Toyota Celica Supra 1982 Quick start guide

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TOYOTA
. ..... ELECTRICAL WIRING: .) ..•• (.:J: ~"G tIll'"
, .

FOREWORD
This wiring diagram has been prepared to provide information on the
electrical system
of the 1982 TOYOTA CeUCA SUPRA, MA61L
series.
All information in the manual is based on the latest product information
at the time of publication. However, specifications and procedures are
subject to change without notice.
@ 1981 TOYOTA MOTOR SALES CO., LTD.
All rights reserved. This book may not be r.·
produced or copied, in whol. or in part,. without
the written permission
of Toyota Motor Sales Co"
Ltd.
TOYOTA MOfOR SALES CO.LTD.

INDEX
A INTRODUCTION
B TROUBLESHOOTING
1
POWER SOURCE
2 CHARGING SYSTEM
3 STARTING AND IGNITION
SYSTEMS
4 STOP LIGHTS
5 BACK-UP LIGHTS
6 RADIO AND
STEREO PLAYER
7 CLOCK (Analog Meter)
8 HORNS
9 SEAT BELT WARNING
SYSTEM
10 REAR WINDOW DEFOGGER
11 REMOTE CONTROL MIRRORS
AND CIGARETTE LIGHTER
12 FRONT WIPERS AND WASHER
13
REAR WIPER AND WASHER
b
14 POWER WINDOWS AND SUN ROOF
15 OVERDRIVE
16
TRIP COMPUTER (Digital Meter)
17 DOOR LOCKS
18 FOG LIGHTS
19 RETRACTABLE HEAD LIGHTS
20 TAIL LIGHTS AND ILLUMINATION
21 TURN SIGNAL AND HAZARD WARNING LIGHTS
22 INTERIOR LIGHTS
,
',.'
23 COMBINATION METER (Analog)
.'. ",.-
24 COMBINATION METER (Digital)
ity
',*.
.. 1<'25
CRUISE CONTROL
26 EFI SYSTEM
·f
27 AUTOMATIC AIR CONDITIONER
,;GROUND POINTS
"'
G'F7'

A II\lTRODUCTION
As shown in the index, the entire electrical system is composed of 28 systems, including the power
source and ground points.
The power source illustrations show how battery power
is distributed to each fuse and what loads in
the system
the fuses protect.
Most systems are drawn from the fuses in junction blocks (JIB) No.2 and No.3.
Joining the power source with any system will ~esuit in the complete system.
Location of the ground points are shown as well
as how the cOmponent grounds'are related to each
other.
Each system
is displayed on two facing pages for easy reference.
On
the left is shown the system circuit and connectors as much as possible as they are actually posi-
tioned in the vehicle.
The system wiring routing and connector location
is displayed on the right.
System Title
'System Circuit
Connector
----,l!Oj
Illustration
o
IQI !£}! II II
_Wiring Routing
and Connector
Location

INTRODUCTION
Troubleshooting Hints and Component Operation
For assistance in understanding the system and help in repair, voltage, resistance or operation of each
component can be found boxed within the system circuit.
Connector Illustrations
The connectors marked alphabetically ( ® ' ® ' © ,etc.) are identical to those marked similarly
in the wiring routing. To assist in location, connector colors are written in the connector illustrations.
The connectors are
illJ,Jstrated in relation to the wiring side and not the component side, and these are
seen from the open end.
Connectors which join wiring within
the system circuit are drawn as a pair. Left connectors in the
system circuit are drawn on the left, and right connectors are drawn on the right. Upper connectors
in
the system circuit are drawn on the right, and the lower connectorscan be found on the left.
Connector pins are numbered
in each connector. Female connectors are numbered from left to right
and from top
to bottom. Male connectors are numbered from right to left and from top to bottom
(i.e., a male connector
is numbered in relation to its female connector).
® Green ® Blue
.11..
.# 1 2
:;,...
31
4 6 6
I 7 I 8 9 10
1
11 12
-
~
2 1
~
6 5 4 3
10 9 8 7
I 12
11
r
8 9
Wfu1ili
9 8 7 6 5
Female .
Male
Female
Male
Wire Color
Wire colors are indicated by an alphabetical code. The first letter indicates the basic wire color and the
second letter indicates
the color of the stripe. ,
B ; Black V = Violet P = Pink
Lg;
Light Green
Gr = Grey
Br
= Brown W = White R =
Red
0 = Orange L = Light Blue G = Green Y = Yellow
Example:
RG indicates a Red wire with a Green stripe.

