Voltage At Ecu Wiring Connectors - Toyota MR2 1988 Repair Manual

Fl-30
EFI SYSTEM - Troubleshooting with Volt/Ohmmeter
Voltage at ECU wiring connectors
No. Terminals
STD voltage Condition See page
1
+ 81
- E1 10- 14
Ignition S/W ON Fl-34
+B
2 BATT - E1 10- 14
-
Fl-35
IDL- E2 10- 14 Throttle valve open
0.1 - 1.0 Throttle valve fully closed
Fl-36
3 VTA- E2
Ignition S/W ON
4- 5
Throttle valve fully open
vee-
E2 4-6
-
+81 - E2
10- 14
-
VC- E2 6- 10
Ignition
-
S/WON
4 2- 5.5 Measuring plate fully closed
Fl-38
VS- E2 6-9 Measuring plate fully open
2-8 Idling
-
5
No. 10
EOt
9- 14 Ignition S/W ON Fl-39
-
No.20 E02
(
6 W- E1 9- 14
No trouble (Check engine warning light off) and
Fl-40
engine running
7
THA- E2 1 -3 Ignition S/W ON Intake air temperature 20°C (68°F) Fl-41
8
THW- E2 0.1 - 1.0 Ignition S/W ON Coolant temperature 80°C (1 76°F)
Fl-42
9.
STA - E1 6- 14 Ignition S/W ST position and press on the clutch pedal (M/Tl Fl-43
i
i
to'
IGT- Et 0.7- 1.0 Idling Fl-44
11 A/C - E1 5- 14 Air conditioning ON Fl-45
*,:For A/T
*• :For Calif.
ECU Connectors
I I I
I
I I
E01 No.
*,
G8 GEB
*•
*, L3 *,
L1
vs THA
BATT
+81
10 STA VF NSW FPU
w
T IDL IGF THG NE
ve
E02
No.
IGT
E1 S/TH
V-
Ale
E2 ox
vee
VTA THW *,
*:
L2 E21 STP SPD
-
+B
20
ISC HT
-
ECT
r- ~
F10234