2003 LEXUS LS430 clutch

Fig. 22: Identifying Air Conditioning Amplifier Connector Front View
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
AIR CONDITIONING AMPLIFIER CONNECTOR SPECIFICATIONS
ItemTest Details / Display (Range)Diagnostic Note
ACTUATOR CHECKActuator check / OFF, ON-
Symbols
(Terminal No.)Wiring
colorTerminal DescriptionConditionSpecification
GND - Body
ground (A11-1 -
Body ground)W-B -
Body
groundGround for main power
supplyAlwaysBelow 1.0
ohms
MPX+ (A11-2)GR-BMultiplex communication
systemMultiplex communication circuit-
ACC - GND
(A11-3 - A11-1)GR - W-
BPower source (ACC)Turn ignition switch to ACC.10 to 14 V
MPX- (A11-4)GR-BMultiplex communication
systemMultiplex communication circuit-
BLW - GND
(A11-5 - A11-1)LG-B -
W-BBlower motor speed
control voltageBlower fan speed OFF --> M2 -->
HIPulse
generation
SOL+ - SOL-
(A11-6 - A11-7)P - Y-BCompressor operation
signalA/C magnetic clutch to ON.Pulse
generation
RDFGR - GND
(A11-8 - A11-1)W - W-BRear defogger operation
voltageIgnition switch ON. Rear
defogger switch to OFF.10 to 14 V
RDFGR - GND
(A11-8 - A11-1)W - W-BRear defogger operation
voltageIgnition switch ON. Rear
defogger switch to ON.Below 1.0 V
IG - GND (A11-9
- A11-1)LG-R -
W-BPower source (IG)Ignition switch ON.10 to 14 V

PRECAUTION
1. The automatic transmission is composed of highly precision-finished parts which need careful inspection
before reassembly because even a small nick could cause fluid leakage or affect performance. The
instructions here are organized so that you work on only one component group at a time. This will help
avoid confusion from similar-looking parts of different sub-assemblies being on your workbench at the
same time. The component groups should be inspected and repaired from the converter housing side.
Inspect, repair and reassemble as much as possible before proceeding to the next component group. If a
defect is found in a certain component group during reassembly, inspect and repair this group
immediately. If a component group cannot be assembled because parts are being ordered, be sure to keep
all parts of the group in a separate container while proceeding with disassembly, inspection, repair and
reassembly of other component groups. Recommended ATF: ATF WS
2. All disassembled parts should be washed clean and any fluid passages and holes should be blown through
with compressed air.
3. Dry all parts with compressed air. Never use shop rags.
4. When using compressed air, be careful not to not aim at yourself to prevent accidentally spraying ATF or
kerosene on your face.
5. Only recommended automatic transaxle fluid or kerosene should be used for cleaning.
6. After cleaning, the parts should be arranged in the correct order for efficient inspection, repairs, and
reassembly.
7. When disassembling a valve body, be sure to match each valve together with the corresponding spring.
8. New discs for the brakes and clutches that are to be used for replacement must be soaked in ATF for at
least 15 minutes before reassembly.
9. All oil seal rings, clutch discs, clutch plates, rotating parts, and sliding surfaces should be coated with
ATF prior to reassembly.
10. All gaskets and rubber O-rings should be replaced.
11. Do not apply adhesive cements to gaskets or similar parts.
12. Make sure that the ends of a snap ring are not aligned with one of the cutouts and are installed in the
groove correctly.
13. When replacing a worn bushing, the sub-assembly containing the bushing must also be replaced.
14. Check thrust bearings and races for wear or damage. Replace them as necessary.
15. Use petroleum jelly to keep parts in place.
16. When working with FIPG material, perform the following: Using a razor blade and a gasket scraper,
remove all the old packing (FIPG) material from the gasket surface.
Thoroughly clean all components to remove any loose material.

Fig. 37: Removing Nut And Transmission Control Shaft Lever RH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
36.REMOVE TORQUE CONVERTER CLUTCH ASSY
a. Put matchmarks on the transmission case and torque converter clutch assy.
b. Remove the torque converter clutch assy from the automatic transmission assy.

Fig. 38: Putting Matchmarks On Transmission Case And Torque Converter Clutch Assy
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
37.INSPECT TORQUE CONVERTER CLUTCH ASSY (SEE INSPECTION
)
SST 09350-32014 (09351-32010, 09351-32020)
38.INSTALL TORQUE CONVERTER CLUTCH ASSY
a. Using calipers and a straight edge, measure dimension A between the transmission and the end
surface of the drive plate.

Fig. 39: Measuring Dimension A Between Transmission And End Surface Of Drive Plate
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Aligning the matchmarks on the transmission case and torque converter clutch assy, engage the
splines of the input shaft and turbine runner.

Fig. 40: Aligning Matchmarks On Transmission Case And Torque Converter Clutch Assy
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
c. Engage the splines of the stator shaft and stator while turning the torque converter clutch assy.
HINT:
Turn the torque converter clutch assy approximately 180°.

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Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
d. Turn the torque converter clutch assy and align the matchmarks on the torque converter clutch assy
and transmission case to engage the key of the oil pump drive gear into the slot on the torque
converter clutch assy.

Fig. 42: Aligning Matchmarks On Torque Converter Clutch Assy
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
e. Using calipers and a straight edge, measure the dimension B shown in the illustration and check
that B is
greater than A measured in step (a).