warning light LEXUS SC400 1991 Service Repair Manual
[x] Cancel search | Manufacturer: LEXUS, Model Year: 1991, Model line: SC400, Model: LEXUS SC400 1991Pages: 4087, PDF Size: 75.75 MB
Page 3964 of 4087

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
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Page 3966 of 4087

567 8
8LEXUSSC300(
Cont ' d )
22 11 4 14 8 1716 23
1B
5
3A
6 3E
3
3B
3 1E
11 3H 12
18 IK2 15 IK2 12 IJ 2 7IO1 8IO1
9IK2 5IK2 4IK2
2IK2 10IK1
23 E BRP
4E
TRCO 1D
BRC 5E
THFA 4D
BRFA 10 D
FRO 3D
FL O 12 D
RRO 5D
RLO 15 D
ABSO 8D
BAT 2E
IG1 6D
TC 16 E
TR5 11 D
IND 14 D
WT 5
K
15 K
1
K
7D P
16 D N
1EPKB
13 IK2 3H
7
From A/ T Indicat or SW
[ NEUTRAL START SW AND
BACK±UP LIGHT]< 3±7> 26 E
BCM
25 EB±
24 EB
11 E A
12 EA±
13 EACM
14 EGND
13 DCS W
3ES1
15 E
BM 2D
STP 21 E
TR2 6E
NE O 8E
VT H 19 E
VSH 10 E
IDL1 22 E
IDL2
6 2
16 IK2
13 IJ1 3H
14
1E
18 3A
2
1J
1
IJ IF EE
213645
BCM B± B A A± ACM 1J
52
3A
4
3D
13 1E
12 2 13 14
5EE1
1
L
To Engine and
ECT ECU< 2±8>
10A
GA U GE 7. 5A
TRAC
From Stop Light SW
<5±6><4±6>
From Trottle Position
Sensor< 2±8>
FromSubThrottlePosition
Sensor< 2±8>
WB±Y
L
V± R
P±G P±L
LG±B LG
Y±B P
R± B
V±W P±B L
V
R
B± R B± R
R±W L
GR
B
R±W GR
L V± W
P±B
WA TC TC ABS W TRC
B±Y
V± R
P±G P±L
LG±B LG
Y±B
P
R±B
R
B±R RR
R±B
B±Y
W
L±R Y
Y
L±R
G±W
Y± RP±L
V±Y
Y±L R
R±B
BR
Y± R
W± B
BR
G
W L
R Y B
B
W± B Y± R
W±B
W±B
W± B
BR L
GR
L
L
P±B
L±Y W
LG±R LG±R W P±B
V± W L±G
W
P±B
P±B
P±B
W±B
R± W
W
B±Y
TS WB
C3
CHECK
CONNECTOR T6
TDCL
(
Total Diagnstic
Communic ation Link )
TRACTION ECU ABS WARNI NG AND
TRACTION OFF INDICATOR
AND TRA CT I ON I NDI CA TOR
LI GHTABS
TRAC OFF
S8
SUB THROTTL E
ACTUATOR
T12
TRACTION CUT SW (
SHI ELDED )
ABS and Traction Control
To Parking Brake SW
(
Canada )
< 21±2>
To Brake Fluide Level SW
( USA )
< 21±2>
To Parking Brake SW
< 21±3>
C1 3 , C14 KL
T1 3 , T1 4 DE 7IJ2
L±R
ABS AND TRACTION ECU TRACTION ECUABS WARNING AND TRACTION OFF INDICATOR AND
TRA CT I ON I NDI CA TOR L I GHT
Right k ick panel Left k ickpanelRea r
side of
cylinder
head LH
G±W
E
E1
20
To Engine and
ECT ECU< 2± 8> BRBR
BR
1234 67891011
14 15 16 17 18 24
512
25 26
20
19 21 22 23 13 12345 7 891011
1214 15 16 17 18 22
6
19 20 21
13 12345678
16
15
14
13
12
11
10
9 12345678
16
15
14
13
12
11
10
9 1234 67891011
14 15 16 17 18 24
512
25 26
20
19 21 22 23 13
A
A2 4 B A2 5 CA26 DT13 DARK GRAY E T1 4 DARK GRAY
12 34 56 78
910 111213 141516 1718
17 18
1 2345 6789 10
23
22
21
20
19
