Toyota Supra 1990 Manual page 225

EFI SYSTEM - Troubleshooting with Volt/Ohmmeter (7M-GTE)
FI-51
Voltage at ECU Wiring Connectors
No.
Terminals
Condition STD Voltage
See Page
BATT - E1
-
10 - 14 FI-52
IGSW - E1
1
FI-53
M-REL - E1 Ignition SW ON
10 - 14
+B (+B1) -
E1
FI-54
IDL - E2
Throttle valve open 4-6
FI-55
VC - E2
-
4-6
2
Ignition SW ON
Throttle valve fully closed
0_1 - LO FI-56
VTA - E2
Throttle valve fully open 3_2 -4.2
Body
Ignition SW ON
4-6
KS
-
ground
FI-57
Cranking or running 2-4
3
VC -
Body
Ignition SW ON
4-6
FI-58
ground
No.10
E01
4
No. 20
-
Ignition SW ON 10 - 14
FI-59
No. 30
E02
5
THA - E2 Ignition SW ON
Intake air temperature 20°C (68°F) 1 - 3 FI-60
6
THW - E2 Ignition SW ON
Coolant temperature 80°C (176°F) 0.1 -1.0 F 1-61
7 STA -
E1 Cranking
6 - 14 FI-62
8
IGT - E1
Idling 0.7 -1.0
FI-63
9
IGDA
E1
Idling 1 - 3
FI-64
IGDB
-
ISC1
Ignition SW ON
10
I
- E1 9 -14 FI-65
ISC4
11
W- E1
No trouble ("CHECK ENGINE" warning light off) and
8 -14 FI-66
engine running
12
A/C -
E1 Air conditioning ON 10 - 14
FI-67
ECU Terminals
ruu
'U'
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'U'
U
ruu
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HT
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G21NE VF IOILI ox
fK~K\rH*HPl:
Kslvc
STAfA/Cfs~Fq
Fcl FPl
w
1A~'LI
-
1~~~An
E021~3'ISTJI
- I - 1 -
IIGTI'GD';IGD~
-
~Hq
G1 I El
~
elTE11 -
IK~KIIDL~m~
- I E2
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LP I EC
-r1
L1
I L2 I L31T1 LT - 1 - 1+811 +8
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