Lexus SC300 / Lexus SC400. Manual — part 997
OVERALL ELECTRICAL WIRING DIAGRAM
1
2
34
23
LE
XU
S
S
C
300
(C
ont
’
d)
5B
a
2
BK
M
21
12
7
W –B
W–B
L
L–B
P1
7
P
OW
E
R
S
E
A
T
M
OT
OR
(f
o
r
D
ri
v
e
r’
s
S
e
a
t
Si
d
e
C
o
n
tr
o
l)
FRO
NT
R EAR
SL
ID
E
U
n
der
the
cen
ter
p
illa
r
L
H
4B
a
2
L–W
L–W
FR
O
N
T
V
E
R
T
IC
A
L
U P
P1
3
P
O
W
E
R
S
EAT
M
O
T
O
R
(f
o
r
D
ri
ve
r’
s
S
e
a
t
F
ro
nt
V
er
tic
al
C
ont
rol
)
L–Y
DO W
N
L–R
M
21
56
R
E
AR
VER
T
IC
AL
U P
P1
5
PO
W
ER
S
EA
T
M
O
T
O
R
(f
or
R
ea
r
V
er
ti
cal
Co
n
tro
l)
Y–G
DO W
N
Y–L
M
21
98
L
U
M
B
AR
SU
PP
O
R
T
R E
LE
AS
E
P1
4
P
O
W
E
R
S
EAT
M
O
T
O
R
(f
o
r
D
ri
ve
r’
s
S
e
a
t
Lu
m
b
ar
S
upp
or
t
C
on
tr
o
l)
G–R
PUS
H
G
M
21
10
1
2
3
4
RE
CL
INI
NG
FRO
NT
P1
6
PO
W
ER
SE
AT
M
O
T
O
R
(f
o
r
R
e
clin
ing
M
ot
o
r
C
ont
rol
)
Y–R
R EAR
Y–B
M
21
11
P8
P
OW
E
R
S
E
A
T
C
ON
T
R
OL
S
W
(f
o
r
D
ri
v
e
r’
s
S
e
a
t)
1C
8
1B
2
4
6
L–W
W –L
W
30
A
DO
O
R
BA
T
T
E
R
Y
100A
AM
1
120A
ALT
F9
F
U
SE
BL
O
C
K
6
5
P
ow
er
S
eat
(w
/o
D
ri
v
ing
P
o
si
tiot
n
M
em
or
y)
P
ow
er
S
our
c
e
242
HOW T
O READ THIS SECTION
OVERALL ELECTRICAL WIRING DIAGRAM
Junction Block (the number in the circle is the
J/B No. and connector code is shown beside
it). Junction Blocks are shaded to clearly
separate them from other parts (different
junction blocks are shaded differently for fur-
ther clarification.).
Example:
Indicates related system.
Indicates the wiring harness and wiring har-
ness connector. The wiring harness with male
terminal is shown with arrows
Outside numerals are pin numbers.
is used to indicate different wiring and
connector, etc. when the vehicle model, engine
type, or specification is different.
Indicates a shielder cable.
Indicates and located on ground point.
The same code occuring on the next page
indicates that the wire harness is continuous.
System Title
Indicates the wiring color.
Wire colors are indicated by an alphabetical
code.
B
= Black
L = Blue
R = Red
BR = Brown
LG = Light Green V = Violet
G = Green
O = Orange
W = White
GR = Gray
P = Pink
Y = Yellow
The first letter indicates the basic wire color and the
second letter indicates the color of the stripe.
Indicates the connector to be connected to a
part (the numeral indicates the pin No.)
The position of the parts. is the same as shown
in the wiring diagram and wire routing.
Indicates the pin number of the connector.
The numbering system is different for female
and male connectors.
The numbering system for the overall wiring
diagram is the same as above.
Indicates a Relay Block. No Shading is used
and only the Relay Block No. is shown to distin-
guish it from the J/B.
243
244
Rear Window Defogger
and Mirror Heater
Remote Control Mirror
Seat Heater
Shift Lock
SRS AIRBAG
Starting
Taillight and
Stop Light
Theft Deterrent and
Door Lock Control
Turn Signal and Hazard
Warning Light
Wiper and Washer
Wireless Door Lock
Remote Control
Horn
Ignition
Illumination
Interior Light
Liquid Crystal Inner
Rear View Mirror
Moon Roof
Power Seat
(Driver’s)
Power Source
Power Window
PPS (Progressive
Power Steering
Radio and Player
ABS and
Traction Control
Automatic
Air Conditioner
Auto Antenna
Back–Up Light
Cellular Mobile
Telephone
Charging
Cigarette Lighter
Combination Meter
Cruise Control
Headlight and Light Auto
Turn Off (for USA)
Headlight
(for Canada)
ECT and
A/T Indicator
4–2
16–2
7–2
3–2
21–2
3–8
14–4
18–2
19–4 (w/o CD Player)
20–8 (w/ CD Player)
9–2
8–2
4–7 (for USA)
5–7 (for Canada)
11–2
12–3
11–5 (w/ Driving
Position Memory)
11–7
12–1
1–5
13–2
6–2
15–2
14–2
13–2
17–7
7–3
17–2
15–3
1–3
15–2
Power Tilt and
Power Telescopic
12–2
Power Seat (Passenger”s
and Electric Tension Header
5–2
2–2
Cornering Light
ABS (Anti–Lock
Brake System)
22–2
Engine Control
Unlock and Seat
Belt Warning
1–2
23–2 (w/o Driving
Position Memory)
1 23–1
19–2 (w/o CD Player
20–2 (w/ CD Player
14–3
10–2 (w/ Memory)
5–7 (w/o Memory)
4–3 (for USA)
5–3 (for Canada)
4–5 (for USA)
5–5 (for Canada)
OVERALL
ELECTRICAL WIRING DIAGRAM
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