B TROUBLESHOOTING
Troubleshooting Procedure
1. Determine what is wrong with the system.
2. First read the diagram
so you understand the system. Refer to the component operation boxed
within
the system circuit.
3. Locate
the cause of the problem.
a. Determine whether
the problem is with the common circuit (power source or ground) or
individual circuit.
Check
other loads or switches which are in parallel with the problem component.
If they are normal,
the problem lies within the particular system itself.
Refer
to the POWER SOURCE or GROUND POINTS and check the related systems.
(NOTE: Each component
is grounded at 2 or 3 points.)
If the related systems are normal, the common circuit (power source or ground points)
is okay.
The problem lies within
the indiVjdual system.
b. Locate
the exact point of the problem by narrowing down the flrea with a voltmeter or test
lamp.
->,.,:,'/'"
4. Repair and re-check the circuit.
If any wiring was disconnected for troubleshooting, re-connect it and check
the related circuits.
Voltage Check
1. Establish conditions in which voltage is present
at the check point.
IRefer
to component operations.)
Example:
® - Ignition SIW on
® - Ignition SIW and SIW 1 on
© - IgnitionSIW, SIW 1 and Relay on
(SIW 2 off)
2. Using a voltmeter, ·connect the negative lead to
a good ground point or negative battery ter-
minal and
the positive lead to the connector or
component terminal. This check can be done
with a test lamp instead
of a voltmeter.
To Ignitio;o 8/W
IG Terminal
!
fuse
®
81W 1
®
Relay
©
~'[11 '--+- ..... Solenoid
Voltmeter
0"

TROUBLESHOOTING
Continuity and Resistance Check
1. Disconnect the battery terminal or wire so
there is no voltage between the check points.
2. Contact
the two leads{)f an ohmmeter to each of
the check points;
If the circuit has diodes, reverse the two leads
and check again.
When contacting the negative lead to the diode
positive side and the positive
lead to the
negative side, there should be continuity.
When contacting the two leads in reverse, there
should be no continuity.
Finding a Short Circuit
1. Remove the blown fuse and disconnect all
loads of the fuse.
2. Connect a test lamp in place of the fuse.
3. Establish conditions in which the test lamp
comes on.
(Refer
to component operations.)
. Example:
® - Ignition S/Won
@ - Ignition S/W and S/W 1 on
© - Ignition S/W, s/W 1 and Relay on
(Connect
the Relay) and S/W 2 off
(or Disconnect
S/W 2)
4. DiSC{)nnect and reconnect the connectors while
watching
the test lamp.
The short
lies between the connectorwhere the
test lamp stays lit and
the connectorwhere the
lamp goes out.
.5. Find
the exact location of the short by lightly
shaking the problem wire along the body.
Ohmmeter
Ohmmeter
Disconnect
SIW2
4To 19oition SIW
: fG Terminal
Fuse Case
Short ®
S/W 1
Short ®
--- Disconnect
Relay
Short@)
-
_-- Disconnect
Solenoid

