dimensions LEXUS SC400 1991 Service Owner's Manual

BO6848
E-e
1,304
(51.34) 1,500
(69.06)F-fVehicle Dimensions Left
eRight
G-g
1,511
(59.49) H-h
1,511
(59.49) I-i
1,083
(42.64) 1,363
(53.66)J-j
1,503
(59.17)K-k
E-f
or
e-F
1,536
(60.47) 1,577
(62.09)E-g
or
e-G
1,694
(66.69)E-h
or
e-H
1,587
(62.48)E-j
or
e-J
1,909
(75.16)F-j
or
f-J
HINT: For symbols, Capital letters indicate
right side of vehicle, small letters indicate
left side of vehicle (See from rear).
F-k
or
f-K
1,945
(76.57) G-h
or
g-H
1,665
(65.55) H-i
or
h-I
1,568
(61.73) 1,595
(62.80)H-j
or
h-J
1,490
(58.66)
mm (in.)J-k
or
j-K
(Three-Dimensional Distance)
Hote dia.
Name
Rocker panel adjoining portion mark
Rocker panel adjoining portion mark
Roof side rail adjoining portion mark
Quarter panel adjoining portion mark
Quarter panel adjoining portion mark
Symbol
G, g
H, h
I, i
J, j
K, k
Hole dia.
10 (0.39) screw
10 (0.39) screw
Name
Roof panel/Front body pillar adjoining portion
Cowl top panel/Front body pillar adjoining portion
Front door hinge installation nut
D, d Front door hinge installation nut
Front body pillar adjoining portion mark
Front body pillar adjoining portion mark
Symbol
A, a
B, b
C, c
E, e
F, f
BODY OPENING AREAS (Side View)
BODY DIMENSIONSDI-8
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BO6849
mm (in.)
(Three-Dimensional Distance)
Hole dia.18 (0.71)
Name
Opening trough/Lower back panel adjoining portion
Upper back panel center mark
Rear floor side member standard hole
Symbol
P, pQ
R, r
Hole dia.
Name
Roof panel/Quarter panel adjoining portion
Quarter panel/Upper back panel adjoining portion
Quarter panel/Upper beck panel adjoining portion
Opening trough/Quarter panel adjoining portion
Symbol
L, l
M, m
N, n
O, o
BODY OPENING AREAS (Rear View)
BODY DIMENSIONSDI-9
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mm (in.)
BO6850
BO6850
(Three-Dimensional Distance) (Three-Dimensional Distance)
SymbolName Hole dia. Symbol Name
Hole dia.
A, a Steering gear box installation hole
front 12 (0.47)
E, eLower arm installation hole-front
25
y16
(0.98 y0.63)
B, b Upper arm installation hole front 14 (0.55) F, f Lower arm installation hole rear25
y16
(0.98 y0.63)
C, c Suspension crossmember installation
hole front - lower
15 (0.59) G, g Upper arm installation hole rear
14 (0.55)
D, d Steering gear box installation hole-
lower 12 (0.47)
H, hSuspension crossmember installation
hole rear-lower
RH 15
y13 (0.59 y0.51)
LH 13 (0.51)
SUSPENSION CROSSMEMBER DIMENSION DRAWINGS
BODY DIMENSIONSDI-10

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mm (in.)
BO6851
BO6851
(Two-Dimensional Distance) (Three-Dimensional Distance)
SymbolName Hole dia. Symbol Name Hole die.
I, i Suspension crossmember installation
hole front-lower
18 (0.71) L, lSuspension crossmember installation
hole rear-lower 18 (0.71)
J, j Lower arm installation hole-front 30
y16
(1.18 y0.63) M, mSuspension crossmember installation
hole rear-lower
18 (0.71)
K, k Lower arm installation hole rear 30
y16
(1.18 y0.63)
Suspension Crossmember (Cont'd)
BODY DIMENSIONSDI-11
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mm (in.)
BO6852
BO6852
(Two-Dimensional Distance) (Three-Dimensional Distance)
SymbolName Hole dia.
Symbol Name Hole dia.
A, a Strut bar installation hole inner
14 (0.55)F, fLower arm installation hole front 26
y14
(1.02 y0.55)
B, b Differential carrier installation nut 12 (0.47) nut G, gRear suspension member standard
hole
20 (0.78)
C, c Rear suspension member standard
hole 20 (0.78)
H, hLower arm installation hole rear 26
y14
(1.02 y0.55)
D, d Lower arm installation hole front 26
yl4
1.02 y0.55 I, i
Upper arm installation hole rear 14 (0.55)
E, e Upper arm installation hole front 14 (0.55)
Suspension Crossmember (Cont'd)
BODY DIMENSIONSDI-12
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Front
Fender Area
Area from the Front Fender Apron
to the Cowl Side Member


Before repairing the body, remove the airbag sensors if, during repair, shocks are likely to, be applied
to the sensors due to vibrations of the body or direct tapping with tool\
s or other parts.

Do not expose the airbag sensors or the steering wheel pad directly to h\
ot air or flames.
NOTICE:
1) The maximum ambient temperature tolerance is 120
°C (248°F) for the front airbag sensor, 105°C
(221
°F) for the center airbag sensor assembly and 93°C (200°F) for the steering wheel pad. If it is
possible that the ambient temperature may reach or exceed the temperatur\
e limit, remove the sen- sors and the steering wheel pad from the vehicle or protect them with a \
hot insulation material be-fore starting work.
2) Prior to welding, remove adjacent airbag sensors or the steering wheel p\
ad from the vehicle or protect them with fire-proof covers.

