Lexus SC300 / Lexus SC400. Manual - part 504

RECOMMENDED TOOLS

Illustration

Part No.

Part Name

Note

09082–00015

TOYOTA
Electrical Tester

09200–00010

Engine Adjust
Kit

09258–00030

Hose Plug Set

Plug for the vacuum hose, fuel hose, etc.

EQUIPMENT

Part Name

Note

Graduted cylinder

Injector

Tachometer

Torque wrench

Soft brush

Carburetor cleaner

Throttle body

Stethoscope

Injector

Vacuum gauge

EQUIPMENT

Part Name

Note

Graduted cylinder

Injector

Tachometer
Torque wrench
Soft brush
Carburetor cleaner

Throttle body

Stethoscope

Injector

Vacuum gauge

FI–10

–

EFI SYSTEM

Preparation

Preparation

SST (SPECIAL SERVICE TOOLS)

Illustration

Part No.

Part Name

Note

09268–41045

Injection Measuring
Tool Set

(90268–41070)

No. 4 Union

Injector

(09268–41080)

No. 6 Union

Cold start Injector

(09268–52010)

Injection Measuring
Attachment

Injector

09268–45012

EFI Fuel Pressure
Gauge

09612–24014

Steering Gear
Housing Overhaul
Tool Set

(09617–24011)

Steering Rack Wrench

Fuel pressure pulsation damper

09631–22020

Power Steering
Hose Nut  14 X 17 mm
Wrench Set

Fuel line flare nut

09816–30010

Oil Pressure
Switch Socket

Knock sensor

09842–30055

Wire “G”
EFI Inspection

Cold start Injector

09842–30070

Wire “F”
EFI Inspection

Injector

09843–18020

Diagnosis Check
Wire

0990–01000

Engine Control 
Computer
Check Harness “A”

FI–10

           –   Preparation

EFI SYSTEM

RECOMMENDED TOOLS

Illustration

Part No.

Part Name

Note

09082–0015

TOYOTA
Electrical Tester

09200–00010

Engine Adjust
Kit

09258–00030

Hose Plug Set

Plug for the Vacuum hose, fuel hose ect.

EQUIPMENT

Part Name

Note

Graduated cylinder

Injector

Tachometer

Torque wrench

SSM (SERVICE SPECIAL MATERIALS)

Part Name

Part No.

Use etc.

Seal packing 1282B,

08826–00100

Water inlet housing

Three bond 1282B or equivalent

FI–11

EFI SYSTEM   –   Preparation

PRECAUTIONS

1. 

Before working on the fuel system, disconnect the cable
from negative (–) terminal of the battery.
HINT: Any diagnostic code retained by the computer will be
erased when the battery terminal is removed. Therefore, if
necessary, read the diagnosis before removing the battery
terminal.
CAUTION: Turn the ignition switch to ”LOCK”. Discon-
nect the cable from the negative (–) terminal of the bat-
tery. Wait at least 20 seconds before proceeding with
work.

2. 

Do not smoke or work on open flame when working on
the fuel system.

3. 

Keep gasoline away from rubber or leather parts.

INSPECTION PRECAUTIONS

MAINTENANCE PRECAUTIONS

1. 

CHECK CORRECT ENGINE TUNE–UP
(See page 

EM–8

)

2. 

PRECAUTIONS WHEN CONNECTING GAUGE
(a)  Use the battery as the power source for the timing light,

tachometer, etc.

(b)  Connect the test probe of a tachometer to the terminal

IG 

 of the check connector.

3.  IN EVENT OF ENGINE MISFIRE, FOLLOWING

PRECAUTIONS SHOULD BE TAKEN
(a)  Check proper connection of battery terminals, etc.
(b)  Handle high–tension cords carefully.
(c)  After repair work, check that the ignition coil terminals

and all other ignition system lines are reconnected
securely.

(d)  When cleaning the engine compartment, be especially

careful to protect the electrical system from water.

4. 

PRECAUTIONS WHEN HANDLING OXYGEN SENSOR
(a)  Do not allow oxygen sensor to drop or hit against an

object.

(b)  Do not allow the sensor to come into contact with water.

–

EFI SYSTEM

Precautions, Inspection Precautions

FI–11