2003 NISSAN X-TRAIL Service Repair Manual

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Page 1657 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0093 FUEL SYSTEM
EC-1279
[YD (WITHOUT EURO-OBD)]
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5. Select “PRES REGULATOR” in “ACTIVE TEST MODE” with
CONSULT-II.
6. Start engine and keep engine speed 2,000

Page 1658 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-1280
[YD (WITHOUT EURO-OBD)]
DTC P0102, P0103 MAF SENSOR

DTC P0102, P0103 MAF SENSORPFP:22680
Component DescriptionEBS011YG
The mass air flow sensor is placed in the stream of intake air. It mea-

EC-1280
[YD (WITHOUT EURO-OBD)]
DTC P0102, P0103 MAF SENSOR

DTC P0102, P0103 MAF SENSORPFP:22680
Component DescriptionEBS011YG
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 ModeEBS011YH
Specification data are reference values.
ECM Terminals and Reference ValueEBS011YI
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 LogicEBS011YJ
The MI will not light up for these self-diagnoses.
DTC Confirmation ProcedureEBS011YK
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.
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
P0102Mass air flow sensor circuit
low inputAn excessively low voltage from the sensor is
sent to ECM.
Harness or connectors
(The sensor circuit is open or
shorted.)
Mass air flow sensor P0103Mass air flow sensor circuit
high inputAn excessively high voltage from the sensor is
sent to ECM.

Page 1659 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0102, P0103 MAF SENSOR
EC-1281
[YD (WITHOUT EURO-OBD)]
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WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least

Page 1660 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-1282
[YD (WITHOUT EURO-OBD)]
DTC P0102, P0103 MAF SENSOR

Wiring DiagramEBS011YL
TBWA0565E

Page 1661 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0102, P0103 MAF SENSOR
EC-1283
[YD (WITHOUT EURO-OBD)]
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Diagnostic ProcedureEBS011YM
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten en

Page 1662 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-1284
[YD (WITHOUT EURO-OBD)]
DTC P0102, P0103 MAF SENSOR

2. CHECK MAFS POWER SUPPLY CIRCUIT
1. Disconnect mass air flow sensor harness connector.
2. Turn ignition switch ON.
3. Check voltage betw

Page 1663 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0102, P0103 MAF SENSOR
EC-1285
[YD (WITHOUT EURO-OBD)]
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5. CHECK MAFS INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between mass air flow sensor t

Page 1664 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-1286
[YD (WITHOUT EURO-OBD)]
DTC P0112, P0113 IAT SENSOR

DTC P0112, P0113 IAT SENSORPFP:22630
Component DescriptionEBS011YP
The intake air temperature sensor is built into mass air flow sensor.
T

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