FI·104
EFI SYSTEM
EIeeU'Onl c Control System
.
,.
Electronic Controlled
Unit (ECU)
INSPECTION OF ECU
N
O
TE
:
The EFI
circuit
cen
be
checked by measuring
11M!
,niltlnee
lind
voll9g e 91 Ihe
wiring
connectors of tilt
ECU.
,
.
INSPECT VOLTAGE OF ECU
Check the voltag e betwe8f"! e9ch terminal of the wiring
Terminal.
+8
_
£1
VTA
- [2
_
EOI
�02
W
-
E l
:.. £2
T
-
£1
STH
-
El
ECU Termin,I.
•
T
u
r
n the ignition switch ON
.
•
Meesu.e the voltlge
at
IIsch term;i\31
NOTE:
•
Perform
III
...
oItag e measurements .... ith the connectors
connected
.
•
Verity the'
the
battery
voltage is
11
V
o
r
more when
Ihi
Ignition ,witch is ON
.
Voltage at ECU Wiring Connectors
(TCeS ECU w/o Air Flow Meter)
ST,) vol\aill !VI
Ignitioo SfW
ON
1 0
_
1 4
10 - 14
Ignitioo S/W
ON
C
.a
n
k
i
n
g
o.
idling
0.1
- 1.0
CllIJlkinll
Ignition
SfW
ON
.
9
-
1 4
No t.ouble
(Cheek eng ..... warning
(
i
g
h
t
0111
and eng;n.e
.unolnll
.�-
-
--... -
fgn,tioo SIW
ON
.
--
Ignition S/W
ON
,"
t
8�
.
e air temp.
20·C
(6S"F)
Coolant tllmp. 80·C
11 76°F)
Au coodillORlng ON
Idling
5 -
1 4
0
-
3
r:g
,-
u
Vf
(2' Nt"
Ilt.
...
....
n
