No.
Terminals
Trouble
Condition
STD Voltage
8
ISC1
ISC4 — El
No voltage
Ignition switch ON
10 — 14
V
ECU
Fuse
EFI 15A
Fusible
Link
MAIN 0.85R
Battery
F12437
EFI Main Relay
ISC1
o
ISC2
o
ISC3
o
ISC4
+B
o +
B1
o
M REL
El
O
n
Voltmeter
1=1
DEMOOD
200MODOC
+B
+
B1
0
EEO
000C
I
O00000
ODOODEO0D
F10312
////i/////
ECU
There is no voltage between ECU terminals ISC1
ISC4
•
and El.
(IG SW ON)
O
Check that there is voltage between ECU te B
( +
B1)
and body ground.
(IG SW ON)
OK
Check wiring between ECU terminal El and body
ground.
OK
BAD
•
Check ISC valve.
•
(See page FI-67)
BAD
OK
Replace ISC
valve.
Check wiring between ECU and EFI
main relay.
OK
BAD
Try another ECU.
Repair or replace.
Repair or replace.
FI-40
EFI SYSTEM -
Troubleshooting with Volt/Ohmmeter
Summary of Contents for 3F-E
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