Lexus SC300 / Lexus SC400. Manual — part 992
OVERALL ELECTRICAL WIRING DIAGRAM
1
2
34
9
LEXU
S
SC
30
0
4
AC
C
IG
1
ST
1
AM
1
2
4
3
2
1
66
66
3H
12
1J
7
1B
4
66
6
66
3H
13
1
0
IK
1
2
5I
K
2
2I
K
2
5I
O
1
7I
O
1
1E
12
1I
82
1J
52
3A
4
3D
13
7I
E
2
3
B
W1
8
B
W1
7
B
W1
2
B
W1
6
B
W1
5
B
W
1
2
B
c2
6
B
c2
5
B
c
2
EB
E
A
IJ
12
IE
2
M
4
3
5
4
2
6
6E
B
1
8
IO1
2
IO1
5
A
4A
1
1A
2
1B
1
7B
6
B
1
0B
1
1B
2
2B
1D
4D
3D
2D
5D
3C
1C
1
6B
2B
1
3B
3A
1
0A
2A
1A
7
A
1
4B
3
B
1
B6
A
1
2
A8
A9
A
19
B
20
B
15
F
1
G
RR
–
RR
+
RL
–
RL
+
FR
–
FR
+
FS
S
FL
–
FL
+
GN
D
3
GN
D
2
PKB
MT
AS
T
SR
R
LY
B–R
AB
S
T
C
T
C
T
S
W
A
V–W
P–B
P–B
V
L
Y
B–R
R
L
L
V
P–B
B–
R
W–B
L–W
B–R
B–Y
R
V–Y
V–Y
W
W–L
R–Y
Y–L
L
B–R
W
Y
B–Y
P
Y–G
L–W
L–W
L
W–B
W–B
W–B
W–B
W –B
W
B
W–B
V–W
P–B
V
L
O–L
W–L
W
O
W
O
L–G
L–Y
L–Y
L–G
O
W
R
R –Y
V–Y
Y–L
22
1
1
11
2
2
1
4
4
1
11
62
2
6
23
B–Y
W
L
R
W
SF
R
SF
L
8B
RS
S
W–B
V–Y
WB
40
A
IG
S
W
I1
5
IG
N
ITIO
N
SW
AB
SM
OTOR
R E
LA
Y
ABSAC
TU
ATO
R
RELA
Y
T6
TD
C
L
( T
ot
al
D
iag
nos
tic
C
om
m
uni
c
at
ion
Li
nk
)
C3
CH
E
C
K
C
O
N
NE
CT
O
R
BA
T
T
E
R
Y
F9
FU
S
E
B
L
O
C
K
AB
S
AC
T
U
A
T
O
R
A7
A
BS
S
PE
ED
S
E
N
S
OR
F
R
ON
T
L
H
A8
ABS
SP
EE
D
S
E
N
S
OR
F
R
ON
T
R
H
A3
0
A
BS
SPE
ED
S
E
NS
O
R
RE
A
R
L
H
A3
1
ABS
SP
EE
D
S
E
N
S
O
R
RE
A
R
RH
ABS
W
A
R
N
IN
G
L
IG
H
T
[C
O
M
B
.
M
E
T
E
R
]
10
A
GA
U
G
E
10
A
DO
M
E
15
A
EC
U
–
IG
ABS
EC
U
(w
/oT
ra
ct
io
nC
o
n
tr
o
l)
AB
S
(A
n
ti–
Loc
k
B
ra
k
e
S
y
st
em
)
To
Park
ing
Bra
ke
SW
<2
1–2>
R–W
(SH
IE
LD
ED )
(SH
IE
LD
ED )
(SH
IE
LD
ED)
( SH
IEL
D
ED
)
(SH
IE
L
D
ED
)
BA
T
IG
1
W
TS
TC
D/
G
MR
R–
SR
60A
M A
IN
60A
AB
S
NO .1
100A
AM
1
120A
ALT
S
F
R
S
F
L
SR
R
A
ST
M
T
BM
G
N
D
3E
3
Po
w
e
r
S
our
ce
4
2
7
6
R
BS
A4
,
A
3
3
DC
B–R
C1
3
,
C1
4
FG
2
1
A2
2
,
A
2
3
AB
W–B
W–B
W–B
P–B
AB
S
EC
U
( w
/oT
ra
c
tio
nC
o
n
tr
o
l)
AB
S
A
C
T
U
A
T
O
R
A
B
S
W
A
R
NI
NG
L
IG
H
T
[C
O
M
B.
