engine LEXUS LS430 2003 Factory Repair Manual

13.REMOVE FAN ASSY
a. Disconnect the radiator reservoir hose from the radiator.
b. Remove the 6 bolts and fan.
14.INSTALL FAN ASSY
a. Install the fan with the 6 bolts.
Torque: 5.0 Nm (51 kgfcm, 44 in.lbf)
b. Connect the radiator reservoir hose to the radiator.
15.INSTALL RADIATOR AND FAN ASSEMBLY
a. Install the 2 radiator lower supports to the radiator.
b. Attach the 2 radiator lower supports on the radiator to the body bracket.
c. Install the radiator and fan assembly with the 2 radiator upper supports and 2 nuts.
Torque: 13.5 N m (138 kgf cm, 10 ft lbf)
d. Connect the cooling fan ECU connector.
16.INSTALL AIR CLEANER ASSY
17.INSTALL AIR CLEANER INLET NO.1
18.REFILL ENGINE COOLANT (See REPLACEMENT
)
19.CHECK FOR ENGINE COOLANT LEAKS
20.INSTALL ENGINE UNDER COVER NO.1
21.CONNECT BATTERY NEGATIVE TERMINAL
OVERHAUL
1.REMOVE PACKING
2.REMOVE RADIATOR CAP SUB-ASSY
3.REMOVE DRAIN PLUG
a. Remove the drain plug.
b. Remove the O-ring.
4.ASSEMBLE SST
SST 09230-01010
a. Install the claw to the overhaul handle, inserting it in the hole in part A as shown in the illustration
b. While gripping the handle, adjust the stopper bolt so that dimension B is as shown in the
illustration.

HINT:
The installation procedures are the removal procedures in reverse order. However, only installation procedures
requiring additional information are included.
1.DRAIN ENGINE COOLANT FROM RADIATOR (See REPLACEMENT
)
2.REMOVE AIR CLEANER INLET NO.1
3.REMOVE AIR CLEANER ASSY (See REPLACEMENT
)
4.DISCONNECT RADIATOR HOSE NO.1
5.REMOVE FAN ASSY
a. Disconnect the connector.
b. Remove the 6 bolts and fan.
6.REMOVE COOLING FAN ECU
a. Disconnect the 2 connectors.
b. Remove the 2 screws and ECU.
7.REMOVE FAN
a. Remove the 2 nuts and 2 fans.
8.REMOVE COOLING FAN MOTOR
a. Disconnect the 2 wires from the fan shroud.
b. Remove the 6 screws and 2 cooling fan motors.

3. With the brake pedal depressed, push the cruise control main switch to RES/ACC 3 times within 3
seconds. Check that the VSC buzzer sounds at this time.
REPLACEMENT
1.SEPARATE BATTERY NEGATIVE TERMINAL
2.REMOVE ENGINE UNDER COVER NO. 1 (See REPLACEMENT
)
3.REMOVE FRONT WHEEL OPENING EXTENSION PAD LH (See REPLACEMENT
)
4.REMOVE FRONT FENDER LINER LH (See REPLACEMENT
)
5.REMOVE FRONT WHEEL OPENING EXTENSION PAD RH (See REPLACEMENT
)
6.REMOVE FRONT FENDER LINER RH (See REPLACEMENT
)
7.REMOVE FRONT BUMPER COVER (See step 5 in REPLACEMENT
)
8.REMOVE FRONT BUMPER REINFORCEMENT SUB-ASSY (See step 9 in REPLACEMENT
)
9.REMOVE LASER SENSOR
a. Disconnect the connector and remove the laser sensor.

