Electrical Wiring Diagrams

ELECTRICAL WIRING
DIAG RAMS
H O W TO READ THIS SECTION
PIN NUMBER
Numbered in order
from upper left to
lower right
Numbered in order
from upper right to
lower left
Pin
Female
Ma'e
BE0832
Male & female connectors distinguished by shape
of their internal pins.
All connectors are shown from the open end,
and the lock is on top.
%
When connectors with different numbers of terminals are used with
the same parts, the pin number and the numbers of terminals are
specified.
e.g. ( 1 14) = No. 1 pin14 terminals connector
Female
/
Male
BE0833
JUNCTION BLOCK OR RELAY BLOCK
Wire Color
Wire Color
I
#'
Block Inside
WIRE COLOR
Wire colors are indicated by an alphabetical code.
B = Black
LG = Light Green
W = White
BR
=
Brown
0 = Orange
Y = Yellow
G = Green
P = Pink
GR = Gray
R = Red
L = Blue
V = Violet
The 1s t letter indicates the basic wire color and the 2nd indicates the stripe color
Example: R-G indicates a Red wire with a Green stripe.
ABBREVIATION
The following abbreviations are used in this wiring diagram.
= Left-Hand
LH
A.B.S. = Anti- Lock Brake System
= Manual Transmission
= Air Conditioner
A/C
MI T
= Overdrive
A/T
= Automatic Transmission
O/D
OX
= Oxygen
= Circuit Breaker
CB
PPS
= Progressive Power Steering
= Compact Disc
CD
RH
= Right-Hand
COMB. = Combination
= Switch
SW
ECT = Electronic Controlled Transmission
TCCS = Toyota Computer Controlled System
ECU = Electronic Controlled Unit
= Electronic Fuel Injection
EFI
TEMS = Toyota Electronic Modulated Suspension
EGR = Exhaust Gas Recirculation
VSV = Vacuum Switching Valve
= With
= Fusible Link
FL
wl
= Without
ISC
= Idle Speed Control
w/o
SYSTEM INDEX
1990 Model (Page 1 to Page 9)
TOYOTA SUPRA
SYSTEMS
SYSTEMS
LOCATION
A.B.S.
(Anti-Lock Brake System)
PPS
Air Conditioner,
Cooler and Heater
Power Seat
Auto Antenna
Power Source
LOCATION
Power Windows
Back-up Lights
Charging
Cigarette L~ghter
Clock
Radiator Fan and
Condenser Fan
Radio and Tape Player
Rear Window Defogger
Rear Wiper and Washer
Combination Meter
Cruise Control
Door Locks
ECT (Electronic
Control Transmission)
Engine Control
Remote Control
Mirrors with Heater
Shift Lock System
SRS Airbag
Starting
Stop Lights
Fog Lights
5-4
Taillights and Illumination
Front Wiper and Washer
TEMS
Headlight Cleaner
Headlights
Theft Deterrent
System
4-8
Turn Signal and Hazard
3 -4
Horn
Interior Lights
Unlock and Seat
Belt Warning
@
6-1
Ib
1
,
I
F
3
I,
m
-
2
:
-
W
4
W-R
8
e 1 to Page 9)
I
'?
(Ex. Canada A I T )
2
,,
E
r
I-
11
CLUTCH
S T A R T SW
(MITI
To Cruise Control Clutch SW (5-21
+
To
Theft Deterrent
Computer 14.8)
INJECTOR
sunder r ~ g h front
t
pillar
f = Located on back panel
,B - 0
I
0-y
T
.
