2000 LEXUS GS400 engine

AC0XX±01
I05028
AC±92
± AIR CONDITIONINGENGINE COOLANT TEMPERATURE (ECT) SWITCH
2777 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
ENGINE COOLANT
TEMPERATURE (ECT) SWITCH
REMOVAL
1. REMOVE ENGINE UNDER COVER
2. DRAIN ENGINE COOLANT FROM RADIATOR
HINT:
It is not necessary to drain out all coolant
3. REMOVE ECT SWITCH
(a) Disconnect the connector.
(b) Remove the ECT switch.
Torque: 7.4 N´m (75 kgf´cm, 65 in.´lbf)
(c) Remove the O±ring from ECT switch.
HINT:
At the time of installation, please refer to the following item.
Lubricate a new O±ring with soapy water and install the switch.

AC0XY±01
P01924
Ohmmeter
± AIR CONDITIONINGENGINE COOLANT TEMPERATURE (ECT) SWITCH
AC±93
2778 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
INSPECT ECT SWITCH
(a) Using an ohmmeter, check that no continuity exists be-
tween the terminals when the coolant temperature is
above 100 °C (212 °F).
If continuity exists, replace the switch.
(b) Using an ohmmeter, check that continuity exists between
the terminals when the coolant temperature is below
91 °C (196 °F).
If there no continuity exists, replace the switch.

AC0XZ±01
AC±94
± AIR CONDITIONINGENGINE COOLANT TEMPERATURE (ECT) SWITCH
2779 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
Installation is in the reverse order of removal (See page AC±92).

D01038
Shift Control Rod
Heat Insulator
Heated Oxygen Sensor
Front Exhaust Pipe Front Exhaust Pipe
Heated Oxygen Sensor Heated Oxygen Sensor
Gasket
13 (130, 9)
5.4 (55, 48 in.´lbf)
44 (450, 33)

Gasket

Gasket

Gasket

Gasket
2JZ±GE Engine:
1UZ±FE Engine:
N´m (kgf´cm, ft´lbf): Specified torque

Non±reusable partx6
44 (450, 33)
44 (450, 33)
44 (450, 33)
44 (450, 33)
44 (450, 33)
44 (450, 33)44 (450, 33)






44 (450, 33)
44 (450, 33)


44 (450, 33)
44 (450, 33)






44 (450, 33)
44 (450, 33)
AT±14
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
1962 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)

AT063±01
D01039
AT±16
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
1964 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. RAISE VEHICLE
NOTICE:
Make sure that the vehicle is securely supported.
2. REMOVE FRONT EXHAUST PIPE
1UZ±FE Engine: (See page EM±120)
2JZ±GE Engine: (See page EM±97)
3. REMOVE HEAT INSULATOR
Remove the 6 bolts and heat insulator.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
4. DISCONNECT SHIFT CONTROL ROD
(See page AT±28)
5. LOWER VEHICLE
6. REMOVE THESE PARTS:
(See page BO±88)

Grove compartment panel assembly

Box plate

No.2 under cover

No.1 safety pad

No.1 under cover

Cluster finish panel

Lower rear console box

Console box and rear console armrest

No.3 console box mounting bracket

Ash receptacle

No.1 console box duct

Finish plate

End pad
7. REMOVE SHIFT LEVER ASSEMBLY
(a) Disconnect the connectors and wire harness from the
shift lever assembly.
(b) Remove the 4 bolts and shift lever assembly.
Torque: 8.3 N´m (85 kgf´cm, 74 in.´lbf)

AT066±01
AT±26
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
1974 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
Installation is in the reverse order of removal.
(See page AT±16)
HINT:
After installation, inspect the shift lever position.

When shifting from P to R position only with ignition switch ON and brake pedal, make sure that the
shifting lever moves smoothly and can be moderately operated.

When starting engine, make sure that the vehicle moves forward when shifting from N to D position
and moves rearward when shifting to R position.

AT067±01
D01040

Gasket
Clamp
ClampAir Cleaner, MAF Meter and Intake
Air Connector Pipe Assembly
Exhaust Manifold with TWC
Connector and
Wire Harness Level Gauge
Filler PipeAdjusting WasherPropeller Shaft Assembly
Shift Control Rod
Torque Converter ClutchPlug for Line
Pressure TestHeat Insulator
Heated Oxygen Sensor
Front and Center
Exhaust PipeFront Floor
Center Brace
Engine Under Cover Pipe Support BracketO±Ring Heat Insulator

Gasket
Starterx6x839 (400, 29)
44 (450, 33)
72 (730, 53)
37 (380, 27)
13 (130, 9)
79 (805, 58)
37 (375, 27)
7.4 (75, 65 in.´lbf)
44 (450, 33)
44 (450, 33)
37 (380, 27)
37 (380, 27)
Hole Plug
5.4 (55, 48 in.´lbf)
Oil Cooler Pipe
x5

O±Ring
5.4 (55, 48 in.´lbf)

Gasket
44 (450, 33)


5.4 (55, 48 in.´lbf)
N´m (kgf´cm,ft´lbf) : Specified torque

Non±reusable part
Gasket
48 (490, 35)
26 (270, 20)
44 (450, 33)
44 (450, 33)


79 (805, 58)
± AUTOMATIC TRANSMISSIONAUTOMATIC TRANSMISSION UNIT (2JZ±GE)
AT±27
1975 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
AUTOMATIC TRANSMISSION UNIT (2JZ±GE)
COMPONENTS

AT068±01
D01041
D01042
AT±28
± AUTOMATIC TRANSMISSIONAUTOMATIC TRANSMISSION UNIT (2JZ±GE)
1976 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE LEVEL GAUGE
2. REMOVE FILLER PIPE
Remove the bolt and filler pipe with the O±ring.
HINT:
At the time of installation, please refer to the following item.
Replace the used O±ring with a new one.
3. REMOVE AIR CLEANER, MAF METER AND INTAKE
AIR CONNECTOR PIPE ASSEMBLY
4. REMOVE EXHAUST MANIFOLD WITH TWC
Remove the 8 nuts, 2 gaskets and exhaust manifold with the
TWC.
Torque: 39 N´m (400 kgf´cm, 29 ft´lbf)
HINT:
At the time of installation, please refer to the following item.
Replace the used gaskets with new ones.
5. RAISE VEHICLE
NOTICE:
Make sure that the vehicle is securely supported.
6. REMOVE ENGINE UNDER COVER
7. REMOVE FRONT AND CENTER EXHAUST PIPE
(a) Disconnect the heated oxygen sensor.
Torque: 44 N´m (450 kgf´cm, 33 ft´lbf)
HINT:
At the time of installation, please refer to the following items.

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

After installing the heated oxygen sensor wire should not
twist. If it is twisted, remove the heated oxygen sensor
and reinstall it.
(b) Remove the 2 bolts and front floor center brace.
Torque: 7.4 N´m (75 kgf´cm, 65 in.´lbf)
(c) Remove the 3 bolts, nuts and 2 gaskets.
Torque: 44 N´m (450 kgf´cm, 33 ft´lbf)
HINT:
At the time of installation, please refer to the following item.
Replace the used nuts and gaskets with new ones.
(d) Remove the 2 bolts and pipe support bracket.
Torque: 44 N´m (450 kgf´cm, 33 ft´lbf)