1986 TOYOTA SUPRA radio

IF VEHICLE IS EQUIPPED WITH MOBILE
RADIO SYSTEM (HAM, CB, ETC.)
If the vehicle is equipped with a mobile communication sys-
tem, refer to the precaution in the IN section.
AIR INDUCTION SYSTEM
1. Separation of the engine oil dipstick, oil filler cap, PCV hose,
etc. may cause the engine to run out of tune.
2. Disconnection, looseness or cracks in the parts of the air
induction system between the throttle body and cylinder
head will cause air suction and cause the engine to run out
of tune.
ELECTRONIC CONTROL SYSTEM
1. Before removing SFI wiring connectors, terminals, etc., first
disconnect the power by either turning the ignition switch
OFF or disconnecting the negative (±) terminal cable from the
battery.
HINT: Always check the diagnostic trouble code before dis-
connecting the negative (±) terminal cable from the battery.
2. When installing the battery, be especially careful not to
incorrectly connect the positive (+) and negative (±) cables.
3. Do not permit parts to receive a severe impact during removal
or installation. Handle all SFI parts carefully, especially the
ECM.
4. Do not be careless during troubleshooting as there are
numerous transistor circuits and even slight terminal contact
can cause further troubles.
5. Do not open the ECM cover.
6. When inspecting during rainy weather, take care to prevent
entry of water. Also, when washing the engine compartment,
prevent water from getting on the SFI parts and wiring
connectors.
7. Parts should be replaced as an assembly.
8. Care is required when pulling out and inserting wiring
connectors.
(a) Release the lock and pull out the connector, pulling on the
connectors.
(b) Fully insert the connector and check that it is locked.
± ENGINESFI SYSTEM (2JZ±GTE)EG±261

IF VEHICLE IS EQUIPPED WITH MOBIL
RADIO SYSTEM (HAM, CB, ETC.)
If the vehicle is equipped with a mobile communication sys-
tem, refer to the precaution in the IN section.
AIR INDUCTION SYSTEM
1. Separation of the engine oil dipstick, oil filler cap, PCV hose,
etc. may cause the engine to run out of tune.
2. Disconnection, looseness or cracks in the parts of the air
induction system between the throttle body and cylinder
head will cause air suction and cause the engine to run out
of tune.
ELECTRONIC CONTROL SYSTEM
1. Before removing SFI wiring connectors, terminals, etc., first
disconnect the power by either turning the ignition switch
OFF or disconnecting the negative (±) terminal cable from the
battery.
HINT: Always check the diagnostic trouble code before dis-
connecting the negative (±) terminal cable from the battery.
2. When installing the battery, be especially careful not to
incorrectly connect the positive (+) and negative (±) cables.
3. Do not permit parts to receive a severe impact during removal
or installation. Handle all SFI parts carefully, especially the
ECM.
4. Do not be careless during troubleshooting as there are
numerous transistor circuits and even slight terminal contact
can cause further troubles.
5. Do not open the ECM cover.
6. When inspecting during rainy weather, take care to prevent
entry of water. Also, when washing the engine compartment,
prevent water from getting on the SFI parts and wiring
connectors.
7. Parts should be replaced as an assembly.
8. Care is required when pulling out and inserting wiring
connectors.
(a) Release the lock and pull out the connector, pulling on the
connectors.
(b) Fully insert the connector and check that it is locked. EG±190
± ENGINESFI SYSTEMS (2JZ±GE)

