maintenance type battery
Check the battery condition by the hydrometer on the top of
the battery.(a) Checking by the fluid level lines (Maintenance type
battery only)

Upper lineLower line
The fluid (electrolyte) level must be between the upper
and lower lines.
When checking the fluid level, look at all six cells, not just one
or two.
If the level is lower than the lower line, add distilled water.
(See ªAdding distilled waterº on page 220.)

ELECTRICAL COMPONENTS
219 (b) Checking by the hydrometer
Check the battery condition by the hydrometer color.
Maintenance type battery

BLUE ± Good condition.
WHITE ± Charging necessary. Have the battery checked
by your Lexus dealer.
RED ± Add distilled water. (See ªAdding distilled waterº
on page 220.)
Non±maintenance type battery

BLUE ± Good condition.
WHITE ± Charging necessary. Have the battery checked
by your Lexus dealer.
RED ± Have the battery checked by your Lexus dealer.
NOTICE
For non±maintenance type battery: Do not refill the
battery with water.

ELECTRICAL COMPONENTS
220
Adding distilled water
(Maintenance type battery only)

LowO.K.
1. Remove the vent plugs.
2. Add distilled water to cells needing fluid.
If the side of your battery is covered, check the water level
by looking down directly above the cell as illustrated above.
3. Retighten the vent plugs securely.
NOTICE
Do not overfill the cells. Excess electrolyte could
squirt out of the battery during heavy charging,
causing corrosion or damage.
Use a cover on the battery for longer life.
BATTERY RECHARGING
PRECAUTIONS
During recharging, the battery is producing hydrogen
gas.
Therefore, before recharging:
1. Maintenance type batteries ± Remove the vent plugs.
2. If recharging with the battery installed on the vehicle, be
sure to disconnect the ground cable.
3. 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.
Non±maintenance batteries: Only do a slow charge
(5 A or less). Charging at a quicker rate is
dangerous. The battery may explode causing
personal injuries.
Maintenance type batteries: Be sure to remove the
vent plugs before recharging.
NOTICE
Never recharge the battery while the engine is
running. Also, make sure all accessories are turned
off.