2000 LEXUS GS400 Service Repair Manual

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.

D01078
D01080
D01082
D01083
D01084
AT±20
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
1968 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
14. REMOVE SHIFT LOCK CONTROL UNIT ASSEMBLY
(a) Remove the shift lock control unit assembly from the shift
lever plate.
(b) Push the shift lock solenoid link lightly, turn and remove
it.
(c) Remove the compression spring.
(d) Remove the slotted spring pin and separate the shift lock
solenoid link.
15. REMOVE SHIFT LEVER SUB±ASSEMBLY
(a) Using a pin punch and hammer, drive out the pin.
(b) Remove the shift lever sub±assembly.
(c) Remove the shift lever nut from the shift lever sub±as-
sembly.
16. REMOVE CONTROL LEVER, SPACER AND CON-
TROL SHAFT
(a) Remove the nut.
(b) Remove the 2 spacers and control shaft from the shift le-
ver plate.
(c) Disconnect the shift lever boot from shift lever plate.
(d) Remove the control lever.

D01085
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
AT±21
1969 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
17. REMOVE CLIP, CONNECTING ROD SWIVEL, LOWER
CONTROL SHAFT BUSHING, LOWER CONTROL
SHAFT PIECE, PLATE WASHER AND SHIFT LEVER
BOOT FROM CONTROL LEVER
(a) Using pliers, remove the clip.
(b) Remove the connecting rod swivel, lower control shaft
bushing, lower control shaft piece, 2 plate washers and
shift lever boot from the control lever.

AT05W±01
D01264
O/D Brake (B0)
O/D One±way
Clutch (F
0) 3rd Coast Brake (B
1)
Direct Clutch (C
2)
Forward Clutch (C
1)
No.1 One±way Clutch (F
1)
2nd Brake (B
3)
1st & Reverse Brake (B
4)
No.2 One±way Clutch (F
2) 3rd Brake (B
2) O/D Direct Clutch (C
0)
Shift Solenoid Valve No.4Shift Solenoid Valve No.3Shift Solenoid Valve No.1 Shift Solenoid Valve No.2
Shift Solenoid Valve SLT
Shift Solenoid Valve SLU
Shift Solenoid Valve SLN
Park
Reverse
Neutral
1st
2nd
4th
5th
1st
4th
1st
3rd
1st
1stS1 S2 S3 C
0C1C2B0B1B2B3B4F0F1F2
: Operating
Gear
Position Shift Lever
Position
ONOFF
ON ON
ON ON
ON ON ON ON
ON
ON
OFF OFF OFF
OFF
OFF OFF
OFF
OFF
OFF OFF
OFFON
ON ON OFF OFF
ON
ONOFF OFF
ON OFF
OFF OFF OFF ON
OFF OFF
OFF ON 2nd
2nd
2nd3rd 3rd
S4
ON OFF ON
OFF ON ON
ON OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF R
N
D
4
3
2
L P
OFFON
OFF
OFFON
OFFOFF
OFF
AT±2
± AUTOMATIC TRANSMISSIONAUTOMATIC TRANSMISSION SYSTEM
1950 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
OPERATION

AT065±01
D01085
D01084
Lip
D01083
D01082
AT±22
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
1970 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REASSEMBLY
HINT:
Before reassembly, apply MP grease to the parts indicated by
arrows.
(See page AT±13)
1. INSTALL CLIP, CONNECTING ROD SWIVEL, LOWER
CONTROL SHAFT BUSHING, LOWER CONTROL
SHAFT PIECE, PLATE WASHER AND SHIFT LEVER
BOOT TO CONTROL LEVER
(a) Install the shift lever boot, 2 plate washers, lower control
shaft piece, lower control shaft bushing and connecting
rod swivel to the control lever.
(b) Using pliers, install the clip.
2. INSTALL CONTROL LEVER, SPACER AND CONTROL
SHAFT
(a) Connect the shift lever boot to the shift lever plate.
HINT:
Pull out the 3 lips of the shift lever boot securely, as shown in
the illustration.
(b) Install the control shaft and 2 spacers.
(c) Install and torque the nut.
Torque: 13 N´m (128 kgf´cm, 9 ft´lbf)
3. INSTALL SHIFT LEVER SUB±ASSEMBLY
(a) Install a new shift lever nut to the shift lever sub±assem-
bly.
HINT:
Insert the shift lever nut securely until it fits and check there is
no looseness.

D01081
D01079
D01922
D01076
D01075
Install
Lower
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
AT±23
1971 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(b) Install the shift lever sub±assembly.
(c) Using a pin punch and hammer, drive in the pin.
4. INSTALL SHIFT LOCK CONTROL UNIT ASSEMBLY
(a) Connect the shift lock solenoid link and install a new
slotted spring pin.
(b) Install the compression spring to the shift lock solenoid
link.
(c) Push and install the shift lock solenoid link with the com-
pression spring to the shift lock control unit assembly.
(d) Install the shift lock control unit assembly.
HINT:
Do not torque the shift lock control unit assembly set screws.
5. INSTALL SHIFT LOCK PLATE STOPPER
(a) Install the shift lever anti±rattle cushion and shift lock
plate stopper cap to the stopper.
(b) Install the stopper to the shift lever plate.
HINT:

Check that the claw of the shift lock plate stopper firmly
fits in and slides smoothly.

Insert and connect the projection of the shift lock plate
stopper into the square hole of the shift lock control unit
assembly.
6. INSTALL NO.1 SHIFT LOCK SWITCH PLATE
(a) Install the shift lever anti±rattle cushion to the roller.
(b) Install the roller and shift lever anti±rattle cushion to the
plate.
(c) Install the No.1 shift lock switch plate in the direction
shown in the illustration and lower to the direction shown
by an arrow.
HINT:
Connect the groove of the No.1 shift lock switch plate to the pro-
jection of the shift lock control unit assembly.

D01073
D01072
D01071
D01069
D01068
AT±24
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
1972 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
7. INSTALL AND TORQUE 2 SHIFT LOCK CONTROL
UNIT ASSEMBLY SET SCREWS
Torque: 2.0 N´m (20 kgf´cm, 17 in.´lbf)
8. INSTALL SPRING HOLDER AND SHIFT LEVER TOR-
SION SPRING
(a) Install the shift lever torsion spring.
(b) Install the spring holder.
9. INSTALL SHIFT LEVER DETENT PIN, SHIFT LEVER
SPRING DAMPER AND COMPRESSION SPRING TO
SHIFT LEVER SUB±ASSEMBLY
10. ASSEMBLE INDICATOR LAMP SUB±ASSEMBLY
(a) Install the terminals of the indicator lamp wire sub±as-
sembly to the connector.
(b) Install the bulb to the indicator lamp wire sub±assembly.
11. INSTALL SHIFT LEVER GUIDE HOUSING AND INDI-
CATOR LAMP SUB±ASSEMBLY
(a) Install the indicator lamp sub±assembly to the shift lever
guide housing.
(b) Install the shift lever housing with the indicator lamp sub±
assembly to the shift lever plate.