suspension LEXUS GS400 2000 Service Repair Manual

BR0K5±07
F02817
F02818
± BRAKEREAR SPEED SENSOR
BR±61
2169 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. DISCONNECT SPEED SENSOR CONNECTOR
(a) Remove the seat cushion and 2 headrests.
(b) Remove the 4 bolts, 2 nuts and seatback.
Torque: 18 N´m (185 kgf´cm, 13 in.´lbf)
(c) Disconnect the speed sensor connector and pull out the
sensor wire harness with the grommet.
2. REMOVE SPEED SENSOR
(a) Remove the clamp bolt holding the sensor wire harness
to the suspension arm No. 1.
Torque: 5.0 N´m (51 kgf´cm, 44 in.´lbf)
(b) Remove the clamp nut holding the sensor wire harness
to the body.
Torque: 5.5 N´m (56 kgf´cm, 49 in.´lbf)
(c) Remove the sensor installation bolt and speed sensor
from the axle carrier.
Torque: 8.0 N´m (82 kgf´cm, 71 in.´lbf)

EC053±05
B06731
RH Rear Drive Shaft
Rear Suspension
Member Brace
Charcoal Canister AssemblyVapor Pressure
Sensor Connector
EVAP HoseVSV Connector
for Vapor Pressure
Sensor
Air Inlet Hose
83 (850, 61)
50 (510, 37)
Purge Hose
N´m (kgf´cm, ft´lbf) : Specified torque
Air Drain Hose
Vent Line Hose Canister Tank
EC±6
± EMISSION CONTROL (2JZ±GE)EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
1457 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
COMPONENTS

EM0DG±03
A09759
Air Cleaner,
MAF Meter and
Intake Air Resonator
Assembly
PCV Hose
Hood SupportHood
MAF Meter
Connector
Engine Wire
ClampWasher Hose
Accelerator Cable PS Air Hose
EVAP Hose
Air Cleaner Inlet
Radiator Lower Hose
Engine Under CoverFront Suspension
Member Brace x 6
x 18 Radiator Upper Hose
Upper Radiator
Drive Belt
ECM Outlet Duct
ECT Switch Connector
Connector
Radiator Assembly Radiator Lower Support
Oil Cooler Hose for A/TEVAP Hose
Heater
Hose
Support
Electric Cooling Fan Engine Cover
± ENGINE MECHANICAL (2JZ±GE)ENGINE UNIT
EM±59
1413 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
ENGINE UNIT
COMPONENTS

EM0DH±05
A02753
EVAP
Hose
Clamp
MAF Meter
Connector
A02751
EM±62
± ENGINE MECHANICAL (2JZ±GE)ENGINE UNIT
1416 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE HOOD
NOTICE:
Be careful not to damage the body or glass with the hood
end.
2. REMOVE ENGINE UNDER COVER
3. DRAIN ENGINE COOLANT
4. DRAIN ENGINE OIL
5. REMOVE ENGINE COVER
Remove the 4 nuts and engine cover.
6. REMOVE AIR CLEANER INLET
7. REMOVE AIR CLEANER, MAF METER AND INTAKE
AIR RESONATOR ASSEMBLY
(a) Disconnect the MAF meter connector.
(b) Disconnect the engine wire clamp from the air cleaner
case.
(c) Disconnect the EVAP hose from the air cleaner case.
(d) Disconnect the PS air hose from the No.4 timing belt cov-
er.
(e) Disconnect the PCV hose from the No.2 cylinder head
cover.
(f) Loosen the hose clamp bolt holding the intake air resona-
tor to the throttle body.
(g) Remove the 3 bolts, the air cleaner, MAF meter and intake
air resonator assembly.
8. DISCONNECT ACCELERATOR CABLE FROM EN-
GINE
9. REMOVE RADIATOR ASSEMBLY (See page CO±18)
10. REMOVE DRIVE BELT (See page CH±1)
11. REMOVE FRONT SUSPENSION MEMBER BRACE
Remove the 6 bolts and brace.

A02790
A02797
A02796
A02795
A02798
± ENGINE MECHANICAL (2JZ±GE)ENGINE UNIT
EM±65
1419 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(d) Remove the 4 bolts, and disconnect the PS housing from
the front frame.
(e) Disconnect the sliding yoke from the intermediate shaft.
HINT:
Suspend the PS gear housing securely.
18. REMOVE ENGINE AND TRANSMISSION ASSEMBLY
FROM VEHICLE
(a) Install the No.1 engine hanger in the correct direction.
Part No.:
No.1 engine hanger 12281±46050
Bolt 90105±10345
Torque: 40 N´m (400 kgf´cm, 30 ft´lbf)
(b) Attach the engine chain hoist to the engine hangers.
(c) Remove the 2 hole plugs.
(d) Remove the 4 nuts holding the engine mounting insula-
tors to the front suspension crossmember.
(e) Remove the 4 bolts, 4 nuts and rear engine mounting
member.
(f) Lift the engine out of the vehicle slowly and carefully.
HINT:
Make sure the engine is clear of all wiring, hoses and cables.
(g) Place the engine and transmission assembly onto the
stand.

