LEXUS GS400 2000 Service Repair Manual

B01585
A
± SFI (2JZ±GE)ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
SF±47
1513 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
5. REMOVE VSV FROM VACUUM TANK
(a) Disconnect the vacuum hose from port A of the vacuum
tank.
(b) Remove the screw and VSV.

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)

SF0NX±01
± SFI (2JZ±GE)ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
SF±49
1515 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
Installation is in the reverse order of removal. (See page SF±46)

B01374
EFI Main
Relay
SF0NY±01
A00968
Ohmmeter
No Continuity5 Ohmmeter
Continuity
32
1
A00969
5 Ohmmeter
Continuity32 1
Battery SF±50
± SFI (2JZ±GE)EFI MAIN RELAY
1516 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
EFI MAIN RELAY
INSPECTION
1. REMOVE RELAY BOX COVER
2. REMOVE EFI MAIN RELAY (Marking:EFI)
3. INSPECT EFI MAIN RELAY
(a) Inspect the relay continuity.
(1) Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
If there is no continuity, replace the relay.
(2) Check that there is no continuity between terminals
3 and 5.
If there is continuity, replace the relay.
(b) Inspect the relay operation.
(1) Apply battery positive voltage across terminals 1
and 2.
(2) Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
If there is no continuity, replace the relay.
4. REINSTALL EFI MAIN RELAY
5. REINSTALL RELAY BOX COVER

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.

SF0O3±03
A07218
Vacuum Hose
VSV Connector for Vapor Pressure Sensor
VSV for Vapor Pressure Sensor
Vacuum HoseVacuum Hose
Charcoal Canister Assembly
VSV
SF±56
± SFI (2JZ±GE)VSV FOR VAPOR PRESSURE SENSOR
1522 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
VSV FOR VAPOR PRESSURE SENSOR
COMPONENTS