1991 LEXUS SC400 fuse

OVERALL ELECTRICAL WIRING DIAGRAM
1234
6 LEXUS SC300
2
3A
6
2
1F
81H 91D61H10 1E 11
3D
4
2 1 2
12
1 2
1 2
1
6 22
12
11
3
7 11 A
12 B
4BX1 17 IP1
25 Bc 1
1F
6
1J
1
IF 1
To Int egr ation Relay
< 5±3> < 4±3>
1 2
5
1B
W±B
W± B
RR
W
W±B
W±B
W± B
W± B
BR±WR±W R±W R
RR
R
R
R
R
RR
R
R
RR
R± W R±W R± W
R±W
R± W R± W
R± W R
R±W
W
R
10A
DOME
60A MAINF9
FUSE BL OCK
VANITY LI GHT
V5
LH
V6
RH
P20
PERSONAL
LIGHT
LH
RH
ON
OFF
DOOR
I14
IGNITION KEY
CY LI NDER LI GHT
S1 1
ST EP LI GHT
D5
DOOR COURTESY
LIGHT LH
L7
LUGGAGE COMPARTMENT
LIGHT
D6
DOOR COURTESY
LIGHT RH
To Door Lock Motor,
Do or Unl oc k De t ec t i on SW an d
Do or Ope n De t ec t i on S W LH
< 17±5>
From CD Automatic Chenger
< 20±1>
4o Door Lock Motor,
Do or Unl oc k De t ec t i on SW an d
Do or Ope n De t ec t i on S W RH
< 17±5>
To Int egr ation Relay
< 5±3> < 4±3>
L6
LUGGAGE COMPARTMENT
LIGHT SW
OPEN DOOR WARNING
LI GHT [ COMB. MET ER]
BATTERY
Power
Source Interior Light
W
From Theft Deterrent
and Door Lock ECU
< 17±2> R±W
C12 , C14
BA OPEN DOOR WARNI NG LIGHT
[COMB. METER]
10 11 12 13 17 18 19 20 21 12345 6789
14 15 16
17 18
1 2345 6789 10
23
22
21
20
19
15
14
13
12
11 16 B
A
C12
C14
Lef t kic k panel
W± B
(
w/oMoonRoof )
( w/ Moon Roof )
WhereEverybodyKnowsYourName

1234
7 LEXUS SC300
4ACC
IG1
ST 1
AM1 2
1J
7 1J
5
1B
4 1E
72
74
6 1
2
4
5
3
2
1C
4
1A
7
2 3EB 6
5 12 IQ1 10 IQ1
11 IQ1
10 IG1 23 I G1
IG2
8
IG2 9
IE1
9
IQ23
IQ2 13
IQ2 8
1H
11 1H 7
4
4 4
4
4
12
43
1E
19 1E 14 1C 31A4
3A
1
1J
1 3G
3
1E
18
IF
BM EA 10
3D
6
1K
2 3
23 B
16 A 17 A
5756
6
3
10 8 9
4 WW
W± RR± B
R±W G±Y
G±B W± R
G±R
WWW±B
G±R
W±RR±B
R± W
R± WR±B
W± B
G±R B±Y
W
R± W R±B
R± W
R±B
R± B
R±W
W± B
R±B
R±W
G±Y G±Y G±B
G±B
W±B
W±B
W±B
W±B
W±B
W± B
W± B
W±B W±B G±B
G±Y
WW
W±L W
W
B± Y
60A MAIN
100A AM1
120A ALT
I15
IGNITION SW 20A
TURN
25A
HA Z± HORN
TURN SIGNAL FLASHER
BATTERY
F7
F RONT T URN S I GNA L
LIGHT LH
R1 0
REAR TURN SI GNAL LI GHT LH
[REAR COMB. LIGHT LH]
R11
REAR TURN SIGNAL LIGHT RH
[ REAR COMB. LIGHT RH] F8
F RONT T URN S I GNA L
LIGHT RH C1 6
TURN SI GNAL SW
[COMB. SW]
TURN SIGNAL INDICATOR
LIGHT[ COMB. METER]
OFF
ON B1 F B2TLTBTR
H7
HA ZA RD SW
B
FOD FOE
FOG FOF
1I
1
1I
2
55 55
2 1 5
3
18 IE1
17 I E1
1 2 1
2
EA
8
11
10
W± G
G± R
G± R
W± B
W± B
W±B R±G
P± Y
R±G
P± Y R± YTo I ntegrat ion Relay
<5±2><4±2>
CORNERI NG
