1986 TOYOTA SUPRA Service Repair Manual

246
HOW TO USE THIS MANUAL
OVERALL ELECTRICAL WIRING DIAGRAM

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 junc-
tion blocks are shaded differently for further
clarification.).
Example:
Indicates related system.
Indicates the wiring harness and wiring har-
ness connector. The wiring harness with male
terminal is shown with arrows
Outside numerals are pin numbers.
is used to indicate different wiring and
connector, etc. when the vehicle model, engine
type, or specification is different.
Indicates a shielded cable.
Indicates and located on ground point.
The same code occuring on the next page
indicates that the wire harness is continuous. System Title
Indicates the wiring color.
Wire colors are indicated by an alphabetical code.
B = Black L = Blue R = Red
BR = Brown LG = Light Green V = Violet
G = Green O = Orange W = White
GR = Gray P = Pink Y = Yellow
The first letter indicates the basic wire color and
the second letter indicates the color of the stripe.
Indicates the connector to be connected to a
part (the numeral indicates the pin No.)
The position of the parts is the same as shown
in the wiring diagram and wire routing.
Indicates the pin number of the connector.
The numbering system is different for female
and male connectors.
The numbering system for the overall wiring dia-
gram is the same as above.
Indicates a Relay Block. No Shading is used and
only the Relay Block No. is shown to distinguish
it from the J/B.
247

Remote Control MirrorSeat Heater (for Canada)SRS (Supplemental
Restraint System)Shift LockStartingTheft Deterrent and
Door Lock ControlTurn Signal and Hazard
Warning LightUnlock and Seat Belt
Warning
HeadlightHornIlluminationInterior LightLight Auto Turn OffPower SeatPower SourcePower WindowPPS (Progressive
Power Steering)Radio and Player
ABS (Anti±Lock Brake
System)Auto AntennaABS and Traction ControlBack±Up LightChargingCigarette LighterCombination MeterCruise ControlElectronically Controlled
Transmission and A/T
IndicatorEngine ControlFog Light
5±417±325±321±11±416±8 (for 2JZ±GE)24±418±319±3
23±3 (w/ Stereo
Power Amplifier)
24±2 (w/o Stereo
Power Amplifier)1~26±120±312±212±411±28±310±3
13±321±29±214±31±27±4
Taillight
11±421±47±210±2
SYSTEM INDEX
Stop Light
248
Clock
20±315±8 (for 2JZ±GTE)
Electric Tension Reducer
20±416±3 (for 2JZ±GE)15±3 (for 2JZ±GTE)
Front Wiper and Washer
22±44±3 (for 2JZ±GE)3±3 (for 2JZ±GTE)
6±3 (for Canada)5±3 (for USA)
Ignition
9±42±4 (for 2JZ±GE)2±2 (for 2JZ±GTE)
Radiator Fan and
Automatic Air
Conditioning
26±3
Remote Window Defogger
and Mirror Heater
20±2
Rear Wiper and Washer
22±2
OVERALL ELECTRICAL WIRING DIAGRAM

1
234
1 SUPRA ELECTRI CAL WI RI NG DI AGRAM
7ACC
IG1
ST1
IG2 AM1 4
8
3 2AM2
222
221J 6 1J 4
2 1
5 3
21K 4
2A22 1
2IJ1IJ2131J 31J5
1E 81E12
34 II1 23 II1
2 EA3EA2 4
1B
B
A
A
A L
IG
S IJ29 3EA1
4IB1 2
1
B
1
A I19
IGNITION SW
50A AM1
(
for USA)
60A AM1
(
for Canada)
50A
MAINSTARTER
RELAY
7. 5A
ALT±S120A
ALT30A
AM2
BAT TERY[ST ARTERTo Theft Det err ent
ECU< 14±4>
To Engine Control Module
(
Engine and Electr onic ally
Cont rolled Transmission ECU)
< 3±5> < 4±8> < 15±2> < 16±2>To Combination
Meter< 25±6> C9
CLUTCH
START SW
(
M/T) 7. 5A
ST
P
NP2
PARK/ NEUTRAL
POSI TI ON SW
(
NE UT RA L
START SW)
(
A/ T)7. 5A
IGN10A
GAUGE
T6
CHARGE WARNING LIGHT
[TELLTALE LIGHT RH]
(
*1)
(
*2)
1
2
3
G1 B ,G2 A
GE NE RA TOR
(
AL TERNATOR)
1
123 B G1 AG 2 BLACK GE NE RA TOR(
AL TERNATOR) S2 A , S3 B
1
1 ST ARTER
A S2 BS 3 BL ACK
W
W
W WW±R W± RBB BB±WB±WBB B
B L±O
B B L±OB
B B±O Y±GY W
B±Y
B±O
W W
W W Y±GY W
Y±G B± W B± WBB±W
B
B
(
A/T)
(
M/T) (
M/T) (
M/T) (
M/T)
(
A/T) (
A/ T)(
A/T) (
A/T)
(
M/T)3
6
22 22
11 111
212
5 B±Y
B±W
B±OB±W
11EA3EA2 1
6IB2IB3 8 (
*1)(
*1)
(
*2)(
*2)
B
*2: 2JZ±GE *1: 2JZ±GTE
To Day time Running
Light Relay(
Ma i n)
< 6±1>
B(
A/ T)Y±GFrom Combination
Meter< 25±5>
Y± G W
W
Charging Starting Power Source
1B 4
W*3 : Canada
(
*3)

