Toyota 7M-GE Repair Manual page 162

MO.
'4 -
EFI SYSTEM
- Troubleshooting with Volt/Ohmmeter (MA)
FI-45
Terminals
Trouble
Condition
STD Voltage
KS - Body
ON
4-6V
ground
No voltage
Cranking or running
2-4V
I
vc -
Body
ground
Ignition S/W ON
'7M-GTE only
Air Flow Meter
_ Ivc
ECU,
z31,
VC
KS
r
El
FFA7m
F1257i
Oh
. KS - Body ground
I 0
There is no voltage between ECU terminals KS and body
ground. (IO S/W ON)
I 0
Check that there is voltage between
and body ground. (IG S/W ON)
OK
i
0
Check wiring between ECU terminal El and body
ground.
OK
BAD
L
I
Check air flow meter.
(See page FL981
I I
Repair or replace.
I
Check wiring between ECU and air
BAD
Try another ECU.
Repair or replace.