2000 LEXUS GS400 Throttle position sensor

SS0FL±05
SS±12
±
168 Author: Date:
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Fuel line for union bolt
for flare nut (for using SST)29
38 (30)300
387 (310)22
28 (22)
Fuel tank vent tube set plate x Fuel tank3.53631 in.´lbf
Fuel inlet hose x Body9.09080 in.´lbf
Delivery pipe x Intake manifold2121015
Fuel pressure pulsation damper x Fuel pipe support32.532524
Fuel inlet pipe x Intake manifold9.09080 in.´lbf
No.2 vacuum pipe x Intake manifold2121015
Fuel sender gauge x Fuel tank1.51513 in.´lbf
Fuel tank band x Body3940031
MAF meter x Air cleaner10.71098
Throttle body bracket x Throttle body2121015
Throttle body bracket x Cylinder head2121015
Throttle position sensor x Throttle body1.717.515 in.´lbf
Throttle control motor x Throttle body3.737.533 in.´lbf
Throttle control motor cover x Throttle body1.717.515 in.´lbf
Accelerator pedal position sensor x Throttle body3.737.533 in.´lbf
Camshaft timing oil control valve x No.3 camshaft bearing cap8.08071 in.´lbf
No.3 timing belt cover x Cylinder head cover8.08071 in.´lbf
Intake air connector x Air intake chamber2828021
Air intake chamber x Intake manifold2828021
Vacuum control valve set x Intake manifold2121015
ECT sensor x Cylinder head19.620014
Knock sensor x Cylinder block4445033
PS pump rear stay x Manifold stay39.240029
PS pump rear stay x PS pump bracket39.240029
Heated oxygen sensor x Exhaust manifold4545033
Heated oxygen sensor x Front exhaust pipe4545033

SS0FP±01
SS±18
±
174 Author: Date:
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Spark plug x Cylinder head1818013
Throttle body x Intake air connector2121015
Throttle body bracket x Cylinder head2121015
Throttle body bracket x Throttle body2121015
Throttle body gasket x Intake air connector2121015
Ignition coils and high±tension cord set assembly x Cylinder head8.08071 in.´lbf
PS pump rear stay x Manifold stay39.240029
PS pump rear stay x PS pump bracket39.240029
Camshaft position sensor x Cylinder head9.09080 in.´lbf
Crankshaft position sensor x Oil pump9.09080 in.´lbf

SF151±01
B08999
N´m (kgf´cm, ft´lbf) : Specified torque

Non±reusable part
21 (210, 15)
21 (210, 15)
VSV Connector for EVAP
Camshaft Position Sensor Connector
No.2 Vacuum Pipe
Accelerator Cable
EVAP Hose
Noise Filter
Connector
Vacuum
Hose
Throttle Position
Sensor Connector

Gasket
PS Air Hose
Engine Wire Clamp

Gasket
Oil Dipstick and
Guide for A/T
Engine Wire
Clamp
42 (420, 31)
Fuel Pressure Pulsation Damper

Gasket

O±Ring
Fuel Inlet Pipe Delivery Pipe
21 (210, 15)
Spacer
Injector Connector
O±Ring
O±Ring
Injector

Insulator

Grommet
28 (280, 21)
Engine Cover
SF±20
± SFI (2JZ±GE)INJECTOR
1486 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
COMPONENTS

SF0NB±04
B01579
± SFI (2JZ±GE)INJECTOR
SF±21
1487 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE ENGINE COVER
Remove the 4 nuts and engine cover.
2. REMOVE AIR INTAKE CHAMBER (See page SF±46)
3. REMOVE FUEL PRESSURE PULSATION DAMPER
(See page SF±26)
4. REMOVE DELIVERY PIPE AND INJECTORS
NOTICE:

Be careful not to drop the injectors when removing
the delivery pipe.

Pay attention to put any hung load on the injector to
and from the side direction.
(a) Disconnect the 6 injector connectors.
(b) Disconnect the camshaft position sensor connector.
(c) Disconnect the throttle position sensor connector.
(d) Disconnect the VSV connector for EVAP.
(e) Remove the 3 bolts and delivery pipe together with the 6
injectors.
(f) Pull out the 6 injectors from the delivery pipe.
(g) Remove the O±rings, grommet and insulator from each
injector.
(h) Remove the 3 spacers from the intake manifold.

