Toyota COMPUTER-CONTROLLED SYSTEM Training Manual page 79

EFI - Functions of Engine EC U
The relationship between fuel injection duration
control and the major signals from each sensor is
shown in the following table :
®
REFERENCE
The signals used for each type of control may
differ depending on the engine model .
N
SIGNALS
w w
0 _J a.
P:
z
W a- CC U) 7 h
H L
LU _J
(L M
V)
x v) cc
~
w
D
xN
w w
xa d =
¢~ H C7 p
za ?d
x u
FUEL INJECTION DURATION CONTROL
m
Neu
0
0
U_ (L
; o
Z
0
w
M
N
j
= N
a s
Starting injection control
0
0 0 0 0
Basic injection
For D-type EFI
0 0
duration control
For L-type EFI
0
1 1
0
Intake air temp . correction
0
After-sta
rt
enrichment
0 0
Warm-up enrichment
0
Power enrichment
0 0 0
0
Acceleratio n
Air-fuel ratio enrichment
0 0 0
0 0 0
correction
correctio n
during
Deceleratio n
transition
lean
0 0 0 0 0 0
After-sta rt
correctio n
injection control
Air-fuel Oxygen
0
42
ratio senso r
feedback
Lean mixture
0
correction
senso r
CO emission contro l
correction *
O
O
Idling stability correction
0 0
High-altitude compensation
0
correction
Durin g
deceleration O
0
O
0
Fuel cut-off At hig h
engine
0
speed s
At hig h
vehicle
0
speed s
Voltage correction
- To-
* Only engines without oxygen sensor or lean mixture sensor .
69