M
R
T
E
R
]
Fr
o
n
t
s
id
e
o
f
le
ft
fe
n
d
e
r
F
ront
si
de
of
ri
g
ht
fende
r
R
ig
h
t
k
ic
k
p
anel
C
4
D
A4
E
A5
GR
A
Y
GR
A
Y
1
3
1I
O
1
7
ST
P
G–W
G–W
From
Stop
Light
SW
<5–6
><
4–6>
B
2
1
34
1
2
3
45
6
1
2
3
4
10 LEXUS SC300
4
ACC
IG1
ST1
AM1
3
1J
7
1B
2
1J
8
1B
4
1H
8
1 A
3 A
5 A
6 A
2 A
4 A
7 B
4 B
9 B
8 B
10 B
15 B
13 B
14 B
12 B
5 B
6 B
17 IF1
16 IF1
20 IF1
19 IF2
8 IF2
20 IF2
12
8
2
3
10
9
M
M
3 IF1
4 IF1
9 IF2
1 IF1
18 IF1
2 IF1
10 IF1
3 IP2
16 IP1
1 IP2
2 IP2
9 IP1
3
1
2
6
5
4
9
9
4
5
6
2
16 B
2 B
1 B
3 B
12 IP1
13 IP1
M
M
1
3
W
W–
L
W
–
L
W–
L
W
W–
L
W–
L
P–
L
GR
P–
B
Y–
B
Y–
R
LG
–B
LG
GR
P–
B
Y–
B
Y–
R
LG
–
B
L–R
W
BR
–
Y
BR
–
B
O
L–G
R–
G
G–
Y
B–
W
B–
W
L–
W
R–
G
G
LG
–
R
LG
–B
LG
BR
–
Y
BR
–
B
O
L–
G
R–
G
G–
Y
B–
W
B–
W
L–
W
R–
G
G
LG
–R
LG
LG
–B
4
6
MVL
MHL
M+L
VSRL
VC
HSRL
E1
HSRR
VSRR
M+R
MHR
MVR
ACC
+B
SWB
SWE
SWLH
SWLV
SWRV
SWRH
SI
40A
IGSW
15A
ECU–B
7. 5A
RADIO
No. 2
I15
IGNITION SW
12
0A
A
L
T
10
0A
A
M
1
F 9
FUSE BLOCK
SELECT
SW
RH
LH
CONTROL
SW
UP
DOWN
RIGHT
LEFT
UP
DOWN
RIGHT
LEFT
B
E
MLH
MLV
MRV
MRH
R18
REMOTE CONTROL MIRROR SW
T
o
T
ilt
an
d
P
ow
e
r
T
el
es
c
opi
c
E
C
U
<
11
–2>
R 7 , R 8
REMOTE CONTROL MIRROR ECU
MV
MH
M+
VSRL
VC
HSRL
E1
E1
HSRR
VC
VSRR
M+
MH
MV
BATTERY
R16
REMOTE CONTROL MIRROR LH
R17
REMOTE CONTROL MIRROR RH
B
A
P–
L
Power
Source
Remote Control Mirror(w/ Memory)
3
4
UP
DOWN
RIGHT
LEFT
UP
DOWN
RIGHT
LEFT
B
E MLH MLV
MRV MRH
M
RH
LH
20 IF2
8 IF2
9 IF2
13 IP1
12 IP1
9 IP1
M
M
M
M
Instrument
panel brace
LH
IG
1D
10
1J
1
