Toyota MR2 1988 Repair Manual page 228

Fl-32
EFI SYSTEM - Troubleshooting with Volt/Ohmmeter
Voltage at ECU wiring connectors
No. Terminals STD voltage Condition See page
!
+ 81
1
- E1
+8
10- 14 Ignition S/W ON Fl-49
2 BATT- E1 10- 14 -
Fl-50
IDL- E2
M/T 4-5
Throttle valve open
A/T 10- 14
0.1 - 1.0 Throttle valve fully closed
Fl-51
3
VTA- E2
IgnitionS/WON
4-5 Throttle valve fully open
VC- E2
4-6
-
VC- E2
4-6
-
4-5
Ignition
Measuring plate fully closed
S/W ON
4 Fl-53
VS- E2 0.02- 0.5 Measuring plate fully open
2-4
Idling
-
5
No. 10 E01
9 - 14
Ignition S/W ON Fl-54
-
No.20 E02
6
W- E1 9- 14
No trouble (Check engine warning light off) and
Fl-55
engine running
7 THA- E2 1 -3 Ignition S/W ON Intake air temperature 20°C (68°F) Fl-56
8
THW- E2 0.1 - 1.v Ignition S/W ON Coolant temperature 80°C (176°F)
I
Fl-57
i
9
STA- E1 6- 14 Ignition S/W ST position and press on the clutch pedal (M/T) Fl-58
10 IGT- El 0.7- 1.0 Idling Fl-59
RSC
11
- E1
9- 14 Ignition S/W ON Fl-60
RSO
12 A/C- E1
5- 14
Air conditioning ON Fl-61
*':For A/T
*' : For Calif .
.__.
'---'
.____.
E01 RSC STA EGR
NSW
No.
No.~
G2 NE VSV IGF
"w
R/P
vsv *'
*'
TIL SPD ELS THA
vs
BATT
ELS
10 20
3 2
L1
L2
1
vc
2
ISMC
*'
*
IKNK
E02
RSO
IGT E1
-
- VF T
VT
A IDL HT OX E2 E22
-
L3
ECT
A/C
w
FPU
- THG +B +81
1
F10574