LIGHT RELAY
C16
CONE RI NG L I GHT
SW[COMB. SW]CORNERI NG LI GHT
C6
LH C7
RH
F9
FUSE BLOCK
Power
Source
Cornering Light Turn Signal and Hazard Warning Light40A
IGSW TURN SIGNAL INDICATOR LIGHT
[COMB. METER]
12 34 56 78
9 10 1112 13 14 1516 1718 17 18
1 2345 6789 10
23
22
21
20
19
15
14
13
12
11 16
AB
C13 C14
C13 A , C14 B
Front side of
r ight fender Fr ont side of
left fender Bac k panel
c enterFront side of
r ight fenderLeft kick
panel
6
5
WhereEverybodyKnowsYourName

OVERALL ELECTRICAL WIRING DIAGRAM
1234
8 LEXUS SC300 (
Cont . ne xt pa ge )
4 ACC
IG1
ST1
AM1 2
1J
7 66 66 66 66
21J
5
1B
4 6666
66 66 66 2 1I
8
4 3 5 4
2
4 3
2
1 4
3
2
1 6
4
3
1
71124 1F 2F 3F
AABA A A B
C
B
A
B
A
A
A
A
A
A
BAABAABBB A A A A A B GGGF F
F
M
15 2 12 1 25 21 24 10 1 9
1 1326128 7 222 13 5 18 16 17 4 4 7IE2
1IO1
2 3
1 2
1
6
EB EA IJ M
2Bc2
12 IE2
H
4H 5H6H1H 2H3
I
2I 1J1
SFR SFL SRR SRL AST MT BSR BSM BSA
BS BM GND E2 PR VC SRC SMC SAC
MTT
BT M
EM2
BBBBBBBC
C
C
C
C
C
C
C
C
C
C
B
B
C 9IO1
EB1
6
10 IO1
3BW1 8BW1
6Bc2 5Bc2 2BW1 6BW1
7BW1
3B
1
221 1 112 2 320 741361511 7 81214 510
15 5 14 3 8 6 17
SFR SFL SRR SRL AST MT GND1 GND2 GND3 FL+ FL± FSS FR+ FR± RL+ RL± RSS RR+ RR± ALT LVL1 PKB W
B± Y
B±R
B±R R
VL
P± B
V±W R±B P
Y± B
LG
LG±B P± L
P± G
V±R
L
GR B
R± W
W±B (
SHIELDED )(
SHI ELDED)
B± R B± R
W± B L± Y G
V±Y
R± W
W± B MTT SR MR TMR E2 PR VC SRC SMC SAC TSR R± BAT I G STPTS WA TC D/G ABSO
RLORRO
FL OFRO
BRFA THFA
BRCBRP
TRCO NL PW±LR
Y
W
W
L±W B±R
R±B
L
Y R
V±Y
V±Y
V±Y
W
B±Y
R
R±W R
B±R
B±R
R
G± W
G±W B±Y
L±Y
R± B
Y
G
( SHI ELDED )
W
B
R
V± Y
V
V± W R± W R±W R±W
B±R V±Y W
W± L
V L
P±B
W± B W± B W± B
L±W Y± G
P± B P
B± Y
Y
L±W
L
W± B
W± B W± B
W
B
O±L
W± L W
O
O
W
W
O
L±GL±Y
L±G
L±Y Y±G Y±G
B
R±W
LR±W
B±Y V±R P± GP± L
LG±B LG
Y±B
P
R± B R±B V± W B±R B±R
V± Y
W±B W±B
(SHIELDED )
(
SHI EL DED )
(
SHI ELDED )I15
IGNITION SW
40A
IGSW
4 2 1456
R
T5
TRACTION PUMP
A N D MOT ORTRACTI ON BRAKE
ACTUATOR
ABS AND T RACTI ON ECU
60A MAIN
30A ABS NO. 2 60A ABS
NO. 1100A AM1
ABS
ACTUATOR
RELAY
ABS MOTOR
RELAY
TRACTION MOTOR
RELAY
TRACTION BRAKE
MAI N RELAY
10A DOME
6 BATTERY AB S A CT UA TOR
(SHI ELDED ) W± B
A7
ABS SPEED SENSOR
FRONT LH
A8
ABS SPEED SENSOR
FRONT RHA30
ABS SPEED SENSOR
REAR LH
F9
FUSE BLOCK
B±Y
From Stop Light
SW<4±6><5±6>
5BW1
A31
ABS SPEED SENSOR
REAR RH
From Alternator