GND
11 B
LG
–
R
BR
–
B
R–
Y
LG
–
R
LG
–B
LG
LG
LG
–B
LG
–R
W–
B
W
–
B
W–B
W–B
8
9
10
11
2
3
1
3
2
2
1
3
1D
11
3
1H
L–G
LG–B
LG–R
LG
–
R
GR
GR
W–
R
R18
REMOTE CONTROL
MIRROR SW
R16
REMOTE CONTROL
MIRROR LH
R17
REMOTE CONTROL
MIRROR RH
2
1
3 4
5 6
7
8 9
10 11 12 13 14 15
16
1
2
3 4 5 6
B
A
REMOTE CONTROL MIRROR ECU
R 7
R 8
Remote Control Mirror(w/o Memory)
Left
kick
panel
IF
3
OVERALL ELECTRICAL WIRING DIAGRAM
1
2
34
11
LE
XU
S
S
C
300
4
AC
C
IG
1
ST
1
AM
1
2
1J
51
C
6
1I
82
1J
7
1B
51
C
1
1H
10
1B
4
1K
13
2
18
B
T
1
6B
a
1
1
2
BT
1
B
T
1
1
3
BT
1
1
3
IF
2
IF
1
IF
1
IF
1
7B
GN
D
2
10
A
UN
S
W
5A
E1
4A
AS
W
16
A
MS
W
17
B
VC
11
A
MR
Y
12
A
M2
3A
M1
8A
EC
U
E
9A
SO
1A
SI
2A
+
1B
IG
6B
P
18
A
BA
T
T
IF
IH
6B
U
1
47
68
32
14
11
19
1
3
12
1B
2
1H
15
1C
8
1K
7
4B
+B
2B
TE
M
+
11
B
TE
M
–
10
B
TI
M
+
6A
TE
S
3B
TI
M
–
7A
TI
S
M
M
10
1
5
6
3
4
1
W
B
BR
–
B
B–
R
R
L–
W
L–
W
R
GR
B–
R
L–
W
L–
Y
L–
B
R
6
5
BR
5
W –L
W–L
W
W
GR
G R
GR
B–R
R
R
R
L–W
L–W
W
R –B
W –B
Y
B
W
BR –B
BR –B
R–W
R–Y
R
P
V–Y
V–W
B
W
BR –B
BR–B
P
R
R–Y
BR
P–L
R–L
R–B
Y–R
R–W
BR
L–Y
L–B
BR
W–B
60A
M A
IN
120A
ALT
100
AA
M1
F9
F
U
SE
BL
O
C
K
40
A
IG
S
W
B–Y
G R
B–R
BR –B
BR
15
A
EC
U
–
IG
10
A
DO
M
E
From
A/T
Ind
icat
orS
W
<3–6
>
T
IL
T
A
N
D
PO
W
ER
T
E
L
E
SC
O
P
IC
EC
U
30
A
PO
W
ER
30
A
D
OOR
TE
L
E
S
C
O
LO
N
G
TIL
T
UP
TE
L
E
S
C
O
SH
O
R
T
TIL
T
DO
W
N
M
A
N
U
AL
SW
AU
T
O
SW
TIL
TPO
SIT
IO
N
SEN SO
R
TIL
TC
ON
TR
OL
MO
TO
R
TE
LE
SCO
PIC
POS
IT
IO
N
SEN
SO
R
TE
LE
SC
O P
IC
C O
N T
R O
LM
OT
O R
N o.
1
N o.
