Toyota Supra 1990 Manual page 297

Terminals
THA
-
E2
THW
-
E2
No. 10 EOl
No. 20
-
No. 30 EOl
STA
-
El
ISCl
I
- El
ISC4
IGT
-
El
*2
IGDA
IGDB
-
El
W
-
El
AIC -
El
TEl - El
NSW (AfT) - E 1
NIC (MIT) -
El
*3
DFG - El
*3
LP - El
*
1 7M-GE only
*
27M-GTE only
*
37M-GTE (MIT) only
EFI SYSTEM - Electronic Control System
FI-123
Voltage at ECU Wiring Connectors (Cont'd)
STD Voltage Condition
1-3
Ignition SW ON Intake air temperature 20°C (68°F)
0.1 - 1.0 Ignition SW ON
Coolant temperature 80°C (176°F)
10 - 14 Ignition SW ON
6 - 14
Cranking
9 -14
Ignition SW ON
0.7 - 1.0 Idling
1-3 Idling
8 - 14 No trouble ("CHECK ENGINE" warning light off) and engine running.
10 - 14 Air conditioning ON
4-6
Check connector terminals TEl - El not connect
Ignition SW ON
0 Check connector terminals TEl - El connect
0
Shift position P or N range
Ignition SW ON
10 - 14
Ex. P or N range
0 Clutch pedal not depressed
Ignition SW ON
10 - 14 Clutch pedal depressed
10 - 14 Defogger SW OFF
Ignition SW ON
0
Defogger SW ON
10 - 14
Headlight SW OFF
0
Headlight SW ON