engine LEXUS SC400 1991 Service Repair Manual

LEXUS SC400 1991 Service Repair Manual SC400 1991 LEXUS LEXUS https://www.carmanualsonline.info/img/36/57051/w960_57051-0.png LEXUS SC400 1991 Service Repair Manual

Page 3924 of 4087

LEXUS SC400 1991  Service Repair Manual 
241
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
E 1I3238ENGINE WIREE 3I3328ENGINE WIRE
E 4ENGINE ROOM MAIN WIREI3828COWL WIRE
E 534ENGINE RO

Page 3926 of 4087

LEXUS SC400 1991  Service Repair Manual 
X67
XXXX67
12 12 56
C13 C15
H1,H2 H3,H4 I16 BLACK
BLACK BROWN F9
X
X XX13 189
4
X7
X
81
HEADLIGHT RELAY1±2 : CLOSED WITH LIGHT CONTROL SW AT  HEAD POSITION OR DIMMER SW AT  FLASH POSITION
C15  LIGHT

Page 3927 of 4087

LEXUS SC400 1991  Service Repair Manual 
1
C15 H 5, H 6 BLACK
X XX
X
14 X
X
111
HORN
2
5
IE19
4
44 IE 18
14 11E2
FROM POWER SOURCE SYSTEM
(
SEE PAGE 56 )
WW 25A
HAZ±HORN
HORN
RELAYBB
BG± R
B
12
6
HORN
HORN SW
[COMB. SW]
RH
LH
H5 H6
C15
3

Page 3930 of 4087

LEXUS SC400 1991  Service Repair Manual 
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
5
:System Title
: Indicates a Relay Block. No shading is used and only
the Relay Block No. is shown to distinguish it from the
J/B.
Example: Indicates Relay Block No.

Page 3937 of 4087

LEXUS SC400 1991  Service Repair Manual 
92
ILLUMINATION
TAILLIGHT RELAY5±3 : CLOSED WITH LIGHT CONTROL SW AT  TAIL OR HEAD  POSITION
C15  LIGHT CONTROL SW [COMB. SW]
3±4 : CLOSED WITH LIGHT CONTROL SW AT  TAIL OR HEAD  POSITION
: PARTS L

Page 3941 of 4087

LEXUS SC400 1991  Service Repair Manual 
96
INTERIOR LIGHT
INTEGRATION RELAY (J/B NO. 1)(1B)  5±GROUND : ALWAYS APPROX.  12 VOLTS
(1D)  8±GROUND : CONTINUITY WITH FRONT LH DOOR OPEN
(1I)   6±GROUND : CONTINUITY WITH FRONT RH DOOR OPEN
D1

Page 3945 of 4087

LEXUS SC400 1991  Service Repair Manual 
109
WITH THE IGNITION SW TURNED ON, THE CURRENT FLOWS TO TERMINAL 7 OF THE INTEGRATION RELAY THROUGH GAUGE
FUSE. VOLTAGE IS APPLIED AT ALL TIMES TO  TERMINAL (A)4 (USA), (B)11 (CANADA) OF THE INTEGRA

Page 3947 of 4087

LEXUS SC400 1991  Service Repair Manual 
1
2
X
X X
910
D4 I15
BLACK
107
LIQUID CRYSTAL INNER REAR VIEW MIRROR
2
1F
8 1B
5 B212
RY
R
R
R
W± B
10A
DOME
FROM POWER SOURCE
SYSTEM(
SEE PAGE 56 )
INNER MIRROR UNLOCK
WARNING SW
[IGNITION SW]
D4 I

Page 3951 of 4087

LEXUS SC400 1991  Service Repair Manual 
199
6. TILT UP REMINDER SYSTEM
WITH THE IGNITION SW IS TURNED TO ACC OR OFF WITH THE MOON ROOF STILL TILTED UP, KEY OFF MOON ROOF OPERATION
CAUSES CURRENT TO FLOW TO TERMINAL 6 OF THE MOON ROOF CONTR

Page 3953 of 4087

LEXUS SC400 1991  Service Repair Manual 
OVERALL ELECTRICAL WIRING DIAGRAM
1234
1 LEXUS SC300 (
Cont . ne xt pa ge )
2 1
5
3
1J
7 1J
31J 5
3D
1
1B
4 1E
81H 52 2
3D
2
16 IE1
1EB2 15 IE1 3EB1
2
5IJ2 13IJ2 2EB2
1A B B
B
B
L
IG
S 1J
6
1K
4
1
C