15
14
13
12
11 16
K
C13 L C14 123
456
12
34
F
T 3 BLACK G T4 BLACK
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Page 3967 of 4087

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
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Page 3974 of 4087

1234
15 LEXUS SC300
4ACC
IG1
ST1
IG2
AM1
3
2
6
11 AM2
1J
7 1J
81J 51J 3
1B
4 1E
21E 17 1I9
1G
6 1G
10
3G
6 3A
5
7IG2 16 IJ26IJ2
16 IE1
4 9 14 13 1
6 42 3315 138453
2 4
7 8 3H
15
3A
1
12 IG1
1
2
IJ IF
4
1G
18
1E
13
1H 3
1G
1
IJ 1B
2
1G
11E 13
611
1211 10
11 10 12 9
1G
71G 9
3D
11
1E
31E 4
3A
3
3A
7
12
SPI RAL
CABLE
11
12
45 23 IK1
10 IK1 3B
2
3E
10
3E
33H 12
7
514
2
W
W± R
W±B
W±B
W±B
P±L
B±Y
B±O
L±R
L±R
L±R
B±R
B±R
L±R
B±O
W± R
W± R W± LB±O
B±Y
P±L
W± B P
LG±B
LG±R
W± B W± B R
W
GR B
YL
P± B
B±Y
B±Y
B±Y P±B
B±Y
P±B
B±Y P±B B± Y P± B
W± B W± B
V
P
LG±B
LG±R
G± W
V
W± B
W± B W
W±RW± L
W± L W± L W
W± R
40A
IGSW 15A
ECU± I G
15A
CI G
I15
IGNITION SW
100A AM1
120A ALT
30A AM2
30A INJ
SHI FT LOCK
SOLENOID
SHI FT LOCK
CONT ROL S W
F9
FUSE BLOCK S1 0
SHI FT LOCK ECU P2
PPS ECU
P1
PPS SOLENOI D
STP KLS+ E
E SPD SOL + SOL±
L±R
L G±RG
G±W
I15
KE Y I NTE RLOCK
SOLENOI D
[IGNITION SW]
Fr om Stop Light SW
<4±6><5±6>
From Combination
Meter< 21±5>
BATTERY E1 E2 +SL ±SL +SR ±SR D+ D± TC LA
+B
IG2
ACC
+B
IG
ACC
SLS+
SLS±
PT
P±
P2 7. 5A
IGN
15A
ECU± B
C12
AIRBAG
WARNING
LIGHT
[COMB. METER]
F1
FRONT AIRBAG
SENSOR LH F2
FRONT AI RBAG
SE NS OR RH
A29
AIRBAG SQUIB
T6
TDCL
(Total Diagnostic
Communicat ion Link )C3
CHECK CONNECTOR
TC AB TC AB
Power Source Shift Lock PPS SRS Airbag
C10
CENTER AIRBAG SENSOR ASSEMBLY
Right kick panel Left k ick panel
3
4
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Page 3977 of 4087

OVERALL ELECTRICAL WIRING DIAGRAM
1234
17 LEXUS SC300 (
Cont . ne xt pa ge )
4 ACC
IG1
ST1
AM1 3
2
1J
7 1B
21J 51J822
1B
51E 11
1E
51K 7 1K
13 1I 14 22
1H
10
1B
4
1
4 9IJ1 4IJ19IE1
8BY1 8 BT1 14 IE1 7 BT1 9 IP1 17 IG1 15 IF2 14 IF2 1 2
8A +B 2 2A
IG 7B
ACC 4B
SH 20 A
+B1 5B
HE AD 13 B
TAI L 1A
SRLY 11 B
HORN 8B
DS WP
10 B DS WL
12 B DSWH
1B LUG
5ATO
19 ATSW
6AKSW
14 AL1
10 AUL 3
3 1 2
1 1
2
2
1 1
BL BM EA IF 3F
7
3A
1
18
1E 10
1D
1
1J
16 A
E
15 AUL 1
18 A UL2
17 A LSWP
5IF2 4IF2 5IP1 14IP1 8IP1 19IP1 12 A
PCTY 7A
LSWP 4A
ACT+ 3A
ACT± 11 A
LSWD 13 A
DS WD
LOCK
UNLOCK
IJ
IF 20 IP12
31
1
3
2
LOCK
UNLOCK
1
2
8
LOCK
UNLOCK
1
3
2
LOCK
UNLOCK
G±W G± Y Y
R±B
W± L L±W L±R
P± B
R± W R
G±Y G±W
W±B
W±B
W± B
W± B
W± B G± Y
R± B G±L
W
R
R±Y
G±W L±O
