Toyota 4-Runner 1985 Repair Manual page 206

No.
EFI SYSTEM - Troubleshooting for EFI Electronic Circuit with Volt/Ohmmeter
FI-37
Terminals
Fuse
ENGINE
(15A)
ECU
ECU
Trouble
No voltage
Condition
No trouble (CHECK ENGINE
light off) and engine running
STD Voltage
8 - 14 V
~------<~--------------------------------QW
"CHECK ENGINE"
Light
Combination Meter
CD
FI0610
CD
CZ)
ECU
No voltage between ECU terminal Wand
E
1 •
(Idling)
Check that there is voltage between ECU terminal W
and body ground.
NO
OK
I
Check wiring between ECU terminal EI and body
@
ground.
OK
!
BAD
I Try another ECU.
I
l
Repair or replace
~
Check ENGINE fuse (15A) and BAD
Repair or replace
Check Engine light.
OK
Check wiring between ECU
BAD
terminal Wand fuse.
Repair or replace