TSRM/MK4 Supra/Wiring Diagrams
Repair ManualWiring Diagrams
p.037

OWD/Overall Electrical Wiring Diagram — 26 Supra (Cont. d) Radiator Fan, Automatic Air Conditioning, page 38

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26 Supra (Cont. d) Radiator Fan, Automatic Air Conditioning — MK4 Supra Overall Electrical Wiring Diagram wiring diagram, page 38
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Page text (OCR transcript)
26 SUPRA (Cont. d)

Radiator Fan, Automatic Air Conditioning

HOT AT ALL TIMES
FUSE 50A
BAT

HOT IN ON OR START
FUSE 7.5A
IG

W-B
BR-W
L-B
V-W
P-B
L-R
L-R
B-W
R-W
W-L
P-B
B-W
P
LG
B
GR
LG-B
R-B
B
BR-W
Y
BR
B-Y
Y

NO.1 HTR
HEATER CONTROL SW.

R-L

From Rear Window Defogger
Relay->0-1>

From Tailgate Light RH
<3E-1>

A/C

FUSE 50A/40A
FAN

FUSE 10A/10A

OFF

GY

FUSE 10A/10A

FUSE 10A/10A

FUSE 10A/10A

FUSE 10A/10A

A/C
FUSE 10A/10A
PRES
MUTE

BL

ECON GAS

AUTO

FACE AUX

DEF

FACE DEF

COOL GF

MAX A/C SW.

W-B

P-L

L-R
BR
L-W
L

BR

CLGLGH

G

BR

AIR MIX CONT. 
SOLENOID

WARM

W-B

BR-W
L-B
V-W
P-B

L-R
L-R

B-W
R-W
W-L

P-B

B-W
P
LG
B
GR
LG-B
R-B
B
BR-W
Y

BR
B-Y
Y

MAX A/C

R-L

R-L

DEF
W-L

L-R

BR

IF

AC AMP.

L-W

L

HOT IN ON OR START

W-B

W-B

BR-W
BR-W
V-W

Y-G
BR-W

Y-L

P-B

G-Y

G-Y

V-W

V-W

Y

R-Y

G-W

L-W

LG-R

Y-L

W

LG

L-R

B-W

L-Y

L-W

L

BR-W

V-W

A17
DUAL SOLAR SENSOR

A1
ROOM
AMBIENT TEMP. SENSOR

A4
A/C LOCK SENSOR
(A/C MAGNETIC CLUTCH)

COOL

WARM

AIR MIX CONT.
SERVO MOTOR

A15
EVAPORATOR
TEMP. SENSOR

E11
ECON GAS TEMP. SENSOR
(WATER TEMP. SENSOR)
by A/C System.

FACE

DEF

AIR OUTLET
MODE CONT.
SERVO MOTOR

To Engine Control Module
(Engine and Electronically
Controlled Transmission ECU)
<3-B; 4-B>

From Engine Control Module
(Engine and Electronically Controlled
Transmission ECU)<3/22-C; 3/23-C>
From Ignition<2/2-C;E>-3>

A3

A/C POS.F
C-CONTROL SW.

L-Y

B-W

Fan relay and sensor
right mirror

RELAY CONTROL
BOX
(A/C CONDENSOR
FAN ECU)

W-B