-a
START INJECTOR
r l M E SW
-2
EFI MAIN
RELAY
Engine Control (7M-GE)
I wI
1
E01 #10 STA STJ NSW
ISC
ISC
G-
G2
NE
IGT
4
IGF THW
OX1
FG
'SV
EGR SPD
W
E2
Ll
L2
L3
THA
VS
VC BATT
Lk
DEF ECT
LP
El1
+Bl
FP
AIC
I
I M I T ) B-Y I A I T ) B-W
VSV (For Intake Air Control)
TO
ECT
$1
I"
CCII
LC."
f\
-
Y-L
-
T
THROTTLE POSITION SENSOR
CCI IfilAT
r rrn.
n I ER
~
I
TEMP. SENSOR
THW
I
EGR GAS TEMP. SENSOR
(California)
8-Y
I
2
W-R
L-R
4
LG-R
L-R
LG-R
6
BR
-
5
LG
7
(b
u-n
1
-
G
B-R
FIDL
BR
LG
O X SENSOR (Sub.)(California)
EGR
VTA
+B1
ISC3
ISC4
ISC2
VC
vs
CHECK ENGINE
(COMB. METER)
E2
m
I
1°/12
W
Y
THA
GR
I G SW
L-R
AIC
BR
Ell
R -L HT
1.
I
VSV (For EGR)
THG
-
B-O
L-R
R.W
To TEMS
Computer (3-71
ox2
a
I
8
I
CHECK CONNECTOR
OX1
I
OX SENSOR (Main)
TE 1
EI
IG.
TT
T, C
., ,
18
17 (16
E2
I
9
GR
4
W
6
W
C
I
L - - I{ A ~ V~F l
I
-.
L--4
R-G
BR
B
I
,---A
,
OX1
R-G
L2
L3
DEF
SPD
LP
'ECT
IGT
IGF
R-Y
P
R-L
,
-
R-Y
==
=.
V
KNK
From TEMS Computer (3-7)
Y
iB
From ECT ECU (2-61
6
=
From lgn~ter(1-71
W
W . R fli30
#20
W.L
*I0
GSTJ
--
GG2
E01
E02
From Defogger Relay 12.4)
From Headl~ghtRelay 15-71
To Speed Sensor 12-1I
To ECT ECU (2-6)
LG-B
KNOCK SENSOR
"'1
'El
From "GAUGE" Fuse
12-51
(Wire t o Wire \
\Connector 1
From "IGN" Fuse (1.7)
From A I C Amplifier 17-71
-
r
IGNITION COIL
AND IGNITER
IGNITION
COIL
I-
SPEED SENSOR
;
=
To Light Failure Sensor (5-3)
RADIATOR
F L U I D L E V E L SW
-
V-G
F U E L SENDER
1
W-B
I
PARKING BRAKE SW
3
3
OIl0
-L
-
m
dh
BRAKE F L U I D
L E V E L SW
14
TO Alternator
"L(1-7)
u
m[
From Cruise Control
Computer (5-21
From A.B.S. Computer 03-21
Ground points
a = Located on
left fender
I
b = Located on engine block
C = Located under left front pillar
I
t@3
Rear Window Defogger
1
OIL
PRESSURE SENDER
OIL
F U E L SENDER
L-R
1 4
6
BR
TURBO
PRESSURE SENSOR
LT
m
313 BR
CRlVE
CIRCUIT
-D
8
From Igniter (1-7)(8-8)
VOLT
WATER
TEMP. SENDER
d = Located under r ~ g hfront
t
p~llar
e =Located b e h ~ n dr a d ~ o
f=
Located on back panel
I
ECT (Electronic Controlled
f-
Transmission)
T o A.B.S. Computer 18-21
T o Heater Relay, A I C Relay Box & Heater Control Assembly 17 2)
ECT
PATTERN
SELECT SW
F r o m "ECU-IG" Fuse 13-6)
I
From
