1986 TOYOTA SUPRA Service Repair Manual

OVERALL ELECTRICAL WIRING DIAGRAM
1
234
17 SUPRA
7ACC
IG1
ST 1 AM1 4
1J 41J 5
221B 41E 12 1H12 1I9
21 I I1
11 I F1 4 IF22 1 9A
6B
IE 1H 13
1J 116 I B6 7 IB6 10 IB6 9 IB6 15 I B6
8IB6 17IB64 3
M10IJ2 11IJ2 3IJ1
1 1H 81I10 1B 2WW
W± LP± B P± BP±BO YOYB±R W± RW
L R±YP± G LG±RR± B G±RLG B±WBR± B
P±BO G±R
W± B P±G LG±RR± B G± RLGR±L BR± B
W± B W± B
B
P±B O G±R
W±B
BR± B 13 18 19 25 24 23 11 12 10 26 22
3217 65 515
1787 2 14 15 1
4
R± L
921 3
R± L BR±BR
R±L BR± BR BR±W
W± L
B±Y
I19
IGNITION SW10A
GAUGE10A
ECU±IG
CRUISE CONTROL
I NDI CA TOR L I GHT
[COMB. METER]C1 5
CRUI S E CONTROL
CL UTCH S W(
M/T)
TC PI D B BATT
GND CCS CMS VR3 VR2 VR1 MC MO L L±
60A POWER 50A AM1(
for USA)
60A AM1(
for Canada)
120A ALTBATTERYRESUME/
ACCEL
SET/
COAST
CANCEL
MAIN
C1 4
CRUI S E CONTROL
MA I N SW
[COMB. SW]
Left kick
panelC4
CRUISE CONTROL ACTUATOR10A
ECU±B15A
STOP
ST P+
ECT OD IDL PKB
S1 1
STOP LIGHT SWP5
PARKING BRAKE SW
C10 A , C12 B
2A 1
Fr om Telltale Light RH
< 25±1>From Stop Light SW
<7±4>20
SPD STP±16P G±W
13 9 8 7 6 5 4 3 2 1 101112
16 11 10 9 8 5 4 3 2 112131467 15B C12A C10 BLUE CRUISE CONTROL
I NDI CA TOR L I GHT
[COMB. METER]
C16
CRUISE CONTROL ECU
From Engine Contr ol Module
(
Engine and Electronically
Controlled Transmission ECU)
< 15±2> < 16±2> To Engine Contr ol Module
(
Engine and Electronically
Controlled Transmission ECU)
<3±6><4±8><15±2><16±2> From Engine Contr ol Module
(
Engine and Electronically
Controlled Transmission ECU)
< 3±8> < 4±8>
1 11
2 22
To Dat a Link Connect or 1
(
Chec k Connect or)
<3±3><4±2> To Dat a Link Connect or 2
(
TDCL)
<3±2><4±2>
To Dat a Link Connect or 2
(
TDCL)
<3±2><4±2>Fro m
A/ T Indicat or SW
2 2W
Power
SourceCruise Control2
W
G± R
(
M/ T)(
M/T)(
A/T) (
A/T)
(
A/ T) (
A/ T)

1
234
18 SUPRA
7ACC
IG1
ST1 AM1 4
1J 4
6B 5B 4A 3A 1B
2IB62
1B
5
1J
1H 81K13 1E12
15 A 2 A 16 B 8B 7B 1B 9B 3A 16 A 10 A 18A 14A 26A 13A 1A 6A 9A 22A23A 24A 11A 15B 5A6B 12 B 3B 10 B 12 A 25 A 13 B 1B 4BB
2A2B 6B 3B 4B 1B 5B
4A 3A 1A21
IG 21 112 2
W± B
W± B W± B
W± B
P
L YG± W
B±O
R± L
W±L
B±R
W± R
GND GND RR+ RSS RL ± RL + FR± FR+ FSS FL ± FL + MT2
4 4
