sensor LEXUS LS430 2003 Factory Repair Manual

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.

3.INSPECT BATTERY VOLTAGE
Standard: 11 to 14 V
If voltage is below 11 V, recharge the battery before proceeding.
1.DATA LIST
HINT:
Using the hand-held tester's DATA LIST allows switch, sensor, actuator and other item values to be read
without removing any parts. Reading the DATA LIST early in troubleshooting is one way to save time.
a. Connect the hand-held tester (with CAN VIM) to the DLC3.
b. Turn the ignition switch ON.
c. Read the DATA LIST on the tester's screen.
Driver side J/B ECU:
DRIVER SIDE J/B ECU
2.ACTIVE TEST
HINT:
Performing the hand-held tester's ACTIVE TEST allows relay, VSV, actuator and other items to be
operated without removing any parts. Performing the ACTIVE TEST early in troubleshooting is one way
to save time. The DATA LIST can be displayed during the ACTIVE TEST.
a. Connect the hand-held tester (with CAN VIM) to the DLC3.
b. Turn the ignition switch ON.
c. Perform the ACTIVE TEST accordin
g to the display on the tester.
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
ItemMeasurement
Item/Display (Range)Normal ConditionDiagnostic
Note
FUEL LID
OPN SWFuel lid opener switch
signal /ON or OFFON: Fuel lid opener switch is pushed OFF:
Fuel lid opener switch is not pushed-

Fig. 2: Fuel System - System Diagram (1 Of 3)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Fuel s
ystem is determined by the ECM based on signals from various sensors.

Fig. 27: Bringing Gas Leak Detector Close To Drain Hose
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HINT:
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4c0051004a000300580051004c005700030049005200550003[more than 15 minutes.
Hold the gas leak detector sensor under the drain hose.
When bringing the gas leak detector close to the drain hose, make sure that the gas leak
detector does not react to volatile gases.
If such reaction is unavoidable, the vehicle must be lifted up.
c. If a gas leak is not detected on the drain hose, remove the blower motor control (blower resistor)
from the cooling unit. Insert the gas leak detector sensor into the unit and perform the test.
d. Disconnect the connector and leave the pressure switch for approximately 20 minutes. Bring the
gas leak detector close to the pressure switch and perform the test.
e. Bring the gas leak detector close to the refrigerant lines and perform the test.
f. Remove the air duct No. 2.
g.Using a gas leak detector, check for leakage of refrigerant from evaporator and joint.

INSPECTION
1.CHECK EVAPORATOR AND HEATER RADIATOR FINS FOR FOREIGN MATTER
If foreign matter is attached to the fin, blow it off with compressed air.
2.CHECK FITTINGS FOR CRACKS OR SCRATCHES
a. Repair as necessary.
3.INSPECT EVAPORATOR TEMPERATURE SENSOR CIRCUIT (See DTC B1413:
EVAPORATOR TEMPERATURE SENSOR CIRCUIT )
4.INSPECT COOL AIR BYPASS DAMPER POSITION SENSOR CIRCUIT (DRIVER SIDE) (See
DTC B1434: MAX COOL DAMPER POSITION SENSOR CIRCUIT (DRIVER SIDE)
)
5.INSPECT COOL AIR BYPASS DAMPER CONTROL SERVOMOTOR CIRCUIT (DRIVER
SIDE) (See COOL AIR BYPASS DAMPER CONTROL SERVOMOTOR CIRCUIT (DRIVER
SIDE) )
6.INSPECT COOL AIR BYPASS DAMPER POSITION SENSOR CIRCUIT (PASSENGER SIDE)
(See COOL AIR BYPASS DAMPER CONTROL SERVOMOTOR CIRCUIT (PASSENGER
SIDE) )
7.INSPECT COOL AIR BYPASS DAMPER CONTROL SERVOMOTOR CIRCUIT (PASSENGER
SIDE) (SEE COOL AIR BYPASS DAMPER CONTROL SERVOMOTOR CIRCUIT
(PASSENGER SIDE) )
8.INSPECT WATER VALVE CONTROL SERVOMOTOR CIRCUIT (See WATER VALVE
CONTROL SERVOMOTOR CIRCUIT )
9.INSPECT AIR VENT MODE DAMPER CONTROL SERVOMOTOR CIRCUIT (See AIR VENT
MODE DAMPER CONTROL SERVOMOTOR CIRCUIT )
10.INSPECT AIR MIX DAMPER CONTROL SERVOMOTOR CIRCUIT (See AIR MIX DAMPER
CONTROL SERVOMOTOR CIRCUIT )
OVERHAUL
HINT:
Installation is in the reverse order of removal.
See COMPONENTS .
1.DISCONNECT NEGATIVE TERMINAL CABLE FROM BATTERY
2.EVACUATE REFRIGERANT HFC-134A (R134A) (See REPLACEMENT
)
3.DRAIN ENGINE COOLANT FROM RADIATOR
HINT:
It is not necessar
y to drain out all coolant.

Fig. 52: Removing Evaporator Cover
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
20.REMOVE EVAPORATOR TEMPERATURE SENSOR
21.REMOVE HEATER RADIATOR UNIT SUB-ASSY
a. Remove the screw and clamp.
b. Remove the 2 screws, 2 clamps and heater radiator pipes.
c. Remove the 2 O-rings from the heater radiator pipes.
d. Pull out the heater radiator unit sub-assy.

Fig. 89: Disconnecting Liquid Tube Sub-Assy A
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
7.REMOVE HIGH PITCHED HORN ASSY (See REPLACEMENT
)
8.REMOVE LOW PITCHED HORN ASSY (See REPLACEMENT
)
9.REMOVE SMOG VENTILATION SENSOR
a. Disconnect the connector.
b. Remove the bolt and smog ventilation sensor.