G±R Y±R
R± W P± B
L±R
L±W
W± L R±B R
W
B±O
L±R
B±R
L±W L±W
W
W
W
R W
W± L
W
W± L
W± L
W
L±R
L±G
G±L
R±W
B
W±B
L
Y G±Y
G
R±B G±L
G±Y
G±W
G±W G± YG± L
R±B G± L
R±B G
G± Y
W±B
W± B W± B W± B
R
W±B
W±B
W± B
W± B W±B
R± L
B±Y
B±O
4 1
3 2
60A MAIN
100A AM1
120A ALT
40A
IGSW
F9
FUSE BL OCK I15
IGNITION SW
30A
DOOR
15A
ECU±
IG15A
CI G
25A
HAZ±HORN 10A
DOME
T1
THEFT DET ERRENT
HORN
THEFT DETERRENT AND DOOR LOCK ECU
F10
FUEL LID
OPENER SW
L±R
L±G
G± L
R± W
B
L
BATTERY
F14
FUEL LID OPENER
SOLENOID
L5
LUGGAGE COMPARTMENT
KEY UNLOCK SW E5
ENGI NE HOOD
COURTE SY SW
To Luggage Compartment
Light SW< 6±3> L4
LUGGAGE COMPARTMENT
DOOR OPENER MOT OR
L1
LUGGAGE COMPARTMENT
DOOR OPENER SW
To UNLOCK WARNING SW
<4±4><5±4>D7
DOORKEYLOCKAND
UNLOCK SW LH
P5
DOOR LOCK CONT ROL S W LH
[ POWER WI NDOW MASTER SW] Fr om Headlight Relay
<4±2><5±3>
From Taillight Relay
<4±3><5±3>
Fr om Sterter Relay
<1±3><2±2>
Fr om Hor n Rel ay
< 13±1>
To Power Main Relay
< 12±4>
D9
DOOR LOCK CONT RL
SW RH
D8
DOORKEYLOCKAND
UNLOCK SW RH
Power
Source Theft Deterrent and Door Lock Control
W± L
B±YR± L
6 2
7 T8 B , T9 A
Fr om Tilt and Power
Telesc opic ECU< 11±1>
Y
Under the center
pillar RH Ba ck
panel
centerFro nt si d e of
right fender
Lef t kic k panel
Left k ick panel Right k ick
panel
R± B
M6
5
5
6
2IG19A
To Trip SW and
Theft Deterr ent
I ndic ator Light
< 21±4>
G± B G± BIND
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Page 3983 of 4087

OVERALL ELECTRICAL WIRING DIAGRAM
1234
21 LEXUS SC300 (
Cont . ne xt pa ge )
4 ACC
IG1
ST 1
IG2
AM1
3
2
6
11 AM2
1J
7
1B
4 16 IE1
20 IK110 IK2
1IE1
1J
31J 51J821B 2
1E
1E
18
1E 1H1E 2 1E
131B
IG1 20 3D
3A 4
3D
2
3C
6
3A
2
3F
1 2 1 6
3F 5
3C
5
3A
IK16
IK1 7
10 IJ1
IE110
IG118
EB
19 IG1
ED EA 13 IE2 14 IG3 W± R
R
Y
B± O Y± B
V±R V± Y
R± W
L±R
W
R±Y B
V±W V
R
L±R
P± L
R
L±R L±R
P± L
P± L
Y
B±O B±YP±L
W± L
R± W
B
W± B R±W
B
W
W
W±L
W± L W±L
W
W±R
Y±B
V±R
V± Y
R±WV±Y V± R Y±B
W± R
W
W± R
B± O
R±W R± W
B
B
R±W R±W
R±W V±Y
BR
W± B
R±W Y
W±B Y
R4713
21 11
4
12
8
7
9
2
1
2
340A IGSW
100A AM1
120A ALT
60A MAIN
30A INJ
30A AM2
14
9 I15
IGNITION SW
7. 5A I GN
10A GAUGE
15A CIG
10A DOME
15A ECU±B
From ABS ECU
<9±2>
From ABS ECU
< 8±5>
(
* 1 )
(
* 2)
6
BATTERY
F9
FUSE BLOCK
12
O2
OI L P RE SS URE SW
C5
COOLANT LEUEL
WARNING SW E6
ENGI NE OI L L EVEL
WARNING SW
P3
PARKI NG
BRAKE SWD2
DIODE
(f or Par king
Brake )
B1
BRAKE FLUID
LEVEL SW
B
B
R±W R±WR±W
R±W
B
B B
( Canada )
(
Canada )
( US A )
(USA )
(
US A )
