Lexus GS300 1998, GS350 1998, GS400 1998, GS430 1998, GS450H 1998 Owner Manual

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SECTION 6 – 4

SERVICE PROCEDURES AND SPECIFICATIONS

Electrical components

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

404

Checking battery condition . . . . . . . . . . . . . . . . . . . . . . . . . . .

413

Battery recharging precautions . . . . . . . . . . . . . . . . . . . . . . . .

419

Checking and replacing the blade type fuses . . . . . . . . . . . . .

420

Checking the cartridge type fuses . . . . . . . . . . . . . . . . . . . . . .

426

Adding washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

428

Checking the headlight aim . . . . . . . . . . . . . . . . . . . . . . . . . .

428

Replacing light bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

431

403

ELECTRICAL COMPONENTS

SPECIFICATIONS

– FUSE LOCATION

64G004–1



Engine compartment

Passenger’s side kick panel

Driver’s side kick panel

Engine compartment (Canada only)

– FUSES

404

64G015

Driver’s side kick panel

64G014

Passenger’s side kick panel

ELECTRICAL COMPONENTS

405

ELECTRICAL COMPONENTS

Engine compartment

64G013

406

64G026

Engine compartment (Canada only)

ELECTRICAL COMPONENTS

407

ELECTRICAL COMPONENTS

No.

13 14

FUSE

WASHER 20 Windshield washer

FR FOG 15 Fog lights

TAIL 10

SRS–ACC 15 SRS

GAUGE 10

FUEL OPN 10 Fuel filler door opener

D FR

DOOR

PANEL 7.5

HEATER 10 Air conditioning

SRS–B 5

D P/SEAT 30 Power seat system

RADIO

NO.2

WIPER 25 Windshield wipers

OBD 7.5 On–board diagnosis

AMPERE

Tail lights, Side marker lights, License plate lights, Parking lights

Back–up lights, Gauges and meters, service reminder indicators and buzzers

Power window system, Door lock system, Wireless remote control

Emergency flashers, Headlight cleaner

Gauges and meters, service reminder indicators and warning buzzers

Audio, Shift lock system

CIRCUIT

408

ELECTRICAL COMPONENTS

No.

21 22 23

FUSE

STOP 15

CIG 15 Cigarette lighter, Power outlet

ECU–IG 15

STARTER 5 Starting system

IGN 5

D RR

DOOR

RR FOG 10 No circuit

M/R HTR 10 Outside rear view mirror

S/ROOF 25 Electronic moon roof

P FR

DOOR

P P/SEAT 30

AMPERE

Stop lights, Anti–lock brake system, Traction control system

Power window, Door lock system, Wireless remote control, Theft deterrent system

Multiport fuel injection system/sequential multiport fuel injection system, SRS, Anti–lock brake system, Vehicle skid control system, Cruise control system

Power window system, Door lock system, Wireless remote control

Power seat system, Tilt and telescopic steering

CIRCUIT

409

ELECTRICAL COMPONENTS

DOME 10

SEAT HTR 20 Seat heater

No.

28 29 30

34 35

FUSE

4WS 25 No circuit

TV 15 No circuit

ECU–B2 5 Power seat system

P RR

DDOR

ECU–B1 20

MPX–B 10

HORN 10 Horn

ETCS 15 Electronic throttle control system

AM2 15

TEL 15 No circuit

AMPERE

Interior lights, Personal lights, Vanity lights, Trunk light, Clock

CIRCUIT

Power window system, Door lock system, Wireless remote control

Power window system, Door lock system, Wireless remote control, Theft deterrent system, Trunk lid opener, Interior lights, Personal lights, Clock, Headlight cleaner

Power window system, Door lock system, Wireless remote control, Theft deterrent system, Trunk lid opener

Starting system, Multiport fuel injection system/sequential multiport fuel injection system

410

ELECTRICAL COMPONENTS

TURN–HA

No.

