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Lexus GS300/400 (2000 year). Service manual - part 162

BE1367

Medium Current Fuse and High Current Fuse

Equal Amperage Rating

V00076

Abbreviation

Part Name

Symbol

Illustration

FUSE

MEDIUM CURRENT FUSE

HIGH CURRENT FUSE

FUSIBLE LINK

CIRCUIT BREAKER

FUSE

M–FUSE

H–FUSE

–

INTRODUCTION

REPAIR INSTRUCTIONS

IN–5

(3)

Precoated parts are indicated in the component il-
lustrations by the ”

” symbol.

(g)

When necessary, use a sealer on gaskets to prevent
leaks.

(h)

Carefully observe all specifications for bolt tightening
torques. Always use a torque wrench.

(i)

Use of special service tools (SST) and special service ma-
terials (SSM) may be required, depending on the nature
of the repair. Be sure to use SST and SSM where speci-
fied and follow the proper work procedure. A list of SST
and SSM can be found in Preparation section in this
manual.

(j)

When replacing fuses, be sure the new fuse has the cor-
rect amperage rating. DO NOT exceed the rating or use
one with a lower rating.

IN0253

WRONG

CORRECT

IN0252

WRONG

CORRECT

IN–6

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INTRODUCTION

REPAIR INSTRUCTIONS

(k)

Care must be taken when jacking up and supporting the
vehicle. Be sure to lift and support the vehicle at the prop-
er locations (See page

IN–8

Cancel the parking brake on the level place and
shift the transmission in Neutral (or N position).

When jacking up the front wheels of the vehicle, at
first place stoppers behind the rear wheels.

When jacking up the rear wheels of the vehicle, at
fitst place stoppers before the front wheels.

When either the front or rear wheels only should be
jacked up, set rigid racks and place stoppers in front
and behind the other wheels on the ground.

After the vehicle is jacked up, be sure to support it
on rigid racks. It is extremely dangerous to do any
work on a vehicle raised on a jack alone, even for
a small job that can be finished quickly.

(l)

Observe the following precautions to avoid damage to the
following parts:
(1)

Do not open the cover or case of the ECU unless
absolutely necessary. (If the IC terminals are
touched, the IC may be destroyed by static electric-
ity.)

(2)

To disconnect vacuum hoses, pull off the end, not
the middle of the hose.

(3)

To pull apart electrical connectors, pull on the con-
nector itself, not the wires.

(4)

Be careful not to drop electrical components, such
as sensors or relays. If they are dropped on a hard
floor, they should be replaced and not reused.

(5)

When steam cleaning an engine, protect the elec-
tronic components, air filter and emission–related
components from water.

(6)

Never use an impact wrench to remove or install
temperature switches or temperature sensors.

(7)

When checking continuity at the wire connector, in-
sert the tester probe carefully to prevent terminals
from bending.

(8)

When using a vacuum gauge, never force the hose
onto a connector that is too large. Use a step–down
adapter for adjustment. Once the hose has been
stretched, it may leak air.

IN0002

Example

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INTRODUCTION

REPAIR INSTRUCTIONS

IN–7

(m)

Installation and removal of vacuum hose:
(1)

When disconnecting vacuum hoses, use tags to
identify where they should be reconnected to.

(2)

After completing a job, double check that the vacu-
um hoses are properly connected. A label under the
hood shows the proper layout.

(n)

Bleeding of hydraulic brake booster:
When repairing the hydraulic brake booster or ABS,
TRAC and VSC system, bleeding the air out of the hy-
draulic brake booster (See page

BR–4

(o)

Unless otherwise stated, all resistance is measured at an
ambient temperature of 20

C (68

F). Because the resis-

tance may be outside specifications if measured at high
temperatures immediately after the vehicle has been run-
ning, measurement should be made when the engine has
cooled down.

IN0D6–01

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INTRODUCTION

TERMS

IN–41

GLOSSARY OF SAE AND LEXUS TERMS

This glossary lists all SAE–J1930 terms and abbreviations used in this manual in compliance with SAE rec-
ommendations, as well as their LEXUS equivalents.

SAE

ABBREVIATIONS

SAE TERMS

LEXUS TERMS

( )––ABBREVIATIONS

A/C

Air Conditioning

Air Conditioner

ACL

Air Cleaner

Air Cleaner, A/CL

AIR

Secondary Air Injection

Air Injection (AI)

Accelerator Pedal

–

B+

Battery Positive Voltage

+B, Battery Voltage

BARO

Barometric Pressure

HAC

CAC

Charge Air Cooler

Intercooler

CARB

Carburetor

CFI

Continuous Fuel Injection

–

CKP

Crankshaft Position

Crank Angle

Closed Loop

CMP

Camshaft Position

Cam Angle

CPP

Clutch Pedal Position

–

CTOX

Continuous Trap Oxidizer

–

CTP

Closed Throttle Position

LL ON, Idle ON

DFI

Direct Fuel Injection (Diesel)

Direct Injection (DI)

Distributor Ignition

–

DLC1

DLC2

DLC3

Data Link Connector 1

Data Link Connector 2

Data Link Connector 3

1: Check Connector

2: Total Diagnosis Comunication Link (TDCL)

3: OBD II Diagnostic Connector

DTC

Diagnostic Trouble Code

Diagnostic Code

DTM

Diagnostic Test Mode

–

ECL

Engine Control Level

–

ECM

Engine Control Module

Engine ECU (Electronic Control Unit)

ECT

Engine Coolant Temperature

Coolant Temperature, Water Temperature (THW)

EEPROM

Electrically Erasable Programmable Read Only Memory

(EEPROM),

Erasable Programmable Read Only Memory (EPROM)

EFE

Early Fuel Evaporation

Cold Mixture Heater (CMH), Heat Control Valve (HCV)

EGR

Exhaust Gas Recirculation

Exhaust Gas Recirculation (EGR)

Electronic Ignition

TOYOTA Distributorless Ignition (TDI)

Engine Modification

Engine Modification (EM)

EPROM

Erasable Programmable Read Only Memory

Programmable Read Only Memory (PROM)

EVAP

Evaporative Emission

Evaporative Emission Control (EVAP)

Fan Control

–

FEEPROM

Flash Electrically Erasable Programmable Read Only

Memory

–

FEPROM

Flash Erasable Programmable Read Only Memory

–

Flexible Fuel

–

Fuel Pump

GEN

Generator

Alternator

GND

Ground

Ground (GND)

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