"DOME" Fuse (6-7)
t
i
AIT
INDICATOR
SW ( A I T )
F r o m Stop L ~ g hSW
t
15-31
t
m 24
oI 23
IG
t~
0
BK
I
0
0
Q
4/~13/6616/6/s,l
s,
?I
,
W
'
22
0
0
2
T o A B.S. Computer
18-21
Z
IT
0
R
N
,2 0 , ~ :
L
'hL
-
-
R-B ( A I T-)-
- W ~ r et o W ~ r e
(Connector
~
N
)$I81
P
ECT ECU
Wire t o
Wire
Connector
ECT SOLENOID
P-G
From "CIG" Fuse
From "ECU-IG"
Fuse (3-7)
From Stop L ~ g h t
SW (5-3)
1
L-R
I
I
G-R
G-W
P2
SHIFTLOCK
CONTROL COMPUTER
TOYOTA SUPRA (Cont'd)
JI
L-6
-
P-E
4
>
L
5
5
w
a:
'
6
W-R
L-0
WIPER A N D W A S H E R SW
0
7
HEADLIGHT CLEANER
RELAY
i
m 5
3
5'
5
[r
i
3
>
d
I
11
To L ~ g h Control
t
SW
(5-7)
OR R H
AETER)
p
GNAL
:E L I G H T R H
IF% LIGHT)
1
( w i l r e t o Wire
Connector
HORN R E L A Y
STEERING
SENSOR
3 TEMSSI
TOYOTA SUPRA 3
.L
U
0
use Control Main Relay (5-1)
I.S. Computer (8-2)
%ration Relay No. 2 (5-7)
to
Antenna Motor and Control Relay (6.5)
T ECU 12-51
8-
0-
E@
pu
US
z2
u
,"&
F
v
AL
AL
5
4/1~
>
+B
a
o
U
?
cm
t%
f&
4
2
rn
(0
zu,
,"I
-1
.c
W
2
c
c
1b
2*
3
o
ft Lock Control Computer (2-8)
1/12
a
a 1/10
HCK
SPD
SL
NL
5
=
5~
v
a
tl"
11
11
3
6
m
4/1~5/1~12/12
L3
1°/12
L2
L1
STP
M-
M+
SOL
7'
a
TEMS COMPUTER
SS1
$
SS2
2/12
3/12
VS
+ 9
HL
'112
7/12
Y12
<
I
0
p
9/12
2
u
l0/1o
7'
LT
STEERING
SENSOR
I
$
TEMS INDICATOR
(COMB. METER)
1
TEMS ACTUATOR
4 TOYOTA SUPRA (Cont'd)
17
POWER SEAT SW (LU!
ASSISTANT
M
M
POWER WINDOW MOTOR
Ground points
a = Located on left fender
C = Located under left front pillar
SUPPROT MOTOR6
d =Located under right front p~llar
f = Located on back panel
-I
SW ( L U M B E R )
u
11
IPOWER SEAT SW ( S L I D E )
-
-
7
a
a
a
J
d
5
3
P
'"
1
'
3
1
>
-I
12
5
q
-I
FRONT
SEAT
SLIDE
2
REAR
VERTICAL
-I
k panel
10
=? 2
u
W-B
I*
AOTORS
:
1
POWER SEAT M O T O R
.
o
DOOR LOCK SOLENOID R H
41
--
L-R
L
W
P
W-B
L
d
N
'r
Ibu
.
db +
m
TOYOTA SUPRl
I
*
&
,
$
9
Theft Deterrent
E
e
I
I
I
E
:z
o
D
;'
I
1
From Horn Relay(3 5)
- -
. F r o m "ECU-IG' ' Fuse (3-6)
Ea
-m 3
-0
b
C
N :
-
Y
-
-
P-B
W
s
3
n
rn
s
A
Wire
CRUISE C O N T R O L SW
(COMB. SW)
0
G-Y
a
tb Wire
( Connector
a
I
W-B
CRUISE C O N T R O L V A C C U M PUMP
/7M-GTEI
w
GR-R
2
CRUISE C O N T R O L V A C U U M SW
(7M-GTE)
II
CRUISE C O N T R O L STOP SW
.