A02728
Dark Green
A09755
Case
Clamp
A02761
New O±Ring
PushClamp
A02799
A02795
± ENGINE MECHANICAL (2JZ±GE)ENGINE UNIT
EM±69
1423 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(b) Hold the crankshaft pulley bolt with a wrench, and install
the 6 bolts evenly.
Torque: 48 N´m (490 kgf´cm, 35 ft´lbf)
HINT:
First install the dark green colored bolt, install the other bolts.
(c) Install the hole plug.
7. INSTALL OIL COOLER PIPE FOR A/T
8. INSTALL EXHAUST MANIFOLD
(a) Install 2 new gaskets to the cylinder head.
(b) Using a 14 mm deep socket wrench, install the exhaust
manifold with the 8 nuts. Uniformly tighten the nuts in sev-
eral passes.
Torque: 40 N´m (408 kgf´cm, 30 ft´lbf)
(c) Connect the heated oxygen sensor (bank 2 sensor 1)
connector.
(d) Install the case clamp.
9. INSTALL OIL DIPSTICK GUIDE AND DIPSTICK FOR
A/T
(a) Install a new O±ring to the dipstick guide.
(b) Push in the dipstick guide end to the dipstick tube of the
oil pan.
(c) Install the dipstick guide with the bolt.
(d) Connect the engine wire clamp to the dipstick guide.
(e) Install the dipstick.
10. INSTALL ENGINE AND TRANSMISSION ASSEMBLY
IN VEHICLE
(a) Attach the engine chain hoist to the engine hangers.
(b) Slowly lower the engine and transmission assembly into
the engine compartment.
(c) Insert the stud bolts of the front engine mounting brackets
into the stud bolt holes of the front suspension crossmem-
ber.
(d) Keep the engine level.
(e) Install the rear engine mounting member with the 4 bolts
and 4 nuts.
Torque:
25.5 N´m (260 kgf´cm, 19 ft´lbf) for bolts
13.5 N´m (135 kgf´cm 10 ft´lbf) for nuts
NOTICE:
Be careful of installation direction.

A02796
A02752
A02789
A02791
A02792
(2)
(4)(3)
EM±70
± ENGINE MECHANICAL (2JZ±GE)ENGINE UNIT
1424 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(f) Install the 4 nuts holding the engine mounting brackets to
the front suspension crossmember.
Torque: 70 N´m (714 kgf´cm, 52 ft´lbf)
(g) Install the 2 hole plugs.
(h) Remove the engine chain hoist.
(i) Remove the bolt and No.1 engine hanger.
11. INSTALL PS GEAR HOUSING
(a) Align the matchmarks and connect the sliding yoke to the
steering intermediate shaft.
(b) Install the PS gear housing with the 4 bolts.
Torque: 65 N´m (660 kgf´cm, 48 ft´lbf)
(c) Install the bolt holding the sliding yoke to the steering in-
termediate shaft.
Torque: 35 N´m (360 kgf´cm, 26 ft´lbf)
(d) Connect the PS pressure switch and wire clamp.
12. INSTALL TRANSMISSION CONTROL ROD
Install the control rod with the 2 nuts.
Torque: 13 N´m (130 kgf´cm, 9 ft´lbf)
If the indicator is not aligned with the correct position, carry out
the following adjustment procedures.
(1) Loosen the nut on the shift lever.
(2) Push the control shaft lever fully rearward.
(3) Return the control shaft lever 2 notches to the N
position.
(4) Set the shift lever to the N position.
(5) While holding the shift lever lightly toward the R
position side, tighten the nut.
Torque: 13 N´m (130 kgf´cm, 9 ft´lbf)

