Toyota MR2 1988 Repair Manual page 230

Fl-34
No.
1
EFI SYSTEM - Troubleshooting EFI Electronic Circuit with Volt/Ohmmeter
Terminals
Trouble
Condition
STO Voltage
+81
+B
- E1
No voltage
Ignition switch ON
10- 14
v
ECU
Fuse
EFI Main Relay
EFI 15A
+B1
AM
2
IG
2
L
+B
!'-=-J
Fuse
Ignition Switch
AM
2
7.5A
Fusible Link
1.25B
-T
Battery ,
..L
J.
CD
FI0124
Fl2034
~
, - -
E1
*
Fl2852
CD
There is no voltage between ECU terminals +B1 or +Band E1.
(IG S/W ON)
(2)
Check that there is voltage between ECU terminals +B1 or +B
and body ground. (IG S/W ON)
NO
lOK
I
I
Check wiring between EClJ.Iterminal E 1 and body
®ground.
t
Check fuse. fusible link and
wiring harness.
iBAD
I
Repair or replace
BAD
t-----1
Repair or replace