engine LEXUS GS400 2000 Service Repair Manual

SF±34
± SFI (2JZ±GE)THROTTLE BODY
1500 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(c) Reconnect the accelerator pedal position sensor connec-
tor.
6. REINSTALL ENGINE COVER
Reinstall the engine cover with the 4 nuts.

SF0NM±07
B09000
Intake Air Resonator
PCV Hose
PS Air Hose
Throttle Control
Motor ConnectorThrottle Body Bracket
Throttle Position Sensor Connector
Water Bypass HoseWater Bypass Hose Engine Wire ClampAccelerator Pedal Position
Sensor Connector
Accelerator Cable
21 (210, 15)
N´m (kgf´cm, ft´lbf) : Specified torqueThrottle Body
Engine Cover
B01947
CoverAccelerator Pedal Position Sensor
Washer Plate
Throttle Control Motor
Throttle Position Sensor Bracket
x 5
± SFI (2JZ±GE)THROTTLE BODY
SF±35
1501 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
COMPONENTS

SF0NN±05
B01615
B01616
Forward
Down±Side
Diagonal(2) (1)
SF±36
± SFI (2JZ±GE)THROTTLE BODY
1502 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. DRAIN ENGINE COOLANT
2. REMOVE ENGINE COVER
Remove the 4 nuts and engine cover.
3. REMOVE INTAKE AIR RESONATOR
4. REMOVE THROTTLE BODY BRACKET AND
THROTTLE BODY
(a) Disconnect the accelerator cable.
(b) Disconnect the throttle position sensor connector.
(c) Disconnect the throttle control motor connector.
(d) Disconnect the accelerator pedal position sensor con-
nector.
(e) Disconnect the engine wire clamp from the clamp bracket
of throttle body.
(f) Remove the 2 bolts and nut holding the throttle body to
the intake air connector.
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
(g) Remove the 4 nuts and throttle body bracket.
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
(h) Slightly slide the throttle body away from the intake air
connector.
NOTICE:
When putting up the throttle body, do not hold the motor
part.
(i) Disconnect the 2 water bypass hoses from the throttle
body, and remove the throttle body.
HINT:

At the time of installation, please refer to the following
items.

Connect the water bypass hose with its discrimination
mark downward.

Install the with its craw direction for (1) forward and down±
side diagonal (engine side about 45°) for (2).

A02640
Ohmmeter
SF0NR±03
± SFI (2JZ±GE)CAMSHAFT TIMING OIL CONTROL VALVE
SF±41
1507 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
CAMSHAFT TIMING OIL CONTROL
VA LV E
ON±VEHICLE INSPECTION
1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE
RESISTANCE
(a) Disconnect the oil control valve connector.
(b) Using an ohmmeter, measure the resistance between the
terminals.
Resistance: 5.5 ± 12 W at 20°C (68°F)
If the resistance is not as specified, replace the valve.
(c) Reconnect the oil control valve connector.
2. INSPECT VVT±i OPERATION
(a) Allow the engine to warm up to normal operating tempera-
ture.
(b) Check that the engine stalls or becomes in rough±idling
state when the battery positive voltage is applied to the oil
control valve with the engine idling.
If operation is not as specified, check the oil control valve (see
page SF±43), VVT±i pulley, intake camshaft, wiring and ECM.

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)

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