TSRM/MK3 Supra/Wiring Diagrams
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S21/ECT System, page 1

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ECT System — MK3 Supra ECT System wiring diagram, page 1
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Page text (OCR transcript)
21 ECT ECT SYSTEM

15A ECU IG | 20A STOP | 15A RADIO NO.1 | 7.5A GAUGE

1 IG | 11 H | 5 2D

H- | -H | -Y | >- | >-

9 7 A STOP LIGHT S/W | 14 1B

3

-H | -B

TO STOP LIGHT I

G-W

24 | 22 | 23
IG | BK | +B

L | B | N

© ECT ECU

L1 L2 L3 O/D1 IDL S1 S2 SL SP2 GND
4 | 3 | 2 | 17 | 1 | 12 | 11 | 10 | 15 | 18

Y-L | G-B | G-Y | R-L | R-G

B | R | H-W | R-Y | R-Y | G-Y

4 B1 | 3 B1 | 2 B1 | 6 B2

B | R | H-W | R-Y

23 | 22 | 21 | 17
L1 | L2 | L3 | ECT

E TCCS ECU

THROTTLE POSITION SENSOR ©

TO CRUISE CONTROL COMPUTER

13 D2

Y-L

3
IDL

8 B2 | 5 B2 | 9 B2 | 2 B2 | 11 B2

G-B | G-Y | R-L | R-G | L-T

3 G | 2 G | 1 G | 8 G | 2 T

NO.1 NO.2 NO.3

ECT SOLENOID

T/M SPEED SENSOR (W/ A.B.S.) (W/O A.B.S.)

9 LW

2 LF

2 E3

>-

2 M | Y

B A/T INDICATOR S/M

L | 3 | 4 | 1

7 B2 | 1 B2 | 11 B1

T | G | N

20 | 21 | 7

14 3B

J/B NO.3

C PATTERN SELECT S/M

Y | 2

NORM 4 | A-G
PWR 5 | G-O

17 A.B.S. COMPUTER

15 | 1 | 2 | 10
ECT | BRAK | TSEN | BK

L-T | B | H-B | Y | BR

5 B2 | 3 T | 12 B2 | 4 B2 | 3 D1

B | H-B | Y | BR

3 T | 1 T | 4 T

A/B NO.4 SET BOLT