1 POWER SOLIRCE (Power-Load Reference) [
JIB No.3
I Power J Load System
No.
15A HEAD
(LH-LWRj Head Lamp (Left Low Beam) 19
I Head Lamp (Right Low Beam) 19
16A HEAD
(RH-LWR)
i Fog Light Relay 18
,
16A HEAD
lLH-UPR)
I Head Lamp (Left
High Beam)
19
16A
HEAD (RH-UPR)
Head Lamp (Right High Beam) 19
High Beam .Indicator Lamp
Charge Light Relay 2 i
,
16A EFI Trip,Computer . 16 !
EFI Computer, Air Valve, Circuit Opening RelaY,Fuel Pump
26
,
,
i Radio and Stereo Player 6
1M
HAZ-HORN ! Horn < J 8
, ! Turn Signal Flasher,
Front Turn Signal Lamp, Rear Turn Signal i
i . Lamp, Turn Signal Indicator Lamp I
21
I I
16A STOP i Stop Lamp i 4 i
Clock 7 !
" Trip Computer 16
16A TAIL Clearance Lamp,
Front Side Marker Lamp, Tail Lamp, Rear Side
Marker Lamp, License Lamp, Handy
Map Lamp, Glove Box
Lamp, Inspection Lamp, Vanity Lamp, Radio Lamp, Trip 20
i Computer Lamp,
AfT Indicator Lamp, Meter Lamp, AIC Control
, Lamp, Cruise Control
S/W Lamp, Overdrive S/W Lamp, Defogger
I
i
S/W Lamp, Cigarette Lighter Lamp, Ash Tray Lamp, Rheostat
. i
Front Wiper Relay, FrontWiper Motor. Front Washer Motor 12 !
20A WIPER ! Rear Wiper Relay, Rear Wiper Motor, Rear Washer Motor ! 13
_.
. i
..
1M
ENGINE Alternator 2 )
Igniter and Coil 3
FLO.3P
EFllnjector
26
Starter Magnet S/W, Start Injector, Start Injector Time S/W, I 3
FL 1.0Y Tail Light Relay
20
AIC Cut Relay 27

JIB No.2
Power Load
System
NQ.
7.5A HEAD (RTR) Retract Control Relay 19
Clock 7
7.5A
DOME
Seat Belt Warning Relay 9 -
I DoorWarning Lamp, Door Courtesy Lamp, Interior Lamp,
Map Lamp, Back Door Lamp, Step Lamp, Ignition Key Lamp, 22
Ignition Key Light Relay
, 1
CU-B Trip ~omputer
16
........................
OG Fog Lamp 18
RADIO Radio and Stereo Player 6
Clock 7
~ ...•.....
15A CIG Cigarette Lighter, Remote Control Mirror Motor
11
. Trip Computer 16
7.5A TURN Turn Signal Flasher, Front Turn Signal Lamp,
21
Rear Turn Signal Lamp, Turn Signal Indicator Lamp,
15A
ECU-IG
Cruise Control Computer, Cruise Control Indicator Lamp 25
Back-up Lamp, 5
Seat Belt Warning Relay, Seat Belt Warning Lamp 9
Defogger Relay, Defogger Indicator Lamp 10
Power Window Relay
14
7.5A GAUGE
OlD Relay, OlD Solenoid 15
Combination Meter
.23,24
Heater Relay, Water Valve VSV, Sub Damper VSV.Sub Damper
Relay
No.1, Sub Damper Relay No. 2.High Speed Relay, Double
Vacuum Valve, Warm-up Relay (30GC), Warm-up Relay (50"Cl. 27
A/C Amplifier
7.5A
IGN
IG Main Relay, Charge Warning Lamp 2
El'l
Main Relay No.1, EF I Main Relay No.2
DEFOG CB Rear Window Defogger
t=1t=}
Fusible Links (Near the Battery)
FL O.3P (Looped at connector) A/C Condenser Fan Motor , 27
FLO.3P ,
(Between battery and connector) Retract Relay, Retract Motor
19
FL 2.0L . Head Light Relay, Dimmer Relay
19
Ale Relay Block
A/C Amplifier, Sub Damper VSV, Compressor, Idle up VSV,
lOA
A/C
Condenser Fan Relay, A/C Indicator Lamp, In-Car Sensor Fan 27
Motor
A/C CB Blower Motor I 27
PowerWindow Relay Block
Power Window Motor, Sun Roof Motor 14
PWR CB
I Door Lock Relay, Door Lock Solenoid 17