that the A/C control is turned on and off.
FUSE - REFERENCE TABLE
OK:
When OFF is selected on the hand-held tester, the rear defogger should turn off.
When ON is selected on the hand-held tester, the rear defogger should become active.
NG: Go to step 2
OK: REPLACE AIR CONDITIONER CONTROL ASSY AND IF DEFOGGER STILL DOES
NOT OPERATE, REPLACE MULTI-DISPLAY OR CLUSTER INTEGRATION PANEL
2.INSPECT FUSE (DEFOG, FR IG)
a. Remove the DEFOG H-fuse from the FL block.
b. Remove the FR IG fuse from the engine room R/B.
c. Measure the resistance of the fuse.
Standard: Below 1 ohms
NG: REPLACE FUSE
OK: Go to next step
3.CHECK WIRE HARNESS (DEFOG RELAY - BATTERY)
a. Remove the DEFOG relay from the engine room R/B No. 2.
b. Measure the voltage of the wire harness side connector.
Standard:
DEFOG RELAY - BATTERY - VOLTAGE TABLE
ItemTest DetailsDiagnostic Note
DEFOGGER RLY-ROperate rear window defogger
OFF/ON-
Tester ConnectionConditionSpecified Condition
R/B DEFOG relay terminal 1 -
Body groundIgnition switch ON10 to 14 V
R/B DEFOG relay terminal 5 -
Body groundAlways10 to 14 V

Fig. 9: Checking Wire Harness (Defog Relay - Battery)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
OK: Go to next step
4.INSPECT RELAY (Marking: DEFOG)
a. Remove the DEFOG relay from the engine room R/B No. 2.
b. Measure the resistance of the relay.
Standard:
RELAY (Marking: DEFOG) - RESISTANCE TABLE
Tester ConnectionSpecified Condition
3-4Below 1 ohms
3-510 kohms or higher
3-5Below 1 ohms (when battery voltage is applied
to terminals 1 and 2)

Fig. 10: Inspecting Relay
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPLACE RELAY
OK: Go to next step
5.CHECK WIRE HARNESS (REAR WINDOW DEFOGGER - DEFOG RELAY AND BODY
GROUND)
a. Disconnect the R22 and R23 defogger connectors.
b. Disconnect the DEFOG relay from the engine room R/B No. 2.
c. Measure the resistance of the wire harness side connectors.
Standard:
REAR WINDOW DEFOGGER - DEFOG RELAY AND BODY GROUND - RESISTANCE
TABLE
Tester ConnectionSpecified Condition
R22-1 - R/B DEFOG relay terminal 3Below 1 ohms
R23-1 - Body groundBelow 1 ohms

OK: Go to next step
6.CHECK WIRE HARNESS (DEFOG RELAY - A/C CONTROL ASSY)
a. Remove the DEFOG relay from the engine room R/B No. 2.
b. Disconnect the A11 A/C control connector.
c. Measure the resistance of the wire harness side connector.
Standard:
DEFOG RELAY - A/C CONTROL ASSY - RESISTANCE TABLE
Tester ConnectionSpecified Connection
A11-8 (RDFGR) - R/B DEFOG relay terminal 2Below 1 ohms

FORD MOTOR CO.
FORD MOTOR CO. - DOMESTIC CARS
1990On Left Fender Front Panel, Near SBEC
1991-92On Left Front Fender Panel, Near Shock
Tower
1993-94Near Battery
Spirit & Sundance
1985-87On Right Front Shock Tower
1989-90Under Left Side Of Dash
1991-92On Left Front Fender Panel, Near Shock
Tower
1993-94Near Battery
1995Behind Left Side Of Dash, Near Fuse Block
Talon
1990-94Above Left Kick Panel, Near Fuse Block
1995-98Under Left Side Of Dash, Near Center
Console
ApplicationConnector Location
Bobcat & PintoOn Center Of Right Fender Apron
Capri
1980-85On Center Of Left Front Fender Apron
1986On Left Rear Corner Of Engine Compartment
Continental
1984-89On Right Rear Corner Of Engine Compartment
1990-91On Right Rear Corner Of Firewall, On Electronic Assembly
Cover
1992On Right Fender Apron
1993-94VIP Connectors (2) On Right Rear Of Engine Compartment,
On PCM Cover
Contour & Mystique
1995On Left Rear Corner Of Engine Compartment
Cougar & Thunderbird
1982-90On Left Fender Apron
1991On Rear Of Right Front Fender Panel
1992Front Of Right Shock Tower
19932 Connectors In Right Rear Corner Of Engine Compartment

