ect LEXUS SC300 1991 Service Repair Manual

6. INSTALL ROOF SIDE INNER GARNISH(a) Place the inner garnish on the quarter panel and installit by tapping it in.
(b) Install four screws.
7. INSTALL QUARTER TRIM AND ASSIST GRIP (a) Place the trim on the quarter panel and install it bytapping it in.
(b) Install the belt guide with the clip.
(c) Install the front seat belt anchor with the bolt.
Torque: 43 N Vm (440 kgf Vcm, 32 ft Vlbf)
(d) Install the assist grip with two screws and two caps.
8. INSTALL REAR SEAT CUSHION AND BACK (See page BO±67)
Torque: 18 N Vm (185 kgf Vcm, 13 ft Vlbf)
9. INSTALL CENTER VISOR
(a) Connect the connector.
(b) Install the visor with two screws and the cover.
10. INSTALL SUN VISOR (a) Install the holder with the screw.
(b) Install the sun visor with two screws and the cover.
±
BODY Trim, Assist Grip and VisorBO±125
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ExampleGENERAL INFORMATION
HANDLING PRECAUTIONS
Taping
When it is possible that the body or parts may be scratched
during the operation, apply protection tape before starting
work.
Example:
1. Before starting work, apply protection tape to bodysurfaces around parts to be removed and installed.
2. Before prying parts loose with a screwdriver or scraper etc., apply protection tape to the tip of the tool to avoid
scratching parts or painted surfaces of the body.
Battery
In order to prevent a short circuit while doing work on the elec-
trical circuit such as disconnecting a connector, first turn off
the ignition switch and disconnect the negative cable from
the battery terminal before starting work.
HINT: When battery voltage is required for operation of a
functioning part, connect the cable to the battery when need-
ed, and promptly disconnect it when no longer necessary.
CAUTION:
wWork must be started after approx. 20 seconds or longer
from the time the ignition switch is turned to the ºLOCKº
position and the negative (±) terminal cable is
disconnected from the battery.
wTo avoid erasing the memory of each memory system,
never use a back±up power supply from outside the
vehicle.
Fitting Adjustments
When removing and installing body panels which have a pre-
load value, after the installation refer to the page containing
the installation adjustment methods, and make adjustments
according to the required specifications.
HINT: When making adjustments, do not completely loos-
en the bolts and nuts of the part being adjusted. T ighten them
appropriately, and move the panels by hand to align them.
BO±2
±
BODY General Information
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ANTI±RUST TREATMENT
Anti±rust treatment used on the vehicle body includes body
sealer, undercoat, rust inhibitor and paint.
HINT: Refer to the Body Collision Damage Repair Manual
for details of which parts have received anti±rust treatment.
Body Sealer
If the body sealer is damaged (peeling, cracks, etc.) during
the operation, replace it with new body sealer.
HINT: If body sealer gets on other parts, promptly wipe it
off with a clean cloth dipped in a grease, wax and silicone re-
mover.
Undercoat
If the undercoat is damaged during the operation apply new
undercoat.
HINT:
wCover the surrounding area with masking paper to
avoid applying undercoat where it is not needed.
wDo not apply undercoat to high temperature parts
such as the tailpipe, or to drive parts such as the drive
shaft.
Rust Inhibitor
After removing and re±installing hinges and outer panel
parts, apply rust inhibitor to the parts.
HINT: If rust inhibitor gets spilled on other parts, promptly
wipe it off with a clean cloth dipped in a grease, wax and sili-
con remover.
Touch±Up Paint
If a small scratch is made in the body surface, correct the
scratch using touch±up paint the same color as the body col-
or.
±
BODY General InformationBO±3
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HOW TO USE THIS SECTION
Components
When the removal and reassembly of a second system is
also required in order to remove and disassemble a certain
system, the components are laid out in the component dia-
gram as follows.
1. When it is necessary to remove and reassemble almostall the parts of the second system:
The component diagram of the second system is reduced in
size and included inside the large component diagram within
its own separate frame.
HINT: For more detail than is given in the second compo-
nent diagram in the separate frame, refer to the component
diagram of the applicable system.
Example:
BO±6
±
BODY General Information
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SRS AIRBAG
(See page AB±2)
The LEXUS SC300 is equipped with an SRS (Supplemental Restraint System)\
airbag.
Failure to carry out service operations in the correct sequence could cause the airbag system to deploy,
possibly leading to a serious accident.
When removal or installation of airbag parts and the yellow wire harness\
and connector for the airbag is
necessary, refer to the precautionary notices in the AB section before performing\
the operation.

Work must be started after 20 seconds or longer from the time the ignition switch is set to the LOCK
position and the negative (±) terminal cable is disconnected from the batte\
ry.
(The airbag system is equipped with a back±up power source so that if wor\
k is started within 20 se-
conds of disconnecting the negative (±) terminal cable of the batte\
ry, the airbag may be deployed.

To avoid erasing the memory of each memory system, never use a back±up power supply from
outside the vehicle.

Before repairs, remove the airbag sensors if shocks are likely to be applied t\
o the sensors during
repaires.

The front airbag sensor set bolt has been anti±rust treated. When the\
sensor is removed, always
replace the set bolt with a new one.

If the front airbag sensors, center airbag sensor or steering wheel pad ha\
ve been dropped, or if there
are cracks, dents or other defects in the case, bracket or connector, replace them with new ones.

