2000 LEXUS GS400 clock

P10918
A02646
A02645
Turn
A02656
A02691
SST
± ENGINE MECHANICAL (2JZ±GE)TIMING BELT
EM±27
1381 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
16. INSTALL TIMING BELT TENSIONER
(a) Temporarily install the tensioner with the 2 bolts.
(b) Alternately tighten the 2 bolts.
Torque: 27 N´m (270 kgf´cm, 20 ft´lbf)
(c) Remove the 1.5 mm hexagon wrench from the tensioner
with pliers.
17. CHECK VALVE TIMING
(a) Slowly turn the crankshaft pulley 2 revolutions from TDC
to TDC.
NOTICE:
Always turn the crankshaft clockwise.
(b) Check that each pulley aligns with the timing marks as
shown in the illustration.
If the marks do not align, remove the timing belt and reinstall it.
18. TIGHTEN CRANKSHAFT PULLEY BOLT
Using SST, install the pulley bolt.
SST 09213±70010, 09330±00021
Torque: 330 N´m (3,300 kgf´cm, 243 ft´lbf)
19. INSTALL DRIVE BELT TENSIONER
Install the tensioner with the 3 bolts.
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
NOTICE:
Be careful not to drop the bolts inside the timing belt cover.

A02638
A02651
A02664
EX
IN135
24
135
24 1 1
EM±6
± ENGINE MECHANICAL (2JZ±GE)VALVE CLEARANCE
1360 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
5. REMOVE NO.3 TIMING BELT COVER
Using a 5 mm hexagon wrench, remove the 4 bolts, oil filler cap,
timing belt cover and gasket.
6. REMOVE IGNITION COILS AND HIGH±TENSION
CORD SET ASSEMBLY (See page IG±7)
7. REMOVE SPARK PLUGS
8. DISCONNECT ENGINE WIRE FROM CYLINDER HEAD
COVERS
9. REMOVE CYLINDER HEAD COVERS
(See page EM±33)
10. SET NO.1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley and align its groove with the
timing mark º0º of the No.1 timing belt cover.
NOTICE:
Always turn the crankshaft clockwise.
(b) Check that the timing marks of the camshaft timing pul-
leys are aligned with the timing marks of the No.4 timing
belt cover.
If not, turn the crankshaft 1 revolution (360°).
11. INSPECT VALVE CLEARANCE
(a) Check only those valves indicated in the illustration.

Using a feeler gauge, measure the clearance be-
tween the valve lifter and camshaft.

Record the valve clearance measurements of those
that are out of specification. They will be used later
to determine the required replacement adjusting
shim.
Valve clearance (Cold):
Intake0.15 ± 0.25 mm(0.006 ± 0.010 in.)
Exhaust0.25 ± 0.35 mm (0.010 ± 0.014 in.)
(b) Turn the crankshaft pulley 1 revolution (360°), and align
the groove with the timing mark º0º of the No.1 timing belt
cover.

EM0DO±03
A09756

Before installing oxygen sensor, twist
sensor wire counterclockwise 3 and 1/2
turns.

After installing oxygen sensor, check that
sensor wire is not twisted. If it is twisted,
remove oxygen sensor and reinstall it.HINT:
Ring
RingRing BracketHeat Insulator
RH Tailpipe


Heat
Insulator

 
RingBracketRing Tailpipe
Baffle Gasket
Center Exhaust PIpe
 Gasket
Ring
Heat Insulator
LH Tailpipe
Tailpipe
Baffle
44 (440, 32)
44 (440, 32)
Front Floor
Center Brace
Heated Oxygen Sensor
Heated Oxygen Sensor
(Bank 2 Sensor 2)
Heat InsulatorHeat Insulator
45 (450, 33)
44 (440, 32)
 Gasket
N´m (kgf´cm, ft´lbf) : Specified torque
 Non±reusable partPipe Support Bracket
Front Exhaust Pipe
 Gasket Heat
Insulator
44 (440, 32)
± ENGINE MECHANICAL (2JZ±GE)EXHAUST SYSTEM
EM±97
1451 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
EXHAUST SYSTEM
COMPONENTS

IN0EI±01
BO4111
Negative Cable
IN±10
± INTRODUCTIONFOR ALL OF VEHICLES
10 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
FOR ALL OF VEHICLES
PRECAUTION
1. FOR VEHICLES EQUIPPED WITH SRS AIRBAG AND
SEAT BELT PRETENSIONER
(a) The LEXUS GS400/GS300 is equipped with an SRS
(Supplemental Restraint System), such as the driver air-
bag, front passenger airbag assembly, side airbag as-
sembly and seat belt pretensioners.
Failure to carry out service operations in the correct se-
quence could cause the supplemental restraint system to
unexpectedly deploy during servicing, possibly leading to
a serious accident.
Further, if a mistake is made in servicing the supplemental
restraint system, it is possible the SRS may fail to operate
when required. Before servicing (including removal or
installation of parts, inspection or replacement), be sure
to read the following items carefully, then follow the cor-
rect procedure described in this manual.
(b) GENERAL NOTICE
(1) Malfunction symptoms of the supplemental re-
straint system are difficult to confirm, so the diag-
nostic trouble codes become the most important
source of information when troubleshooting. When
troubleshooting the supplemental restraint system,
always inspect the diagnostic trouble codes before
disconnecting the battery (See page DI±552).
(2) Work must be started after 90 seconds from the
time the ignition switch is turned to the ºLOCKº posi-
tion and the negative (±) terminal cable is discon-
nected from the battery.
(The supplemental restraint system is equipped
with a back±up power source so that if work is
started within 90 seconds of disconnecting the neg-
ative (±) terminal cable from the battery, the SRS
may deploy.)
When the negative (±) terminal cable is discon-
nected from the battery, memory of the clock and
audio systems will be cancelled. So before starting
work, make a record of the contents memorized by
the each memory system. Then when work is fin-
ished, reset the clock and audio systems as before.
This vehicle has power tilt and power telescopic
steering, power seat and power outside rear view
mirror, which are all equipped with memory function,
it is not possible to make a record of the memory
contents. So when the work is finished, therefore it
will be necessary to explain this fact to the custom-
er, and ask the customer to adjust the features and