B± R
IG1GND
GST GS2 GS1
8IC2 3IB5 2IB5 3IC2
L±WL W± B
B W± BL±WL
R R
4 IB5 5 IB5 1 IB5
WB B
WRRL L
RR±
V LG LG
V W± B
SF R SFL SRR SRL AST
B±RL
15 IJ1 21 II1
P±B P± B
P± B
YY
B±Y
L
2 1
34A A6 BLACK
123
456B A7 GRAY
12
341
4
5 2
3
6
V± G4BD/ G 13 IB6 1 I B6
M
L±W
Y
B±Y
P
P±B
Y±G Y±GP± BP B± YY L±W
A A8 GRAY BA9 GRAY ABS RELAY ABS ECU AST SRL SRR SFL SFR MT
L±B
V±Y
VVV± YL±B
GND BS MR R± SR
ABS ACTUATOR BS BM6IB5 ABS RELAY
P±B
120A ALT
222
EAA10
ABS SPEED
SENSOR FRONT LH
ABS ACTUATORA1 1
ABS SPEED
SE NS OR FR ON T R HA31
ABS SPEED
SENSOR REAR LHA32
ABS SPEED
SENSOR REAR RH(
SHI ELDED) (
SHI ELDED) (
SHI EL DED) (
SHI EL DED)
To Dat a Link Connect or 2
(
TDCL)
< 4±2>
ABS ACTUATOR ABS ACTUATOR
ABS ACTUATORABS ECU MR R± SRSR
SR
SR T S TC BATW I G1 GS T GS2 GS 1 STP6
3 2 1
60A ABS NO. 1
BATTERY
W W± LR
W WA10A
ECU±B10A
ECU± I G10A
GAUGE
A2 3
ABS LATERAL
ACCEL ERATI ON SENSOR I19
IGNI TION SW
+B S W
50A AM1 60A POWER
Fr ont s ide of
right fender
BR±B
W± B B±RBR±W
Ri g ht
kic k panel L
W± BW±L
B±Y
9IC2 A8 A , A9 B
IF111
P± B
W
A1 8 B , A1 9 A
A6 A , A7 BIF22
L
T5
A BS WARNI NG LI GHT
[TELLTALE LI GHT LH]
1 111 222
2
1
12345678
9 1011121314151612
34567891011 12 13
14 15
16 17 18 19 20 21 22 2324 25 26 B A1 8 AA19 6EA1
16 IJ 1
To
Data Link Connec tor 1
(
Chec k Connector)
< 4±2> To
Data Link Connec tor 1
(
Chec k Connector)
< 4±2> To
Data Link Connec tor 2
(
TDCL)
<4±2> To
Data Link Connec tor 1
(
Chec k Connector)
< 4±2>
B±RL
Fr om
Data Link Connec tor 1
(
Chec k Connect or)
<4±2>
14 B
BR±WTo Parking
Brake SW
< 25±7>PKBFrom Stop Light
SW< 7 ±4 >
(
SHI ELDED) (
SHI EL DED) (
SHI EL DED)
L
5 IB6 10 IB5 9 IB5 8 I B5 7 IB5 6 IB61A
+BM
BM
2A 24
2 22
W
W
E
Power SourceABS(
Anti±Lock Brake System)

OVERALL ELECTRICAL WIRING DIAGRAM
1234
19 SUPRA
7ACC
IG1
ST1 AM1 4
1H 81J41J 5
22 22255 5 55 5 55
55 1B 21B41E 12 1K13
55
555 5551IB6 18IB6 16IB5
3 4
2 1
4 6
3 1
2
2A55
EBM4 3
2 1
EA9A
7B
2 IF2 12 IF2 1 IF2
16 IJ 1 5
45
2
3 61
To Data Link Connector 1
(
Check Connector)
<3±3>To Data Link
Connec tor 2
(
TDCL)
<3±2> T5
TELLTALE
LIGHT LH
ABS
TRAC OFF TRACTION I NDICATOR
LI GHT [ COMB. MET ER]
I19
IGNITION SW10A
GAUGE10A
