2000 LEXUS GS400 Service Repair Manual

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

SF0O4±01
B01273
Ohmmeter
Continuity
B00798
Ohmmeter
No Continuity
B00799
Air
E
G
B00800
BatteryAir
F
E
± SFI (2JZ±GE)VSV FOR VAPOR PRESSURE SENSOR
SF±57
1523 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. DISCONNECT CHARCOAL CANISTER ASSEMBLY
FROM BODY
Remove the 3 nuts, and disconnect the charcoal canister from
the body.
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: 33 ± 39 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 flows from ports E to G.
(2) Apply battery positive voltage across the terminals.
(3) Check that air flows from ports E to F.
If operation is not as specified, replace the VSV.
4. REINSTALL VSV
5. REINSTALL CHARCOAL CANISTER ASSEMBLY

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

B01982
LEXUS
Hand±Held
TesterSF0N2±05
B09511
Up
Screw
Pulsation Damper
B01958
Fuel Inlet Hose
A02818
SST
SST
(Union)
SST
(Adapter)
SF±6
± SFI (2JZ±GE)FUEL PUMP
1472 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
FUEL PUMP
ON±VEHICLE INSPECTION
1. CHECK FUEL PUMP OPERATION
(a) Connect a LEXUS hand±held tester to the DLC3.
(b) Turn the ignition switch ON and LEXUS hand±held tester
main switch ON.
NOTICE:
Do not start the engine.
(c) Select the ACTIVE TEST mode on the LEXUS hand±held
tester.
(d) Please refer to the LEXUS hand±held tester operator's
manual for further details.
(e) If you have no LEXUS hand±held tester, connect the pos-
itive (+) and negative (±) leads from the battery to the fuel
pump connector. (See step 3)
(f) Check that the pulsation damper screw rises up when the
fuel pump operates.
If there is no pressure, check the fusible link, fuses, EFI main
relay, fuel pump ECU, fuel pump, ECM and wiring connections.
(g) Turn the ignition switch OFF.
(h) Disconnect the LEXUS hand±held tester from the DLC3.
2. CHECK FUEL PRESSURE
(a) Check the battery positive voltage is above 12 V.
(b) Disconnect the negative (±) terminal cable from the bat-
tery.
(c) Remove the union bolt and 2 gaskets, and disconnect the
fuel inlet hose from the fuel pipe support.
NOTICE:

Put a shop towel under the fuel pipe support.

Slowly loosen the union bolt.
(d) Install the fuel inlet hose and SST (pressure gauge) to the
fuel pipe support with the 3 gaskets and SST (union and
adapter).
SST 09268±45014 (09268±41190, 90405±06167)
Torque: 29 N´m (300 kgf´cm, 21 ft´lbf)
(e) Wipe off any splattered gasoline.