2001 NISSAN X-TRAIL sensor

EC-1372
[QR20(WITHOUT EURO-OBD)]
FUEL PUMP CIRCUIT
FUEL PUMP
1. Disconnect fuel level sensor unit and fuel pump harness connector.
2. Check resistance between fuel level sensor unit and fuel pump
terminals 3 and 5.
CONDENSER
1. Turn ignition switch “OFF”.
2. Disconnect condenser harness connector.
3. Check resistance between condenser terminals as 1 and 2.
Removal and InstallationEBS00NAL
FUEL PUMP
Refer to FL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" . Resistance: Approximately 1.0Ω [at 25°C (77°F)]
PBIB0658E
Resistance: Above 1 MΩ at 25°C (77°F)
SEF124Y

REFRIGERANT PRESSURE SENSOR
EC-1373
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REFRIGERANT PRESSURE SENSORPFP:92136
Component DescriptionEBS00NAM
The refrigerant pressure sensor is installed at the liquid tank of the
air conditioner system. The sensor uses an electrostatic volume
pressure transducer to convert refrigerant pressure to voltage. The
voltage signal is sent to ECM, and ECM controls cooling fan system.
ECM Terminals and Reference ValueEBS00NAN
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.
PBIB0503E
SEF099X
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
58 B Sensors' ground[Engine is running]
●Warm-up condition
●Idle speedApproximately 0V
65 RSensor's power sup-
ply[Ignition switch “ON”]Approximately 5V
83 R/LRefrigerant pressure
sensor[Engine is running]
●Warm-up condition
●Both A/C switch and blower switch are “ON”.
(Compressor operates.)1.0 - 4.0V

EC-1374
[QR20(WITHOUT EURO-OBD)]
REFRIGERANT PRESSURE SENSOR
Wiring Diagram
EBS00NAO
TBWA0088E

REFRIGERANT PRESSURE SENSOR
EC-1375
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Diagnostic ProcedureEBS00NAP
1.CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Turn A/C switch and blower switch “ON”.
3. Check voltage between ECM terminal 83 and ground with CON-
SULT-II or tester.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2.CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Turn A/C switch and blower switch “OFF”.
2. Stop engine.
3. Disconnect refrigerant pressure sensor harness connector.
4. Turn ignition switch “ON”.
5. Check voltage between refrigerant pressure sensor terminal 3
and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors E61, F38
●Harness for open or short between ECM and refrigerant pressure sensor
>> Repair harness or connectors. Voltage: 1.0 - 4.0V
PBIB0659E
PBIB0503E
Voltage: Approximately 5V
SEF479Y

EC-1376
[QR20(WITHOUT 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-1192, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace refrigerant pressure sensor.
NG >> Repair or replace.
Removal and InstallationEBS00NAQ
REFRIGERANT PRESSURE SENSOR
Refer to ATC-129, "REFRIGERANT LINES" . Continuity should exist.
Continuity should exist.

SERVICE DATA AND SPECIFICATIONS (SDS)
EC-1391
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SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Fuel PressureEBS00NB0
Idle Speed and Ignition TimingEBS00NB1
*1: Under the following conditions:
●Air conditioner switch: OFF
●Electric load: OFF (Lights, heater fan & rear window defogger)
●Steering wheel: Kept in straight-ahead position
*2: It refrigerant pressure is low, the idle speed may not be increased.
Calculated Load ValueEBS00NB2
Mass Air Flow SensorEBS00NB3
*: Engine is warmed up to normal operating temperature and running under no-load.
Intake Air Temperature SensorEBS00NB4
Engine Coolant Temperature SensorEBS00NB5
Heated Oxygen Sensor 1 HeaterEBS00NB6
Heated Oxygen sensor 2 HeaterEBS00NB7
Crankshaft Position Sensor (POS)EBS00NB8
Refer to EC-1245, "Component Inspection" .
Camshaft Position Sensor (PHASE)EBS00NB9
Refer to EC-1251, "Component Inspection" .
Fuel pressure at idle kPa (bar, kg/cm2 , psi)Approximately 350 (3.5, 3.57, 51)
Target idle speed
No-load*1 (in “P” or N” position)A/T: 700±50 rpm
M/T: 650±50 rpm
Air conditioner: ONIn “P” or N” position
725 rpm or more*
2
Ignition timingIn “P” or N” position AT: 16°±5° BTDC
MT: 14°±5° BTDC
Calculated load value % (Using CONSULT-II or GST)
At idle10 - 35
At 2,500 rpm10 - 35
Supply voltageBattery voltage (11 - 14V)
Output voltage at idle1.1 - 1.5*V
Mass air flow (Using CONSULT-II or GST)1.4 - 4.0 g·m/sec at idle*
4.0 - 10.0 g·m/sec at 2,500 rpm*
Temperature °C (°F) Resistance kΩ
25 (77)1.9 - 2.1
80 (176)0.31 - 0.37
Temperature °C (°F) Resistance kΩ
20 (68) 2.1 - 2.9
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260
Resistance [at 25°C (77°F)] 2.3 - 4.3Ω
Resistance [at 25°C (77°F)] 2.3 - 4.3Ω