OVERALL ELECTRICAL WIRING DIAGRAM
1
234
2SUPRA
2IG2AM2 3
IJ11IJ19
4IB1
2
2A2 1
2 1
2 1
2 1
2 1
2 1
2A 6B 5B 4B 10B 11B 12B
1A 1B 2B 3B 9B 8B 4A3A 7B2 1
2 1
ECEC +B IGC1 IGC2 IGC3 IGC4 IGC5 IGC6
TACH IGT1 IGT2 IGT3 IGT4 IGT5 IGT6 IGF+B
IGTEXT
IGFC±
N E G1 G2 G± IGNITER
I6
IGNITION COIL NO. 1 I7
IGNITION COIL NO. 2 I8
IGNITION COIL NO. 3 I9
IGNITION COIL NO. 4 I10
IGNITION COIL NO. 5 I11
IGNITION COIL NO. 6
IGNITER
D4
DI STRI B UT OR
N1
NOI S E
FIL TER
To Dat a Link Connector 1
(
Chec k Connector)
< 3±3>
To Engine Contr ol Module
(
Engine and Electronically
Controlled Transmission ECU)
<3±5>I5
IGNITION
COIL
N1
NOISE
FILTER
To Engine Contr ol Module
(
Engine and Elec tronically
Controlled Transmission ECU)
<4±7> To Tachometer
[Comb. Meter]
< 25±6>To Engine Control Module
(
Engine and Electr onic ally
Cont rolled Transmission ECU)
<4±7>
Fr ont side of
intake manifoldFront side of
intake manifold
BR BR B R W
R±Y
R± WBR
BR
R±Y
L±O
P± B
GR±G
GR±B
B± O
R± W
G
B± OL±YY Y± B Y± G Y±R
B B±O
B±O
B±O
B±O
B±O
B±OB±WB±R
B± O
B± OG B± O
B± O
W±R W±R B±O
B
B±O B±O(
2J Z±GE)
B± O B± O(
2J Z±GE)
B±O
B±O B± O B±O B±O B±O B± OB± O
B±OB±O I19
IGNI TION SW
IGNITER
12
34A I2 BLACK
1 23456
789 111210 B I3 BLACK
(
2JZ±GTE)
1234
30A
AM2
BATTERYGND21
B±O
I2 A ,I3 B
112345C I4 BLACK3C 4C 5C
2C 1C I4 C
B±W
To A/C Amplifier
< 26±5>
B±W
1 2
To
Data Link
Connec tor 1
(
Check Connec tor)
< 4±2>B±W
Power Source
Ignition(
for 2JZ±GTE)
Ignition(
for 2JZ±GE)

