2000 LEXUS GS400 engine

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)

SF0NZ±03
B08977
VSV Connector
VSV
EVAP Hose
EVAP HoseEngine Cover
± SFI (2JZ±GE)VSV FOR EVAPORATIVE EMISSION (EVAP)
SF±51
1517 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
VSV FOR EVAPORATIVE EMISSION (EVAP)
COMPONENTS

SF0O0±04
B01604
Ohmmeter
Continuity
B01605
No ContinuityOhmmeter
B01606
Air
B01607
Air
Battery SF±52
± SFI (2JZ±GE)VSV FOR EVAPORATIVE EMISSION (EVAP)
1518 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. REMOVE ENGINE COVER
Remove the 4 nuts and engine cover.
2. REMOVE VSV
3. INSPECT VSV
(a) Inspect the VSV for open circuit.
Using an ohmmeter, check that there is continuity be-
tween the terminals.
Resistance: 27 ± 33 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.
(c) Inspect the VSV operation.
(1) Check that air does not flows from the ports.
(2) Apply battery positive voltage across the terminals.
(3) Check that air flows from the ports.
If operation is not specified, replace the VSV.
4. REINSTALL VSV
5. REINSTALL ENGINE COVER
Reinstall the engine cover with the 4 nuts.

SF0O1±02
B08976
Oil Dipstick and Guide for A/T
Engine Wire Clamp
VSV
Vacuum TankVacuum Control Valve SetVSV Connector
Vacuum Hose

O±Ring

Non±reusable part
Engine Cover
± SFI (2JZ±GE)VSV FOR ACOUSTIC CONTROL INDUCTION
SYSTEM (ACIS)SF±53
1519 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
VSV FOR ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
COMPONENTS

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.

P02689
Air
E
Filter
P02690
Air
E
F
Battery
± SFI (2JZ±GE)VSV FOR ACOUSTIC CONTROL INDUCTION
SYSTEM (ACIS)SF±55
1521 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(c) Inspect the VSV operation.
(1) Check that air flows from port E to the filter.
(2) Apply battery positive voltage across the terminals.
(3) Check that air flows from ports E to F.
6. REINSTALL VSV
(a) Install the VSV with the screw to the vacuum tank.
(b) Install the vacuum hose.
7. REINSTALL VACUUM CONTROL VALVE SET
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
8. REINSTALL OIL DIPSTICK AND GUIDE FOR A/T
HINT:
Using a new O±ring.
9. REINSTALL SEGINE COVER
Reinstall the engine cover with the 4 nuts.

SF0O5±01
B02006
Non±reusable partECT Sensor Connector
ECT Sensor
Gasket
SF±58
± SFI (2JZ±GE)ENGINE COOLANT TEMPERATURE (ECT) SENSOR
1524 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
ENGINE COOLANT TEMPERATURE (ECT) SENSOR
COMPONENTS

SF0O6±01
B01944
SST
Z02917
Ohmmeter
Acceptable
RESISTANCE KW
TEMPERATURE °C (°F)
± SFI (2JZ±GE)ENGINE COOLANT TEMPERATURE (ECT) SENSOR
SF±59
1525 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. DRAIN ENGINE COOLANT
2. REMOVE ECT SENSOR
(a) Disconnect the ECT sensor connector.
(b) Using SST, remove the ECT sensor and gasket.
SST 09205±76030
3. INSPECT ECT SENSOR
Using an ohmmeter, measure the resistance between the ter-
minals.
Resistance: Refer to the graph
If the resistance is not as specified, replace the ECT sensor.
4. REINSTALL ECT SENSOR
(a) Install a new gasket to the ECT sensor.
(b) Using SST, install the ECT sensor.
SST 09205±76030
Torque: 19.6 N´m (200 kgf´cm, 14 ft´lbf)
(c) Connect the ECT sensor connector.
5. REFILL WITH ENGINE COOLANT