EFI SYSTEM — Troubleshooting with Volt/Ohmmeter
FI-39
No.
Terminals
Trouble
Condition
STD Voltage
7
STA — El
No voltage
Cranking
6 — 14 V
ECU
Ignition Switch
Neutral Start Switch
AM1
ST1
STA
Fusible
0.5G
Link
STA (Terminal 50)
To Circuit Opening Relay
Battery
E1
F12436
Voltmeter
STA
Starter
(Terminal 50)
V
F10336
There is no voltage between ECU terminals STA and El.
(IG SW START)
OK
Check starter
Check wiring between ECU terminal
operation.
STA and ignition switch terminal ST1.
BAD
OK
BAD
Repair or replace.
O
Check wiring between ECU terminal E1 and body
ground.
OK
BAD
Try another ECU. I
Repair or replace.
Check fusible link, battery, wiring, BAD
ignition switch and neutral start
Repair or replace.
switch.
OK
Check that there is voltage at STA (50) terminal of starter.
(IG SW START)
STD voltage: 6 — 14 V
OK
NO
Check wiring between ignition switch
Check starter.
terminal ST1 and starter terminal STA
(50).