G-Y [
G -Y
PI
A
P-L
1 R-B
N
h:
P-L
r
BR-n
N
I
R-8
BR-W
-
=
F r o m ECT ECU (2-6)
F r o m ECT Solenoid (2-5)
(AIT)
R-\r
0
---+I
T o Speed Sensor (2-1)
4
T o Parking Brake SW
& Brake F l u i d Level SW 12-2)
T o Neutral Start SW
or Starter (1 -2)(8-3)
-
B-W ( A / T )
B-L (M/T)
6-W ( A I T )
T
(Mm+k
-
B-W I A I T I
B-Y ( M I T I
t
- r!
CRUISE C O N T R O L
CLUTCH SW ( M I T I
-
A
9
(I]
rn
Q
Stop Lights
I
-
I
3
4
(Canada)
-
I1
wy
1
LICENCE PLATE LIGHT RH
I
LICENCE PLATE LIGHT L H
I
REAR SlDE MARKER R H
(REAR COMB. LIGHT)
AIT INDICATOR
I
HEATER CONTROL
G (USA)
ASSY.
G-R (Canada)
I
I
ECT PATTERN
SELECT SW
REAR SlDE MARKER L H
(REAR COMB. LIGHT)
W-G
C
w-Bl
I
CLEARANCE R H
TAILRH
(REAR COMB. L I G H T )
CLEARANCE L H
+@+I
I
FRONT SlDE MARKER R H
FRONT SlDE MARKER L H
I
( w i r e t o wire)
Connector
G-R
&(USA,
CIGARETTE LIGHTER
G
3
n
1
~
3
GLOVE BOX L I G H T
3-
FOG LIGHT SW
G
2
n 1
3,
-
~
GLOVE BOX
LIGHT SW
G
I
W-G
I
5/1~
I
-DEFOGGER SW
3-
G
W-G
,
3
_W-G
,
3
I
3,
G
m
%o
%2
COMB. METER
0
"3
"s
-
3,
H A Z A R D SW
G
/m?
W-G
R A D I O A N D TAPE PLAYER
(WIO CD Player)
T o Unlock Warning SW (4-7)
G-W
A
-
SEAT BELT
.
WARNIN';;
2
LIGHT
in
BACKLE SW
N-B
V-R
m
4
O U T SIDE
HANDLE SW
W-B
R-L
R-L
,
W
2
2
2
To Radio and
Tape Player
(6-5)(6-6)
To Clock (6-4)
DOOR WARNING L l G H T
I
DOOR K E Y CYLINDER L l G H T
(USA)
0
0
0
r
I
I I I - ~ ~
R-G
DOOR COURTESY
LIGHT R H
2
C)
0
C
n
$
.I ,
LIGHT L H
R-W
R-W
w
N
I
.
I
I I
DOOR COURTESY
- R,
A
-
2
INTERIOR L l G H T
I
n
R
4
I
DOME" Fuse (6-7)
1
-1
ROOM
-I
R-Y
rn
,From Door Lock Control Relay (4-7)
From Theft
Deterrent
Computer (4-8)
Y-B
A u t o Antenna
I
Radio and Tape Player
I
5
I
6
Fuse (6-21
(Wire t o Wire Connector)
1
F r o m "ECU-IG" Fuse ( 3 6 1
F r o m "DOME"
Fuse (6-21
, L-Y
4/
P
SPEAKER
a
LL
SPEAKER
W
2
7
AMPLIFIER
7
1
1
V-R
r
L-B
-L-Y
L-G
L-R
3
L-Y
I
2
L
--
2";
W
3
1
d
A 5 4 3
3
A / C BLOWER SPEED
CONTROL SW
A/C AIR M I X CONTROL SERVO MOTOR
rr
7 m 11
t
v-Y
a
I
R-W
1
--
LG
W-6
I
W-R
W-R
T
L-Y
I
I
I
I
I
I
I
I
I
I
I
I
I
I
L-G ,
T
I
I
I
I
I
I
I
I
1
I
I
I
l
l
Conditioner, Cooler and Heater
I -
A/C
SHORT PIN
J 1 "q J
A/C CHECK
CONNECTORS
HEATER CONTROL ASSEMBLY
I
AIC WATER TEMP. SW
(7M-GE)
1
:IR/FRESH CONTROL
MOTOR
1:
w-s,
7
,WBJ
2>; 3
I
I
I I
VVV
A I C A M B I E N T SENSOR
0
0
3
I
LG-R
0
s
.G-B
0
-
"DOME" Fuse (6-71
I
1 Wire t o Wire \
1 Connector
A/C WATER TEMP. SW
l7M-GTE)
>3
C
r
?