Z10210
SST
± PROPELLER SHAFTPROPELLER SHAFT ASSEMBLY
PR±11
1998 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(i) Using SST, tighten the adjusting nut.
SST 09922±10010
Torque: 50 N´m (515 kgf´cm, 37 ft´lbf)
HINT:
Use a torque wrench with a fulcrum length of 34.5 cm (13.6 in.).
2. INSPECT JOINT ANGLE (See page PR±12)
NOTICE:
The joint angle should by all means be checked when the
propeller shaft is removed and installed.
3. INSTALL 2 HEAT INSULATORS
(a) Install the heat insulator and torque the 4 bolts.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
(b) Install the heat insulator and torque the 6 bolts.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
4. INSTALL EXHAUST PIPE ASSEMBLY
(a) Connect the exhaust pipe assembly to the O±rings.
(b) 2JZ±GE Engine:
Install the 3 bolts, nuts and 2 gaskets to the exhaust man-
ifold. Torque the bolts.
Torque: 44 N´m (450 kgf´cm, 33 ft´lbf)
(c) 1UZ±FE Engine:
Install the 4 bolts, nuts and 2 gaskets to the exhaust man-
ifold. Torque the bolts.
Torque: 44 N´m (450 kgf´cm, 33 ft´lbf)
(d) Install the front floor center brace and torque the 2 bolts.
Torque: 7.4 N´m (75 kgf´cm, 65 in.´lbf)
(e) Connect the heated oxygen sensor.
Torque: 44 N´m (450 kgf´cm, 33 ft´lbf)
HINT:

Before installing the oxygen sensor, twist the sensor wire
counterclockwise 3 and 1/2 turns.

After installing oxygen sensor, check that the sensor wire
should not twist. If it is twisted, remove the oxygen sensor
and reinstall it.

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.

SF0NO±05
B02816
B02692
30°(3)
(2)
B01951
Turn
(3)
(2)
± SFI (2JZ±GE)THROTTLE BODY
SF±37
1503 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REPLACEMENT
NOTICE:

To prevent deterioration, do not shock the throttle
position sensor and accelerator pedal position sen-
sor.

Mixing of the foreign objects may cause the gear lock-
ing, so thoroughly check that there is no stuck of any
foreign objects and clean up if any.
1. REPLACE THROTTLE POSITION SENSOR
(a) Remove the 2 set screws and throttle position sensor.
(b) Reinstall the throttle position sensor.
(1) Check that the throttle valve is under the condition
of the opener opening angle (about 3.5°).
(2) Install the sensor to the place where is at 30° ro-
tated to the right from the specified installation posi-
tion.
(3) Gradually turn sensor counterclockwise until it
touches the throttle valve shaft and temporarily
torque the 2 set screws.
(c) Adjust the throttle position sensor.
(1) Connect the throttle position sensor connector.
NOTICE:
At this time, do not connect the throttle control motor con-
nector.
(2) Connect the LEXUS hand±held tester or OBDII
scan tool to the DLC3.
(3) Turn the ignition switch ON.
NOTICE:
After turning the ignition switch ON, do not depress the ac-
celerator pedal.
(4) While reading the value of the throttle valve opening
percentage (THROTTLE POS) of the CURRENT
DATA, turn the throttle position sensor slowly to left
and set the sensor at the center value of the stan-
dard value, and then torque the screws.
Torque: 1.7 N´m (17.5 kgf´cm, 15 in.´lbf)
Standard throttle valve opening percentage:
14.8 ± 0.8 %

P10592
Ohmmeter
No Continuity
P10821
Free
LOCK
B01968
Ohmmeter
Continuity
Terminal CTerminal 50
B01969
Ohmmeter
Continuity
Terminal 50
± STARTING (2JZ±GE)STARTER
ST±9
1627 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
6. INSPECT BRUSH HOLDER
Check the brush holder insulator. Using an ohmmeter, check
that there is no continuity between the positive (+) and negative
(±) brush holders.
If there is continuity, repair or replace the brush holder.
7. INSPECT CLUTCH AND GEAR
(a) Check the gear teeth on the pinion gear, idle gear and the
clutch assembly for wear or damage.
If damaged, replace the gear or clutch assembly.
If damaged, also check the drive plate ring gear for wear or
damage.
(b) Check the clutch pinion gear.
Rotate the pinion gear counterclockwise, and check that
it turns freely. Try to rotate the pinion gear clockwise and
check that it locks.
If necessary, replace the clutch assembly.
8. INSPECT MAGNETIC SWITCH
(a) Check the pull ±in coil for open circuit.
Using an ohmmeter, check that there is continuity be-
tween terminals 50 and C.
If there is no continuity, check and replace the magnetic switch.
(b) Check the hold±in coil for open circuit.
Using an ohmmeter, check that there is continuity be-
tween terminal 50 and the switch body.
If there is no continuity, replace the magnetic switch.
9. INSPECT BEARING
Turn the bearing by hand and while apply inward force.
If resistance is felt or bearing sticks, replace the bearing.
(See page ST±10)