Lexus GS300/400 (2000 year). Service 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.
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