ECU± I G
10A ECU±B30A ABS NO. 2
50A AM1(
for USA)
60A AM1(
f or Canada)
60A POWER 60A ABS NO. 1
120A ALT 7. 5A TRACBATTERY
T4
TRACTION PUMP
AND MOTOR A BS MOT OR
RELAYABS SOLENOID
RE L AY TRACTION
SOLENOID RELAY
TRACTION
MOTOR RELAY
TRACTION INDI CATOR L IGHT
[COMB. METER]
13 9 8 7 6 5 4 3 2 1 101112
16 11 10 9 8 5 4 3 2 112131467 15A C10 BLUE
B C12TRACTION ECU
12
34567891011 12 13
14 15
16 17 18 19 20 21 22 2324 25 26123456
7 8 9 10 11 12 A T9 BT10
ABS AND TRACTION ECU
123456
7 8 9 10 11 12C A22 12
34567891011 12 13
14 15
16 17 18 19 20 21 22 2324 25 26 A A20
12345678
9 10111213141516B A2 1
ABS ACTUATOR
2 1
34123
456 A A 6 BLACK BA7 GRAY
To Dat a Li n k
Connector 1
(
Chec k Connector)
<3±3>
W± R
B±R
L±Y
V
L±B
B±R
LG±R
W
L
V± Y
R± W
L±W
L
G± B
W± G RR
V±Y V±Y V±YB±R
L±Y
R
Y
L±Y
W
W±LL V± YV±Y L±W W± BV±Y R± W W± B
W± RWYB± RR LG±R
B± R
R
L±B
V
R L±B B±R LG±R
B±YYL±YW±B
B V±Y W±B Y Y
Y
LG±RLG±RL WWW
L L
LG±RL
W± G
R
Fr ont side of
r ight f ender Fro nt s i de o f
left f enderG±B 22
2 22
2
3 1 11
1 11
1284 2
(
Cont. next pa ge)
16EA1
B±RC10 A , C12 B
3IB3
2 22
W W
Power SourceABS and Traction Control

5678
19 SUPRA(
Cont' d)
26A
12A
13A
23A
24A
10A
8B
3B
9B
2B
1B
7B
20A
6A
19A
7A
4A
22A
16A
21A
9A
17A
3A
18A
5C
6A
20A
8A
5A
18A
17A
4A
9B
1B
2B
10B
25A
4C
9C
12A
8C
2C 1
A15
A2
A24
A7
A13
B15
B6
B4
B5
B7
B8
B11
B14
B16
B6
C12
C 2IB6
4IB2
5IB26 IB2 1 IB5
2IB53IB5 3IC2
8IC29IC210 IB2
11 IB2
IE2 1
2 1
1 2
1 2
IG11A
6B
5B
4B
10B
11B
12B
14A
5A
9A
1C
13A
26A
7C
21A
14A
22A
10A
10C
6IB6
7IB58IB5
9IB510 IB5
5IB614 IB6
4IB3
4 2
3 14631
8IJ2
IF111
II1 21
11
A23
A
2 1
M
IE EA 5B 1B 4B 3B 6B 2B
1A 3A 4A 2IJ2
Fro nt s i de of
right fender Right k ick panel Lef t kick panel
Fr om Stop Light
SW< 7±4> To Parking Brake
SW< 25±7> To Data Link Connec tor 1
(
Check Connec tor)
< 3±3>
GND WAGST
GS2GS1
FL+ FL± FR+ FR± RL+ RL± RR+ RR±GND
GNDGND
R± SRC SMC MT SFR SFL SRR SRL AST TMR MTT LBL D/GCS W GND BCM B± B A A± ACM TC PKBST P ABS0
TRC0 BRP
BRC THFA
BRFA RL 0
RR0 FL 0
FR0 IDL2 IDL1
TRC+ TRC±
EF I + EF I ±
NE O IND
WT BM
BAT IG1
TSRSR MR IG1
BAT FR0FL 0
RR0RL 0
BRFATHFA
BRCBRP
TRC0ABS0 STP PKB TS TC
To Engine