A02765
EVAP Hose
A02751
A02753
EVAP
Hose Clamp
MAF Meter
Connector
EM±72
± ENGINE MECHANICAL (2JZ±GE)ENGINE UNIT
1426 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(g) Connect the heated oxygen sensor (bank 1 sensor 1)
connector.
(h) Connect the heated oxygen sensor (bank 1 sensor 2)
connector.
(i) Connect the EVAP hose to the pipe (from charcoal canis-
ter).
(j) Connect the heater hose to the heater pipe.
(k) Connect the heater hose to the water bypass pipe.
(l) Connect the ground strap to the dash panel.
(m) Connect the fuel inlet hose to the fuel pipe support.
Torque: 29 N´m (300 kgf´cm, 22 ft´lbf)
(n) Connect the starter wire to the terminal and manifold stay.
(o) Connect the ground wire to the floor.
16. INSTALL FRONT SUSPENSION MEMBER BRACE
Install the brace with the 6 bolts.
Torque: 58 N´m (590 kgf´cm, 43 ft´lbf)
17. INSTALL DRIVE BELT (See page CH±1)
18. INSTALL RADIATOR ASSEMBLY (See page CO±23)
19. CONNECT ACCELERATOR CABLE TO ENGINE
20. INSTALL AIR CLEANER, MAF METER AND INTAKE
AIR CONNECTOR PIPE ASSEMBLY
(a) Connect the intake air resonator to the throttle body.
(b) Install the air cleaner case with the 3 bolts.
(c) Tighten the hose clamp bolt holding the intake air resona-
tor to the throttle body.
(d) Connect the MAF meter connector.
(e) Connect the engine wire clamp to the air cleaner case.
(f) Connect the EVAP hose to the air cleaner case.
(g) Connect the PS air hose to the No.4 timing belt cover.
(h) Connect the PCV hose to the No.2 cylinder head cover.
21. INSTALL AIR CLEANER INLET
22. INSTALL ENGINE COVER
Install the engine cover with the 4 nuts.
23. FILL WITH ENGINE COOLANT
24. FILL WITH ENGINE OIL
25. START ENGINE AND CHECK FOR LEAKS
26. INSTALL ENGINE UNDER COVER

IN04Q±07
IN±36
± INTRODUCTIONTERMS
36 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
TERMS
ABBREVIATIONS USED IN THIS MANUAL
AbbreviationsMeaning
ABSAnti±Lock Brake System
ACAlternating Current
ACCAccessory
ACISAcoustic Control Induction System
ACSDAutomatic Cold Start Device
A.D.D.Automatic Disconnecting Differential
A/FAir±Fuel Ratio
AHCActive Height Control Suspension
ALRAutomatic Locking Retractor
ALTAlternator
AMPAmplifier
ANTAntenna
APPROX.Approximately
A/TAutomatic Transmission (Transaxle)
AT FAutomatic Transmission Fluid
AUTOAutomatic
AUXAuxiliary
AV GAverage
AV SAdaptive Variable Suspension
BABrake Assist
BACSBoost Altitude Compensation System
BATBattery
BDCBottom Dead Center
B/LBi±Level
B/SBore±Stroke Ratio
BTDCBefore Top Dead Center
BVSVBimetallic Vacuum Switching Valve
Calif.California
CBCircuit Breaker
CCoCatalytic Converter For Oxidation
CDCompact Disc
CFCornering Force
CGCenter Of Gravity
CHChannel
COMB.Combination
CPECoupe
CPSCombustion Pressure Sensor
CPUCentral Processing Unit
CRSChild Restraint System
CTRCenter
C/VCheck Valve
CVControl Valve

IN±38
± INTRODUCTIONTERMS
38 Author: Date:
2000 LEXUS GS300/GS400 (RM718U) H±FUSE
High Current Fuse
HIHigh
HIDHigh Intensity Discharge (Head Lamp)
HSGHousing
HTHard Top
HWSHeated Windshield System
IACIdle Air Control
ICIntegrated circuit
IDIIndirect Diesel Injection
IFSIndependent Front Suspension
IGIgnition
IIAIntegrated Ignition Assembly
INIntake (Manifold, Valve)
INTIntermittent
I/PInstrument Panel
IRSIndependent Rear Suspension
J/BJunction Block
J/CJunction Connector
KDKick±Down
LANLocal Area Network
LBLiftback
LCDLiquid Crystal Display
LEDLight Emitting Diode
LHLeft±Hand
LHDLeft±Hand Drive
L/H/WLength, Height, Width
LLCLong±Life Coolant
LNGLiquified Natural Gas
LOLow
LPGLiquified Petroleum Gas
LSDLimited Slip Differential
LSP & PVLoad Sensing Proportioning And Bypass Valve
LSPVLoad Sensing Proportioning Valve
MAX.Maximum
MICMicrophone
MILMalfunction Indicator Lamp
MIN.Minimum
MPMultipurpose
MPXMultiplex Communication System
M/TManual Transmission
MTMount
MTGMounting
NNeutral
NANatural Aspiration
No.Number
O/DOverdrive