ESA - Functions
of Engine EC
U
The relationship between the major controls the REFERENC
E
make up ignition timing control and the major The signals used for certain controls may
signals from each sensor is shown in the differ depending on the engine
.
following table
.
L
L
W
W
0
J
x
U
SIGNALS
o d
J
P
:
(D
0
~
U)
LU
~
S
e
O
O
~
>
ZD
(L
LL
Cn
¢
(n
U)
_j
O
~V
0
Z
~
L
L
Q"'
Z
ga
z
_J
z
~
z
~
a
OW
(D
H!
~
O
Q
~
~
Za
Z
0
j
~
u
.
O
IGNITION TIMING CONTROL
Y O
Q
F
~
m
a
~>
_J
>
C7
Z
=
CL
a
Z
> O
V)
O
~
0
Sta
rt
ing ignition
control
0
0
Basic ignition
advance angle
0 0
0
0
0
~
C
Warm-up correction
0
0
0
~
Over-temperature
correction
0
M
C
Stable
idling correction
0
0 0
0
Y
E
EGR
correction
0 0
0
0
0
t
m
_
~
>
Air-fuel ratio feedback
correction
0
0
0
m °
Knocking
correction
0
r
o
o
U
c
~
Torque control correction*
0
0
0
0
Torque control correction
also uses
the vehicle speed (SP2) signal
. This
signal is
used to control the ECT
. For further
details, see
Step 3, vol
. 4 (ECT)
.
90
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