Denso CRS - Injector Actuation Circuit

Operation Section
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5.4 Injector Actuation Circuit
z In order to improve injector responsiveness, the actuation voltage has been changed to high voltage, speeding up both
solenoid magnetization and the response of the TWV. The EDU or the charge circuit in the ECU raises the respective
battery voltage to approximately 110V, which is supplied to the injector by signal from the ECU to actuate the injector.
Q000868E
INJ#1 (No.1 Cylinder)
ECU
Injector
INJ#2 (No.3 Cylinder)
INJ#3 (No.4 Cylinder)
INJ#4 (No.2 Cylinder)
Charging Circuit
IJt
IJf
EDU
Actuating Current
ECU
Actuating Current
ECU Direct Actuation
EDU Actuation
2WV#3 (No.3 Cylinder)
2WV#4 (No.6 Cylinder)
2WV#5 (No.2 Cylinder)
2WV#6 (No.4 Cylinder)
Injector
Common 2
Common 1
2WV#1 (No.1 Cylinder)
2WV#2 (No.5 Cylinder)
Constant
Amperage Circuit
High Voltage
Generation Circuit
Control
Circuit
Constant
Amperage Circuit
Constant
Amperage Circuit
High Voltage Generation Circuit