,
r
~
: i
; I
~!
',1
'I
·1,
d
'Ii
. \:
,
, POWER SOURCE
N
0
z
;:-
..
'"
0
~
;;:
'"
{2
®
FL03? w ToNCRelay ...
Battery rw w
© JIB No.3
wira
FL O.3f'
HEAD !LH-lWR. 15A
HEAD (RH.LWRr1$Al
HEAD (LH·UPRi 15A
3 I ~ ~ RW To Retract Relay
Head Ught Relay
c-:i-o~1
I"
'I
DImmer Relay
:vI
Head Light Relay
Closed with light contrOl 8/W at I
HEAD position or dimmer srw I
<It .FLASH pos.ition :
~i?"~. ___ .. , ___ ;
Dimmer Relay
:changed from HEAD (LWRI to '
i HEAD {UPR) with dimmer S{W
~
at FLASH position or with head
light r-elay on and dimmer S/W
it HIGH positiQr;
~1!2~_ .. _____ --'
,if HEAD {RH-UPR) 15A1
Tail Light Relay
EFI
ISA
HAZ·HORN 15A
fL LOY
I
STOI'
'SA
TAIL
1SA
WIPER
20A
ENGINE
,s):""'" l
,
Tru! Ught Relay
1-o~1
, I
10 Main Relay
1-
.1
rr I
~ .
CIOSl)d with Ught control SIW"I
at TAl L or HEAD position
Coil65H
IG Main Relay
Closed with Ignition S/Wat'
IG orST~ltion :
COU 50 -BOil
Heater Relay
~-~c=--~
j5 - 4: Closed with ignition S/W at,lG '
I position and heater blower
, S/W
on {at L, M or H positionl
I
i5 4: Closed with iglJition sIW at lG
po~ition and' he.ater blower $/'oV
at Auto ~sition and warm-up
relay (30"CJ cI¢~d
JIB No.2
@ ,.::.:.::...:.==-----------. ® Ignition
SIW
!
l
[
~GIf~H~E~A~D=(RT==R):7~.5~As:~~r=~~======r~fERlw~ (D ~----,
~
::ii 2 ~I ~~~~~'~'E=il ~JLJMI~-§. '~'; ~' 3, CI""d with 'gnition "Y'::I'
> • ~00M~""E_-o;.1,,5A_'>_-.... 5 I.R Ll'I 1 IACr::~ ACGcr IG position
® I.,
.5A ..... ~ I; r SY ~ I-. AM 1 - 6: Closoo with ignition key at
N~I ~E""CU'!c-6~_<:i_:;:.:..o_--l r-;:::::I-'!-~ ..... ~ ,IG.rST"",'6oo
'
l9 DEFOG CB-t _11>----'
FOG lSA "'--'iV
RADIO
1.SA
PWfl CB
elG
,SA
TURN
7.5A
ECU-lG
15A
GAUGE
1.SA
taN
7.SA
"'""'-'"
,
I I
@Black ©Yellow
®Gr •• n ®Slack
@Green
®
'(DSlack
Ale Relay Block
Q)
AleCB
LA
wa
Ln
y
LW
L
NC10A
,
..
_______________ -----1 --------0
-----
F,L
DEFOG ----+4-:=.~~t~~J;;;;J
CB
GAUGE 7.~r' __ '
RADIO 7.5A -Ftf~~ff:nITn~:~::~
ECU-B 7.5A
DOME 7.5A--;'~:-7"1t
CIG 15A
ECU-IG
15A
__ ' '~r'~ IRTR)
FOG 15A
TURN 7.5A
ENGINE
15A
-
HAZ-HORN
15A
\ F
G
®
\ ©
HEAD
@
HEAD
(LH·UPR)