TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
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FI/EFI System, page 76

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EFI System — MK2 Supra EFI System, page 76
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Page text (OCR transcript)
FI-76

EFI SYSTEM — Electronic Control System

Terminals	STD Voltage		Condition

BAT — E1				—

+B — E1	10 — 14		

IG S/W — E1		IG S/W ON	—

M.REL — E1				—

IDL — E2	4 — 6		Throttle valve open

VTA — E2	0.1 — 1.0		Throttle valve fully closed

	4 — 5	IG S/W ON	Throttle valve fully opened

Vc — E2	4 — 6		—

	4 — 5		Measuring plate fully closed

Vs — E2	0.02 — 0.08		Measuring plate fully open

	2 — 4		Idling

	0.3 — 1.0		3,000 rpm

THA — E2	1 — 2	IG S/W ON	Intake air temperature 20°C (68°F)

THW — E1	0.1 — 0.5		Coolant temperature 80°C (176°F)

STA — E1	6 — 12		IG S/W ST position

No. 10
No. 20 — E1	9 — 14	IG S/W ON	—

IGt — E1	0.7 — 1.0		Cranking or idling

ISC1
|
ISC2 — E1	9 — 14	IG S/W ON	—

ISC4	9 — 14		2 — 3 secs. after engine off

+B — EGR	10 — 13	IG S/W ON	—

	0		Start engine and warm up oxygen sensor

	0		Shift position P or N range (for A/T)

	10 — 14	IG S/W ON	Ex. P or N range (for A/T)

N/C — E1	0		Clutch pedal not depressed (for M/T)

	10 — 14		Clutch pedal depressed (for M/T)

	9 — 11		Cranking

T — E1	4 — 6	IG S/W ON	Check connector not short

	0		Check connector short