Lexus GS300/400 (2000 year). Manual - part 127

EC04X–05

B02023

PCV Valve

P02006

Cylinder Head Side

Clean Hose

P02477

Intake Air
Connector Side

B02817

Side
Line

55

°

EC–4

–

EMISSION CONTROL (2JZ–GE)

POSITIVE CRANKCASE VENTILATION (PCV) 
SYSTEM

1455

POSITIVE CRANKCASE
VENTILATION (PCV) SYSTEM

INSPECTION

1.

REMOVE ENGINE COVER

Remove 4 nuts and engine cover.

2.

REMOVE PCV VALVE

(a)

Disconnect the PCV hose from the PCV valve.

(b)

Remove the PCV valve.

3.

INSTALL CLEAN HOSE TO PCV VALVE

4.

INSPECT PCV VALVE OPERATION

(a)

Blow air into the cylinder head side, and check that air
passes through easily.

CAUTION:

Do not suck air through the valve.

Petroleum substances inside the valve are harmful.

(b)

Blow air into the intake air connector side, and check that
air passes through with difficulty.

If operation is not as specified, replace the PCV valve.

5.

REMOVE CLEAN HOSE FROM PCV VALVE

6.

REINSTALL PCV VALVE

The port faces in the direction indicated in the illustration.

S00601

–

EMISSION CONTROL (2JZ–GE)

POSITIVE CRANKCASE VENTILATION (PCV) 
SYSTEM

EC–5

1456

7.

VISUALLY INSPECT HOSES, CONNECTIONS
AND GASKETS

Check for cracks, leaks or damage.
8.

REINSTALL ENGINE COVER

Install the engine cover with the 4 nuts.

EC053–05

B06731

RH Rear Drive Shaft

Rear Suspension
Member Brace

Charcoal Canister Assembly

Vapor Pressure
Sensor Connector

EVAP Hose

VSV Connector
for Vapor Pressure
Sensor

Air Inlet Hose

83 (850, 61)

50 (510, 37)

Purge Hose

N·m (kgf·cm, ft·lbf)

: Specified torque

Air Drain Hose

Vent Line Hose

Canister Tank

EC–6

–

EMISSION CONTROL (2JZ–GE)

EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM

1457

EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM

COMPONENTS

EC0BD–02

B02709

Gasket

Vacuum
Valve

Pressure
Valve

B06544

Vacuum
Gauge

B01982

LEXUS Hand–Held Tester

DLC 3

B06548

Battery

–

EMISSION CONTROL (2JZ–GE)

EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM

EC–7

1458

INSPECTION

1.

INSPECT LINES AND CONNECTORS

Visually check for loose connections, sharp bends or damage.
2.

INSPECT FUEL TANK FILLER PIPE

Visually check for deformation, cracks or fuel leakage.

3.

VISUALLY INSPECT FUEL TANK CAP

Check if the cap and/or gasket are deformed or damaged.
If necessary, repair or replace the cap.

4.

INSPECT EVAP SYSTEM LINE

(a)

Warm up the engine and stop the engine.
Allow the engine to warm up to normal operating tempera-
ture.

(b)

Install a vacuum gauge (EVAP control system test equip-
ment vacuum gauge) to the EVAP service port on the
purge line.

(c)

LEXUS Hand–Held Tester:
Forced driving of the VSV for the EVAP.
(1)

Connect a LEXUS hand–held tester to the DLC3.

(2)

Start the engine.

(3)

Push the LEXUS hand–held tester main switch ON.

(4)

Use the ACTIVE TEST mode on the LEXUS hand–
held tester to operate the VSV for the EVAP.

(d)

If you have no LEXUS Hand–Held Tester:
Forced driving of the VSV for the EVAP.
(1)

Disconnect the VSV connector for the EVAP.

(2)

Connect the positive (+) and negative (–) leads from
the battery to the VSV terminals for the EVAP.

(3)

Start the engine.