Toyota Land Cruiser 1988 Repair Manual page 166

EFI SYSTEM -Troubleshooting with Volt/ Ohmmeter Fl-35
No.
Terminals Trouble Condition STD Voltage
VC- E22 Ignition
-
4-6V
vs-
E22 S/WON Measuring plate fully closed 4-SV
3
VS- E22 No voltage Measuring plate fully open 0.02-0.08
v
VS- E22 Idling
-
2-4V
vs-
E22
3,000 rpm
-
0.3-1.0
v
ECU
+B
(+81)
E2
E22
~
vs
vc
VS
vc
Air Flow Meter
1
E1
-
Fl1269
CD
There is no voltage between ECU terminals VC or VS and
E22. (IG S/W ON)
®
Check that there is voltage between ECU terminal
+
B
( +
B1) and body ground. (IG S/W ON)
OK
JNo
F12444
Refer to No. 1.
(See page Fl-30)
Check wiring between ECU terminal E1 and body
ground.
OK
!
BAD
@
Check air flow meter. Repair or replace.
(See page Fl-66)
FI0312
BAD
t
OK
Replace air flow Check wiring between ECU and air
Air Flow Meter
@
Ohmmeter
l
Cl r::::ll Cl
"iP
'T'
'T'
Cll
J
!J
~
\
I n.
I
i i
VC
~E2'<1
,vs
: 101
~
J __________
.,..l
'
(See page Fl-66)
Fl1283
meter. flow meter.
~OK ~BAD
Try another ECU.
I
Repair or replace.