Nissan Almera Tino V10. Manual — part 660
EC-1466
[YD (WITHOUT EURO-OBD)]
DTC P1273 FUEL PUMP
5.
CHECK FUEL PUMP
Refer to
EC-1466, "Component Inspection"
.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 6.
6.
REPLACE FUEL PUMP
1.
Replace fuel pump.
2.
Perform Fuel Pump Learning Valve Clearing. Refer to
EC-1270, "Fuel Pump Learning Value Clearing"
.
>> INSPECTION END
7.
CHECK INTERMITTENT INCIDENT
Refer to
EC-1309, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
EBS014ZT
FUEL PUMP
1.
Check continuity between fuel supply pump terminals 1 and 2.
2.
If NG, replace fuel pump.
Removal and Installation
EBS014ZU
FUEL PUMP
Refer to
.
Continuity should exist.
MBIB0623E
DTC P1274 FUEL PUMP
EC-1467
[YD (WITHOUT EURO-OBD)]
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EC
DTC P1274 FUEL PUMP
PFP:16700
Description
EBS014ZV
To control the amount of the fuel inhalation of the fuel pump, a plunger is built into the fuel pump. When the
amount of the fuel inhalation of fuel increases, the fuel pump raises the fuel exhalation pressure. As a result,
the fuel injection pressure is raised. When the load of the engine increases, the ECM sends a signal to the fuel
pump to raise the injection pressure.
CONSULT-II Reference Value in Data Monitor Mode
EBS014ZW
Specification data are reference values.
ECM Terminals and Reference Value
EBS014ZX
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.
MONITOR ITEM
CONDITION
SPECIFICATION
PUMP CURRENT
●
Engine: After warming up
●
Air conditioner switch: OFF
●
Shift lever: Neutral position
●
No-load
Idle
1,700 - 1,900 mA
2,000 rpm
1,600 - 1,800 mA
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA
(DC Voltage and Pulse Signal)
10
Y/L
Fuel pump power supply
[Engine is running]
●
Warm-up condition
●
Idle speed
0 - 12.5V
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,000 rpm
0 - 12.5V
MBIB0885E
MBIB0886E
EC-1468
[YD (WITHOUT EURO-OBD)]
DTC P1274 FUEL PUMP
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis Logic
EBS014ZY
DTC Confirmation Procedure
EBS014ZZ
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.
Tuning ignition switch ON.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Start engine and let idle for at least 5 seconds.
4.
If DTC is detected, go to
EC-1470, "Diagnostic Procedure"
.
29
L
Fuel pump
[Engine is running]
●
Warm-up condition
●
Idle speed
0.5 - 1.0V
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,000 rpm
0.5 - 1.0V
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA
(DC Voltage and Pulse Signal)
MBIB0887E
MBIB0888E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1274
Fuel pump protection
Fuel pressure is too much higher than the
target value.
●
Harness or connectors
(The fuel pump circuit is open or shorted.)
●
Fuel pump
●
Fuel rail pressure sensor
SEF817Y
DTC P1274 FUEL PUMP
EC-1469
[YD (WITHOUT EURO-OBD)]
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EC
Wiring Diagram
EBS01500
YEC509A
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