MEMO

OVERALL ELECTRICAL WIRING DIAGRAM
1
234
3SUPRA(
Cont. next pa ge)
7ACC
IG1
ST1
IG2 AM1 4
8
3 2AM2
2 1
5 3 5
2 1
2
2 1J 4
22 22
224EA18EA15EA2
11IC2 12IC2 7IC2
2 BP15 4
M 6 BP1 9IJ1
4IB1
4 IJ1 12 IJ1 8 IJ1 IC210IJ16
IJ15
IJ117
IJ113
IF17
EA22 1B 4
22 22
EB BI1 2
1 2
1 2
1 2
1 2
1 2
Left quarter pillar Fr ont side of
left fender
120A ALT30A EFI NO. 2 30A EFI NO. 1
30A AM2
50A AM1(
for USA)
60A AM1(
for Canada)
15 II113 I I1 13 I J2 1J 51J31J6
1E 12
IJ118
ED Rear side of
intake manifold10A GAUGE7. 5A IGN7. 5A ST
B±O
B±RL±O
W± B
B±R L±RO W P±B V±G
L±BBRLG P± GY± L GR±R
L±RY±L
P±G
LG
L±B
B±R W± B8 562
15 16 22 1523 8 12 9 110 174 14
128 3 7 2
1 5
L±R
G
V± W
LW±BV± WGR± L YL
Y±LLG
L±R
G
V±W
L±OV± GB±Y B±YB±R
B±R B±R
B±O
B±Y
GR
B±W
B±YGR
B± Y
L±O
W± R W±R
WWB±OB± Y B±Y B±R
B± O
B± YW±B
3EFI NO. 2 REL AYEFI MAIN RELAY
(
Shor t Pin) EFPCDIFP
AB
OX2 TS
WA WB
F1 4
FUEL PUMP
D5
DA TA L I NK
CONNECTOR 2
(
TDCL)
D1
DA TA LI NK
CONNE CTOR 1
(
CHECK
CONNE CTOR)From ABS
Solenoid
Rel a y
< 19±2> ECT A/D TRC TC ABSFrom O/D Ma in
SW< 15±5>
Fr om Cr uise
Cont rol ECU
< 17±2>
From Traction
ECU< 19±4> From ABS and Traction
ECU< 19±7>
From Cr uise Control
ECU< 17±2>
From Center Air bag
Sens or As smbly< 13±3> Fr om ABS and Trac tion
ECU< 19±8>
W E1 ENGTE2 TE1TT
I19
IGNITION SW
F15
FUEL PUMP ECU +B
AB
234876 1
L BRR G B± YWR±B
R
R± W
R± G
R± Y
R± L
W± B
W± B
W± B
B B± R V±WG#10 #20 #30 #40 #50 #60S1
SFI RESISTOR(
EFI RESISTOR)I12
INJECTOR NO. 1 I13
INJECTOR NO. 2 I14
INJECTOR NO. 3 I15
INJECTOR NO. 4 I16
INJECTOR NO. 5 I17
INJECTOR NO. 6 (
SHI EL DED)
BATTERY+BFrom Center
Airbag Sens or
Assembly
< 13±3>
193
42LG P± GY± L GR±R(
A/T) B±R B±OGR B±W(
A/T) B±YW
BR BRBR
BR
W L±BL±BBR BR
B±OB
B T5
MAL FUNCT I ON I NDI CA TOR
LAMP(
CHECK ENGINE
WARNI NG LIGHT)
GR ±RY±L P±GLG
IG±(
SHI EL DED)
3 TE1 +B OX1
(
SHI ELDED)
(
SHI ELDED) R± L R± Y R± G R±WR R± B B± R V± WG L±B R± LBR
BR L±BBR
From Igniter
<2±2>
From ABS and
Trac tion ECU
< 19±7>
FP E1 1
1 111 2
222 2B±Y
B E 9 DARK GRAYA E1 0 DARK GRAY ENGINE CONTROL MODULE
(
Engine and Electr onic ally
Controlled Transmission ECU) 1E 81K4 5IB1
2A 1
From Center Airbag
Sensor Assembly< 13±3>
From ABS an d
Traction ECU< 19±8>
From Cruis e
Con t r o l E CU< 1 7± 1> P±B
11TC
From ABS and
Trac tion
ECU< 19±4>
13
VF 1
B± R Y
B±Y
2 2W
(
A/T)
Engine Control(
for 2JZ±GTE)
Power Source
(
A/T)

