Toyota Supra 1990 Manual page 208

FI-34 EFI SYSTEM - Troubleshooting with Volt/Ohmmeter (7M-GE)
CD
• IG SW - E1
CD
There is no voltage between ECU terminals
IG SW
and E1.
(lG SW ON)
®
Check that there is voltage between ECU terminal
IG SW
and
body ground.
(lG SW ON)
NO
~
OK
FI0313
Check wiring between ECU terminal E1 and body
ground.
1
0K
~
BAD
Try another ECU.
Repair or replace.
Check fuse, fusible links and
BAD
ignition switch .
Repair or replace.
CD
• M-REl- E1
CD
There is no voltage between ECU terminals M-REL and E1.
1
(lG SW ON)
®
Check that there is voltage between ECU terminal M-REL and
body ground.
(lG SW ON)
NO
1
0K
FI0315
Check wiring between ECU terminal E1 and body
ground.
Voltmeter
t
OK
tBAD
Try another ECU.
l
Repair or replace.
Check EFI main relay and wiring
BAD
I
I
harness.
Replace.
FI0316
OK
Try another ECU.
I