º Lº < 1±2>
Power
Source ABS and Traction Control
B±R15A ECU±IGY
23 22 16 9 20 10 19
T3 ,T4
FG
(
SHI ELDED )
A4 , A5 , A6
HJ I A2 4 A , A25 B , A2 6 C
W
120A ALT
R
Fro nt s id e of
left fenderRight kick panel
Fr ont side of
right f ender
1
3
WhereEverybodyKnowsYourName

OVERALL ELECTRICAL WIRING DIAGRAM
1234
9 LEXUS SC300
4ACC
IG1
ST 1
AM1 2
4 32
1
66 66
3H
12
1J
7
1B
4 666
66
3H
13 10IK1 25IK2 2IK2
5IO1 7IO1 1E
12 1I 82
1J
52
3A
4
3D
13 7IE2
3 BW1 8 BW1 7 BW1 2 BW1 6 BW1 5 BW1
2 Bc2 6 Bc2 5 Bc2
EB EA I J 12 IE2
M
4 3
5 4
2
6 6EB1
8 I O1 2 I O1
5A 4A 11A 21B 17B 6B 10B 11B 22B
1D 4D 3D 2D 5D
3C 1C16B 2B 13B 3A 10A 2A 1A 7A 14B 3B
1B6A12A8A9A 19 B 20 B
15
F 1
G
RR±
RR+
RL ±
RL+
FR±
FR+
FSS
FL ±
FL+
GN D3
GND2
PKB
MT
AST
SRR LY
B± R
ABS TC TC TS WAV±W
P± B
P±B VL
Y
B±R
R
L
L V
P±B
B±R
W±B
L±WB±R B±Y
R
V±Y
V± Y
W
W±L
R±YY± LL
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
VL
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
221 1 112 2
14 4 111622
6 23
B±Y
W
L
R
W
SFR SFL
8BRS S
W± B V± Y
WB
40A I GSW I15
IGNITION SW
ABS MOTOR
RE LA Y ABS ACTUATOR
RELAY
T6
TDCL
(
Tot al Diagnos tic
Communic ation Link )
C3
CHECK CONNE CT OR
BATTERY F9
FUSE BL OCK
ABS ACTUATOR A7
ABS SPEED
SENSOR FRONT LHA8
ABS SPEED
SENSOR FRONT RHA3 0
ABS SPEED
SE NS OR RE A R L H A31
ABS SPEED
S ENSOR RE AR RH
ABS WARNING LIGHT
[COMB. METER]
10A
GAUGE
10A
DOME
15A
ECU±I G
ABS ECU (
w/oTractionControl )
ABS(
Anti±Lock Brake System )
To Par ki ng Brak e SW
< 21±2> R±W
( SHI ELDED )
( SHI ELDED )
( SHI ELDED )
(
SHIELDED ) (
SHI ELDED )
BAT
IG1
W
TS
TC
D/G
MR
R±
SR
60A MAIN
60A ABS
NO. 1
100A AM1
120A ALT
SFR SFL SRR AST MT
BM GND 3E
3
Power
Source4
2
7
6
R
BS
A4 , A33DC
B±R
C13 , C14 FG 2
1
A22 , A23 AB
W± B
W± B
W± B
P±B
ABS ECU
(w/oTractionControl )
ABS ACTUATOR ABS WARNING LIGHT
[COMB. MRTER]
Fro nt s id e of
left fender Fr ont side of
right f enderRight k ic k panel
C
4
D
A4
E
A5 GRAY
GRAY 1
3
1IO17
STP
G±W G±W
From Stop Light SW
< 5±6> < 4±6>B
2
1
34
1
2
3
45 6
WhereEverybodyKnowsYourName

1234
10 LEXUS SC300
4ACC
IG1
ST1
AM1 3
1J
7 1B
2
1J
8
1B
4 1H
8
1A
3A 5A 6A 2A 4A
7B 4B
9B 8B 10B 15B 13B 14B 12B 5B 6B 17 IF1 16 IF1
20 IF1
19 IF2 8 I F2 20 I F2 12823109
M
M
3IF1 4IF1 9IF2 1IF1 18IF1 2IF1 10IF1 3IP2 16IP1 1IP2 2IP2 9IP1
3126549 94562 16 B
2B
1B
3B
12 IP1
13 IP1
MM
13
W
W± L W± LW± L
