Toyota 3F-E - Page 101

O
Check wiring between ECU terminal El and body
ground.
OK
Try another ECU.
BAD
Repair or replace.
NO
OK
Repair or replace.
Fuse blows again
OK
BAD
BAD
Check wiring between ECU
terminal W and fuse.
Repair or replace.
O
There is no voltage between ECU terminals W and El .
(Idling)
Check that there is voltage between ECU terminal W and
body ground.
Check GAUGE fuse (7.5A) and "CHECK"
engine warning light.
FI-42
EFI SYSTEM —
Troubleshooting with Volt/Ohmmeter
No.
Terminals
Trouble
Condition
STD Voltage
10
W — El
No voltage
No trouble ("CHECK" engine warning
light off) and engine running
10 — 14 V
ECU
F10728
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