Toyota 4A-FE Repair Manual page 116

EFI SYSTEM - Troubleshooting with Volt/Ohmmeter Fl-47
No. Terminals Trouble Condition
STD voltage
9 STA - E1
No voltage
Cranking 6 - 14
v
FL
MAIN
2 .0L
FL
ALT
Battery
Ohmmeter
[JLJ
Voltmeter
cu
FL
AM1 . . S . h
40A (AE, AT1 80) Ignition w1tc
ECU
60A {AT1 71) Netural Start Switch
100A
(AE, AT180)
80A (AT171)
ECU
CD
Fl4051
F\4040
®
F14371
ST1
(A/T)
(MIT)
Starter
STA
{Terminal 50)
To Circuit Opening Relay
El
CD
There is no voltage between ECU terminals ST A and E 1 .
(IG SW START)
Check starter OK Check wiring between ECU terminal
F15170
operation. STA and ignition switch terminal ST1.
BAD OK
j
BAD
I
Replace replace.
®Check wiring between ECU terminal E1 and body
ground.
OK
i
BAD
Try another ECU. Repair or replace.
~
Check fusible link, battery, wiring BAD
Repair or replace.
and ignition switch.
OK
@Check that there is voltage at STA (50) terminal of starter.
3
(IG SW START) STD voltage: 6 - 14 V
OK
NO
Check wiring between ignition switch
Check starter.
terminal ST1 and starter terminal STA
I
(50)
I