2000 LEXUS GS400 fuel pump

IN0D6±01
± INTRODUCTIONTERMS
IN±41
41 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
GLOSSARY OF SAE AND LEXUS TERMS
This glossary lists all SAE±J1930 terms and abbreviations used in this manual in compliance with SAE rec-
ommendations, as well as their LEXUS equivalents.
SAE
ABBREVIATIONSSAE TERMSLEXUS TERMS
( )±±ABBREVIATIONS
A/CAir ConditioningAir Conditioner
ACLAir CleanerAir Cleaner, A/CL
AIRSecondary Air InjectionAir Injection (AI)
APAccelerator Pedal±
B+Battery Positive Voltage+B, Battery Voltage
BAROBarometric PressureHAC
CACCharge Air CoolerIntercooler
CARBCarburetorCarburetor
CFIContinuous Fuel Injection±
CKPCrankshaft PositionCrank Angle
CLClosed LoopClosed Loop
CMPCamshaft PositionCam Angle
CPPClutch Pedal Position±
CTOXContinuous Trap Oxidizer±
CTPClosed Throttle PositionLL ON, Idle ON
DFIDirect Fuel Injection (Diesel)Direct Injection (DI)
DIDistributor Ignition±
DLC1
DLC2
DLC3Data Link Connector 1
Data Link Connector 2
Data Link Connector 31: Check Connector
2: Total Diagnosis Comunication Link (TDCL)
3: OBD II Diagnostic Connector
DTCDiagnostic Trouble CodeDiagnostic Code
DTMDiagnostic Test Mode±
ECLEngine Control Level±
ECMEngine Control ModuleEngine ECU (Electronic Control Unit)
ECTEngine Coolant TemperatureCoolant Temperature, Water Temperature (THW)
EEPROMElectrically Erasable Programmable Read Only Memory
Electrically Erasable Programmable Read Only Memory
(EEPROM),
Erasable Programmable Read Only Memory (EPROM)
EFEEarly Fuel EvaporationCold Mixture Heater (CMH), Heat Control Valve (HCV)
EGRExhaust Gas RecirculationExhaust Gas Recirculation (EGR)
EIElectronic IgnitionTOYOTA Distributorless Ignition (TDI)
EMEngine ModificationEngine Modification (EM)
EPROMErasable Programmable Read Only MemoryProgrammable Read Only Memory (PROM)
EVAPEvaporative EmissionEvaporative Emission Control (EVAP)
FCFan Control±
FEEPROMFlash Electrically Erasable Programmable Read Only
Memory±
FEPROMFlash Erasable Programmable Read Only Memory±
FFFlexible Fuel±
FPFuel PumpFuel Pump
GENGeneratorAlternator
GNDGroundGround (GND)

SS0FK±01
±
SS±11
167 Author: Date:
SFI (2JZ±GE)
SERVICE DATA
Fuel pressure
regulatorFuel pressure301 ± 347 kPa (3.1 ± 3.5 kgf/cm2, 44 ± 50 psi)
Fuel pumpResistance at 20°C (68°F)0.2 ± 3.0 W
InjectorResistance at 20°C (68°F)
Injection volume
Difference between each cylinder
Fuel leakage13.4 ± 14.2 W
60 ± 73 cm3 (3.7 ± 4.5 cu in.) per 15 sec.
13 cm3 (0.8 cu in.) or less
1 drop or less per 12 minutes
MAF meterResistance (THA ± E2) at ±20°C (±4°F)
at 20°C (68°F)
at 60°C (140°F)13.6 ± 18.4kW
2.21 ± 2.69 kW
0.493 ± 0.667 kW
Throttle bodyThrottle body fully closed angle3.5°
Throttle control
motorMotor (M+ ± M±) at 20°C (68°F)
Clutch (CL+ ± CL±) at 20°C (68°F)0.3 ± 100 W
4.2 ± 5.2 W
Throttle position
sensorResistance (VC ± E2) at 20°C (68°F)
Throttle valve opening percentage STD1.2 ± 3.2 kW
15.6 ± 1.2 %
Accelerator pedal
position sensorResistance (VC ± E2) at 20°C (68°F)
Accelerator pedal position voltage STD1.2 ± 3.2 kW
0.3 ± 0.9 V
Camshaft timing
oil control valveResistance at 20°C (68°F)5.5 ± 12 W
VSV for EVAPResistance at 20°C (68°F)33 ± 39 W
VSV for acoustic
control induction
system (ACIS)Resistance at 20°C (68°F)38.5 ± 44.5 W
VSV for vapor
pressure sensorResistance at 20°C (68°F)33 ± 39 W
ECT sensorResistance at ±20°C (±4°F)
0°C (32°F)
20°C (68°F)
40°C (104°F)
60°C (140°F)
80°C (176°F)10 ± 20 kW
4 ± 7 kW
2 ± 3 kW
0.9 ± 1.3 kW
0.4 ± 0.7 kW
0.2 ± 0.4 kW
Vapor pressure
sensorPower sorce voltage4.5 ± 5.5 V
Heated oxygen
sensorHeater coil resistance at 20°C (68°F)11 ± 16 W
Fuel cut rpmFuel return rpm1,000 rpm

