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GEN
INFO
FEATURES
Composition of final injection duration
1
Injection at start *1
2
After-start enrichment
*2
3
Warm-up enrichment
*3
4
Acceleration compen-
sation *5
5
Oxygen feedback *6
6
Fuel cut-off
Deceleration compen-
sation *5
7
Basic injection dura-
tion
8
Voltage compensation
duration
È
RPM
É
Injection duration
Ê
Cranking
Ë
Warm-up
Ì
Idle
Í
Acceleration
Î
Constant
Ï
Deceleration
Ð
Start
Ñ
After start
Reactive injection duration:
A lag is created between the time the ECU outputs a fuel injection signal to the injector and the time
the injector actually opens. Therefore, the ECU calculates this lag in advance before sending the
actuation signal to the injector. The battery voltage determines the reactive injection duration.
• High voltage → short reactive injection duration
• Low voltage → long reactive injection duration
LIST OF FUEL INJECTION COMPENSATIONS
Compensation item Check item Sensor used
Starting injection *1 Coolant temperature Coolant temperature sensor
After-start injection:
After-start enrichment *2 Coolant temperature Coolant temperature sensor
Warm-up enrichment *3 Coolant temperature Coolant temperature sensor
Intake temperature compensation *4 Intake temperature Intake temperature sensor
Acceleration compensation/decelera-
tion compensation *5
Intake air pressure Intake air pressure sensor
Throttle position Throttle position sensor
Coolant temperature Coolant temperature sensor
Air-fuel ratio feedback compensation
*6
Exhaust gas residual oxy-
gen concentration
O
2
sensor