Toyota Celica Supra 1986 Service And Repair Manual page 144

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Fl-42 EFI SYSTEM - Troubleshooting for EFI Electronic Circuit w ith Volt/Ohmmeter
No. Tttmlnolo
T~
Condmon STD Voltego
7
lOt - Eo No
•olblgo
Cranlclng . .
ldlng
0.7
l .OV
F~le
LiM<
ECU
l gnittr
w/
lgnitiol\
Coil
~lblelin k
.......,
Fu'!
Jm
IGJSN
~
Fusible Link
TKhometer
IGt
: 81t1er"y
IGI
...
!
.
IG
S/W
+
e,
·-
<D
(j)
There is no voltage between ECU terminal IGt and E1.
Voltmeter
lldfongl
I
I\.
~
Check that there is voltage betw&en ECU terminal
IG:
Stw and
·.-:.
body ground. fk11ingl
joK
I
v
~
,\
Check wiring b4nween ECU terminal E1 and
I
:1
body ground.
.107.1
I il
j eAD
Vohmettr
ECU
®
Refer to
No. 1.
BAD
Repeir or replace
I
I
"
..
'OK
.S/W
Check fuse and wiring hemeta.
BAD
1
Repair or repltce
v
-"' \ -......
~OK
,\
Check wiring between ECU
tnd BAD
Repair or 1tplace
distributor.
joK
flO) ..
Check distributor.
BAD
Repla,ce
jOK
Ctleck
wiring
between ECU end BAD
Repair or repltet
tgni1er.
jOK
Check igniter.
BAD
I Repair or replace
jOK·
Try another ECU.
I