JJ
N-B
m
W-B
3
5
o
:
b,
-5
;
o
m
A
o
1.
1
(Wire t o Wire Connector)
AIC THERMISTOR
AIC AMPLIFIER
~
=
a
ul
To Parking Brake SW
& Brake Fluid Level SW (2-2)
From Stop Light SW 15-31
-
A
=
9
B
,.,
G-V\
2
N
INJECTOR
dunder r ~ g hfront
t
plllar
I
f=
Located o n back panel
@[:
g = Locared on npht fender
I
I
u
E01
To
ECT. ECU (2-61
#10
#20
E02 #30
STJ
-
A
Y-L
Engine Control (7M-
VSV2 EGR lSCl ISQ ISC3 ISC4 IGF
IGT
-
EFI WATER TEMP.
BRI
I *
'
I
MI-I
THROTTLE POSITION SENSOR
I
KNOCK SENSOR No
KNOCK SENSOR No. 2
n
I
B-R
w
B-R
2
I
Y-B
5
"<
From TEMS Computer (3-7)
From ECT ECU (2-6)
Fyom Igniter (8-8)
R-L
ox
3
TOYOTA SUPRA
rol (7M-GTE)
1
7
8
I
-
I M I T I 8.Y I A I T I B-W
)NSW
A
R-L
1)
12
I W I
R-B
VSV (For EGR)
2
1(
VSV2
THW
EGR
I
I
W
B-R
~
CHECK ENGINE
IcoMB~;"~
GR-G 5
I
B-Y
8-R
IGN17
COIL
I
-
I
'
I
BATTI
VSV (For Fuel Pressure Up)
=
From "GAUGE" Fuse 12-5)
1W
(-e
ri
t o Wire Connector)
To TEMS
Computer 13-7)
THG
G
POSITION
SENSOR
0
FP
SPD
From Defogger Relay (2.4)
From Headl~ghtRelay 15.7)
T o Speed Sensor 12-11
1 HT
OIL
I
To ECT ECU 12-61
T o 011Pressure Sender (2.3)
KNK2
I
:-f-?
L---*
8
R-L
VF1
W
0 x 1
, R-G
IGT
IGF
lGDA
IGDB
TE1
IEl
#30
#20
#lo
STJ
NE
G2
LG
LG-B
'
L.B
L.W
'
3
l
'L
B
Y
w-B
EO1
WB
E02
.
r-1
I
I
I
I
I
;
{-A
B
1
B
=
=
To Check Connector I 8 61
To Tachometer ( 2 31
From "ECU-B" Fuse
(8-2)
4
3
From "ECU-IG" Fuse
(3-6)
From "IGN" Fuse
(1-7)
11
From "CIG" Fuse
(6-4)
41
4
TI
TI
3
:
8
5
3
4
1
7
14
6
2
(
j
E/'10
CENTER AIRBAG SENSOR ASSEMBLY
--
4
5
1: i
I
3
AIRBAG INDICATOR
LIGHT (COMB. METER)
12
9
5
9/1~
IL:
m
41
CHECK
CONNECTOR
W-B
-
m
3
b
b = Located on englne block
C
=
d = Located under right front p l l a r
Located under left front pillar
I