1991 LEXUS SC400 Service Repair Manual

Page 3857 of 4087

LEXUS SC400 1991  Service Repair Manual 
60
CHARGING
1E
81H 52
3D
2 2
3D
1
IG3
1 IJ2
13 EB2 2
IJ1
5
A
A
A
231
LIG S B 1B
IC REGULATOR
6
11
57 1412
15
WB W B
W
B±O
Y±G
Y±G
Y±G
Y±G
Y±G B±Y W
B B±Y
W B±Y
W
B
FUSE B LOCK
BATTERY 7. 5A

Page 3858 of 4087

LEXUS SC400 1991  Service Repair Manual 
61
A10(A)  ALTERNATOR
(A) 1±GROUND : 13.9±15.1 VOLTS WITH ENGINE RUNNING AT  2000 RPM AND  25°C ( 77°F)
13.5±14.3  VOLTS WITH ENGINE RUNNING AT  5000 RPM AND  11 5°C ( 239 °F)
(A)  2±GROUND :

Page 3859 of 4087

LEXUS SC400 1991  Service Repair Manual 
169
CIGARETTE LIGHTER
1E
2
3A5
3F5
3F8
1E18
3A 1
1J1
IF
FROM POWER SOUR CE SYSTEM
(
SEE PAGE 56 )
15A
CIG
CIGARETTE
LIGHTER C11
L±R L±R
W±B W±B
W±B
4 2
C11  CIGARETTE LIGHTER
2±GROUND : APPROX.

Page 3860 of 4087

LEXUS SC400 1991  Service Repair Manual 
218COMBINATION METER
1E
81E 13
1E
12 1H 12
1J
1
3D
23A 3
3D
13D 11
1E
4
1G
9
1K
12
1E18 3D
13 3A
4
IG1
8BU1 4BU110 BU1 3
IG3
1 IK1
8
IK1
9IK2 24
IJ 1
5 1
IF BK
A
14 A 11 C 1
A
15 A 10 B 6A 8C8C 7C 9

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LEXUS SC400 1991  Service Repair Manual 
219
1E
2
IK1
6
I22
IHC
10
C
13 C 14 C 19 C20 C 16 C17 C18 C 6
412 97812
3A
5
3C
5
3F
6
L±R
L±R
V±R
RRR
V
V±W
B
R±Y W L±R
L±R
TRIP SW AND THEFT DETERRENT INDICATOR LIGHT 15A
CIG
TRIP METER
CIRC

Page 3862 of 4087

LEXUS SC400 1991  Service Repair Manual 
220
COMBINATION METER*1 : W/ TRACTION CONTROL
* 2 : W/O TRACTION CONTROL
2
1
3D
4 3A
6 1E
11
1B5
IK1
12 IK1 11 IK1 13 IK114
IK2
10
OPEN DOOR
RE AR LIGHT
BRAKE
ECT POWER P
R
N
D
C
11 A
17
C
12 A 1A2A

Page 3863 of 4087

LEXUS SC400 1991  Service Repair Manual 
221
1E
19 1E 14
1H
11 1H 7
IK1
16 IK1 17
2
L
LH
TURN
A
5A 16 B 17 B16
C
23
1 IK2
5 IK2
4
SEAT BELT
ABS
TRAC
TRAC OFF
A
19 A 7B15 B 5B1
W±B
LG±R W
V
LG±R
TO ABS AND
TRACTION ECU
(
IND )
TO ABS AND

Page 3864 of 4087

LEXUS SC400 1991  Service Repair Manual 
222
COMBINATION METER
O/D OFF
CRUISE CONTROL
3A
10 3A 9
3C
1
IG1
5 1I
3
A
5
G±O
G±O
G±O
C
5C 4C3C2
413
A
20 A 18
3C
43B 4
3D
63D 53D5
3F
4
3E
1
IG1
15
TO ENGINE AND
ECT ECU (
OD2 )
TO CRUISE
CONTR