2003 LEXUS LS430 replacement

Fig. 51: Installing Front Suspension Upper Arm Assy LH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
9.INSTALL STEERING KNUCKLE LH
a. Install the steering knuckle LH to the upper arm assy with the castle nut.
Torque: 87 N.m (885 kgf.cm, 64 in.lbf)
b. Install a new clip on the steering knuckle.
10.INSTALL PNEUMATIC FRONT LH W/SHOCK ABSORBER CYLINDER ASSY (AIR
SUSPENSION) (See REPLACEMENT
)
11.INSTALL FRONT SHOCK ABSORBER WITH COIL SPRING (COIL SPRING) (See
REPLACEMENT
)
12.INSTALL SKID CONTROL SENSOR WIRE
13.INSTALL FRONT WHEELS
Torque: 103 N.m (1,050 kgf.cm, 76 in.lbf)
14.ADJUST VEHICLE HEIGHT (See ON
-VEHICLE INSPECTION )
15.ADJUST FRONT WHEEL ALIGNMENT (See ADJUSTMENT
)

REPLACEMENT
HINT:
Use the same procedures for the RH side and LH side.
The procedures listed below are for the LH side.
1.REMOVE FRONT WHEELS
2.REMOVE LOWER BALL JOINT ASSY FRONT LH (See LOWER BALL JOINT ASSY FRONT
LH REPLACEMENT )
3.SEPARATE HEIGHT CONTROL SENSOR LINK SUB-ASSY FRONT
a. Remove the nut and separate the height control sensor link sub-assy front.
Fig. 52: Separating Height Control Sensor Link Sub
-Assy Front
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
4.REMOVE FRONT SUSPENSION LOWER ARM ASSY LH

Fig. 64: Installing Height Control Sensor Link Sub-Assy Front (Air Suspension)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
9.INSTALL LOWER BALL JOINT ASSY FRONT LH (See LOWER BALL JOINT ASSY FRONT
LH REPLACEMENT )
10.STABILIZE SUSPENSION (See REPLACEMENT
or REPLACEMENT )
11.FULLY TIGHTEN FRONT SUSPENSION LOWER ARM ASSY LH
a. Fully tighten the nut.
Torque: 137 N.m (1,395 kgf.cm, 101 ft.lbf)

Fig. 67: Tightening Front Suspension Lower Arm Assy LH Bolt
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
12.INSTALL FRONT WHEELS
Torque: 103 N.m (1,050 kgf.cm, 76 ft.lbf)
13.ADJUST FRONT WHEEL ALIGNMENT (See ADJUSTMENT
)
14.ADJUST VEHICLE HEIGHT (AIR SUSPENSION) (See ON
-VEHICLE INSPECTION )
15.CHECK ABS SPEED SENSOR SIGNAL (See TEST MODE PROCEDURE
)
REPLACEMENT
HINT:
Use the same procedures for the RH side and LH side.
The procedures listed below are for the LH side.
1.REMOVE FRONT WHEELS
2.SEPARATE FRONT STABILIZER LINK ASSY LH (See REPLACEMENT
)

3.SEPARATE SKID CONTROL SENSOR WIRE (See REPLACEMENT )
4.REMOVE DISC BRAKE CYLINDER ASSY LH (See step 8 in OVERHAUL
)
5.REMOVE FRONT DISC (See step 14 in OVERHAUL
)
6.REMOVE FRONT AXLE HUB SUB-ASSY LH (See step 5 in REPLACEMENT
)
7.REMOVE STEERING KNUCKLE LH
a. Remove the clip and castle nut.
b. Using SST, separate the upper ball joint from the steering knuckle LH.
SST 09628-62011
Fig. 68: Removing Steering Knuckle LH

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
8.SEPARATE TIE ROD ASSY LH
a. Remove the clip and castle nut.
b. Using SST, separate the tie rod end.
SST 09628-62011

b. Install a new cotter pin on the steering knuckle.
14.INSTALL FRONT AXLE HUB SUB-ASSY LH (See step 8 in REPLACEMENT
)
15.INSTALL FRONT DISC (See step 15 in OVERHAUL
)
16.INSTALL DISC BRAKE CYLINDER ASSY LH (See step 21 in OVERHAUL
)
17.INSTALL SKID CONTROL SENSOR WIRE (See step 11 in REPLACEMENT
)
18.INSTALL FRONT STABILIZER LINK ASSY LH (See REPLACEMENT
)
19.INSTALL FRONT WHEELS
Torque: 103 N.m (1,050 kgf.cm, 76 ft.lbf)
20.CHECK ABS SPEED SENSOR SIGNAL (See TEST MODE PROCEDURE
)
REPLACEMENT
1.REMOVE FRONT WHEELS
2.REMOVE FRONT STABILIZER LINK ASSY LH
a. Support the suspension lower arm assy with a jack using a wood block to avoid damage.
b. Remove the bolt and nut to separate the front stabilizer link assy LH.
c. Remove the nut and front stabilizer link assy LH.

Fig. 15: Connecting Hand-Held Tester DLC3
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
c. Select the ACTIVE TEST mode on the hand-held tester.
d. Please refer to the hand-held tester operator's manual for further details.
e. Check that there is pressure in the fuel inlet hose from the fuel filter.
HINT:
If there is fuel pressure, you will hear the sound of fuel flowing. If there is no pressure, check the
fusible link, fuses, EFI MAIN relay, fuel pump, ECM and wiring connections.
f. Turn the ignition switch to LOCK.
g. Disconnect the hand-held tester from the DLC3.
2.CHECK FUEL PRESSURE
a. Check that the battery positive voltage is above 12 V.
b. Disconnect the negative (-) terminal cable from the battery.
c. Remove the fuel pressure pulsation damper from the RH delivery pipe (see REPLACEMENT
).
d. Install the fuel pipe sub-ass
y No. 2 and SST (pressure gauge) to the delivery pipe with the 3 lower

pressure regulator.
i. Disconnect the hand-held tester from the DLC3.
j. Start the engine.
k. Measure the fuel pressure at idle.
Fuel pressure: 304 to 343 kPa (3.1 to 3.5 kgf/cm2, 44 to 50 psi)
l. Stop the engine.
m. Check that the fuel pressure remains as specified for 5 minutes after the engine has stopped.
Fuel pressure: 147 kPa (1.5 kgf/cm2, 21 psi) or more
If pressure is not as specified, check the fuel pump, pressure regulator and/or injectors.
n. After checking fuel pressure, disconnect the negative (-) terminal cable from the battery and
carefully remove the SST to prevent gasoline from spilling.
SST 09268-45014
o. Reinstall the fuel pressure pulsation damper to the RH delivery pipe (see REPLACEMENT
).
p. Reconnect the negative (-) terminal cable to the battery.
q. Check for fuel leaks.
3.INSPECT FUEL PUMP