1994On Right Side Of Engine Compartment & Below Glove Box
1995
3.8LOn Right Side Of Engine Compartment & Below Glove Box
4.6LBehind Right Side Of Dash, Below Glove Box
1996Lower Right Side Of Dash, Below Glove Box
Crown Victoria, Grand Marquis & Lincoln Town Car
1983 & 1987On Right Fender Apron
1985-86 & 1988-90On Left Fender Apron
1992On Left Front Fender Panel
1993-94On Top Of Left Front Wheelwell
Escort, EXP, Lynx & Tracer
1985-90On Right Fender Apron Near Firewall
1991On Left Rear Of Engine Compartment
1992On Right Rear Of Engine Compartment, Near Cowl
1993-95On Left Side Of Firewall
LTD & Marquis
1983On Left Fender Apron
1984-86On Left Rear Corner Of Engine Compartment
Mark VII
1984-87On Right Rear Corner Of Engine Compartment
1988-90Front Of Right Fender Apron
1991On Right Side Of Engine Compartment, Near Thermactor
Solenoids
Mark VIII
1993-96On Top Of Left Wheelwell
Mustang
1980-85On Center Of Left Front Fender Apron
1986-91On Left Rear Corner Of Engine Compartment
1992On Left Shock Tower, Near Ignition Coil
19932 Connectors On Right Front Strut Tower
1994-95Behind Right Front Strut Tower & Right Of Steering Column
Probe
1991-92On Left Rear Corner Of Engine Compartment
1993DLC - Behind Left Side Of Dash; STI Connector - On Left
Inner Fender Panel
1994-95On Left Front Inner Fender Panel
Sable & Taurus
1986-87 (3.0L Only)Near Alternator
1988-90
2.5LOn Engine Harness Near PCV Hose
3.0LOn Right Rear Corner Of Engine Compartment

GENERAL MOTORS
GENERAL MOTORS - DOMESTIC CARS
1991On Right Rear Corner Of Engine Compartment, On ECA
Cover
1992On Right Rear Corner Of Engine Compartment, Below MAP
Sensor
1993-95Right Rear Of Engine Compartment
Tempo & Topaz
1984-92On Right Rear Corner Of Engine Compartment
1993-94In Engine Compartment, On Left Strut Tower
ApplicationConnector Location
AllanteEnter Diagnostic Mode By Pressing OFF & WARM Buttons
On Instrument Panel
Bonneville (1980-81)ECU Connector On Upper Right Kick Panel
Brougham (1987-92)Bottom Center Of Instrument Panel
Camaro & Firebird (1980)Diagnostic Ground Lead Connector On Right Shroud Above
ECM
Caprice Classic
1980-81ECU Connector On Upper Right Kick Panel
1982-88Under Center Of Instrument Panel
CatalinaECU Connector On Upper Right Kick Panel
Cavalier (1982-88)On Side Of Fuse Block
CimarronOn Side Of Fuse Block
CenturyUnder Left Of Dash Ashtray
Corvette (1980-83)In Center Console, Under Ashtray
Custom Cruiser
1980-81ECU Connector On Upper Right Kick Panel
1982-88Under Center Of Instrument Panel
DeVille (1981-88)Enter Diagnostic Mode By Pressing OFF & WARMER
Buttons On Instrument Panel
Delta 88ECU Connector On Upper Right Kick Panel
Eldorado (1981-88)Enter Diagnostic Mode By Pressing OFF & WARMER
Buttons On Instrument Panel
Electra (1980-81)ECU Connector On Upper Right Kick Panel
Estate WagonECU Connector On Upper Right Kick Panel
FieroUnder Ashtray Or Cigar Lighter Panel Within Center Console
FirenzaOn Side Of Fuse Block