W
W± L
W± LP± 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± GG
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
RA DI O
No. 2
I15
IGNITION SW
120A ALT
100A AM1
F9
FUSE BL OCK SELECT
SW
RH
LH CONTROL
SW
UP
DOWN
RI GHT
LEFT
UP
DOWN
RI GHT
LEFT BEMLHMLVMRVMRH
R1 8
RE MOTE CONTROL MI RROR SW
To Tilt and Power
Telesc opic ECU
< 11±2>
R7 , R8
REMOTE CONT ROL MI RROR E CU
MV MH M+ VSRL VC HSRL E1 E1 HSRR VC VSRR M+ MH MV
BATTERY
R16
REMOTE CONTROL MIRROR LHR17
REMOTE CONTROL MIRROR RH
BA
P± L
Power
Source
Remot e Cont rol Mirr or
(
w/ Memor y )3
4
UP
DOWN
RIGHT
LEFT
UP
DOWN
RIGHT
LEFTB E MLH MLV MRV MRH
M
RH
LH
20 IF2 8 IF2 9 IF2
13IP1 12IP1 9IP1 MM MM Instrument
panel br ace
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±BW±B
89101123
132 213 1D
11 3
1H
L±G
LG±B
LG±R
LG±R GR
GR
W± R
R1 8
REMOTE CONTROL
MIRROR SW
R1 6
REMOTE CONTROL
MIRROR LH R1 7
RE MOTE CONTROL
MI RROR RH 2
134567
8 9 10 11 12 13 14 15 16 12
3456
BA
REMOTE CONTROL MIRROR ECU
R7 R8
Remote Control Mirror (
w/o Memory )
Left
kick
panelIF
3
WhereEverybodyKnowsYourName

OVERALL ELECTRICAL WIRING DIAGRAM
1234
11 LEXUS SC300
4ACC
IG1
ST1
AM1 2
1J
51C 6
1I
82
1J
7
1B
51C 1
1H
10
1B
4 1K
13 2
18 BT1 6Ba1
12 BT1 BT1 13 BT1 13 I F2 IF1 IF1 I F1
7B
GN D2
10 AUNSW
5AE1
4A ASW
16 A MSW
17 B
VC
11 A MRY
12 A M2
3A M1
8A ECUE
9A SO
1A SI
2A +
1B
IG 6B
P 18 A
BATT
IF IH 6BU1 47
68
3214
11
19 13 12 1B
2
1H
15
1C
8
1K
7
4B +B 2B
TEM+ 11 B
TEM±
10 B TIM+
6ATES
3B TIM±
7A TI S
M
M
10 1 5 6 3 4 1
WB
BR±B
B±R
R
L±W L±W R
GR
B±R
L±W L±Y L±B
R 6
5
BR 5W± L
W±L W
W
GR GR GR B±R
RR R
L±W
L±W
W
R± B
W± B
Y
B
W
BR±B
BR±B
R±WR±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 MAIN
120A ALT 100A AM1F9
FUSE BLOCK 40A
IGSW
B±Y
GR B±R
BR±B
BR15A
ECU± I G 10A
DOME
Fr om A/ T Indicat or SW
< 3±6>
TI L T AND POWER TELESCOPI C ECU30A
POWER
30A
DOOR
TEL ESCO
LONG TILT
UP
TEL ESCO
SHORT TILT
DOWN
MANUAL SW AUTO SW
T I LT POSI TI ON
SENSOR
TI L T CONTROL MOTOR
TELESCOPIC POSITION
SENSOR
TE LE SCOP I C CONT ROL MOTOR No . 1
No . 2
SET
D1 2
DRIVING POSITION
MEMORY AND RETURN
SW
(
SHI ELDED )(
SHI ELEDED)
BATTERY
BR±B
T7
TELESCOPIC
POSI TI ON SENSOR
Power
Source Power Tilt and Power Telescopic
I15
IGNITION SW
6 74
To Unlock Warning SW
[IGNITION SW]< 4±4> < 5±4>
To Door Lock Mot or,
Door Unloc k Detec tion SW and