(
US A )
(
Canada )
(
Canada )(
Canada )
(
* 2
) (
* 1)
(
US A )(
US A)
(
USA )
R±W
R± W
Fro m Dayt i me
Running Light
Relay< 4±4>
Fr om Cr uise Control
ECU< 16±2> T1 5
TRIP SW AND THEFT DETERRENT
I NDI CA TOR L I GHT
S3
SPEED SENSOR No. 1
From Tr act ion ECU
<8±7>
2
W
12 12 2 54 11 13 *
1: (
w/ Tr action Contr ol )
* 2: (
w/oTractionControl )
Power
Source Combination Meter
R±WL±R
R
4 3
SECURITY
M
H
SET
RESET A/ B
W1
WASHER
LEVEL SW
P± L
L±R
R W± R
From ABS ECU
<8±5>
( * 1)
R
R
10 11 12 13 17 18 19 20 21 12345 6789
14 15 16 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 C
C12 C13 C14 COMBINATION METER
1 1
23
DE
FUEL SENDER
F1 7 F1 8
Rear side of
c ylinder head LH Fr ont side of
right fender Fr ont s ide of
left f ender
2
1
2 2
1 1
1
B
S HORT CONNE CTOR
1
2 12F
S23
G
S22
7BU1
From Tilt and
Power Telesc opic
ECU< 11±2>
GR
B
( M/T ) 3
G±B
From Theft Det err ent and
Door Lock ECU< 17±2>
WhereEverybodyKnowsYourName
Page 3984 of 4087

567 8
21 LEXUS SC300(
Cont ' d )
AIR BAG
CHA RGE
OIL
OIL LEVEL COOLANT
LEVEL REAR
LI GHT
PWR
ABS TRAC
TRAC OFF
CRUISE WASHER
O/ D OFF
FUEL
SEAT BELTP
R N D 2 L
A
C
C A
A
B
B
B
C
C
C
C
C
C
C
B C
C
B
B
BA
B
A
A
C
CA A A A A A A A
C
C
C
C C C A C C B B B B
B A A C C
10 : 00
BK 1E
18 3D
10
3A
1
1J
1 1K
12
IH IF ED
IK1
8
IK2 IK1
9
1
E
3
E
2
E
1
D
BU110
BU1
3
BU1
4 11
11
1
14
19
8
18
11
13 6
18
17
16
20
19
15
13
3
15 5
1
20 9
18 8
11
87 1 2 3 4 5 16 17
2
3
4
5 10 9
12 23 12 4 17 16 7
6
15
10 22 21
W± R
RY
B±O
Y±B
V± R
V±Y
R±W
L±R
W
R± Y B
V±W V
R
L±R
P±L
Y±B
B±Y
B± W
W±B BR
B
W± B W± B BR±B
Y± G
B
Y±G
BR±B
W± B
W±B
W±B
BR±B W± B BR
Y±G
WATER
TEMP.HI GH BEAM TURN
LH
RH
BRAKE DOOR
TACHO
TRI P
SPEED
ILLUMINATIONCHECK±
ENGINE
FUEL
See Taillight and
St op Light Sy stem
<4±6><5±6>
SeeEngineControlSystem
<2±3>
Se e ABS Sy st e m< 8± 7> < 9± 3>
See Cruise Control System
< 16±3>Se e ABS an d Tr act io n
Control System< 8±7>
SeeECTandA/TIndicator
System< 3±5>
D
F1 7 , F18 E
FUEL SENDER Y±B
B±Y
B±W 24
See SRS Airbag System< 15±4>
See Charging Sy stem< 1±2>
See Headlight Sys tem< 4±1> < 5±1>
See Turn Signal and
Hazard Warning
Light Sy stem< 7±3>
See ECT System< 3±5>
From Neutr al St art SW< 1±3>
See Interier Light System< 6±3> From Igniter º TACº < 1±5>
To Engine and ECT ECU< 2±7>
To Cruise Control ECU< 16±3>
To PPS ECU< 15±2> See Illumination System
<4±7><5±7>
See ECT and A/T Indic ator
Syst em< 3±6>
See Unlock and Seat Belt
Warning Syst em< 4±4> < 5±4>
W3
WATER TEMP.
