Toyota COMPUTER-CONTROLLED SYSTEM Training Manual page 77

EFI - Functions of Engine ECU
13
INJECTION METHODS INJECTION TIMING ENGINES* '
Intake stroke Ignition Fuel injectio n
1
5
3 7M-G E
3 GROUPS
6
7M-GTE
4 i
s
2VZ-FE
0°
3600 720 0
Crankshaft angle OHP 5 4
Note : This graph shows the injection timing for th e
7M-GE engine.
Intake stroke Ignition Fuel injectio n
1 f
8
i
i
1_ 01
1
4
i i
4 GROUPS
3
j
1UZ-F E
6
i f
5 S f
7
2 i
0 ° 360° 720° 1080 °
Crankshaft angle OHP
5 4
Intake stroke Ignition Fuel injectio n
INDEPENDENT
3S-G E
SEQUENTIAL)
3S-GT E
(
2 4A-FE ( engines w/lea n
0° 360° 720° 1080 °
Crankshaft angle
OHP 54
mixture sensor )
FOR 1S-i
Intake stroke i Ignition Fuel injectio n
1 t
3
4
2 t
S- i
0` 360° 720° 1080 °
Crankshaft angle OHP 5 4
1 Applicable engines were manufactured in September 1991 .
Refer to the respective engine Repair Manuals or Electrical Wiring Diagrams for later changes and addi-
tions .
2 The fuel injection volume in the 3F-E engine is controlled separately for the front three cylinders and the
rear three cylinders . However, since fuel is injected into the front and rear cylinders once each time the
crankshaft turns, injection is simultaneous .
,--
NOTE
There are some engines in which basic fuel injection methods and the injection method employed during
starting are different .
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