Contr ol Module
(
Engine and
Electronically
Co nt r ol le d
Tra nsmi ss i on
ECU)
<3±8><15±4>
A23
ABS LATERAL
ACCELERATION SENSOR
A10
ABS SPEED
SENSOR FRONT LH A1 1
ABS SPEED
SENSOR FRONT RHA31
ABS SPEED
SENSOR REAR LH A3 2
ABS SPEED
SENSOR REAR RH T3
TRACTION BRAKE
ACTUATORTo Brak e Fluid Level War ning
SW< 25±7> To Data Link Connec tor 2
(
TDCL)
<3±2>
ABS ACTUATOR
T8
TRAC OFF SW
ABS AND TRACTI ON ECU A2 0 A , A21 BTRACTION ECU T9 A ,T10 B
S4
SUB THROTTL E ACTUATOR
To Data Link Connec tor 2
(
TDCL)
<3±2>
To Da ta L i nk
Connect or 1
(
Chec k Connect or)
<3±3>
Left kick panel V± Y
R± W
L±W
L
G± B
W± G V±Y V± Y V±Y
R±W
L±W
L
G±B
W± GW
L W± R
B± R
L±Y
V
L±B
B± R
LG±R
P±B P± B P±B P± B
R± B
R±W
B±Y
V± R
P±G
P±B
GR±R
Y±B
O
LG±B G± W BR±W
G±W BR±WY P± B P±BBRG WL RY
(
SHI ELDED)W±B W± BLG
W±B W±B W±B
W±B
L L±W Y± G
P± B
P
B±Y
Y
L±W L±WY B±YP P± B Y± G G± B W± G
V
V± Y
V±Y
W± B
W± B
W± B
P
LR± W R± W V
V± Y R± WV± G
R± W
W± B
(
SHI ELDED)
(
SHI ELDED)
LG
V
L
R
B
W WB RL V LG(
SHIELDED)
(
SHIELDED)
(
SHIELDED)(
SHI ELDED)
(
SHI ELDED)
W±B B±O
R± L
W± L
L
B±R GR ±R
R
O
W±R
B
W
P± L
W
LG±R
L±Y
W±R
B±RP± L
W±R
B±R
V
L±B
B±R VP±B
52 B±R
GS1
GS2 GST IG1 4 123
6
IB613
V±Y
A6 A ,A7 B,A22 C 15 IJ1
Y W± B
B
12EX0
14 IJ1Y±R Y±RTo Engine Cont rol Module
(
Engine and Electr onically
Contr olled Tr ans mis sion ECU)
< 3±7> < 15±4>
Fr om St op Light
< 7±4> To Parking Brake
SW< 25±7>
Fr om Thr ott le
Posit ion Sens or
< 3±8> Fr om Sub Thrott le
Posit ion Sens or
< 3±8>
ABS and Traction Control

OVERALL ELECTRICAL WIRING DIAGRAM
1
2
34
20 SUPRA
7ACC
IG1
ST1 AM15
4
1J 51B2
1J 4
222
441C 7
21
53
5IC21BO1
8IF11H 12 1K7
44
2A
11A
1B
1C 1B 4R
P±L
B±Y
B
W± LWR
WY W± L W±LB B
B BBB B
P± LR
BB±W
B
I19
IGNITION SW
30A DEFOG
10A GAUGE
REAR WINDOW
DEFOGGER
RELAY10A
MI R± HT R
60A POWER 50A AM1(
for USA)
60A AM1(
for Canada)
120A ALT 7. 5A DOME
BBATTERY
N2
NOISE
FILTERNOI SE
FIL TER
REAR WINDOW
DEFOGGERR1 8 B , R19 C
To A/ C Amp li fi e r
< 26±5>NOI SE
FIL TER 1N3 A 6BM1B
2 1
3 5
1E 61E21E11 1I31E17 1C61K13
1H 4 1D 11B
1J
IJ 1
IE IHBI IG 1D 1013 IL13IF1
10 IF3
16 IL114 I I1 4 II 1
2 1
2 1 22
111 2 6 5
4 3 524
2 211
2 3 1
A ASPD E SOL ± SOL+11