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

± SERVICE SPECIFICATIONSENGINE MECHANICAL (2JZ±GE)
SS±9
165 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)Part tightened
N´mkgf´cmft´lbf
Drive plate x Torque converter clutch4849035
Rear support member x Engine rear mounting insulator13.513510
Front suspension crossmember x Engine mounting insulator7071452
PS gear housing x Front suspension member6566048
Sliding yoke x Steering intermediate shaft3536026
Transmission control rod x Shift lever131309
Transmission control rod x Transmission131309
A/C compressor x Cylinder block Stud bolt
Bolt and nut26
52265
53019
38
Fuel inlet hose x Fuel pipe support2930022
Front suspension member brace x Front suspension member5859043
Front suspension member brace x Strut bar bracket plate5859043
Connecting rod cap x Connecting rod 1st
2nd30
Turn 90°300
Turn 90°22
Turn 90°
Main bearing cap x Cylinder block 1st
2nd45
Turn 90°450
Turn 90°33
Turn 90°
Rear oil seal retainer x Cylinder block6.06053
Engine mounting bracket x Cylinder block5959044
Fuel inlet pipe x Cylinder block2929021
No.1 oil pipe x Cylinder block5555041
Oil filter bracket x Cylinder block9090066
No.2 water bypass pipe x Water pump2121015
No.2 water bypass pipe x Cylinder block2121015
Generator x Water pump4040030
Generator x Cylinder block4040030
Front exhaust pipe x Center exhaust pipe4444032
Center exhaust pipe x Tailpipe4444032
Heated oxygen sensor x Front exhaust pipe4545033

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.).

B02077
Pull
B01982
LEXUS
Hand±Held
Tester
± SFI (2JZ±GE)SFI SYSTEM
SF±5
1471 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(3) After having finished the connection, check if the
pipe and the connector are securely connected by
pulling them.
(4) Check if there is any fuel leakage.
(g) Observe these precautions when handling nylon tube.
(1) Pay attention not to turn the connected part of the
nylon tube and quick connector with force when
connecting them.
(2) Pay attention not to kink the nylon tube.
(3) Do not remove the EPDM protector on the outside
of the nylon tube.
(4) Must not close the piping with the nylon tube by
bending it.
(h) Check that there are no fuel leaks after doing mainte-
nance anywhere on the fuel system.
(1) Connect a LEXUS hand±held tester to the DLC3.
(2) Turn the ignition switch ON and push the LEXUS
hand±held tester main switch ON.
NOTICE:
Do not start the engine.
(3) Select the ACTIVE TEST mode on the LEXUS
hand±held tester.
(4) Please refer to the LEXUS hand±held tester opera-
tor 's manual for further details.
(5) If you have no LEXUS hand±held tester, connect
the positive (+) and negative (±) leads from the bat-
tery to the fuel pump connector.
(See page SF±6)
(6) Check that there are no leaks from any part of the
fuel system.
(7) Turn the ignition switch OFF.
(8) Disconnect the LEXUS hand±held tester from the
DLC3.
(9) Start the engine.
NOTICE:
Keep cranking the engine until the air is removed from the
fuel line.
(10) After the engine starts, check again that there are
no fuel leaks.

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)

B01887
B01889
Pry
Pry
B01890
Pull
B01891
Pull SF±12
± SFI (2JZ±GE)FUEL PUMP
1478 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
8. REMOVE FUEL SUCTION FILTER
(a) Remove the clip.
(b) Pull out the suction filter.
9. REMOVE NO.1 FUEL SUCTION SUPPORT
(a) Using 2 screwdrivers, disconnect the 4 snap claws from
the claw holes and remove the fuel suction support.
NOTICE:
Be careful not to damage the suction support and suction
plate.
(b) Remove the No.2 fuel filter cushion.
10. REMOVE FUEL FILTER AND FUEL PUMP ASSEMBLY
(a) Disconnect the fuel pump connector from the fuel pump.
(b) Pull out the fuel filter and fuel pump assembly.
(c) Remove the No.1 fuel filter cushion.
(d) Remove the O±ring from the fuel poet of the fuel suction
plate.
11. REMOVE FUEL PUMP FROM FUEL FILTER
Pull out the fuel pump.