If the front fender or periphery of the vehicle is damaged, visually ins\
pect for damage to the front air-
bag sensor using the inspection procedures described in section AB of th\
e repair manual for the rele-
vant model year.
Also check that the dimensions of the body where the front airbag sensor\
is installed match those in
the body dimension drawings.
(The airbag may malfunction; or may not work, if the mounting angle or \
dimensions of the sensor
mount are not correct.)

If the vehicle is damaged, visually inspect for damage to the steering w\
heel pad using the inspection
procedures described in section AB of the repair manual for the relevant\
model year.

When removing the steering wheel pad or handling a new steering wheel pa\
d, keep the pad upper
surface facing upward. Also, lock the lock lever of the twin lock type c\
onnector at the rear of the pad
and take care not to damage the connector.
(Storing the pad with its metallic surface up may lead to a serious acc\
ident if the airbag inflates for
some reason.)

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

Be careful not to let painting materials contact the airbag sensors.

Information labels are attached to the periphery of the airbag component\
s. Follow the NOTICES.
INTRODUCTIONIN-7
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Shift Lock ECU
Tilt and Power
Telescopic ECU
Airbag ECU
Cruise Control ECU Engine ECUABS and Traction ECU
(w/ Traction System) or
ABS ECU
(w/o Traction System)
Theft Deterrent and
Door Lock ECU
(w/ Traction System)
Traction ECU
Remote Control Mirror ECU A/C Control Amplifier
PPS ECU
Engine Cooling Fan ECU
Component to be aligned
Section of repair manual
for relevant model year
Front Wheels Suspension and Axle (SA) section
Rear Wheels Suspension and Axle (SA) section
Propeller Shaft Propeller Shaft (PR) section
2. BRAKE SYSTEM
The brake system is one of the most important safety components. Always \
follow the directions and
notes given in section BR of the repair manual for the relevant model ye\
ar when handling brake sys-
tem parts.
NOTICE: When repairing the brake master cylinder or TRAC system, bleed t\
he air out of the TRAC
system.
3. DRIVE TRAIN AND CHASSIS
The drive train and chassis are components that can have great effects on the running performance
and vibration resistance of the vehicle. After installing components in \
the sections listed in the table
below, perform alignments to ensure correct mounting angles and dimensions. P\
articularly accurate
repair of the body must also be done to ensure correct alignment.
HINT: Correct procedures and special tools are required for alignment. Alway\
s follow the directionsgiven in the repair manual for the relevant model year during alignment \
and section DI of this manual.
4. ECU (ELECTRONIC CONTROL UNIT)
Locations of ECUs
INTRODUCTIONIN-8
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1. DISCONNECT INTERMEDIATE SHAFT
(a) Position the front wheels facing straight ahead.
(b) Using the seat belt of the driver's seat, fix the steering wheelso that it does not turn.
(c) Place matchmarks on the intermediate shaft and control valve shaft.
(d) Loosen the bolt on the upper side of the intermediate shaft,
remove the bolt on the lower side and disconnect the
intermediate shaft.
2. DISCONNECT TIE ROD ENDS
(a) Remove the cotter pin and nut.
(b) Using SST, disconnect the tie rod end from the knuckle arm. SST 09628±62011
3. CONNECT INTERMEDIATE SHAFT
(a) Set the gear housing so that it matches the dimensions shown below, with the gear housing at the center point.
±
STEERING POWER STEERINGSR±143
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(c) Place matchmarks on the intermediate shaft and controlvalve shaft.
(d) Loosen the bolt on the upper side of the intermediate shaft, remove the bolt on the lower side and disconnect the
intermediate shaft.
2. DISCONNECT TIE ROD ENDS
(a) Remove the cotter pin and nut.
(b) Using SST, disconnect the tie rod end from the knuckle arm. SST 09628±62011
3. CONNECT INTERMEDIATE SHAFT
(a) Set the gear housing so that it matches the dimensions shown below, with the gear housing at the center point.
(b) Align matchmarks on the intermediate shaft and control valve
shaft and connect them.
Torque: 35 N Vm (360 kgf Vcm, 26 ft Vlbf)
SR±146±
STEERING POWER STEERING
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6. COVER STEERING WHEEL PAD WITH CARDBOARDBOX OR TIRES
Covering Method Using Cardboard Box:
Cover the steering wheel pad with the cardboard box and
weigh the cardboard box down in four places with a at least
196 N (20 kgf, 44 lbf).
Size of cardboard box:
Must exceed the following dimensions±
x = 460 mm (18.11 in.) When dimension y of the cardboard box exceeds the
diameter of the disc wheel with tire the steering wheel
pad is tied to±
x = 460 mm (18.11 in.) + width of tire
y = 650 mm (25.59 in.)
NOTICE: If a cardboard box smaller than the size speci-
fied is used, the cardboard box will be broken by the
shock of the airbag deployment.
Covering Method Using Tires:
Place at least 3 tires without disc wheel on top of the disc
wheel with tire to which the steering wheel pad is tied.
Tire size: Must exceed the following dimensions± Width 185 mm (7.28 in.)
Inner diam 360 mm (14.17 in.)
CAUTION: Do not use tires with disc wheels.
NOTICE: The tires by marked by the airbag deployment,
so use redundant tires.
7. AIRBAG DEPLOYMENT
(a) Connect the SST red clip to the battery positive (+) terminal and the black clip to the battery negative (±) terminal.
(b) Confirm that no±one is within 10 m (33 ft) of the disc wheel the steering wheel pad is tied to.
(c) Press the SST activation switch and deploy the airbag. HINT: The airbag deploys simultaneously as the LED of the
SST activation switch lights up.
RS±26±
SUPPLEMENTAL RESTRAINT SYSTEM STEERING WHEEL PAD AND SPIRAL CABLE
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