2005 NISSAN NAVARA Repair Workshop Manual

Page 1225 of 3171

NISSAN NAVARA 2005  Repair Workshop Manual DTC P1272 FUEL PUMP
EC-245
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DTC P1272 FUEL PUMPPFP:16700
DescriptionEBS01KJH
When the fuel pressure in fuel rail increases to excessively high, fuel
pressure relief valve (1)

Page 1226 of 3171

NISSAN NAVARA 2005  Repair Workshop Manual EC-246
DTC P1272 FUEL PUMP
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS01KJK
The MI will not light up for this self-diagnosis.

Page 1227 of 3171

NISSAN NAVARA 2005  Repair Workshop Manual DTC P1272 FUEL PUMP
EC-247
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2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
4. I

Page 1228 of 3171

NISSAN NAVARA 2005  Repair Workshop Manual EC-248
DTC P1272 FUEL PUMP
Wiring Diagram
EBS01KJM
MBWA1050E

Page 1229 of 3171

NISSAN NAVARA 2005  Repair Workshop Manual DTC P1272 FUEL PUMP
EC-249
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Diagnostic ProcedureEBS01KJN
1.PERFORM FUEL PUMP LEARNING VALUE CLEARING
NOTE:
If the DTC is detected because of air mixed with fuel (i.e.: caused

Page 1230 of 3171

NISSAN NAVARA 2005  Repair Workshop Manual EC-250
DTC P1272 FUEL PUMP
4.CHECK FUEL PUMP
Refer toEC-250, "
Component Inspection".
OK or NG
OK >> GO TO 5.
NG >> GO TO 7.
5.CHECK FUEL RAIL PRESSURE SENSOR
Refer toEC-122, "
Component Inspection".

Page 1231 of 3171

NISSAN NAVARA 2005  Repair Workshop Manual DTC P1273 FUEL PUMP
EC-251
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DTC P1273 FUEL PUMPPFP:16700
DescriptionEBS01KJQ
To control the amount of the fuel inhalation of the fuel pump, a plunger is built into the fuel pu

Page 1232 of 3171

NISSAN NAVARA 2005  Repair Workshop Manual EC-252
DTC P1273 FUEL PUMP
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS01KJT
The MI will not light up for this self-diagnosis.