5
678
3 SUPRA(
Cont' d)
2 1
2 1
2 1
2 1
2 1
B B B BAAAB B B B BAABA BBBBB
B BAAABBBBBBB A BBBB AABBBBBBBB A B12
12
12
4IJ214 IJ2 5 IJ2A
10 I C19IC1 12IC1
IC14
IC18
20 IJ 1
2 1
2 1AABBBBBA BB B
B A BBBBBBAAA ABBB
121212
1
1
ED Rear side of
intak e
ma n i f o l d 52 47 72 6212257565554535258 31 35333432 12347574151617181920 11 50 492 1
42
48 71 77 29 19 20 172 40 39 38 73 60 1247633 4424466342 31
23 26 625 527 7272614 38698079342 5 3 2 1 2 3 4 31
4
1
A
A
A 3 1 6 415 16 62 41 43 64 65 4 45 66 28 BRLG P± GY± L GR±R B±R B± OGR(
A/T) B± YW
B±R B±R B±R B±R B±R
BR±B BR±B
WB±L B±RB LG P±GY±L GR ±R(
A/T)P
G±BG± Y G±R W±L B±R
B± R B± R
B± R B± R L± WB±OGR B±W(
A/T) B±Y BR±B BR±BL±Y O(
A/ T) BR±Y GR±RY±L
GR ± R
R±L R±LBR±W BR±WL±BG V±W R±WB±O GR ±B GR ±GP±B L±O
R± Y B±R V±Y G±O G± WR± G BR±BL±RP
V R±BR R± WR±GR±YR±L Y±RW W
B± R
OX2 HT2 W DI FPCIGT1
IGT2IGT3
IGT4IGT5
IGT6IGF
+BISC1
ISC3ISC2
ISC4 OD1A/C
EGREVAP
#60 #50 #40 #30 #20 #10 ABS KNK1 KNK2BR± B
B±R B±R
W(
A/ T)
V7
VSV(
for Intake
Air Cont rol Valve) V4
VSV(
for Ex haust
Bypass Valve)
V5
VSV(
f or Exhaust Gas
Control Valve) V6
VSV
(
for Fuel Pres sur e Up)
A5
A/ T FLUI D
TEMP. SENSOR E1
EGR GAS TEMP. SENSOR
E3
ENGINE COOLANT
TEMP. SENSOR
(
EFI WATER
TEMP. SENSOR)
V8
VSV(
for Waste
Gat e Valve)From Cruise Control ECU< 17±3> From A/C Amplifier< 26±5> Fr om ABS and
Tr act io n ECU
< 19±8>
From
Telltale
Light RH
< 25±1>
From Park/Neutral
Pos i t i on SW
(
Neutral Start SW)
(
A/ T)
<1±3>
From Clutch Start
SW(
M/T)
<1±3>
OX H T
(
SHI ELDED)
(
SHIELDED)
H5
HEAT ED OXYGEN SENSOR
(
MAIN)E+B
OX1 HT1 STA VF1 TE2 TE1 TTSP1 VSV1 VSV2 VSV3 FPU
PMCIGSW
M± R ELNSW
BATTTHW OIL THG
IDL2VTA2 (
SHI ELDED)
(
SHIELDED)
(
SHIELDED) R±L R±Y R±G R± WR R±B B±R V±WG L±B R±LBRBR
BR B±R B±R 1
32
4R± L BR± WB±RV B±RW
(
SHIELDED) V2
VSV(
for EGR)
V3
VSV(
for EVAP)
HT
OX+B
E1 H11
HEATED OXYGEN SENSOR
(
SUB)
I1
I D LE AI R C ON TR OL
VALVE(
ISC VALVE)
Fr om Ignit er
<2±2>
L±R
L±R
BR±B BR±B
BR±B B±RP± L Y±RBR
G±W
BR± B
R
Y
L±R
B±Y
B±W
R±Y R
W± GWO B± WL B±RBRB WO P±LBR BR
BR
BR±BR GR ±RL±R L±RBR±B BR±B
BR(
SHI ELDED)
(
SHI ELDED)
ACMG G1G1±G2G2±NENE ±
EFI+EFI±
TRC+TRC±
E1 EO1 EO2 THA E2 VG E2 PI M VC
EL S
TACOPM1
VCCVT A1
IDL1E2 STP THA VG E2 1 E2
B
From A/C
Magnet ic
Clutch
Relay
< 26±2> To Trac tion ECU
< 19±6>T o Cr ui s e Co nt r ol
ECU< 17±3>
To Tr act ion ECU
< 19±6>
T14
T URBO P RE SS URE
SENSOR
S5
SUB THROTTL E
POSITI ON
SENSORT2
THROTTL E
POSI TI ON
SENSORM1
MASS AI R
FLOW(
AI R
FLOW METER)
Fr om
St op Light
SW< 7±4> To Combination
Meter< 25±6>
To A/ C
Amplifier< 26±5>
From
Diode(
for
Idle±Up)
< 20±2>
A
A
AAA
A
A
BR
(
SHI EL DED)(
SHI ELDED) (
SHI ELDED)
O L B±R
B±W
WC3
CRANKSHAFT
POSITI ON SENSOR
C2
CA MSHAF T
POSITI ON
SENSOR NO. 2 J2
JUNCTION
CONNECTOR
K2
KNOCK SENSOR
(
on Rear Side)
K1
KNOCK SENSOR
(
on Fr ont Side)C1
CA MSHAF T POS I TI ON
SENSOR NO. 1BR
BRFrom Tr act ion
ECU< 19±6>
B±R
ENGINE CONTROL MODULE(
*1) E9 B ,E10 A
A
13
W± RNE O
OLBR
O B± W
B± R B± R
*1 : Engine and Electrolnically
Contr olled Tr ans mis sion ECU
(
A/T)
(
A/ T)
Engine Control(
for 2JZ±GTE)