automatic transmission LEXUS GS400 2000 Service Repair Manual

AT05V±01
± AUTOMATIC TRANSMISSIONAUTOMATIC TRANSMISSION SYSTEM
AT±1
1949 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
AUTOMATIC TRANSMISSION SYSTEM
PRECAUTION
If the vehicle is equipped with a mobile communication system, refer to the precautions in the IN sec-
tion.

AT060±01
D01091
Shift Lock Control ECU Shift Lock Override ButtonKey Interlock Solenoid
Stop Light Switch
± AUTOMATIC TRANSMISSIONSHIFT LOCK SYSTEM
AT±11
1959 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
SHIFT LOCK SYSTEM
LOCATION

AT061±01
D01925
ACC
EP1KLS+
SLS+
Z16909
4 (+)
3 (±)
Z16910
4 (+)
3 (±)
AT±12
± AUTOMATIC TRANSMISSIONSHIFT LOCK SYSTEM
1960 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. INSPECT SHIFT LOCK CONTROL ECU
Using a voltmeter, measure the voltage at each terminal.
HINT:
Do not disconnect the ECU connector.
TerminalMeasuring ConditionSpecified Condition
(1) IG SW ACC and shift lever P position0 V
1 ± 10 (KLS ± E)(2) IG SW ACC and shift lever except P position7.5 ± 11V (about I second)
after 6 ± 9 V
4 10 (ACC E)(1) IG SW ON10 ± 14 V4 ± 10 (ACC ± E)(2) IG SW ACC10 ± 14 V
7 10 (P1 E)(1) Shift lever P position0 V7 ± 10 (P1 ± E)(2) Shift lever except P position10 ± 14 V
(1) IG SW ON and shift lever P position0 V
8 10 (SLSE)(2) IG SW ON and depress brake pedal or shift lever N position3 ± 6 V8 ± 10 (SLS ± E)(3) IG SW ON and release brake pedal or shift lever except P position0 V
(4) IG SW ACC and shift lever except P position3 ± 6 V
10 ± Ground (E ± Ground)ConstantContinuity
2. INSPECT KEY INTERLOCK SOLENOID
(a) Disconnect the solenoid connector.
(b) Using an ohmmeter, measure the resistance between ter-
minals 3 and 4.
Standard resistance: 12 ± 17 W
If the resistance value is not as specified, replace the solenoid.
(c) Touch the solenoid with your finger and check that the so-
lenoid operation can be felt when battery voltage is ap-
plied intermittently to terminals 3 and 4.
If the operation is not as specified, replace the solenoid.

AT062±01
D01037
No.1 Safety PadEnd Pad
Finish PlateGlove Compartment Panel Assembly
No.2 Under Cover Box Plate
Ash Receptacle
No.1 Under Cover
Cluster Finish Panel
Shift Lever Assembly
Rear Console Armrest
Console Box
No.3 Console Box Mounting Bracket
No.1 Console Box DuctLower Rear Console Box
8.3 (85, 74 in.´lbf)
N´m (kgf´cm, ft´lbf) : Specified torque
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
AT±13
1961 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
FLOOR SHIFT ASSEMBLY
COMPONENTS

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)

D01090
Shift Lever Knob
Shift Lever Knob
Cover
Shift Lever
Sub±AssemblyShift Lever Detent Pin
Shift Lever Spring Damper
Compression Spring
Shift Lock Release Link
Indicator Lamp Wire Position Indicator Housing
Position Indicator
Lens
Slide Cover
Shift Lever Guide
Housing
Shift Lever
Anti±Rattle Cushion
Shift Lock
Plate Stopper
Shift Lever
Torsion Spring
Spring Holder
Lower Control Shaft Bushing
Lower Control Shaft Piece
Plate Washer
Shift Lever Boot Connecting Rod Swivel
Shift Lock Solenoid Link
Control ShaftPin
BulbConnector
Compression Spring
Plate WasherRoller
Spacer
Clip Control Lever
2.0 (20, 17 in.´lbf)
3.9 (40, 35 in.´lbf)
2.0 (20, 17 in.´lbf)
13 (128, 9)
Shift Lock
Control Unit
AssemblyShift Lock Release
Spring
No.1 Shift Lock
Switch PlateShift Lever Plate
Spacer
N´m (kgf´cm, ft´lbf)
: MP grease: Specified torqueShift Lever Cap
Wire Protector

Shift Lever Nut
Shift Lock
Plate Stopper
Cap

Slotted
Spring Pin

Non±reusable part
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
AT±15
1963 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)

AT064±01
D01923
D01061
D01063
D01065
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
AT±17
1965 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
DISASSEMBLY
1. REMOVE SHIFT LEVER KNOB AND SHIFT LEVER
KNOB COVER
2. REMOVE WIRE PROTECTOR
Using a screwdriver, remove the wire protector.
3. REMOVE POSITION INDICATOR HOUSING
(a) Using a screwdriver, remove the position indicator hous-
ing.
(b) Using a screwdriver, remove the shift lever cap from the
position indicator housing.
4. REMOVE POSITION INDICATOR LENS
Using a screwdriver, remove the position indicator lens from the
position indicator housing.
5. REMOVE SLIDE COVER
6. REMOVE SHIFT LOCK RELEASE LINK AND SPRING
(a) Remove the 2 shift lever housing set bolts and nuts with
the shift lock release link and spring.
(b) Using a screwdriver, separate the shift lock release spring
from the shift lock release link.

D01066
D01067
D0190412
3
D01069
D01070
Tip of Screwdriver
AT±18
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
1966 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
7. REMOVE SHIFT LEVER GUIDE HOUSING AND INDI-
CATOR LAMP SUB±ASSEMBLY
(a) Disconnect the indicator lamp wire and connector from
the shift lever plate.
(b) Remove the shift lever guide housing with the indicator
lamp sub±assembly from the shift lever plate.
(c) Remove the indicator lamp sub±assembly from the shift
lever guide housing.
8. DISASSEMBLE INDICATOR LAMP SUB±ASSEMBLY
(a) Remove the bulb from the indicator lamp wire sub±as-
sembly.
(b) Using a small screwdriver, remove the terminals of the in-
dicator lamp wire sub±assembly from the connector, as
shown in the illustration.
9. REMOVE SHIFT LEVER DETENT PIN, SHIFT LEVER
SPRING DAMPER AND COMPRESSION SPRING
FROM SHIFT LEVER SUB±ASSEMBLY
10. REMOVE SPRING HOLDER AND SHIFT LEVER TOR-
SION SPRING
(a) Using a screwdriver, remove the spring holder.

D01072
D01073
D01074
Remove
Raise
D01076
D01077
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
AT±19
1967 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(b) Remove the shift lever torsion spring.
11. REMOVE 2 SHIFT LOCK CONTROL UNIT ASSEMBLY
SET SCREWS
12. REMOVE NO.1 SHIFT LOCK SWITCH PLATE
(a) Disconnect the groove of the No.1 shift lock switch plate
from the projection of the shift lock control unit.
(b) Raise the plate up to the direction shown in the illustra-
tion.
(c) Remove the plate.
(d) Remove the roller and shift lever anti±rattle cushion from
the plate.
(e) Separate the shift lever anti±rattle cushion from the roller.
13. REMOVE SHIFT LOCK PLATE STOPPER
(a) Using pliers, remove the stopper.
(b) Remove the shift lever anti±rattle cushion and shift lock
plate stopper cap from the stopper.