29
Position of Parts in Instrument Panel
E 8 Electronically Controlled Transmission Pattern O 5 O/D Main SW and A/T Indicator Light (for Shift
Select SW Lever)
E 9 Engine Control Module (Engine and Electronically
Controlled Transmission ECU) P 4 PPS ECU
E 10 Engine Control Module (Engine and Electronically P 5 Parking Brake SW
Controlled Transmission ECU)
E 11 Engine Coolant Temp. Sensor (Water Temp. Sensor) R 4 Radio and Player (w/o Stereo Power Amplifier)
(for A/C System) R 5 Radio and Player (w/o Stereo Power Amplifier)
R 6 Radio and Player (w/ Stereo Power Amplifier)
F 10 Front Tweeter (Speaker) LH R 7 Remote Control Mirror SW
F 11 Front Tweeter (Speaker) RH R 8Rheostat
G 3 Glove Box Light S 6 Seat Heater SW
G 4 Glove Box Light SW S 7 Shift Lock ECU
S 8 Stereo Power Amplifier
H 10 Hazard SW S 9 Stereo Power Amplifier
H 11 Heated Oxygen Sensor (Sub) S 10 Stereo Power Amplifier
H 12 Heater Control SW S 11 Stop Light SW
H 13 Heater Control SW S 16 Sub Heated Oxygen Sensor
(for California)
I 18 Ignition Key Cylinder Light
I 19 Ignition SW T 5 Telltale Light LH
I 20 Integration Relay T 6 Telltale Light RH
T 7 Theft Deterrent ECU
J 1 Junction Connector T 8 TRAC Off SW
J 2 Junction Connector T 9 Traction ECU
T 10 Traction ECU
K 3 Key Interlock Solenoid T 13 Theft Deterrent ECU
K 4 Kick Down SW
U 1 Unlock Warning SW
N 2 Noise Filter

50
POWER SOURCE (Current Flow Chart)*1: (FOR CANADA)
*2: (FOR USA)
*Page Nos. of
Related Systems
Parts
Code or
Location
CB or FuseN3 208
Location
Noise Filter
* These are the page numbers of the first page on which the related system is shown.
The part indicated is located somewhere in the system, not necessarily on the page indicated here.


7.5A HTR
7.5A IGN
7.5A RAD No. 2
7.5A ST
7.5A TURN
10A ECU±B
10A ECU±IG
10A GAUGE
10A MIR±HTR
10A PANEL
10A TAIL
15A CIG
15A SEAT±HTR
15A STOP
20A WIPER
30A DEFOG
30A DOOR
7.5A ALT±S
7.5A DOME
7.5A DRL
7.5A TRAC
15A FOG
15A HAZ±HORN
15A HEAD (LH) *2
15A HEAD (LH±LWR) *1
15A HEAD (LH±UPR) *1
15A HEAD (RH) *2
15A HEAD (RH±LWR) *1
15A HEAD (RH±UPR) *1
20A RAD No. 1
30A ABS No. 2
30A EFI No. 1
30A EFI No. 2
30A FAN
50A HTR
50A MAIN
60A ABS No. 1
60A POWERO2 O5 P2 P4 P5 P6 P7 P8 P9 P10 P11 P12 R1 R2 R3 R4 R6 R7 R8 R9 220122
140
150
60
70
11 6
140
174 64
82
130
150
220
181159
164
220118 136 136 136 136 190 190 228 228 228122
210
218122 188 122 116
Oil Pressure SW
O/D Main SW
Park/Neutral Position SW
(Neutral Start SW), Back±Up
Light SW and A/T Indicator
Light SW (for A/T)
PPS ECU
Parking Brake SW
Personal Light
Power Window Control
SW RH
Power Window Master SW
and Door Lock Control SW LH
Power Window Motor LH
Power Window Motor RH
Power Seat Control SW
(for Driver's Seat)
Power Seat Motor
(for Driver's Seat Slide Control)
Radiator Fan Motor
Radiator Fan Relay No. 1
Radiator Fan Relay No. 2
Radio and Player
(w/o Stereo Power Amplifier)
Radio and Player
(w/ Stereo Power Amplifier)
Remote Control Mirror SW
Rheostat
Back±Up Light LH
[Rear Comb. Light LH]
[LOCATION](1): J/B No. 1 (See page 20)(2): R/B No. 2 (See page 19)(3): R/B No. 4 (See page 23)
20 22
23

123
*
2 :W/OSTEREOPOWERAMPLIFIER *1 :W/STEREOPOWERAMPLIFIER
I19 I14 I14
I12
I12
2 1
3 2
1 2
8 20
9 2
104
13 12
A A2 1
IH2 5I8
IF3 10
IHIH1 10 G±OG±O G±O G±O G±O
G±O
G±OG±O G±O
W±BG±O W±G
W±B
G±O
G±O
G±O
G±O
G±O
G±O
G±O
G±O
G±O W±G
W±G
W±G
W±G
W±G
W±G
W±G W±GW±B W±BW
G±O G± O
G
3 21 BBB BBB
B W±G
(
*
1)
(
*
2)
A 10
B 5
B
GLOVE BOX LIGHT G3
HAZARD SW H10
CIGARETTE LIGHTER
ILLUMINATION C7
HEATER CONTROL SW H12 RADIO AND PLAYER(
*
2)
RADIO AND PLAYER(
*
1) R6
ODO AND TRIP ILLUMINATION
[TELLTALE LIGHT RH] T6
C10
M ETER ILLUMINATION
[COMB. METER]
J1
JUNCTION CONNECTOR
JUN CTION
CONNECTOR J1
ILL± T
E RHEOSTAT
(
*
2)
(
*
1)
GLOVE BOX
LIGHT SW G4
B R4 ,R5
A
I3:M/T
I14 : A/T
R8
(
*
1) (
*
1)

