relay LEXUS SC300 1991 Service Repair Manual

LEXUS SC300 1991 Service Repair Manual SC300 1991 LEXUS LEXUS https://www.carmanualsonline.info/img/36/57052/w960_57052-0.png LEXUS SC300 1991 Service Repair Manual

Page 3980 of 4087

LEXUS SC300 1991  Service Repair Manual 
1234
19 LEXUS SC300
4ACC
IG1
ST1
AM1 3
2
3BV1
2 BV2 1 BV2 6 IQ2 7 I Q2 4 BV2 3 BV2 10 BV2 9 BV2 6 BV1 5 BV1 4 BV1
10 I F2 1 IF22IG2 1IG2 11Bc2 12Bc2
10 BV1
11 IQ2 3 IQ1
7 BV2 2 BV1 19 BV1 7 BV1 18 BV

Page 3981 of 4087

LEXUS SC300 1991  Service Repair Manual 
OVERALL ELECTRICAL WIRING DIAGRAM
1234
20 LEXUS SC300 (
Cont . ne xt pa ge )
4 ACC
IG1
ST1
AM1 3
2
1J
7
1B
4
5
BV3 4
BV3 15
BV3 14
BV3 13
BV3 12
BV3 1
BV3 8
BV3 11
BV3 10
BV3 3
BV3 2
BV3 16
BV3 10
BV

Page 3982 of 4087

LEXUS SC300 1991  Service Repair Manual 
567 8
20 LEXUS SC300(
Cont  d )
2
MUTE
5 RU±1
RU+
9
WF±
10WF+
6
AMP 8
GN D 3
B 4
ACC 7
E 6 BV2 5 BV2 2 IG2 1 IG2
11 BC2 12 BC2
10 IF2 1 IF2
6 IQ2 7 IQ2
1B FR+ 2B
FL +
5B
FR± 6B
FL ± 3B
RR+ 4B
RR

Page 3983 of 4087

LEXUS SC300 1991  Service Repair Manual 
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

Page 3985 of 4087

LEXUS SC300 1991  Service Repair Manual 
OVERALL ELECTRICAL WIRING DIAGRAM
1234
22 LEXUS SC300 (
Cont . ne xt pa ge )
4 ACC
IG1
ST 1
AM1 3
2
1J
7 21J
51K2
22 22
1B
4 2
1A
5
22 222 2 1
3
5 4
53
1
2
EB1 EB1 3IN1
2IN1
IN1
6
1IN1
12 IN1
EB I J

Page 3986 of 4087

LEXUS SC300 1991  Service Repair Manual 
567 8
22 LEXUS SC300(
Cont  d )
12
II1
7
II1 2 IR2
5
IR2 4
IR2
IR1
IR1
IR1
IR1
IR2
IR2
IR2
IR2 1J
82
1E
22
5
1B
3A 3A
3A
3E
3H 3G 3B
3G
11
1E
IQ1
IQ1 IQ1 IQ1 IQ1 IQ1 II1
5
IR2
IR1
IR1
IR1
IN1
4
EB1

Page 3989 of 4087

LEXUS SC300 1991  Service Repair Manual 
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

Page 3991 of 4087

LEXUS SC300 1991  Service Repair Manual 
44
POWER SOURCE (Current Flow Chart)
The chart below shows the route by which current flows from the battery to \
each electrical source
(Fusible Link, Circuit Breaker, Fuse, etc.) and other parts.
T

Page 3992 of 4087

LEXUS SC300 1991  Service Repair Manual 
45
Light Control
SW
ABS and 
Traction ECU
Diode
Theft Deterrent 
and Door Lock ECU
Integration
Relay Noise Filter
(for Ignition
System
Injector No. 3
Injector No. 4 Igniter
7.5 ST 15A SEAT±HTR Ignit

Page 3993 of 4087

LEXUS SC300 1991  Service Repair Manual 
46
POWER SOURCE (Current Flow Chart)*1:  USA
*2:  CANADA
60
216
226
192178
226 90 144 134 216 102 202
208
212 90
167
A2 A15 C6 B2
B1
A10 A14 A12 A17A13 A23 A24 A25 A32 C11 B3 B4 B6 C3 C10C7
A21
Blowe