SENDER
Combination Meter
1
COMBINATION METER C12 , C13 , C14
A
AB IG1
8
Under the
c ent er
pillar LH Under the
as htr ay LH
Lef t
kick panelRear side of
c ylinder head RH
C
2
G 2
F
1
F 14
L±R
P
P
SH OR T C ON NE CT OR
S2 2 G , S23 F L±R
WhereEverybodyKnowsYourName
Page 3990 of 4087

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±311±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±315±2
Power Tilt and
Power Telescopic12±2
Power Seat (Passengerºs
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±119±2 (w/o CD Player
20±2 (w/ CD Player
14±310±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
WhereEverybodyKnowsYourName
Page 3994 of 4087
![LEXUS SC400 1991 Service Repair Manual
47
216182
216
178
216
129 104 144 10260
90
216 62
68
11 2
148
104
111 200 148 148 190
D1
C16 C24
C15 C19 C23 C22
C12
C13
C14C14
C13
C12
Airbag W arning Light
Charge Warning Light
Dimmer SW [Comb. SW] LEXUS SC400 1991 Service Repair Manual
47
216182
216
178
216
129 104 144 10260
90
216 62
68
11 2
148
104
111 200 148 148 190
D1
C16 C24
C15 C19 C23 C22
C12
C13
C14C14
C13
C12
Airbag W arning Light
Charge Warning Light
Dimmer SW [Comb. SW]](/img/36/57051/w960_57051-3993.png)
47
216182
216
178
216
129 104 144 10260
90
216 62
68
11 2
148
104
111 200 148 148 190
D1
C16 C24
C15 C19 C23 C22
C12
C13
C14C14
C13
C12
Airbag W arning Light
Charge Warning Light
Dimmer SW [Comb. SW]Cruise Control Indicator Light
[Comb. Meter]A/T Indicator Light
[Comb. Meter]
Combination Meter
Rear Lights Warning Light Turn Signal Indicator Light
[Comb. Meter] High Beam Indicator Light
[Comb. Meter]
Check Engine Warning Light
Open Door Warning Light
Traction Indicator Light
ABS Warning Light
[Comb. Meter] Seat Belt Warning LightABS Warning Light and T raction
Off Indicator Light [Comb. Meter]
Coolant Level Warning LightCruise Control ECU Turn Signal SW
[Comb. SW]
Wiper and Washer SW
[Comb. SW]
Choke Coil
Crutch Start SW
Cruise Control Clutch SW
Diode (for Brake Fluid Level)Light Control SW
[Comb. SW] Horn SW [Comb. SW]Combination MeterCornering Light SW
[Comb. SW]
C12 80
82
216
216 216 98
86
216134
216
216 216 184
216
80
90
102 80
90
102
68
94
134
148
216
(4)
: R/B No. 5 (See page ) 22
WhereEverybodyKnowsYourName
Page 3996 of 4087
![LEXUS SC400 1991 Service Repair Manual
49
F16 F18 I1H8
G2
G1 H1 H3 H2 H4 H5 I2 I14 I15 L7 I16 L2 M2L6
L3 M4
80
194
111 94 101
62
68
101 11 2
126
186 154
162
68 68 94
216
90 86
107
H6 H7 H9 98
N1
Unlock Warning SW
[Ignition SW] Igniter No. LEXUS SC400 1991 Service Repair Manual
49
F16 F18 I1H8
G2
G1 H1 H3 H2 H4 H5 I2 I14 I15 L7 I16 L2 M2L6
L3 M4
80
194
111 94 101
62
68
101 11 2
126
186 154
162
68 68 94
216
90 86
107
H6 H7 H9 98
N1
Unlock Warning SW
[Ignition SW] Igniter No.](/img/36/57051/w960_57051-3995.png)
49
F16 F18 I1H8
G2
G1 H1 H3 H2 H4 H5 I2 I14 I15 L7 I16 L2 M2L6
L3 M4
80
194
111 94 101
62
68
101 11 2
126
186 154
162
68 68 94
216
90 86
107
H6 H7 H9 98
N1
Unlock Warning SW
[Ignition SW] Igniter No.1 Fuel Pump ECU
Glove Box Light
Headlight LH HI
Hazard SW
High Mount Stop Light
(w/ Rear Spailer) Horn LHISC ValveIgnition Key Cylinder Light
Key Inter Lock Solenoid
Moon Roof Control Relay Light Failure Sensor
Luggage Compartment
Light SW
A/T Indicator SW
Back±Up Light SW
Neutral Start SW Licence Plate Light Integration Relay Fuel Sender
Glove Box Light SW
Headlight RH HI
Headlight LH LO
Headlight RH LO
Horn RH
High Mount Stop Light
(w/o Rear Spailer)
Luggage Compartment
Light SW
Moon Roof Motor
86
98
108
182
216
82
91
94
102
82
216 90
104
(4)
: R/B No. 5 (See page ) 22
WhereEverybodyKnowsYourName