211
* 2 : W/O STEREO POWER AMPLIFIER *
1 : W/ STEREO POWER AMPLIFIER
B 8A 8
B 9A 1
B 3A 3
B 4A 4B 10B3 B9 B1 A2 A6 A3
I24
I16 IH1 8IH19
IF IF3 11A 4 GR
L±Y
L±Y
GR
P±L
P±L
B±R
B±R(
*1)
(
*1)
(
*2)
(
*
2)
(
*1)
(
*2)
(
*
1)
(
*
2)
B±R
B±R
P±L
P±L
GR
V
L±Y
LGP±L
P±L
BR
GR
(
*1)
L±Y
(
*1)
L±Y
(
*1)
P±L
(
*1)
V
(
*1)
LG
(
*1) (
SHIELDED)
(
SHIELDED)
(
*
2)
(
*
1)
(
*
2)
(
*
1)
(
*2)
(
*1)
(
*2)
(
*1)(
*
1)
(
*1)
ACC
+B1
+B2
AMP+
OUT
OUT
GND
(
*1)
(
*2)GND
BR
STEREO POWER
AMPLIFIER
RADIO AND PLAYERB S8 ,S9A
A R4 ,R6B

214
RADIO AND PLAYER (w/ STEREO POWER AMPLIFIER)
9RB
7. 5A
RAD
NO. 220A
RAD
NO. 1
1H 32
IB1 8
IH2 2IH26IH21IH23 IE1 10 IE111 IF32IF33
I24
A 3A6A2D6D2D1 A 3A6A2C4C11 C3
A 4C2C1C8
A 4D3D9
IH1 2IH11IH15IH32IH31 C 9
D 4
IH1 6
I5 I5 I14 I14
IF3 11
ID1 2ID18IL15IL11IE19IE113
12 12 12
12 12
IF1122
LG±R LG±RLG±B LG±BL LG
L LGV PP
V
L LGV P
LG±R LG±BL LGV P
L V P
LG BR BR
WR Y BB
Y
R
WWRY B L±Y L±Y
L±Y L±YGR
GND FL+ FL± FR+ FR± WF+ WF±
C 14 D 5C 10(
*1)
(
*2)
(
*1)
(
*2)
D 8C 5 ACC +B1 +B2 RL+ RL± RR+ RR±
STEREO POWE AMPLIFIERREAR SPEAKER LH REAR SPEAKER RHR14 R13
F1 0
F1 1 F13 F12
W2
FRONT DOOR SPEAKER LH
FRONT TWEETER
(
SPEAKER)
LHFRONT DOOR SPEAKER RH
FRONT TWEETER
(
SPEAKER)
RHWOOFER(
SPEAKER) S8 ,S S10 ,AC FROM POWER SOURCE SYSTEM(
SEE PAGE 56)
D 21
,

215
*2 : W/O WOOFER(
SPEAKER) *
1 : W/ WOOFER(
SPEAKER)
IH1 8IH19 I16B 1 B 3 B 10 B9 B 14 B 13 B 6 B 5 B 4 B 12 B 11
B 1 B 3 B 9 B 10 B 14 B 13 B 6 B 5 B 4 B 12 B 11
AMP B ACC R. R R. L F. R F. L MUTE BEEP FADEAMP+ OUT OUT GND R. R R. L F. R F. L MUTE BEEP FADE
1 4 3 15 14 7 6 5 12 13 11
GND
ANT(
*
1)
(
*2)
ANT AMP
LGV BRWRL Y GB
P±L P±L B±R B± R
P± L P±L
A30 R6
AUTO ANTENNA
CONTROL RELAY RADIO AND PLAYERSTEREO POWER AMPLIFIERB S8 ,S9A
(
SHIELDED)
(
SHIELDED)
788 C ,S10 ,D