2001 NISSAN X-TRAIL Service Repair Manual

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Page 1345 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual DTC P1065 ECM POWER SUPPLY
EC-995
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DTC P1065 ECM POWER SUPPLYPFP:23710
Component DescriptionEBS00MYQ
Battery voltage is supplied to the ECM even when the

Page 1346 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-996
[QR20(WITH EURO-OBD)]
DTC P1065 ECM POWER SUPPLY
Wiring Diagram
EBS00MYT
TBWA0129E

Page 1347 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual DTC P1065 ECM POWER SUPPLY
EC-997
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Diagnostic ProcedureEBS00MYU
1.CHECK ECM POWER SUPPLY
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness con

Page 1348 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-998
[QR20(WITH EURO-OBD)]
DTC P1065 ECM POWER SUPPLY
5. REPLACE ECM
1. Replace ECM.
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to EC

Page 1349 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual DTC P1102 MAF SENSOR
EC-999
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DTC P1102 MAF SENSORPFP:22680
Component DescriptionEBS00MYV
The mass air flow sensor is placed in the stream of intake air.

DTC P1102 MAF SENSOR
EC-999
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DTC P1102 MAF SENSORPFP:22680
Component DescriptionEBS00MYV
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. It consists of a hot film that is supplied with electric current from
the ECM. The temperature of the hot film is controlled by the ECM a
certain amount. The heat generated by the hot film is reduced as the
intake air flows around it. The more air, the greater the heat loss.
Therefore, the ECM must supply more electric current to maintain
the temperature of the hot film as air flow increases. The ECM
detects the air flow by means of this current change.
CONSULT-II Reference Value in Data Monitor ModeEBS00MYW
Specification data are reference values.
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.
ECM Terminals and Reference ValueEBS00MYX
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.
SEC266C
MONITOR ITEM CONDITION SPECIFICATION
MAS A/F SE-B1
●Engine: After warming up
●Air conditioner switch: OFF
●Shift lever: N
●No-loadIdle Approx. 1.0 - 1.5V
2,500 rpm Approx. 1.6 - 2.0V
CAL/LD VALUE
●Engine: After warming up
●Shift lever: N
●Air conditioner switch: OFF
●No-loadIdle 10% - 35%
2,500 rpm 10% - 35%
MASS AIRFLOW
●Engine: After warming up
●Shift lever: N
●Air conditioner switch: OFF
●No-loadIdle 1.0 - 4.0 g·m/s
2,500 rpm 4.0 - 10.0 g·m/s
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
72 OR Mass air flow sensor[Engine is running]
●Warm-up condition
●Idle speed1.1 - 1.5V
[Engine is running]
●Warm-up condition
●Engine speed is 2,500 rpm.1.6 - 2.0V
80 B/PMass air flow sensor
ground[Engine is running]
●Warm-up condition
●Idle speedApproximately 0V

Page 1350 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-1000
[QR20(WITH EURO-OBD)]
DTC P1102 MAF SENSOR
On Board Diagnosis Logic
EBS00MYY
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
DTC Confirmati

Page 1351 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual DTC P1102 MAF SENSOR
EC-1001
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Wiring DiagramEBS00MZ0
TBWA0055E

Page 1352 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-1002
[QR20(WITH EURO-OBD)]
DTC P1102 MAF SENSOR
Diagnostic Procedure
EBS00MZ1
1. RETIGHTEN GROUND SCREWS
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
>> GO TO 2.

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