Line pressure LEXUS GS400 2000 Service Owner's Manual

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

SS0C5±02
SS±42
± SERVICE SPECIFICATIONSAUTOMATIC TRANSMISSION
198 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
AUTOMATIC TRANSMISSION
SERVICE DATA
Line pressure (Wheel locked)
Idling
D position
R position
Stall
D position
R position
395 ± 455 kPa (4.0 ± 4.6 kgf´cm2, 57 ± 65 psi)
0
1,200 ± 1,360 kPa (12.2 ± 13.8 kgf´cm
2, 174 ± 196 psi)
1,655 ± 1,960 kPa (16.9 ± 19.8 kgf´cm2, 240 ± 282 psi)
Engine stall revolution (D position)
1UZ±FE
2JZ±GE
2,250 ± 150 rpm
2,700 ± 150 rpm
Time lag N " D position
N " R positionLess than 1.2 seconds
Less than 1.5 seconds
Engine idle speed (N position and A/C OFF)
1UZ±FE
2JZ±GE
750 ± 50 rpm
700 ± 50 rpm
Drive plate runoutMax.
Torque converter clutch sleeve runout Max.
Torque converter clutch installation (Correct distance) 1UZ±FE
2JZ±GE0.20 mm (0.0079 in.)
0.30 mm (0.0118 in.)
More than 17.1 mm (0.673 in.)
More than 0.1 mm (0.004 in.)
Extension housing oil seal drive in depth from flat end2.0 mm (0.079 in.)
Shift schedule (1UZ±FE / NORM and PWR mode)
Differential gear ratio 3.266
D, 4 position
(Throttle valve fully opened) 1 "2
2 " 3
3 " 4
4 " 5
5 " 4
4 " 3
3 " 2
2 " 1
(Throttle valve fully closed) 4 " 5
5 " 4
3 position
(Throttle valve fully opened) 1 " 2
2 " 3
4 " 3
3 " 2
2 " 1
2 position
(Throttle valve fully opened) 1 " 2
3 " 2
2 " 1
L position
(Throttle valve fully opened) 2 " 1
63 ± 73 km/h (39 ± 45 mph)
93 ± 105 km/h (58 ± 65 mph)
143 ± 161 km/h (89 ± 100 mph)
209 ± 230 km/h (130 ± 143 mph)
202 ± 218 km/h (126 ± 135 mph)
135 ± 148 km/h (84 ± 92 mph)
79 ± 87 km/h (49 ± 54 mph)
42 ± 49 km/h (26 ± 30 mph)
33 ± 39 km/h (21 ± 24 mph)
24 ± 30 km/h (15 ± 19 mph)
63 ± 73 km/h (39 ± 45 mph)
93 ± 105 km/h (58 ± 65 mph)
152 ± 167 km/h (94 ± 104 mph)
79 ± 87 km/h (49 ± 54 mph)
42 ± 49 km/h (26 ± 30 mph)
63 ± 73 km/h (39 ± 45 mph)
103 ± 111 km/h (64 ± 69 mph)
42 ± 49 km/h (26 ± 30 mph)
17 ± 23 km/h (11 ± 14 mph)

SS063±07
SS±56
± SERVICE SPECIFICATIONSBRAKE
212 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Brake line union nut1515511
Hydraulic brake booster clevis lock nut2526019
Hydraulic brake booster x Pedal bracket131309
Bleeder plug1111 08
Parking brake pedal assembly x Body131309
Front brake caliper installation bolt3435025
Front disc brake caliper x Flexible hose3031022
Front disc brake torque plate x Steering knuckle11 81,20087
Rear disc brake caliper x Flexible hose3031022
Rear disc brake caliper x Rear axle carrier1041,06577
Reservoir set screw1.717.515.2 in.´lbf
Oil pressure sensor x Hydraulic brake booster8183060
Accumulator x Booster pump motor5455036
Front speed sensor installation bolt8.08271 in.´lbf
Front speed sensor harness clamp bolt5.05144 in.´lbf
Rear speed sensor installation bolt8.08271 in.´lbf
Rear speed sensor harness x Body5.55649 in.´lbf
Rear speed sensor harness x Toe control arm5.05144 in.´lbf
Rear seatback x Body1818513

SS0F6±01
± SERVICE SPECIFICATIONSAIR CONDITIONING
SS±67
223 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Compressor x Discharge hose101007
Compressor x Suction hose101007
Compressor x Engine (GS300) Bolt5253038Com ressor x Engine (GS300) Bolt
Nut2626519
Compressor x Engine (GS400)4950036
PS pump x Engine (GS300)5859043
PS pump bracket x Engine (GS300)5253038
Compressor bracket x PS pump bracket5253038
Stay x Engine (GS400)2930022
Pressure plate x Compressor13.21359
A/C unit x Liquid and suction tube101007
Evaporator x Tube and accessory4.14236 in.´lbf
Expansion valve x Tube and accessory4.14236 in.´lbf
Condenser x Discharge hose101007
Condenser x Liquid tube101007
Pressure switch x Liquid tube101007
ECT switch x Radiator7.47565 in.´lbf
Suction line101007