1K
32 I I1
G± OL±RR G± OP W±B LG±R LG±R
LG±R LG±R B±R B±R
W± B W± B
B±W B±W
W±B
R±Y G±O
W± B
L±R L±R
W± B
W± B W± B L±RTo Eng i ne
Contr ol Module
(
Engine and
Elec tr onically
Co nt r ol le d
Transmission
ECU)
<3±7><4±7>
10A
ECU±I G 10A
PANEL 15A
CIG
B
L±R From Telltale Light RH
< 25±1>
P4
PPS ECU
B±R
C8
CLOCKT1 2
RH
TENSION REDUCER SOLENOID
T1 1
LH
D8
DI ODE(
f or I dle±Up)
R1 7
RH
MI RROR HE AT ER
[ RE MOT E C ON TR OL MI RR OR ]
R1 6
LH
J1
JUNCTION
CONNE CTORG±O
1 1 1
1 22 22
Ri gh t ki c k
panel Left quarter
pillar Right k ick panel Left kick panelSee Taillight System
<7±1> TAILL IGHT
RE LA Y 8 5
1 A N3 NOISE FILTER
L±RR± Y
W± B
W± BB6
LHB7
RH
P1
PPS SOLENOIDBUCKLE SW
REAR WINDOW DEFOGGER
B R1 8 GREE N CR1 93
4
11 22 2
W
W
Electric Tension
Reducer PPS(
Progressive
Power steering) Clock Rear W indow Defogger
and Mirror Heater Power
Source
1 2

1
234
21 SUPRA
IJ 4
1B 41E 21I14 1I9 IJ 81J 5
27ACC
IG1
ST1 AM15
4
1 2
1K 12
1J 11H 16
IC17
3BQ1
3 1
4 2
2 14BQ1
3 1
4 2
2 1 6IC1
2BQ1B WW± B W± BW± B VW±BW± B
B± R BB
BB W±BW±BW±B W±B W± B W± B
L
W± B LW± B Y Y± R
YB
Y±R L±R B±Y
P± L
WL±R G±W
C6
CIGARETTE
LIGHTER2
A24
1 4 62 1 5
S12
SEAT HEATER
(
for Driver' s
Seat) S14
SEAT HEATER
RELAY
(
for Driver' s
Seat)
6 KLS+ E ACC IG STP
BATTERYJ1
JUNCTION
CONNECTORS7
SHIFT LOCK ECU 15A
CI G10A
ECU± I G15A
SEAT± HTR
S1 5
SEAT HEATER REL AY
(
for Passenger' s Seat)
From Stop Light SW
<7±4>
K3
KEY I NTERL OCK
SOLENOI D
S6
SEAT HEATER
SW
S1 3
SEAT HEAT ER
(
for Pass enger' s Seat)
A1 I19
IGNITION SW
B
B Y± R
2A 12 2
1
1120A
AL T 50A AM1
(
for USA)
60A AM1
(
for Canada)
IH IE BIRight kick panel Left k ick panelP2 PP1
SL S± SL S+
G±R
G
G±W L L±R
SHI FT LOCK
CONTROL SWSHIFT LOCK
SOLENOI D
IG Left quar ter pillar Right kick panel 2 2
W
Power
SourseCigarette
LighterShift Lock
W± B
Seat Heater
(
for Canada)

OVERALL ELECTRICAL WIRING DIAGRAM
1
234
22 SUPRA
7ACC
IG1
ST1 AM1 4
1J 41J 5
2
1K 121K 12
1J 1 1B 41H 5
1IC2
4BM1 3BM1
13 IC2 4 IC2BM15
BO14
BO12
BO15 1
1A
2A
1J 1
IEMM
IB22
IB28
IB29
IE EB 1 IB2 7 1B2
OFF
INT
LOW
WA SH E RW B +S +1 +2 E
C14
FRONT WI PER AND
WASHER SW
[COMB. SW]F9
FRONT WIPER
MOTORM
WASHER1