INDEX FOR DTC
EC-1393
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[YD]INDEX FOR DTCPFP:00024
Alphabetical IndexEBS00368
X: Applicable —: Not applicable
DTC No. IndexEBS0036C
X: Applicable —: Not applicable Items
(CONSULT-II screen terms) DTC TripMI lighting
upReference page
ACCEL POS SENSOR P0120 1×EC-1460
ACCEL POS SW (F/C) P1510 1×EC-1531
BATTERY VOLTAGE P1660 1×EC-1542
CAM POS SEN/CIR P0340 1×EC-1484
CAN COMM CIRCUIT U1000 1×EC-1448
COOLANT TEMP SEN P0115 1×EC-1456
CR PRES SEN P0190 1×EC-1468
CRANK POS SEN (TDC) P0335 1×EC-1479
CYL1 INJECTOR P0201 1×EC-1472
CYL2 INJECTOR P0202 1×EC-1472
CYL3 INJECTOR P0203 1×EC-1472
CYL4 INJECTOR P0204 1×EC-1472
ECM 1 P1606 1×EC-1536
ECM 10 P1107 1×EC-1494
ECM 15 P1621 1 —EC-1538
FUEL LEAK FNCTN P1305 1×EC-1529
INJ DRIVE UNIT P1216 1×EC-1501
INJ1 CORREC R P1301 1 —EC-1525
INJ2 CORREC R P1302 1 —EC-1525
INJ3 CORREC R P1303 1 —EC-1525
INJ4 CORREC R P1304 1 —EC-1525
MAS AIR FLOW SEN P0100 1×EC-1451
NATS MALFUNCTION P1610 - P1617 1 —BL-80
NO DTC IS DETECTED.
FURTHER TESTING MAY BE REQUIRED.P0000—— —
OVER HEAT P1217 1×EC-1508
P9·FUEL TEMP SEN P1180 1×EC-1496
SUCTION CONT/V1 P1233 1×EC-1519
SUCTION CONT/V2 P1234 1×EC-1519
TCS/CIRC P1212 1×EC-1500
TCS C/U FUNCTN P1211 1×EC-1499
VEHICLE SPEED SEN P0500 1×EC-1489
DTCItems
(CONSULT-II screen item) Trip MI lighting up Reference page
U1000 CAN COMM CIRCUIT 1×EC-1448
P0000NO DTC IS DETECTED.
FURTHER TESTING MAY BE REQUIRED.—— —
P0100 MASS AIR FLOW SEN 1×EC-1451
P0115 COOLANT TEMP SEN 1×EC-1456

EC-1394
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INDEX FOR DTC
P0120 ACCEL POS SENSOR 1×EC-1460
P0190 CR PRES SEN 1×EC-1468
P0201 CYL1 INJECTOR 1×EC-1472
P0202 CYL2 INJECTOR 1×EC-1472
P0203 CYL3 INJECTOR 1×EC-1472
P0204 CYL4 INJECTOR 1×EC-1472
P0335 CRANK POS SEN (TDC) 1×EC-1479
P0340 CAM POS SEN/CIR 1×EC-1484
P0500 VEHICLE SPEED SEN 1×EC-1489
P1107 ECM 10 1×EC-1494
P1180 P9·FUEL TEMP SEN 1×EC-1496
P1211 TCS C/U FUNCTN 1×EC-1499
P1212 TCS/CIRC 1×EC-1500
P1216 INJ DRIVE UNIT 1×EC-1501
P1217 OVER HEAT 1×EC-1508
P1233 SUCTION CONT/V1 1×EC-1519
P1234 SUCTION CONT/V2 1×EC-1519
P1301 INJ1 CORREC R 1 —EC-1525
P1302 INJ2 CORREC R 1 —EC-1525
P1303 INJ3 CORREC R 1 —EC-1525
P1304 INJ4 CORREC R 1 —EC-1525
P1305 FUEL LEAK FNCTN 1×EC-1529
P1510 ACCEL POS SW (F/C) 1×EC-1531
P1606 ECM 1 1×EC-1536
P1610 - P1617 NATS MALFUNTION 1 —BL-80
P1621 ECM 15 1 —EC-1538
P1660 BATTERY VOLTAGE 1×EC-1542
DTCItems
(CONSULT-II screen item) Trip MI lighting up Reference page