Lexus SC300 / Lexus SC400. Manual - part 96

PARK/NEUTRAL POSITION (PNP)
SWITCH
PARK/NEUTRAL POSITION SWITCH
REPLACEMENT

AT073–04

1. 

REMOVE FRONT EXHAUST PIPE
(See pages EG–204)

2.  DISCONNECT PARK/NEUTRAL POSITION SWITCH

CONNECTOR

3. 

REMOVE PARK/NEUTRAL POSITION SWITCH

(a)  Remove the control shaft lever.
(b)  Pry off the lock washer and remove the nut.
(c)  Remove the bolt and pull out the park/neutral position switch.

4. 

INSPECT PARK/NEUTRAL POSITION SWITCH
(See page AT–106)

5. INSTALL 

AND 

ADJUST 

PARK/NEUTRAL 

POSITION

SWITCH
(See page AT–49)

6.  CONNECT PARK/NEUTRAL POSITION SWITCH

CONNECTOR

7. 

INSTALL FRONT EXHAUST PIPE
(See page EG–204)

KICK–DOWN SWITCH

KICK–DOWN SWITCH REPLACEMENT

AT074–04

1. 

REMOVAL OF KICK–DOWN SWITCH

(a)  Remove the 3 bolts and kick–down switch.
(b)  Disconnect the kick–down switch connector.

2. 

INSTALLATION OF KICK–DOWN SWITCH

(a)  Connect the kick–down switch connector.
(b)  Install the kick–down switch and 3 bolts.

AT–18

–

A304E (1UZ–FE) AUTOMATIC TRANSMISSION

KICK–DOWN SWITCH

VALVE BODY

VALVE BODY REMOVAL

AT0GG–02

1. DRAIN 

ATF

2. 

REMOVE FRONT EXHAUST PIPE
(See pages EG–204)

3. 

REMOVE OIL PAN

(a)  Remove the 19 bolts.
(b)  Install the blade of SST between the transmission case and

oil pan, cut off applied sealer.
SST 09032–00100

NOTICE: Be careful not to damage the oil pan flange.

4. 

EXAMINE PARTICLES IN PAN
Remove the magnets and use them to collect steel particles.
Carefully look at the foreign matter and particles in the pan
and on the magnets to anticipate the type of wear you will find
in the transmission:
Steel (magnetic) 

…

 bearing, gear and clutch plate wear

Brass (non–magnetic) 

…

 bushing wear

5. 

REMOVE OIL STRAINER
Remove the 3 bolts holding the oil strainer to the valve body.

6. 

REMOVE SOLENOID WIRING

(a)  Remove the 2 bolts and the clamp.
(b)  Disconnect the 4 connectors from the solenoid valves.

–

A304E (1UZ–FE) AUTOMATIC TRANSMISSION

VALVE BODY

AT–19

7. 

REMOVE 4 SOLENOID VALVES

(a)  Remove the No. 1 and No.2 solenoid valves.
(b)  Remove the O–rings from the No. 1 and No.2 solenoid

valves.

(c)  Remove the lock plate and No.3 and No.4 solenoid valves.

8. 

REMOVE THROTTLE CABLE
Disconnect the throttle cable from the cam.

9. REMOVE 

VALVE 

BODY

(a)  Remove the 20 bolts.
(b)  Remove the valve body.

NOTICE: Do not drop the check ball body and spring.

10. INSPECT 

VALVE 

BODY

Refer to ‘94 A340E and A341E Automatic Transmission Re-
pair Manual (for LEXUS SC400)

AT–20

–

A304E (1UZ–FE) AUTOMATIC TRANSMISSION

VALVE BODY

VALVE BODY INSTALLATION

AT0GH–02

1. 

INSTALL 4 SOLENOID VALVES

2. 

INSTALL CHECK BALL BODY AND SPRING AND HOLD
IT

3. INSTALL 

VALVE 

BODY

(a)  Align the groove of the manual valve to the pin of the lever.

(b)  Install the 20 bolts and clamp.

Torque: 10 N

⋅

m (100 kgf

⋅

cm, 7 ft

⋅

lbf)

(c)  Connect the throttle cable to the cam.

–

A304E (1UZ–FE) AUTOMATIC TRANSMISSION

VALVE BODY

AT–21