Nissan Almera Tino V10. Manual - part 589

EC-1182

[YD (WITH EURO-OBD)]

DTC P1268 - P1271 FUEL INJECTOR

PFP:16600

Component Description

EBS013FN

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

EBS013FO

Specification data are reference values.

ECM Terminals and Reference Value

EBS013FP

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)

O/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-1183

[YD (WITH EURO-OBD)]

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

On Board Diagnosis Logic

EBS013FQ

This self-diagnosis has the one trip detection logic.
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-1184

[YD (WITH EURO-OBD)]

DTC P1268 - P1271 FUEL INJECTOR

DTC Confirmation Procedure

EBS013FR

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

Turn ignition switch ON, and select “DATA MONITOR” mode
with CONSULT-II.

Restart engine and let it idle for about 15 minutes.

If DTC is detected, go to

EC-1186, "Diagnostic Procedure"

If DTC is not detected, go to next step.

Drive vehicle and maintain the following conditions for at least
60 seconds.

If DTC is detected, go to

EC-1186, "Diagnostic Procedure"

WITHOUT CONSULT-II

Follow the procedure “WITH CONSULT-II” above.

CKPS·RPM

700 - 2000 rpm (A constant rotation is maintained)

COOLAN TEMP/S

Less than 75

C (167

Shift lever

Suitable position

Accelerator pedal

Hold the accelerator pedal as steady as possible.

PBIB2156E

DTC P1268 - P1271 FUEL INJECTOR

EC-1185

[YD (WITH EURO-OBD)]

Wiring Diagram

EBS013FS

MBWA0633E

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