2001 NISSAN X-TRAIL diagram

EC-1096
[QR20(WITH EURO-OBD)]
FUEL PUMP CIRCUIT
4. CHECK CONDENSER CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect condenser harness connector.
3. Check harness continuity between fuel pump relay terminal 3 and condenser terminal 1, condenser termi-
nal 2 and body ground.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors B22, B128 (RHD models)
●Harness for open or short between fuel pump relay and condenser
●Harness for open or short between condenser and body ground
>> Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK CONDENSER
Refer to EC-1097, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace condenser.
7. CHECK FUEL PUMP POWER SUPPLY AND GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect fuel level sensor unit and fuel pump harness con-
nector.
3. Check harness continuity between
fuel pump relay terminal 3 and fuel pump terminal 5,
fuel pump terminal 3 and body ground.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors B22, B128 (RHD models)
●Harness for open or short between fuel pump relay and fuel pump
●Harness for open or short between fuel pump and body ground
>> Repair open circuit or short to ground or short to power in harness or connectors. Continuity should exist.
Continuity should exist.
PBIB0506E

FUEL PUMP CIRCUIT
EC-1097
[QR20(WITH EURO-OBD)]
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EC
9.CHECK FUEL PUMP RELAY OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 29 and fuel pump relay terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 11.
NG >> GO TO 10.
10.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors B1, M17 (LHD models)
●Harness connectors B2, M18 (RHD models)
●Harness connectors M61, F41
●Harness for open or short between ECM and fuel pump relay
>> Repair open circuit or short to ground or short to power in harness or connectors.
11 . CHECK FUEL PUMP RELAY
Refer to EC-1097, "
Component Inspection" .
OK or NG
OK >> GO TO 12.
NG >> Replace fuel pump relay.
12.CHECK FUEL PUMP
Refer to EC-1097, "
Component Inspection" .
OK or NG
OK >> GO TO 13.
NG >> Replace fuel pump.
13.CHECK INTERMITTENT INCIDENT
Refer to EC-847, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS00N2D
FUEL PUMP RELAY
Check continuity between terminals 3 and 5 under the following con-
ditions.Continuity should exist.
Conditions Continuity
12V direct current supply
between terminals 1 and 2Ye s
No current supply No
PBIB0098E

EC-1100
[QR20(WITH EURO-OBD)]
REFRIGERANT PRESSURE SENSOR
Wiring Diagram
EBS00N2H
TBWA0088E

EC-1102
[QR20(WITH EURO-OBD)]
REFRIGERANT PRESSURE SENSOR
4. CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between refrigerant pressure sensor terminal 1 and engine ground.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors E61, F38
●Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 83 and refrigerant pressure sensor terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7. DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors E61, F38
●Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-847, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace refrigerant pressure sensor.
NG >> Repair or replace.
Removal and InstallationEBS00N2J
REFRIGERANT PRESSURE SENSOR
Refer to ATC-129, "REFRIGERANT LINES" . Continuity should exist.
Continuity should exist.

EC-1104
[QR20(WITH EURO-OBD)]
ELECTRICAL LOAD SIGNAL
Wiring Diagram
EBS00N2M
TBWA0094E

EC-1110
[QR20(WITH EURO-OBD)]
ELECTRICAL LOAD SIGNAL
17. CHECK HEATER FAN SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Stop engine.
2. Disconnect ECM harness connector.
3. Disconnect A/C AUTO AMP. harness connector.
4. Check harness continuity between ECM terminal 55 and A/C AUTO AMP. terminal 19.
Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 19.
NG >> GO TO 18.
18. DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors M62, F42
●Harness for open and short between ECM and A/C AUTO AMP.
>> Repair open circuit or short to ground or short to power in harness or connectors.
19. CHECK INTERMITTENT INCIDENT
Perform EC-847, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Continuity should exist.

DATA LINK CONNECTOR
EC-1111
[QR20(WITH EURO-OBD)]
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DATA LINK CONNECTORPFP:24814
Wiring DiagramEBS00N2O
TBWA0097E

EC-1124
[QR20(WITHOUT EURO-OBD)]
PRECAUTIONS
●Do not depress accelerator pedal when starting.
●Immediately after starting, do not rev up engine unneces-
sarily.
●Do not rev up engine just prior to shutdown.
●When installing C.B. ham radio or a mobile phone, be sure
to observe the following as it may adversely affect elec-
tronic control systems depending on installation location.
–Keep the antenna as far as possible from the electronic
control units.
–Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Do not let them run parallel for a long distance.
–Adjust the antenna and feeder line so that the standing-
wave radio can be kept smaller.
–Be sure to ground the radio to vehicle body.
Wiring Diagrams and Trouble DiagnosisEBS00N3B
When you read Wiring diagrams, refer to the following:
●GI-13, "How to Read Wiring Diagrams"
●PG-2, "POWER SUPPLY ROUTING" for power distribution circuit
When you perform trouble diagnosis, refer to the following:
●GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES"
●GI-23, "How to Perform Efficient Diagnosis for an Electrical Incident"
SEF709Y
SEF708Y