Infiniti M45 (Y34). Manual — part 493
INJECTOR CIRCUIT
EC-661
C
D
E
F
G
H
I
J
K
L
M
A
EC
INJECTOR CIRCUIT
PFP:16600
Component Description
ABS002TQ
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the injector circuit, the coil in the injector is
energized. The energized coil pulls the ball valve back and allows
fuel to flow through the injector into the intake manifold. The amount
of fuel injected depends upon the injection pulse duration. Pulse
duration is the length of time the injector remains open. The ECM
controls the injection pulse duration based on engine fuel needs.
CONSULT-II Reference Value in Data Monitor Mode
ABS002TR
Specification data are reference values.
SEF375Z
MONITOR ITEM
CONDITION
SPECIFICATION
INJ PULSE-B1
INJ PULSE-B2
See
EC-128, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"
B/FUEL SCHDL
●
Engine: After warming up
●
Selector lever: P or N
●
Air conditioner switch: OFF
●
No load
Idle
2.3 - 2.9 msec
2,000 rpm
2.3 - 2.9 msec
EC-662
INJECTOR CIRCUIT
Wiring Diagram
ABS002TS
TBWA0311E
INJECTOR CIRCUIT
EC-663
C
D
E
F
G
H
I
J
K
L
M
A
EC
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
5
7
14
16
B/W
BR
OR/L
OR
Injector No. 1
Injector No. 3
Injector No. 5
Injector No. 7
[Engine is running]
●
Warm-up condition
●
Idle speed
NOTE:
The pulse cycle changes depending on rpm at idle.
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
Warm-up condition
●
Engine speed: 2,000 rpm
BATTERY VOLTAGE
(11 - 14V)
PBIB0042E
PBIB0043E
EC-664
INJECTOR CIRCUIT
TBWA0312E
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