FUSE

EFI 25

ALT–S 5 Charging system

RADIO

NO.1

DRL NO.2 30

H–LP L

UPR

H–LP R

UPR

AMPERE

DRL NO.1 30

H–LP L

LWR

H–LP R

LWR

H–LP R

UPR

Turn signal lights

CIRCUIT

Multiport fuel injection system/sequential multiport fuel injection system, Emission control system

Audio

Vehicles sold in Canada:

Daytime running light system

Vehicles sold in U.S.A.:

Left–hand headlight (high beam)

Vehicles sold in U.S.A.:

Right–hand headlight (high beam)

Vehicles sold in Canada:

Daytime running light system Left–hand headlight (low beam)

Right–hand headlight (low beam)

Vehicles sold in Canada:

Right–hand headlight (high beam)

411

ELECTRICAL COMPONENTS

H–LP L



UPR

SPARE Spare fuse

Vehicles sold in Canada:

Right–hand headlight (high beam)

412

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 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.

ELECTRICAL COMPONENTS

413

ELECTRICAL COMPONENTS

 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.

64G001

Checking battery exterior

414



Terminals 2Hold–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.

ELECTRICAL COMPONENTS

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.

Checking battery fluid

There are 2 types of batteries: maintenance type and non–maintenance type.

A non–maintenance battery has ”MAINTENANCE FREE BATTERY” 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 battery

Check the battery condition by the hydrometer on the top of the battery.

415

ELECTRICAL COMPONENTS

(a) Checking by the fluid level lines (Maintenance type battery only)

64G002

Upper line 2Lower 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 ”Adding distilled water” on page 418.)

(b) Checking by the hydrometer

416

64G003

ELECTRICAL COMPONENTS

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 ”Adding distilled water” on page 418.)

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 battery: Do not refill the battery with water.

417

ELECTRICAL COMPONENTS

Adding distilled water (Maintenance type battery only)

64L062

Low 2O.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.

418

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.

ELECTRICAL COMPONENTS

419

ELECTRICAL COMPONENTS

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

420

64G006–1

Driver’s side kick panel

64G017

Passenger’s side kick panel

ELECTRICAL COMPONENTS

421

ELECTRICAL COMPONENTS

64G005–2

Engine compartment

Spare fuses 2Pull–out tool

64G027

Engine compartment (Canada only)

1. Turn the ignition switch off and open the fuse box lid.

Determine which fuse may be causing the problem. The lid of the fuse box shows the name of the circuit for each fuse.

422

64L013

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.

ELECTRICAL COMPONENTS

423

ELECTRICAL COMPONENTS

64G008

Good Blown

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.

b. 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”, ”RAD NO.1” or ”OBD” 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.

424

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.

ELECTRICAL COMPONENTS

425

ELECTRICAL COMPONENTS

CHECKING THE CARTRIDGE

TYPE FUSES

64G019–1

Good 2Melted



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.

426

CAUTION

Always use a genuine Lexus fuse or equivalent for replacement. Never install an ordinary wire – even for a temporary fix. This may cause extensive damage and possibly a fire.

ELECTRICAL COMPONENTS

427

ELECTRICAL COMPONENTS

ADDING WASHER FLUID

64G009

If the washer tank becomes nearly empty, add washer fluid.

You may use plain water as washer fluid. However, in cold areas where temperatures range below the freezing point, use washer fluid containing antifreeze. This product is available at your Lexus dealer and most auto parts stores. Follow the manufacturer’s directions for how much to mix with water.

NOTICE

Do not use engine antifreeze or any other substitute because it may damage your vehicle’s paint.

428

CHECKING THE HEADLIGHT

AIM

64G020–1

Beam angle gauge (vertical movement)



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.

ELECTRICAL COMPONENTS

429

ELECTRICAL COMPONENTS

64G021–1

Bubble 2Acceptable range



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

430

64G022

Mark 2Acceptable range



Horizontal movement gauge: The mark should not deviate by more than one mark 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.

ELECTRICAL COMPONENTS

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.

431

ELECTRICAL COMPONENTS

CAUTION

 Do not disassemble, repair or take apart the low beam

headlight bulbs, connector, power supply circuits and rotated components. Or you may be injured by electric shocks. Call your dealer when the headlights fail to work or have to be replaced or disposed of.

 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.

Only use a bulb of the listed type.

432

NOTICE

LIGHT LOCATION

64G023–1

+ 434 hidden pages

Lexus GS300 1998, GS350 1998, GS400 1998, GS430 1998, GS450H 1998 Owner Manual

Specifications and Main Features

Frequently Asked Questions

User Manual