Toyota 4-Runner 1985 Repair Manual page 199

FI-30
No.
EFI SYSTEM - Troubleshooting for EFI Electronic Circuit with Volt/Ohmmeter
Terminals Trouble
+B - E,
No voltage
Fuse EFI (15A)
~
I
Fusible link
AM IG
Ignition Switch
Condition
IG S/W ON
EFI Main Relay No.1
Fuse IGN
(7.5A)
__
-o-~E:"":C:,,,,:U:""'-
_ _ _ _
-<:l
+8
STD Voltage
10 - 14 V
ECU
: Battery
...L..
Ignition Switch EFI Main Relay No.1
-=
1
CD
FI0124
ECU
FI0552
~
E~
No voltage between ECU terminals +B and E
1 •
(lG S/W ON)
Check that there is voltage between ECU terminal
+B
and
body ground. (lG S/W ON)
NO OK
OK
Try another ECU.
FI0605
Check fuse, fusible link and ignition
1---_1004
Repair or replace
OK
Check EFI main relay.
OK
Check wiring between EFI main relay
and battery.
I------t-l
Rep lace
~---.I Repair or replace