Toyota 4A-FE Repair Manual page 109

Fl-40 EFI SYSTEM - Troubleshooting with Volt/Ohmmeter
No. Terminals Trouble
2 BATT - E1 No voltage
Fuse
.------------0
STOP~ 1 5A (AE)
t
ALT
1 OOA
(AE)
FL
I~
MAIN 2.0 L (AT)
--
_I_
Battery
--
--
--
ECU
Voltmeter
cu
Ohmmeter
LK:J
L
EFI 15A (AT)
Fl4041
Fl4042
®
Fl4040
Condition STD voltage
10 - 14
v
ECU
BATT
~--.( 1 E1
--
Fl1B43
CD
There is no voltage between ECU terminals BATT and E 1.
@
Check that there is voltage between ECU terminal BATT and
body ground.
NO
I
OK
@Check wiring between ECU terminal E1
3
ground.
and body
!
OK
!
BAD
Try another ECU .
Repair or replace.
,
Check fuse and fusible link.
BAD
Replace.
OK
Check wiring between ECU terminal BAD
Repair or replace.
and battery.