Never use airbag parts from another vehicle. When replacing parts, repla\
ce them with new parts.

Do not expose the front airbag sensors, center airbag sensor or steering w\
heel pad directly to hot air
or flames.

The airbag system's wire harness is integrated with the cowl wire harness assembly. The wires for the
airbag wire harness are encased in a yellow corrugated tube. All the connector\
s for the system are
also a standard yellow color. If the airbag system wire harness becomes disconnected or the
connector becomes broken due to an accident, etc., repair or replace it as shown \
on page AB±20.

The steering wheel must be fitted correctly to the steering column with the\
spiral cable at the neutral
position; otherwise, cable disconnection and other troubles may result. \
Refer to page AB±14 of this
manual concerning correct steering wheel installation.

When removing the steering wheel pad or handling a new steering wheel pad, i\
t should be placed with
the pad top surface facing up. In this case, the twin±lock type connector lock lever should be in the
locked state and care should be taken to place it so the connector will not be damaged. (\
Storing the
pad with its metallic surface up may lead to a serious accident if the a\
irbag inflates for some reason.)

Grease should not be applied to the steering wheel pad and the pad should not \
be cleaned with
detergents of any kind.

Store the steering wheel pad where the ambient temperature remains below 93 C (200 F), without
high humidity and away from electrical noise.

Information labels are attached to the periphery of the airbag component\
s. Follow the notices.

When the ignition switch is at ACC or ON and the airbag warning light remains on, the cent\
er airbag
sensor assembly has detected a malfunction code. (See page AB±30).
BO±8
±
BODY General Information
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PREPARATION
EQUIPMENT
Part NameNote
Clip remover±
Torque wrench±
Hexagon wrench±
Torx driver±
Hog ring pliers±
TapeFor applying to the tip of the tools to avoid scratching parts or
painted surfaces of the body
Double±stick tape±
Adhesive tapeFor applying to the body surfaces around the parts to avoid
scratching painted surface
Instant adhesive±
Adhesive±
Cleaner±
Knife±
Shop rag±
Sealer gun±
Brush±
Putty spatula±
Glass plate or like objectFor mixing the adhesive on
Wooden block or like objectFor tying both piano wire ends
Plastic sheetFor placing between the piano wire and the safety pad to avoid
scratching the safety pad
LUBRICANT
ItemCapacityClassificationItemLitersUS qtslmp. qtsClassification
MP grease±±±±
±
BODY PreparationBO±9
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REMOVAL OF FRONT BUMPER
(See page BO±11)
1. REMOVE FENDER SPLASH SHIELD Remove fourteen screws, a bolt and the shield.
2. REMOVE NO. 2 ENGINE UNDER COVER Remove seven screws, five bolts and the cover.
3. REMOVE HEADLIGHT (Low Beam)
(a) Remove two nuts, a bolt and the headlight.
(b) Disconnect the connectors.
4. REMOVE UPPER BUMPER RETAINER (a) Remove the hood seal.
(b) Remove five screws and the retainer.
5. REMOVE BUMPER COVER ASSY (a) Remove six clips.
BO±12
±
BODY Bumper (Front Bumper)
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(b) Remove four clips.
(c) Remove the clip and ambient temperature sensor.
(d) Remove four nuts.
(e) Remove ten clips.
(f) Remove two bolts.
(g) Disconnect the connectors.
(h) Remove the bumper cover assy.
6. REMOVE REINFORCEMENT Remove six bolts and the reinforcement.
7. REMOVE UPPER REINFORCEMENT Remove eight bolts and the reinforcement.
8. REMOVE HEADLIGHT (High Beam)
(a) Remove two screws, a clip and the headlight.
(b) Disconnect the connector.
±
BODY Bumper (Front Bumper)BO±13
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REMOVAL OF REAR BUMPER
(See page BO±15)
1. REMOVE FOLLOWING PARTS:
(See steps 1 to 6 on pages BO±79 to 80)
(a) Floor mat
(b) Door striker cover
(c) Trim rear cover
(d) Trim front cover
(e) LH side cover
(f) RH side cover
2. REMOVE REAR COMBINATION LIGHT (a) Remove four nuts and disconnect the connectors.
(b) Remove the light.
3. REMOVE VENTILATION DUCT Remove three screws and the duct.
4. REMOVE REAR BUMPER COVER
(a) Remove sixteen clips and six nuts.
(b) Remove the cover.
BO±16±
BODY Bumper (Rear Bumper)
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HOOD
Fitting Adjustments
1. SUBSTITUTE BOLT WITH WASHER FOR CENTERINGBOLT
Since the centering bolt is used as the hood hinge set bolt,
the hood cannot be adjusted with it on. Substitute the bolt
with washer for the centering bolt.
HINT: Adjust the hood according to the following method.
2. ADJUST HOOD IN FORWARD/REARWARD AND LEFT/RIGHT DIRECTIONS
Adjust the hood by loosening the B bolts.
3. ADJUST FRONT EDGE OF HOOD IN VERTICAL DIRECTION
Adjust the hood by turning the A and B cushions.
4. ADJUST HOOD LOCK Adjust the lock by loosening the A bolts and the nut.
5. ADJUST REAR EDGE OF HOOD IN VERTICAL DIRECTION
(a) Remove the fender. (See page BO±93)
(b) Adjust the hood by increasing or decreasing the number
of shims as shown.
BO±18±
BODY Hood (Fitting Adjustments)
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