2003 LEXUS LS430 transmission

Fig. 12: Identifying DLC3 Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
DLC3 TERMINALS SPECIFIED CONDITION
HINT:
If the display shows UNABLE TO CONNECT TO VEHICLE when you have connected the cable of the
hand-held tester to the DLC3, turned the ignition switch ON and operated the tester, there is a problem on
the vehicle side or tool side.
Symbols (Terminals No.)Terminal DescriptionConditionSpecified condition
SIL (7) - SG (5)Bus "+" lineDuring transmissionPulse generation
CG (4) - Body groundChassis groundAlwaysBelow 1 ohms
SG (5) - Body groundSignal groundAlwaysBelow 1 ohms
BAT (16) - Body groundBattery positiveAlways11 to 14 V
CANH (6) - CANL (14)HIGH-level CAN bus lineIG switch OFF54 to 67 ohms
CANH (6) - Battery positiveHIGH-level CAN bus lineIG switch OFF1 Mohms or Higher
CANH (6) - CG (4)HIGH-level CAN bus lineIG switch OFF3 kohms or Higher
CANL (14) - Battery positiveLOW-level CAN bus lineIG switch OFF1 Mohms or Higher
CANL (14) - CG (4)LOW-level CAN bus lineIG switch OFF3 kohms or Higher

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.

Clean both sealing surfaces with a non-residue solvent.
Parts must be reassembled within 10 minutes of application. Otherwise, the packing (FIPG) material must
be removed and reapplied.
ADJUSTMENT
1.BEFORE TRANSMISSION FILL
This transmission requires Toyota Genuine ATF WS transmission fluid.
After servicing the transmission, you must refill the transmission with the correct amount of fluid.
Fig. 1: Identifying Transmission Case Cover Bolts

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Maintain the vehicle in a horizontal position while adjusting fluid level.
Proceed to step 2 if you replaced the transmission pan, drain plug, valve body and/or torque
converter.
Proceed to step 3 after removing the two bolts, transmission case cover and refill plug if you
replaced the transmission hose, output shaft oil seal and/or radiator.

Fig. 3: Identifying Overflow Plug
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2.TRANSMISSION PAN FILL
a. Remove the refill plug and overflow plug.
b. Fill the transmission through the refill hole until fluid begins to trickle out of the overflow tube.
c. Reinstall the overflow plug.
Fig. 4: Identifying Overflow Tube

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
3.TRANSMISSION FILL
a. Fill the transmission with the correct amount of fluid as listed in the table below.
b. Reinstall the refill plug to avoid fluid splash.
TRANSMISSION FLUID REFERENCE
Performed RepairFill Amount
Radiator removal0.7 liters (0.74 US qts, 0.61 Imp. qts)
Transmission hose and pipe removal0.6 liters (0.63 US qts, 0.53 Imp. qts)

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.

Fig. 8: Removing 4 Bolts And Separating Engine Rear Mounting Member
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
24.REMOVE TRANSMISSION CONTROL SHAFT LEVER RH
a. Remove the nut and transmission control shaft lever RH.