Lexus SC300 / Lexus SC400. Manual - part 95

ON–VEHICLE REPAIR

AT06Y–04

CAUTION: Work must be started after 90 seconds from
the time the ignition switch is turned to the “LOCK” posi-
tion and the negative (–) terminal cable is disconnected
from the battery.

EXTENSION HOUSING

EXTENSION HOUSING REAR OIL SEAL
REPLACEMENT

AT0QW–01

1. DRAIN 

ATF

2. REMOVE 

FRONT EXHAUST PIPE AND HEAT INSULATOR

(See pages EG–204)

3. 

REMOVE PROPELLER SHAFT
(See pages PR–6)

4. 

REMOVE TRANSMISSION OUTPUT FLANGE

(a) Using 

a 

hammer and chisel, loosen the staked part of the nut.

HINT: Shift the shift lever to the P position.
(b) Using SST, remove the nut.
SST 09060–20100

(c)  Tap the output flange with a plastic hammer to remove it and

2 washers.

(d)  Using a screwdriver, remove the oil seal from the output

flange.

5. 

REMOVE EXTENSION HOUSING REAR OIL SEAL
Using SST, remove the oil seal.
SST 09308–00010

AT–14

–

A304E (1UZ–FE) AUTOMATIC TRANSMISSION

EXTENSION HOUSING

6. 

INSTALL EXTENSION HOUSING REAR OIL SEAL

(a)  Coat the lip of oil seal with MP grease.
(b)  Using SST and a hammer, drive in a new oil seal with the lip

facing downward.
SST 09309–37010

Oil seal depth from flat end:

0–0.3 mm (0–0.012 in.)

7. 

INSTALL TRANSMISSION OUTPUT FLANGE

(a)  Using SST and a hammer, drive in a new oil seal.

SST 09517–36010

(b)  Install the output flange and 2 washers.

(c)  Using SST, install and torque a new nut.

SST 09060–20010

Torque: 123 N

⋅

m (1,250 kgf

⋅

cm, 90 ft

⋅

lbf)

HINT: Shift the shift lever to the P position.

(d)  Using a hammer and chisel, stake the nut.
8. 

INSTALL PROPELLER SHAFT
(See pages PR–12)

9. 

INSTALL FRONT EXHAUST PIPE AND HEAT INSULATOR
(See page EG–204)

10.  FILL WITH ATF
11.  CHECK FLUID LEVEL

(See page AT–47)

–

A304E (1UZ–FE) AUTOMATIC TRANSMISSION

EXTENSION HOUSING

AT–15

SPEED SENSOR

NO.1 VEHICLE SPEED SENSOR
REPLACEMENT
(w/ Speedometer Driven Gear)

AT070–04

1. 

REMOVE TRANSMISSION CONTROL ROD REAR SIDE
Remove the transmission control rod rear side set nut.

2. DISCONNECT NO.1 VEHICLE SPEED SENSOR

CONNECTOR

3. 

REMOVE NO.1 VEHICLE SPEED SENSOR ASSEMBLY

(a)  Remove the bolt and No.1 vehicle speed sensor assembly.

(b)  Remove the speedometer driven gear from No.1 vehicle

speed sensor.

(c)  Remove the O–ring from No.1 vehicle speed sensor.

4. 

INSPECT NO.1 VEHICLE SPEED SENSOR
(See page AT–78)

5. 

INSTALL NO.1 VEHICLE SPEED SENSOR ASSEMBLY

(a) Coat 

a 

new O–ring with ATF and install it to the speed sensor.

(b)  Install the speedometer driven gear to the speed sensor.
(c)  Install the No.1 vehicle speed sensor assembly and torque

the bolt.

Torque: 16 N

⋅

m (160 kgf

⋅

cm, 12 ft

⋅

lbf)

6. CONNECT  NO.1  VEHICLE  SPEED  SENSOR

CONNECTOR

7. 

INSTALL TRANSMISSION CONTROL ROD REAR SIDE

8. 

INSPECT AND ADJUST SHIFT LEVER POSITION
(See page AT–48)

AT–16

–

A304E (1UZ–FE) AUTOMATIC TRANSMISSION

SPEED SENSOR

NO.2 VEHICLE SPEED SENSOR
REPLACEMENT

AT0GF–02

1. DISCONNECT NO.2 VEHICLE SPEED SENSOR

CONNECTOR

2. 

REMOVE NO.2 VEHICLE SPEED SENSOR

(a)  Remove the bolt and No.2 vehicle speed sensor.
(b)  Remove the O–ring from it.
3. 

INSPECT NO.2 VEHICLE SPEED SENSOR
(See page AT–86)

4. 

INSTALL NO.2 VEHICLE SPEED SENSOR

(a) Cost 

a 

new O–ring with ATF and install it to the speed sensor.

(b)  Install the speed sensor and torque the bolt.

Torque: 5.4 N

⋅

m (55 kgf

⋅

cm, 48 in.

⋅

lbf)

5. CONNECT  NO.2  VEHICLE  SPEED  SENSOR

CONNECTOR

O/D DIRECT CLUTCH SPEED SENSOR
REPLACEMENT

AT072–04

1.  REMOVE FRONT EXHAUST PIPE AND LH SIDE

CATALYTIC CONVERTER
(See pages EG–204)

2. 

REMOVE LH SIDE HEAT INSULATORS

3. 

DISCONNECT O / D DIRECT CLUTCH SPEED SENSOR
CONNECTOR

4. 

REMOVE O/D DIRECT CLUTCH SPEED SENSOR

(a)  Remove the bolt and O/D direct clutch speed sensor.
(b)  Remove the O–ring from it.
5. 

INSPECT O/D DIRECT CLUTCH SPEED SENSOR
(See page AT–98)

6. 

INSTALL O/D DIRECT CLUTCH SPEED SENSOR

(a)  Coat a new O–ring with ATF and install it to the O/D direct

clutch speed sensor.

(b) Install 

the O/D direct clutch speed sensor and torque the bolt.

Torque: 5.4 N

⋅

m (55 kgf

⋅

cm, 48 in.

⋅

lbf)

7. 

CONNECT O/D DIRECT CLUTCH  SPEED SENSOR
CONNECTOR

8. 

INSTALL LH SIDE HEAT INSULATORS

9. 

INSTALL LH SIDE CATALYTIC CONVERTER AND FRONT
EXHAUST PIPE
(See page EG–204)

–

A304E (1UZ–FE) AUTOMATIC TRANSMISSION

SPEED SENSOR

AT–17