Nissan Almera Tino V10. Instruction — part 656
EC-1450
[YD (WITHOUT EURO-OBD)]
DTC P1268 - P1271 FUEL INJECTOR
DTC P1268 - P1271 FUEL INJECTOR
PFP:16600
Component Description
EBS014Z4
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injec-
tor is energized. The energized coil pulls the needle valve back and
allows fuel to flow through the fuel injector into the intake cylinder.
The amount of fuel injected depends upon the injection pulse dura-
tion. Pulse duration is the length of time the fuel injector remains
open. The ECM controls the injection pulse duration based on
engine fuel needs.
CONSULT-II Reference Value in Data Monitor Mode
EBS014Z5
Specification data are reference values.
ECM Terminals and Reference Value
EBS014Z6
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.
PBIB0465E
MONITOR ITEM
CONDITION
SPECIFICATION
MAIN INJ WID
●
Engine: After warming up
●
Shift lever: Neutral position
●
Idle speed
No-load
0.68 - 0.78 msec
Blower fan switch: ON
Rear window defogger switch: ON
0.78 - 0.88 msec
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA
(DC Voltage and Pulse Signal)
4
5
O/B
B
Fuel injector power supply
(For cylinder No. 1 and 4)
Fuel injector power supply
(For cylinder No. 2 and 3)
[Engine is running]
●
Warm-up condition
●
Idle speed
5 - 10V
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,000 rpm
5 - 10V
MBIB0883E
MBIB0884E
DTC P1268 - P1271 FUEL INJECTOR
EC-1451
[YD (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis Logic
EBS014Z7
The MI will not light up for these self-diagnoses.
21
22
23
24
L
PU/W
L
PU/W
Fuel injector No. 2
Fuel injector No. 2
Fuel injector No. 3
Fuel injector No. 3
[Engine is running]
●
Warm-up condition
●
Idle speed
0 - 9V
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,000 rpm
0 - 9V
40
41
42
43
B/P
PU/W
B/P
PU/W
Fuel injector No. 4
Fuel injector No. 4
Fuel injector No. 1
Fuel injector No. 1
[Engine is running]
●
Warm-up condition
●
Idle speed
0 - 9V
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,000 rpm
0 - 9V
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA
(DC Voltage and Pulse Signal)
MBIB0881E
MBIB0882E
MBIB0881E
MBIB0882E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1268
No. 1 cylinder fuel injector
The valve built into No. 1 cylinder fuel injector is not closed
properly (stuck open) when the injector is not energized.
●
Fuel injector
P1269
No. 2 cylinder fuel injector
The valve built into No. 2 cylinder fuel injector is not closed
properly (stuck open) when the injector is not energized.
P1270
No. 3 cylinder fuel injector
The valve built into No. 3 cylinder fuel injector is not closed
properly (stuck open) when the injector is not energized.
P1271
No. 4 cylinder fuel injector
The valve built into No. 4 cylinder fuel injector is not closed
properly (stuck open) when the injector is not energized.
EC-1452
[YD (WITHOUT EURO-OBD)]
DTC P1268 - P1271 FUEL INJECTOR
DTC Confirmation Procedure
EBS014Z8
CAUTION:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws when driv-
ing.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1.
Turn ignition switch ON, and select “DATA MONITOR” mode
with CONSULT-II.
2.
Restart engine and let it idle for about 15 minutes.
3.
If DTC is detected, go to
EC-1454, "Diagnostic Procedure"
.
If DTC is not detected, go to next step.
4.
Drive vehicle and maintain the following conditions for at least
60 seconds.
5.
If DTC is detected, go to
EC-1454, "Diagnostic Procedure"
.
CKPS·RPM
700 - 2000 rpm (A constant rotation is maintained)
COOLAN TEMP/S
Less than 75
°
C (167
°
F)
Shift lever
Suitable position
Accelerator pedal
Hold the accelerator pedal as steady as possible.
PBIB2156E
DTC P1268 - P1271 FUEL INJECTOR
EC-1453
[YD (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Wiring Diagram
EBS014Z9
MBWA0633E
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