2003 LEXUS LS430 replacement

Fig. 82: Identifying Stereo Receiver Assy Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE RADIO RECEIVER ASSY (SEE REPLACEMENT
)
INSPECTION PROCEDURE
1.READ VALUE OF HAND-HELD TESTER
a. Connect the hand-held tester to DLC3.
b. Turn the ignition switch ON and push the hand-held tester main switch ON.
c. Select the items below in the DATA LIST, and read the displays on the hand-held tester.
SPAD:

Fig. 83: Identifying Steering Pad Switch Item Condition Chart
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE
NG: REPLACE STEERING PAD SWITCH (SEE REPLACEMENT
)
CIRCUIT DESCRIPTION
Each unit of the radio receiver system connected to AVC-LAN (communication bus) communicates by
transferring the signals from each switch.
When +B short and GND short occur in this AVC-LAN, radio receiver system will not function normally as
communication is discontinued.
In AVC-LAN, radio receiver assy becomes the communication master, and the radio receiver assy has enough
resistance necessary for transmitting the communication.
WIRING DIAGRAM

Fig. 93: Inspecting Radio Receiver Assy
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPLACE RADIO RECEIVER ASSY (SEE REPLACEMENT
)
OK: Go to next step
2.CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSY - GATEWAY ECU)
a. Disconnect the connector from the radio receiver assy R2 and gateway ECU G3.
b. Measure the resistance according to the value (s) in the table below.
Standard:
TESTER CONNECTION CONDITION CHART
Tester connectionConditionSpecified condition
TX+ - GTX+AlwaysBelow 1 ohms
TX- - GTX-AlwaysBelow 1 ohms
TX+ - Body groundAlways10 kohms or higher

Fig. 97: Inspecting Radio Receiver Assy
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPLACE RADIO RECEIVER ASSY (SEE REPLACEMENT
)
OK: Go to next step
2.CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSY - STEREO COMPONENT
TUNER)
a. Disconnect the connector from the radio receiver assy R3 and stereo component tuner S31.
b. Measure the resistance according to the value (s) in the table below.
Standard:
TESTER CONNECTION CONDITION CHART
Tester connectionConditionSpecified condition
TXM+ - MTX+AlwaysBelow 1 ohms

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.

HINT:
If you cannot add the listed amount of fluid, do the following:
1. Install the refill plug.
2. Allow the engine to idle with air conditioning OFF.
3. Move the shift lever through entire gear range to circulate fluid.
4. Wait for 30 seconds with the engine idling.
5. Stop the engine.
6. Remove the refill plug and add fluid.
7. Reinstall the refill plug.
4.FLUID CIRCULATION
a. Allow the engine to idle with the air conditioning OFF.
b. Move the shift lever through entire gear range to circulate fluid.
5.FLUID TEMPERATURE CHECK
a. With hand-held tester
1. Connect the han
d-held tester to the DLC3.
Output shaft oil seal replacement0.4 liters (0.42 US qts, 0.35 Imp. qts)
Transmission pan and drain plug removal1.3 liters (1.37 US qts, 1.14 Imp. qts)
Transmission valve body removal3.9 liters (4.12 US qts, 3.43 Imp. qts)
Torque converter replacement5.3 liters (5.60 US qts, 4.66 Imp. qts)
Entire transmission assembly7.2 liters (7.61 US qts, 6.34 Imp. qts)

7.TRANSMISSION
a. Install the overflow plug.
b. Stop the engine.
c. Remove the refill plug.
d. Add 0.4 liters (0.42 US qts, 0.35 Imp. qts) of fluid.
e. Allow the engine to idle and wait for 10 seconds.
f. Proceed to next step.
8.COMPLETE
a. Install the overflow plug with a new gasket.
b. Stop the engine.
c. Install the refill plug with a new gasket.
d. Install the transmission case cover with the two bolts.
Torque:
20 N.m (204 kgf.cm, 15 ft.lbf) for overflow plug
39 N.m (400 kgf.cm, 53 ft.lbf) for refill plug
REPLACEMENT
1.DISCONNECT BATTERY NEGATIVE TERMINAL
2.REMOVE INSTRUMENT PANEL UNDER COVER SUB-ASSY NO.2 (SEE REPLACEMENT
)
3.REMOVE INSTRUMENT PANEL GARNISH SUB-ASSY LH (SEE REPLACEMENT
)
4.REMOVE INSTRUMENT PANEL FINISH PANEL (SEE REPLACEMENT
)
5.REMOVE INSTRUMENT PANEL UNDER COVER SUB-ASSY NO.1 (SEE REPLACEMENT
)
6.REMOVE SWITCH BRACE HOLE COVER (SEE REPLACEMENT
)
7.REMOVE INSTRUMENT PANEL SAFETY PAD SUB-ASSY NO.1 (SEE REPLACEMENT
)
8.REMOVE INSTRUMENT PANEL CUP HOLDER ASSY (SEE REPLACEMENT
)
9.REMOVE CONSOLE UPPER REAR PANEL SUB-ASSY (SEE REPLACEMENT
)
10.REMOVE CONSOLE BOX CARPET (SEE REPLACEMENT
)
11.REMOVE REAR CONSOLE ARMREST ASSY (SEE REPLACEMENT
)
12.REMOVE INSTRUMENT PANEL FINISH PANEL LOWER CENTER (SEE REPLACEMENT
)
13.REMOVE INSTRUMENT CLUSTER FINISH PANEL SUB-ASSY CENTER (SEE
REPLACEMENT
)
14.REMOVE CONSOLE PANEL SUB-ASSY UPPER (SEE REPLACEMENT
)
15.REMOVE CONSOLE BOX (SEE REPLACEMENT
)
16.SEPARATE OXYGEN SENSOR (SEE REPLACEMENT
)

17.REMOVE FRONT FLOOR BRACE CENTER (SEE REPLACEMENT )
18.REMOVE EXHAUST PIPE ASSY (SEE REPLACEMENT
)
19.REMOVE FRONT FLOOR HEAT INSULATOR NO.1 (SEE REPLACEMENT
)
20.REMOVE PROPELLER W/CENTER BEARING SHAFT ASSY (SEE OVERHAUL
)
SST 09922-10010
21.SEPARATE FLOOR SHIFT GEAR SHIFTING ROD SUB-ASSY
a. Remove the nut and separate the floor shift gear shifting rod.
Fig. 7: Removing Nut And Separating Floor Shift Gear Shifting Rod

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
22.SUPPORT AUTOMATIC TRANSMISSION ASSY
a. Support the automatic transmission assy with a transmission jack.
23.SEPARATE ENGINE REAR MOUNTING MEMBER
a. Remove the 4 bolts and separate the engine rear mounting member.