LEXUS LS430 2003 Factory User Guide
LS430 2003
LEXUS
LEXUS
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LEXUS LS430 2003 Factory User Guide
Page 1824 of 4500
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OK: GO TO NEXT STEP
7.INSPECT CLOCK ASSY
a. Disconnect the clock assy connector.
b. Measure the voltage according to the value (s) in the table below.
Standard
CLOCK ASSY CONNECTOR TERMINALS VOLTAGE SPECIFICATIONS
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
Fig. 75: Identifying Clock Assy Connector Terminals Front View
Terminal NoConditionSpecified condition
C10-7 - C10-5Ignition switch ON, Passenger seat belt is unfastened10 to 14 V
Page 1825 of 4500
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OK: REPLACE CLOCK ASSY
8.CHECK HARNESS AND CONNECTOR (CLOCK ASSY - COMBINATION METER ASSY)
(SEE HOW TO PROCEED WITH TROUBLESHOOTING
)
a. Disconnect the C10 and C12 connectors.
b. Measure the resistance according to the value (s) in the table below.
Standard
C10 AND C12 CONNECTORS RESISTANCE SPECIFICATIONS
Tester ConnectionConditionSpecified Condition
C12-9 - C10-7AlwaysBelow 1 ohms
C12-9 - Body groundAlways10 kohms or higher
Page 1838 of 4500
Fig. 84: Identifying Light Control Rheostat Connector Terminals
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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: GO TO NEXT STEP
4.REPLACE DRIVER SIDE JUNCTION BLOCK
OK:
Normal operation
NG: REPLACE COMBINATION METER ASSY (SEE OVERHAUL
)
OK: END
5.INSPECT LIGHT CONTROL RHEOSTAT
a. Disconnect the light control rheostat connector.
b. Measure the voltage according to the value (s) in the table below.
Standard
LIGHT CONTROL RHEOSTAT VOLTAGE SPECIFICATIONS
NG: REPLACE LIGHT CONTROL RHEOSTAT
Terminal NoConditionSpecified condition
1 - 2Rheostat knob turned fully clockwiseApprox. 0 kohms
1 - 2Rheostat knob turned fully counterclockwiseApprox. 10 +/- 2 kohms
1 - 3AlwaysApprox. 10 +/- 2 kohms
4 - 1,3Rheostat knob turned fully counterclockwise10 kohms or higher
4 - 1,3Rheostat knob turned to fully clockwiseBelow 1 ohms
Page 2107 of 4500
Fig. 67: Adjusting Drive Pinion Preload
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c. Using SST and a torque wrench, measure the preload.
Drive pinion preload (at starting):
New bearing:
1.5 to 2.0 N.m (15 to 21 kgf.cm, 13 to 18 in..lbf)
Reused bearing:
0.5 to 0.8 N.m (5 to 8 kgf.cm, 4.3 to 6.9 in..lbf)
HINT:
Do not apply hypoid gear oil if a new bearing is used.
Turn the bearing clockwise and counterclockwise several times to stabilize the bearing,
and then measure the backlash.
If the preload is not within the specification, adjust the rear differential drive pinion
preload or repair as necessar
y.
Page 2113 of 4500
Fig. 73: Installing Rear Differential Side Gear Shaft Snap Ring
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b. Install a dial indicator to the differential carrier.
c. Tighten the SST bolt to alter the differential carrier's shape by approximately 0.1 mm
(0.004 in.).
SST 09571-50010
HINT:
Set the dial indicator to the rearmost position (upper side in the illustration) of
the area around where the side gear shaft oil seal is tapped in.
Tighten the SST bolt to apply the preload to the case bearing.
d. Turn the rin
g gear clockwise and counterclockwise several times.
Page 2932 of 4500
Fig. 26: Applying Adhesive
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2. Install the valve.
Torque: 27 N.m (275 kgf.cm, 20 ft.lbf)
HINT:
After applying the specified torque, turn the valve clockwise with the port facing the direction
shown in the illustration.
b. Install the ventilation valve cover.
c. Connect the ventilation hose to the valve.
Page 3146 of 4500
Fig. 157: Removing 3 Clips
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d. Using a screwdriver, remove the wire harness cover.
HINT:
Tape the screwdriver tip before use.
e. Using a screwdriver, remove the 2 rope hooks.
HINT:
Turn the rope hook 90 degrees counterclockwise. Insert a screwdriver (with its tip taped) into the
slit in the side of the rope hook. Hold down the claw inside the slit and remove the rope hook as
shown in the illustration.
Page 3287 of 4500
Fig. 7: CO/HC Symptom Reference Chart
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REPLACEMENT
1.REMOVE AIR CLEANER INLET NO.1
2.REMOVE FAN AND GENERATOR V BELT
a. Loosen the belt tension by turning the belt tensioner counterclockwise, and remove the V belt.
HINT:
The tension pulle
y has a left-hand thread.
Page 3288 of 4500
Fig. 8: Removing Fan And Generator V Belt
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3.INSTALL FAN AND GENERATOR V BELT
a. Set the V belt to everything except the idler pulley No. 2, as shown in the illustration.
b. Loosen the V belt by turning the belt tensioner counterclockwise.
c. Then set the V belt to the idler pulle
y.
Page 3369 of 4500
Fig. 88: Checking Timing Marks
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3. Using the crankshaft damper bolt, turn the crankshaft counterclockwise by approximately
50°.
c. Alternatel
y loosen the 2 bolts, and remove them, the belt tensioner and dust boot.