B01875
Fuel
Pump
Connector
B01998
New
Gasket
New
Gasket
FI1654
SST
Fulcrum Length
30 cm
± SFI (2JZ±GE)SFI SYSTEM
SF±3
1469 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
8. FUEL SYSTEM
(a) When disconnecting the high pressure fuel line, a large
amount of gasoline will spill out, so observe these proce-
dures:
(1) Disconnect the fuel pump connector.
(2) Start the engine. After the engine has stopped on
its own, turn the ignition switch OFF.
(3) Put a container under the connection.
(4) Slowly loosen the connection.
(5) Disconnect the connection.
(6) Plug the connection with a rubber plug.
(7) Reconnect the fuel pump connector.
(b) When connecting the flare nut or union bolt on the high
pressure pipe union, observe these procedures:
(1) Union Bolt Type:
Always use a new gasket.
(2) Union Bolt Type:
Tighten the union bolt by hand.
(3) Union Bolt Type:
Tighten the union bolt to the specified torque.
Torque: 29 N´m (300 kgf´cm, 22 ft´lbf)
(4) Flare Nut Type:
Apply a light coat of engine oil to the flare and tight-
en the flare nut by hand.
(5) Flare Nut Type:
Using SST, tighten the flare nut to the specified
torque.
SST 09631±22020
NOTICE:
Do not rotate the fuel pipe, when tightening the flare nut.
Torque:
30 N´m (310 kgf´cm, 22 ft´lbf) for using SST
38 N´m (387 kgf´cm, 28 ft´lbf)
HINT:
Use a torque wrench with a fulcrum length of 30 cm (11.81 in.).

SF0N4±01
B01876
B01877
Pull
Remove
Plug
B01878
B01874
Fuel
Sub Suction
Hose
± SFI (2JZ±GE)FUEL PUMP
SF±11
1477 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
CAUTION:
Do not smoke or work near an open frame when working
the fuel pump.
1. REMOVE REAR SEAT CUSHION
2. REMOVE FLOOR SERVICE HOLE COVER
Remove the 3 cap nuts and service hole cover.
3. DISCONNECT FUEL PUMP & SENDER GAUGE CON-
NECTOR
4. DISCONNECT FUEL TANK MAIN TUBE (FUEL TUBE
CONNECTOR) FROM FUEL SECTION PLATE
CAUTION:

Perform disconnecting operation of the fuel tube con-
nector (quick type) after observing precaution. (See
page SF±1)

As there is retained pressure in the fuel line, prevent
it from splashing inside the vehicle compartment.
(a) Remove the tube joint clip.
(b) Pull out the fuel main tube.
(c) Plug the port of the fuel suction plate with a clean rubber
cap.
5. REMOVE FUEL PUMP AND SENDER GAUGE AS-
SEMBLY FROM FUEL TANK
(a) Remove the 8 bolts and fuel tank vent tube set plate.
(b) Lift up the fuel pump and sender gauge assembly, and
disconnect the fuel sub suction hose from the fuel return
jet tube and remove the fuel pump, sender gauge assem-
bly and gasket.
6. REMOVE NO.2 FUEL SUCTION SUPPORT
(See page SF±17)
7. REMOVE FUEL PRESSURE REGULATOR AND FUEL
RETURN JET TUBE ASSEMBLY (See page SF±17)

SF0N5±02
B02037
Push
B01892
Fuel Port Hole
No.1 Fuel Filter
Cushion
Fuel Port
New O±Ring
B01893
B02038
Snap Claw
Push
B01887
New Clip
± SFI (2JZ±GE)FUEL PUMP
SF±13
1479 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
1. INSTALL FUEL PUMP TO FUEL FILTER
Push in the fuel pump.
2. INSTALL FUEL FILTER AND FUEL PUMP ASSEMBLY
(a) Install the No.1 fuel filter cushion to the fuel suction plate.
(b) Apply a light coat of gasoline to a new O±ring and install
it to the fuel port of the fuel suction plate.
(c) Align the fuel port of the fuel suction plate with the fuel port
hole of the fuel filter.
(d) Push in the fuel filter.
(e) Connect the fuel pump connector.
3. INSTALL NO.1 FUEL SUCTION SUPPORT
(a) Install the No.2 fuel filter cushion to the fuel filter.
(b) Push the fuel suction support, and attach the 4 snap
claws to the claw holes.
4. INSTALL FUEL SUCTION FILTER
Install the suction filter with a new clip.
5. INSTALL FUEL PRESSURE REGULATOR AND FUEL
RETURN JET TUBE ASSEMBLY (See page SF±18)
6. INSTALL NO.2 FUEL SUCTION SUPPORT
(See page SF±18)

SF0N8±01
B02061
Connect
Push
B01885
B02039Push
Snap Claw
SF±18
± SFI (2JZ±GE)FUEL PRESSURE REGULATOR
1484 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
1. INSTALL FUEL PRESSURE REGULATOR AND FUEL
RETURN JET TUBE ASSEMBLY
(a) Apply a light coat of gasoline to a new O±ring, and install
it to the fuel pressure regulator.
(b) Push in the fuel pressure regulator to the fuel filter.
(c) Check that the fuel pressure regulator rotates smoothly.
If it does not rotates smoothly, the O±ring may be pinched, so
remove the fuel pressure regulator and perform again steps (b)
and (c) above.
(d) Connect the fuel return jet tube to the clamp of the No.2
fuel suction support.
2. INSTALL NO.2 FUEL SUCTION SUPPORT
(a) Install the rubber cushion to the fuel pump.
(b) Push the fuel suction support, and attach the 4 snap
claws to the claw holes.
3. INSTALL FUEL PUMP AND SENDER GAUGE AS-
SEMBLY TO FUEL TANK (See page SF±13)

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.

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.