2003 NISSAN X-TRAIL Service Repair Manual

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Page 1337 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0093 FUEL SYSTEM
EC-959
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DTC P0093 FUEL SYSTEMPFP:17520
On Board Diagnosis LogicEBS01185
DTC Confirmation ProcedureEBS01186
NOTE:
If DTC Confirmati

Page 1338 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-960
[YD (WITH EURO-OBD)]
DTC P0093 FUEL SYSTEM

2. PERFORM FUEL PUMP LEARNING VALUE CLEARING
NOTE:
If the DTC is detected because of air mixed with fuel (i.e.: caused by lack of fuel), it may beco

Page 1339 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0093 FUEL SYSTEM
EC-961
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6. REPLACE FUEL PUMP
1. Replace fuel pump.
2. Perform Fuel Pump Learning Value Clearing. Refer to EC-890, "
Fuel Pump Lear

Page 1340 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-962
[YD (WITH EURO-OBD)]
DTC P0093 FUEL SYSTEM

Removal and InstallationEBS01188
FUEL RAIL
Refer to EM-157, "INJECTION TUBE AND FUEL INJECTOR" .
FUEL PUMP
Refer to EM-161, "FUEL PUMP" .

Page 1341 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0101 MAF SENSOR
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DTC P0101 MAF SENSORPFP:22680
Component DescriptionEBS011OD
The mass air flow sensor is placed in the stream of intake air.

DTC P0101 MAF SENSOR
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DTC P0101 MAF SENSORPFP:22680
Component DescriptionEBS011OD
The mass air flow sensor is placed in the stream of intake air. It mea-
sures the intake flow rate by measuring a part of the entire intake
flow. The mass air flow sensor controls the temperature of the hot
wire to a certain amount. The heat generated by the hot wire is
reduced as the intake air flows around it. The more air, the greater
the heat loss.
Therefore, the electric current supplied to hot wire is changed to
maintain the temperature of the hot wire as air flow increases. The
ECM detects the air flow by means of this current change.
CONSULT-II Reference Value in Data Monitor ModeEBS011OE
Specification data are reference values.
ECM Terminals and Reference ValueEBS011OF
Specification data are reference values, and are measured between each terminal and ground.
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.
On Board Diagnosis LogicEBS011OG
PBIB1604E
MONITOR ITEM CONDITION SPECIFICATION
MAS AIR/FL SE*
Engine: After warming up
Air conditioner switch: OFF
Shift lever: Neutral position
No-loadIdle 1.5 - 2.0V
2,000 rpm 2.2 - 2.7V
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage)
54 W Mass air flow sensor[Engine is running]
Warm-up condition
Idle speed1.8 - 2.3V
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpm2.5 - 3.0V
67 —Sensor ground
(Sensors shield circuit)[Ignition switch ON]Approximately 0.3V
73 BMass air flow sensor
ground[Ignition switch ON]Approximately 0.3V
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0101
0101Mass air flow sensor cir-
cuit range/performance
problemImproper voltage from the sensor is sent to
ECM compared with the driving condition.
Harness or connectors
(The sensor circuit is open or
shorted.)
Mass air flow sensor
Intake air leaks
Air cleaner
Intake air temperature sensor
Turbocharger boost sensor

Page 1342 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-964
[YD (WITH EURO-OBD)]
DTC P0101 MAF SENSOR

DTC Confirmation ProcedureEBS011OH
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted,

Page 1343 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0101 MAF SENSOR
EC-965
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Wiring DiagramEBS011OI
TBWA0565E

Page 1344 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-966
[YD (WITH EURO-OBD)]
DTC P0101 MAF SENSOR

Diagnostic ProcedureEBS011OJ
1. CHECK INTAKE SYSTEM
1. Check air cleaner for clogging.
2. Check the following for connection and cracks.
–Air duct

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