2001 NISSAN X-TRAIL Service Repair Manual

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Page 1545 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual POWER SUPPLY CIRCUIT FOR ECM
EC-1195
[QR20(WITHOUT EURO-OBD)]
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3.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors M61, F41
●Fuse block (J/B) connector M

Page 1546 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-1196
[QR20(WITHOUT EURO-OBD)]
POWER SUPPLY CIRCUIT FOR ECM
6. DETECT MALFUNCTIONING PART
Check the following.
●10A fuse
●20A fuse
●Harness connectors E60, F36
●Harness connectors E61, F38
�

Page 1547 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual POWER SUPPLY CIRCUIT FOR ECM
EC-1197
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9.CHECK ECM POWER SUPPLY CIRCUIT-IV
1. Disconnect ECM relay.
2. Check voltage between ECM relay terminal 3

Page 1548 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-1198
[QR20(WITHOUT EURO-OBD)]
POWER SUPPLY CIRCUIT FOR ECM
13. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-II
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harnes

Page 1549 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual DTC U1000 CAN COMMUNICATION LINE
EC-1199
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DTC U1000 CAN COMMUNICATION LINEPFP:23710
DescriptionEBS00N4I
CAN (Controller Area Network) is a serial comm

Page 1550 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-1200
[QR20(WITHOUT EURO-OBD)]
DTC U1000 CAN COMMUNICATION LINE
Wiring Diagram
EBS00N4L
TBWA0096E

Page 1551 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual DTC U1000 CAN COMMUNICATION LINE
EC-1201
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Diagnostic ProcedureEBS00N4M
1.INSPECTION START
1. Turn ignition switch “ON”.
2. Select “CAN DIAG SUPP

Page 1552 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-1202
[QR20(WITHOUT EURO-OBD)]
DTC P0102, P0103 MAF SENSOR
DTC P0102, P0103 MAF SENSOR
PFP:22680
Component DescriptionEBS00N4N
The mass air flow sensor is placed in the stream of intake air. It mea-

EC-1202
[QR20(WITHOUT EURO-OBD)]
DTC P0102, P0103 MAF SENSOR
DTC P0102, P0103 MAF SENSOR
PFP:22680
Component DescriptionEBS00N4N
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 ModeEBS00N4O
Specification data are reference values.
ECM Terminals and Reference ValueEBS00N4P
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

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