2
SET
D1
2
D
R
IVIN
G
P
O
S
IT
IO
N
ME
MO
R
Y
A
N
D
R
E
T
U
R
N
SW
(SH
IE
LD
ED )
(SH
IE
LE
DE
D)
B
A
TTE
R
Y
BR –B
T7
TE
L
E
S
C
O
P
IC
PO
SI
T
IO
N
S
EN
S
O
R
Po
w
e
r
S
our
c
e
P
o
w
e
r
T
ilt
and
P
o
w
e
r
T
elesc
opic
I1
5
IG
N
ITIO
N
SW
6
74
To
Unlo
ck
War
nin
gS
W
[IGN
IT
IO
NSW
]<4
–4
><
5–4
>
To
Door
Lock
Mot
or,
D oor
Unl
ock
D et
ection
SW
and
D oor
Open
D et
ection
SW
LH<
17–
4>
From
R em
ote
Cont
rol
Mirr
orE
C U
<1
0–4>
W
T1
0
A
,
T
1
1
B
C17
TIL
TA
N D
PO
WE
RTE
LE
SC
OP
IC
U N
IT
[CO
MB.
SW]
(C
ont
.
ne
xt
pa
ge
)
5
4
3
2
1
67
89
1
0
11
12
1
2
34
56
78
9
10
111
2
13
14
151
6
1
71
8
A
A
T1
1
T1
0
TI
L
T
A
N
D
P
O
W
E
R
T
E
L
E
SC
O
P
IC
EC
U
W–L
L
ef
t
ki
ck
pan
el
U
nd
er
the
as
h
tr
a
y
L
H
2
1
3
4
1
2
To
Park
in
gB
rake
SW
<21
–2>
G R
(M/
T)
(A/T
)
5
6
7
8
11 LEXUS SC300 (Cont’ d)
2
1
M
2
1
M
2
1
M
M
BK
Ba1
Ba1
Ba1
8 Ba1
3 Ba1
Ba1
4 Bb1
BL
17 BX1
18 BX1
18 BX1
5 Bb1
6 Bb1
7 Bb1
Ba1
7
1
2
1
4
2
3
2
3
2
2
2
1
3
6
5
1
1
3
1
3
C
D
C
D
C
C
C
C
C
C
C
D
D
D
D
D
D
D
D
D
D
C
D
D
D
D
C
M
2
1
M
1
2
D
C
C
2 Ba1
3
4
6
2
5
1
10
12
11
3
4
8
6
9
5
2
1
1
3
1
2
7
14
2
C
6
7
7
15
2
9
4
11
13
12
14
5
10
1
9
3
11
4
12
2
16
6
14
3
10
5
15
8
17
1
8
18
B–R
R
L–W
L–W
R
GR
B–R
R
L–W
R
L–W
V
V
V
W–B
W–B
BR–B
L–W
L–W
G–W
BR–B
BR–B
BR–B
BR–B
BR
–
B
BR–B
B
W
Y–B
BR
BR
BR
L–W
W–B
BR
BR
W–
B
W
–B
W
–
B
L
L–
B
V
LG
BR
BR
L–
Y
L–
R
L–
W
L–
W
L–
Y
L–R
V–
R
W–
B
R
B
V–
W
LG
–R
Y
BR
BR
BR
B
R
L–
W
L–
W
R
B–
R
B–
R
L–
W
V–
B
Y–
R
Y–
L
Y–
G
L–
R
L–
Y
L–
B
L
L–
W
L–
W
Y–
L
Y–
G
L–
R
L–
Y
L–
B
L
GR
G–
W
LG
V
V
V
Y–
G
V–
W
Y–
R
Y–
B
W
B
W–
B
W–
B
BR
–
B
W–
B
W
B
W–
B
BR
–
B
BR
–
B
BR
–
B
BR
–
B
BR
–
B
G–
W
B–
R
SSRS
PVCC
SSSR
RCL+
RCL–
SSFV
SSRV
SI
SO
GND
GND2
SGND
STOP
IG
SYSB P
SLD+
SLD–
FRV+
FRV–
RRV+ RRV–
+B2
+B
SLDF
SLDR
FUP
FDWN
RUP
RDWN
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