OFF
INT
ON
WASHER2+1R C1R E WR
BATTERYC14
REAR WI PER AND
WASHER SW
[ COMB. SW]50A AM1(
for USA)
60A AM1(
f or Canada)
120A ALT
R15
REAR WIPER MOTOR AND RELAYREAR WI PER
RE LA Y RE AR WI P ER
MOTORW1
WASHER MOTOR
W± B W± B W±B
GR ± G
L±R
L±W
L
L±O GR±GL±RL L±W
LG L±O
L
W± B W± B
B WLG±R LG±RLG±B LG±B
WLL
LLL
LG±R
LG±B LG±B LG±R
LGL L
L L
2365
13 7 4 18 8 2
110 23
2 1
163
1 1
+B
LM
SM
LS
C1
C1 L BSM +B LM
E +2 +1 B +S L
16 L
LL±W B±Y
20A
WIPER
I19
IGNI TION SW
L
R
11
1 2 2
Lef t kic k panelHIGH
Left kick panel Front s ide of
left f ender MIST
WI PER REL AY Y
2 2
W
Power
SourceRear W iper and W asher Front Wiper and Washer

1
234
23 SUPRA
7ACC
IG1
ST1 AM15
1J 41J 8
1H 3
1B 410IE1 11IE1 2IF3 3IF3
3A6D 2D 1D 5D
4A 2C 9C 1C 8C
2ID1 8ID1 5 IL1 1IL1
IF 7. 5A
RA D
NO. 2R1 3
REAR SPEAKER LHR1 4
REAR SPEAKER RH
1122
2
22
2 1 1 +B 1
GN D ACC
FL+ FL± FR+ FR±RR± RR+ RL ± RL+
F10
FRONT TWEETER
(
SPEAKER)
LHF1 1
FRONT TWEETER
(
SPEAKER)
RH 1 1
F1 2
FRONT DOOR
SPEAKER LHF13
FRONT DOOR
SPEAKER RH
PPV
P V
P
BR V LG LGL L
V LG LGL L
B B Y R W W
R
Y
B
W
Left kick
panel BATTERY I19
IGNITION SW
2 28IB1
2IH2 6IH2 1IH2 3IH2
3A
6A 6A
2A 2A4C 11C 3C 10C
2IH1 6IH1 1IH1 5IH1 4A 3D 4D 9D 8D14 C 5C
2IH3 1IH3
9IE1 13IE1 +B 2
WF+ WF±
11 IF3
P V LGL LG±B LG±R
BRLG±B LG±R
LG±B LG±R
GR
W
L±YL±Y L±Y
L±YB Y R W
L±Y
P± L
W2
WOOFER(
SPEAKER) STEREO POWER AMPLIFI ER
2 134567
8 9 10 11 12 13 14 15 16C S10 BLACK
12 (
*1)
(
*2)A S8
1111 B
11 B12 B
12 B4B
4B5B
5B6B
6B13 B
13 B14 B
14 B10 B
10 B9B
9B3B
3B1B
1B
12135671415 341
8IH1 9IH1
From Auto Antenna
Cont rol Relay< 24±3> FADE GND BEEP MUTE F.L F.R R.L R.R ACC B AMPFADE BEEP MUTE F. L F. R R. L R. R GND OUT OUT AMP+
ANTB GYL R W BR (
SHIELDED) V LG (
SHIELDED)P±L P± LP± L
B±R B±RP± L
R6
RA DI O A ND PL AY ER
8(
*1)
(
*2)
1 11
222
2A 1
50A AM1(
for USA)
60A AM1(
for Canada)
120A ALT
20A RAD NO. 1
*1: w/Woofer(
Speaker)
*2 : w/ o Woof er(
Spe ake r)
12
3456
S8
STEREO POWER AMPLIFIERA,S9 B,S10 ,CDD S1 0
12 34
5678910 ST EREO POWER AMPLI FI ER
6 4 3 2 1
7 8 9 10 11 12 145
13
6 4 3 2 1
7 8 9 10 11 12 145
13 B
*1S9 BLACK
B
*2S9
2 2
WPower
SourceRadio and Player(
w/ Stereo Power Amplifier)