Lexus GS300/400 (2000 year). Manual — part 125

–

COOLING (2JZ–GE)

WATER PUMP

CO–9

1547

6.

INSTALL RADIATOR ASSEMBLY
(See page

CO–23

)

EC00B–05

–

EMISSION CONTROL (2JZ–GE)

EMISSION CONTROL SYSTEM

EC–1

1452

EMISSION CONTROL SYSTEM

PURPOSE

The emission control systems are installed to reduce the amount of CO, HC and NOx exhausted from the
engine

(3) and (4)), to prevent the atmospheric release of blow–by gas–containing HC (1) and evaporated

fuel containing HC being released from the fuel tank (2).
The function of each system is shown in these table.

System

Abbreviation

Function

(1) Positive Crankcase Ventilation

(2) Evaporative Emission Control

(3) Three–Way Catalytic Converter

(4) Sequential Multiport Fuel Injection *

PCV

EVAP

TWC

SFI

Reduces blow–by gas (HC)

Reduces evaporated HC

Reduces CO, HC and NOx

Injects a precisely timed, optimum amount of fuel for reduced exhaust

emissions

Remark: * For inspection and repair of the SFI system, refer to the SF section this manual.

EC0DF–01

B01589

Air Cleaner, MAF Meter
and Intake Air Resonator
Assembly

PCV Hose

PS Air Hose

Air Cleaner Inlet

MAF Meter Connector

Heated Oxygen Sensor
(Bank 1 Sensor 1)

EVAP Hose

Gasket

Exhaust Manifold (with Front TWC)

Pipe Support Bracket

N·m (kgf·cm, ft·lbf)

Non–reusable part

Wire Grommet

Front Exhaust Pipe

: Specified torque

Heated Oxygen Sensor
(Bank 2 Sensor 1)

Heated Oxygen Sensor
(Bank 1 Sensor 2)

Gasket

40 (408, 30)

x 8

45 (450, 32)

44 (440, 32)

Engine Wire Clamp

Case Clamp

Clamp

44 (440, 32)

EC–12

–

EMISSION CONTROL (2JZ–GE)

THREE–WAY CATALYTIC CONVERTER (TWC)
SYSTEM

1463

THREE–WAY CATALYTIC CONVERTER (TWC) SYSTEM

COMPONENTS

B08609

N·m (kgf·cm, ft·lbf) : Specified torque

Non–reusable part

44 (440, 32)

Gasket

Gasket

Front Exhaust Pipe
(with Rear TWC)

44 (440, 32)

44 (440, 32)

Pipe Support Bracket

Floor Carpet

Under Cover

Heated Oxygen
Sensor Connector

TWC

–

EMISSION CONTROL (2JZ–GE)

THREE–WAY CATALYTIC CONVERTER (TWC)
SYSTEM

EC–13

1464