SF0ND±04
B01220
New Insulator
New O±Ring
New Grommet New O±Ring
B01571
Turn
Outward
Connector
B01580
RotateUpward SF±24
± SFI (2JZ±GE)INJECTOR
1490 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
1. INSTALL INJECTORS AND DELIVERY PIPE
(a) Install new insulator and grommet to each injector.
(b) Apply a light coat of spindle oil or gasoline to 2 new O±
rings and install them to each injector.
(c) Apply a light coat of spindle oil or gasoline on the place
where a delivery pipe touches an O±ring of the injector.
(d) While turning the injector clockwise and counterclock-
wise, push it to the delivery pipe. Install the 6 injectors.
(e) Position the injector connector outward.
(f) Place the 3 spacers in position on the intake manifold.
(g) Apply a light coat of spindle oil or gasoline on the place
where a intake manifold touches an O±ring of the injector.
(h) Place the 6 injectors together with the delivery pipe and
3 bolts in position on the intake manifold.
(i) Temporarily install the 3 bolts holding the delivery pipe to
the intake manifold.
(j) Check that the injectors rotate smoothly.
HINT:
If injectors do not rotate smoothly, the probable cause is incor-
rect installation of O±rings. Replace the O±rings.
(k) Position the injector connector upward.
(l) Connect the 6 injector connectors.
HINT:
The Nos.1, 3, 5 injector connectors and dark gray, and the
Nos.2, 4, 6 injector connectors are brown.
(m) Tighten the 3 bolts holding the delivery pipe to the intake
manifold.
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
(n) Connect the camshaft position sensor connector.
(o) Connect the throttle position sensor connector.
(p) Connect the VSV connector for EVAP.
2. INSTALL FUEL PRESSURE PULSATION DAMPER
(See page SF±27)
3. INSTALL AIR INTAKE CHAMBER
(See page SF±49)
4. INSTALL ENGINE COVER
Install the engine cover with the 4 nuts.

SF0NL±05
B09506
B01608
B01982
LEXUS
Hand±Held
Tester SF±32
± SFI (2JZ±GE)THROTTLE BODY
1498 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
THROTTLE BODY
ON±VEHICLE INSPECTION
1. REMOVE ENGINE COVER
Remove the 4 nuts and engine cover.
2. INSPECT SYSTEM OPERATION
(a) Check that the throttle linkage moves smoothly.
(b) Inspect the throttle control motor for operating sound.
(1) Turn the ignition switch ON.
(2) When turning the accelerator pedal position sensor
lever, check the running sound of the motor. Also,
check that there is no friction sound.
If operation is not as specified, check the throttle control motor,
wiring and ECM.
(c) Inspect the throttle position sensor and accelerator pedal
position sensor function.
(1) Connect the LEXUS hand±held tester to the DLC3.
(2) When turning the accelerator pedal position sensor
lever to the full±open position, check that the
throttle valve opening percentage (THROTTLE
POS) of the CURRENT DATA showns the standard
value.
Throttle valve opening percentage: 60 % or more
If operation is not as specified, check that the throttle position
sensor, accelerator pedal position sensor, wiring and ECM.
(d) Start the engine, and check that the Malfunction Indicator
Lamp (MIL) does not light up.
(e) Inspect the air assist system.
(1) Allow the engine to warm up to normal operating
temperature.

B09507
B01620
Ohmmeter3 (CL±)
4 (CL+)
1 (M+)
2 (M±)
B01942VCOhmmeter
E2
B01943
VC Ohmmeter
E2
± SFI (2JZ±GE)THROTTLE BODY
SF±33
1499 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(2) Turn the A/C switch ON and OFF, and check the idle
speed.
Idle speed (Transmission in neutral):
700 ± 50 rpm (A/C OFF)
750 ± 50 rpm (A/C ON)
NOTICE:
Perform inspection under condition without electrical load.
(3) With engine idling, pinch the air assist hose and
check that engine speed drops, and then returns
back up to idle speed.
If operation is not as specified, check the throttle body, wiring
and ECM.
(f) After checking the above (b) to (e), perform the diving test
and check that there is no sense of incongruity.
3. INSPECT THROTTLE CONTROL MOTOR
(a) Disconnect the throttle control motor connector.
(b) Using an ohmmeter, measure the resistance between ter-
minal 3 (CL±) and 4 (CL+).
Resistance: 4.2 ± 5.2 W at 20°C (68°F)
(c) Using an ohmmeter, measure the resistance between ter-
minal 1 (M+) and 2 (M±).
Resistance: 0.3 ± 100 W at 20°C (68°F)
If the resistance is not as specified, replace the throttle control
motor. (See page SF±37)
(d) Reconnect the throttle control motor connector.
4. INSPECT THROTTLE POSITION SENSOR
(a) Disconnect the throttle position sensor connector.
(b) Using an ohmmeter, measure the resistance between ter-
minals VC and E2.
Resistance: 1.2 ± 3.2 kW at 20°C (68°F)
If the resistance is not as specified, replace the throttle position
sensor. (See page SF±37)
(c) Reconnect the throttle position sensor connector.
5. INSPECT ACCELERATOR PEDAL POSITION SEN-
SOR
(a) Disconnect the accelerator pedal position sensor con-
nector.
(b) Using an ohmmeter, measure the resistance between ter-
minals VC and E2.
Resistance: 1.2 ± 3.2 kW at 20°C (68°F)
If the resistance is not as specified, replace the accelerator ped-
al position sensor. (See page SF±37)

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.