Door Open Detec tion SW LH< 17±4>
From Remote Cont rol Mirr or ECU
< 10±4> W
T10 A , T11 B
C17
TI LT AND POWER TELESCOPIC UNIT
[COMB. SW]
(
Cont . ne xt pa ge )
5
4
3
2
1
6789101112
12 34 56 78
9 10 1112 13 14 1516 1718
AA
T11 T10
TIL T AND POWER
TELESCOPI C ECU
W±L
Left kick panel Under t he ashtray LH2
1
3
4 1
2
To Parking Brake SW
< 21±2>
GR
( M/T )
(
A/T )
WhereEverybodyKnowsYourName

OVERALL ELECTRICAL WIRING DIAGRAM
1234
12 LEXUS SC300
2
1B
5
1F
9 2
1F
8
1I
15
6 237
2 1
4 11 1B
2
1D
91J 21I 7
10 8 9 5 1 4
11 IF2 3 IF2
11 IP1 3 IP1 2 IP1
M
12
M
12
1D
10 1J 1
1F
6
IF
51
42
3
W± B W±B
WW
W± L
Y
Y
5213
4
RR
L±W L±RL±Y
L±B
W±B
R
W±B G± Y
R±L
G±W
L
L
L
Y±R W± L
W
W±B R
G± Y
R
G±Y R± L
G± W
L G±W
R±L
W± B
W± B
10A
DOME
W± L W
1 2
R
60A MAIN
120A ALT
100A AM1
F9
FUSE BLOCK
D4
DAY/NI GHT
SHIFT SW INNER
MIRROR
M2
MOON ROOF CONTROL REL A Y
M3
MOON ROOF
CONTROL S W
POWER WI NDOW
RE LA YP5
POWER WINDOW MASTER SW AND
DOOR LOCK CONTROL SW LH
BATTERY
To Unlock Warning
SW<4±4><5±4>
From Theft Det err ent and
Door Lock ECU< 17±3>
P7
POWER WI NDOW
MOTOR RH
P6
POWER WI NDOW
MOTOR LH P4
POWER WI NDOW
CONTROL S W RHL
L 30A
POWER
POWER
MA I N RE LA Y
W±B
Power
Source Liquid Crystal
Inner Rear
View Mirror
Moon Roof Power Window
OP EN
CL OS E
UP
DOWN1
7 4589
8BZ1 7BZ1 6BZ1 2BZ1V
P
P±L
V± W NO. 2 NO. 1
M
4BZ1 5BZ1
B± Y
W± B
45
1326
B
6
BR
LG W
W± Y
B
W± B W± B
W±B
1BZ1 12
L
M4
MOON ROOF MOTOR
AND LIMIT SW
BZ13
L
R
WINDOW
LOCK 3 2
5 1
B
Left kick panel1
2
5
1F
R
WhereEverybodyKnowsYourName

1234
13 LEXUS SC300
4ACC
IG1
ST 1
AM1 2
1J
7 21J
5
4
1B
4 2
441H
16
8IE1
9IE1
M
1
13
4 3
265 32
14 M
21
4IE1 3IE1
6B
7A 8B 17B 14A 13A
1J
1 1K
6
IF
L
L±W L±R
R± L L
W±B
B
G± R
WW
W± L W
B±YW
B±Y
L
L±R
L±W
L
B
G±R G±R
B WW
W± B
L
G±O G±O L
W±B
W± B
20A
WI PER
25A
HAZ±HORN
I15
IGNITION SW
40A
IGSW
60A MAIN 100A AM1
120A ALTF9
FUSE BLOCK HORN
RE LA Y
C15
HORN SW
[ COMB. SW]
To Thef t Deter rent and
Door Loc k ECU< 17±3>
11
HORN
H5
LH
H6
RH
BATTERY W5
WIPER MOTOR
WIPER RELAY
OFF
MIST
INT
LOW
HIGH
WASHER
INTTIME
+2 +1 S B B1 I N1 IN2 W E
WIPER AND WASHER SW
[COMB. SW] W2
WASHER
MOTOR
Power
Source
Wiper and Washer
B
6 74 WIPER AND WASHER SW
[COMB. SW]
C15B
,C16 A
C15
B
C1 6A
Horn
1
10 11 12 13 17 189
8
4
3
2 567
14 15 16 12
89
10 11 12 13 147
6
5
4
3
Left kick panel
5 6
WhereEverybodyKnowsYourName