intake LEXUS GS400 2000 Service Manual PDF

SF0NT±03
B01583
ActuatorVacuum Gauge
VSV
P10710
No Vacuum
Vacuum Gauge
P10844
Approx.
33.3 kPa
Pull
Actuator
Rod Vacuum Gauge SF±44
± SFI (2JZ±GE)ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
1510 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
ACOUSTIC CONTROL INDUCTION
SYSTEM (ACIS)
ON±VEHICLE INSPECTION
1. REMOVE ENGINE COVER
Remove the 4 nuts and engine cover.
2. CONNECT VACUUM GAUGE
Using a 3±way connector, connect vacuum gauge to the hose
between the actuator and VSV.
3. START ENGINE
4. INSPECT INTAKE AIR CONTROL VALVE
(a) While the engine is idling, check that the vacuum gauge
needle does not move.
(b) Rapidly depress the accelerator pedal to fully open posi-
tion and check that the vacuum gauge needle momentari-
ly fluctuates approx. 33.3 kPa (250 mmHg, 9.84 in.Hg) or
more. (The actuator rod is pulled down.)
5. REMOVE VACUUM GAUGE
Remove the vacuum gauge, and reconnect the vacuum hoses
to their proper locations.
6. REINSTALL ENGINE COVER
Reinstall the engine cover with the 4 nuts.

SF0NU±02
B08998
N´m (kgf´cm, ft´lbf) : Specified torque

Non±reusable part
21 (210, 15)
21 (210, 15)
Accelerator Cable Clamp EVAP Hose
Clamp Air Intake Chamber
(with Intake Air Control Valve)
Vacuum Hose (from
No.2 Vacuum Pipe)
Vacuum Hose

Gasket
Bracket and Noise Filter
PS Air Hose
Noise Filter
Connector
Engine Wire Clamp
Gasket
VSVVacuum Control Valve Set
Engine Wire Clamp
Vacuum Tank
Vacuum Hose
VSV Connector
Oil Dipstick and Guide for A/T
O±Ring
28 (280, 21)
Engine Cover
± SFI (2JZ±GE)ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
SF±45
1511 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
COMPONENTS

SF0NV±03
B01629
B01631
(f)
(g)(e)
B09508
B09509
SF±46
± SFI (2JZ±GE)ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
1512 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE ENGINE COVER
Remove the engine cover and 4 nuts.
2. REMOVE OIL DIPSTICK AND GUIDE FOR A/T
(See page EM±62)
3. REMOVE AIR INTAKE CHAMBER (WITH INTAKE AIR
CONTROL VALVE)
(a) Disconnect the noise filter connector.
(b) Disconnect the engine wire clamp from the bracket.
(c) Remove the bolt, bracket and noise filter.
(d) Remove the 4 bolts and 2 nuts holding the intake air con-
nector to the air intake chamber,
Torque: 28 N´m (280 kgf´cm, 21 ft´lbf)
(e) Disconnect the PS air hose from the air intake chamber.
(f) Disconnect the vacuum hose (from No.2 vacuum pipe)
from the air intake chamber.
(g) Disconnect the vacuum hose (from actuator for ACIS)
from the No.1 vacuum pipe.
(h) Disconnect the accelerator cable, and remove the bolt
and accelerator cable clamp.
(i) Disconnect the EVAP hose, and remove the bolt and
clamp.
(j) Remove the 5 bolts, 2 nuts, air intake chamber and 2 gas-
kets.
Torque: 28 N´m (280 kgf´cm, 21 ft´lbf)
4. REMOVE VACUUM CONTROL VALVE SET
(See page SF±54)

SF0NW±01
P10938
Close
Vacuum
P11994
Adjusting Screw
Vacuum
B01586
ABAB
AirAir
B01587
Vacuum AB
SF±48
± SFI (2JZ±GE)ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
1514 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. INSPECT INTAKE AIR CONTROL VALVE
(a) With 53.3 kPa (400 mmHg, 15.75 in.Hg) of vacuum ap-
plied to the actuator, check that the actuator rod moves.
If operation is not as specified, turn the adjusting screw.
(b) 1 minute after applying the vacuum in (a), check that the
actuator rod does not return.
2. INSPECT VACUUM TANK
(a) Check that air flows from ports A to B.
(b) Check that air does not flow ports B to A.
(c) Plug port B with your finger, and apply 53.3 kPa (400
mmHg, 15.75 in.Hg) of vacuum to port A, and check that
there is no change in vacuum after 1 minute.
If operation is not as specified, replace the vacuum tank.
3. INSPECT VSV (See page SF±54)

SF0O2±04
B01664
B01588
VSV Connect
Vacuum Hose
P02688
Ohmmeter
Continuity
P02687
Ohmmeter
No Continuity SF±54
± SFI (2JZ±GE)VSV FOR ACOUSTIC CONTROL INDUCTION
SYSTEM (ACIS)
1520 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. REMOVE ENGINE COVER
Remove the 4 nuts and engine cover.
2. REMOVE OIL DIPSTICK AND GUIDE FOR A/T
(See page EM±62)
3. REMOVE VACUUM CONTROL VALVE SET
(a) Remove the 2 nuts, and disconnect the vacuum tank from
the intake manifold.
(b) Disconnect VSV connector and vacuum hoses, and re-
move the vacuum control valve set.
4. REMOVE VSV
Remove the screw, vacuum hose and VSV.
5. INSPECT VSV
(a) Inspect the VSV for open circuit.
Using an ohmmeter, check that there is continuity be-
tween the terminals.
Resistance: 38.5 ± 44.5 W at 20°C (68°F)
If there is no continuity, replace the VSV.
(b) Inspect the VSV for ground.
Using an ohmmeter, check that there is no continuity be-
tween each terminal and the body.
If there is continuity, replace the VSV.

B08327
Bank 2 Sensor 1
N´m (kgf´cm, ft´lbf) : Specified torquePCV Hose
PS Air Hose
Air Cleaner Inlet
Wire Grommet EVAP Hose
Heated Oxygen Sensor
(Bank 2 Sensor 1)

Gasket Air Cleaner,
MAF Meter and
Intake Air Resonator
Assembly
MAF Meter Connector
Front Exhaust
Pipe

Gasket Engine Wire Clamp
Heated Oxygen Sensor
Connector
Case Clamp

Clamp
Pipe Support Bracket
Heated Oxygen Sensor Connector

Non±reusable part
44 (440, 32)
40 (408, 30)
44 (440, 32)
Exhaust Manifold
x 8
Engine Cover
± SFI (2JZ±GE)HEATED OXYGEN SENSOR
SF±65
1531 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)