Toyota Supra 1990 Manual page 233

EFI SYSTEM - Troubleshooting with Volt/Ohmmeter (7M-GTE)
FI-59
No.
4
Terminals
No. 10
No. 20
No. 30
E01
E02
Fusible
Link
Fusible
Link
Battery
Trouble Condition
STD Voltage
No voltage Ignition switch ON
10 -14 V
Ignition Switch ECU
AM2 IG2
Fuse
r-----~~~O~------------~----------~,o--_oIGSW
+B
AM230A
MAIN 2.0L
Solenoid
Resistor
No. 30
No. 20
IGN 7.5A
No. 10
Injector
CD
CD
~~~---------oNo.l0
~---------------------{J
No. 20
~------------------------ONo.30
EOl
E02
FI3679
There is no voltage between ECU terminal No. 10, No. 20 and/or
No. 30 and EOl or E02. (IG SW ON)
cv
Check that there is specified voltage between resistor terminal +B
and body ground. STD voltage: 10 - 14 V
OK
~NO
Check fuse, fusible links BAD
J
Repair or replace.
and ignition switch.
I
~OK
/ \ \ \ CV
Check wiring between
BADJ . I
~
Solenoid Resistor
!J;:"
I
~ VOltl~'
. ""
+B~NO.~O:
1
resister and battery.
I
Repair or rep ace.
cv
Check that there is specified voltage between resistor terminal (No.
10, No. 20 or No. 30) and body ground . STD voltage: 10 - 14 V
OK
lBAD
No.
~
No.30 ,
FI3541
@
Check resistance of each injector.
II
Replace resistor.
STD resistance: 2.0 - 3.8
n
OK
1
BAD
Check wiring between ECU and
I
I
Replace injector.
injector.
@
OK
~BAD
Try another ECU.
j
l
Repair or replace.
J
FI1635
I