2003 LEXUS LS430 lock

Fig. 38: Installing Punch Assembly To Overhaul Handle
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12.CAULK LOCK PLATE
a. Lightly press SST against the lock plate in the order shown in the illustration. After repeating this a
few times, fully caulk the lock plate by gripping the handle until stopped by the stopper plate.
SST 09230-01010

Fig. 39: Identifying Caulk Lock Plate
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HINT:
Do not tap the areas protruding around the ports (1), flange (2) and brackets (3).

Fig. 41: Removing Damage Core Plates
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b. Check the lock plate height (H) after completing the caulking.
Plate height (H): 8.8 mm (0.346 in.)
If not within the specified height, adjust the stopper bolt of the handle again and caulk the lock plate
a
gain.

Fig. 42: Checking Lock Plate Height (H) After Completing Caulking
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13.INSTALL DRAIN PLUG
a. Install a new O-ring to the drain plug.
b. Install the drain plug.
14.INSPECT FOR WATER LEAKS
a. Plug the inlet and outlet pipes of the radiator with SST.
SST 09230-01010
b. Using a radiator cap tester, apply pressure to the radiator.
Test pressure: 177 kPa (1.8 kgf/cm
2 , 26 psi)
c. Submerge the radiator in water.
d. Inspect for leaks.

Fig. 43: Inspecting Water Leaks
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HINT:
On radiators with resin tanks, there is a clearance between the tank and lock plate where a minute amount
of air will remain, giving the appearance of an air leak when the radiator is submerged in water. Before
doin
g the water leak test, first shake the radiator in the water until all air bubbles disappear.

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A: REPLACE ECM (SEE REPLACEMENT
)
5.INSPECT DRIVER SIDE J/B
a. Measure the voltage according to the value(s) in the table below.
Fig. 24: Identifying Driver Side Junction Block ECU Connectors

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DRIVER SIDE JUNCTION BLOCK ECU TERMINALS VOLTAGE SPECIFICATION
NG: Go to step 6
OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (DRIVER SIDE J/B ECU - ECM)
6.INSPECT DRIVER SIDE J/B
Pedal conditionTester connectionSpecification
DepressedD3-12 (STPO) - Body ground10 to 14 V
ReleasedD3-12 (STPO) - Body groundBelow 1 V

a. Measure the voltage according to the value(s) in the table below.
Fig. 25: Identifying Driver Side Junction Block ECU Connectors

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DRIVER SIDE JUNCTION BLOCK ECU TERMINALS VOLTAGE SPECIFICATION
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LAMP SWITCH - DRIVER
SIDE J/B ECU)
OK: REPLACE DRIVER SIDE J/B
CIRCUIT DESCRIPTION
Pedal conditionTester connectionSpecification
DepressedD3-12 (STPI) - Body ground10 to 14 V
ReleasedD3-12 (STPI) - Body groundBelow 1 V

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HINT:
If the value does not change to 0°, it is possible that the sensor is aiming at something
different. Reconfirm that there are no reflective materials in the surroundings.
3. Cover the sensor's right half with metal that can block radio wave (such as aluminum foil) in
order to reset the driving learning values (approximately 10 seconds).
Fig. 38: Covering Sensor With Metal

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HINT:
When the reset is completed, the buzzer sounds for 10 seconds.