NISSAN X-TRAIL 2003 Service Repair Manual

EVAPORATIVE EMISSION SYSTEM
EC-473
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EVAPORATIVE EMISSION SYSTEMPFP:14950
DescriptionEBS010VX
SYSTEM DESCRIPTION
The evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere from the fuel
system. This reduction of hydrocarbons is accomplished by activated charcoals in the EVAP canister.
The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the
vapor is stored there when the engine is not operating or when refueling to the fuel tank.
The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the
engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the
engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is
proportionally regulated as the air flow increases.
EVAP canister purge volume control solenoid valve also shuts off the vapor purge line during decelerating and
idling.
PBIB0491E

EC-474
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EVAPORATIVE EMISSION SYSTEM

EVAPORATIVE EMISSION LINE DRAWING
QR20DE Engine Models
PBIB0490E

EVAPORATIVE EMISSION SYSTEM
EC-475
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QR25DE Engine Models
PBIB1998E

EC-476
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EVAPORATIVE EMISSION SYSTEM

Component InspectionEBS010VY
EVAP CANISTER
Check EVAP canister as follows:
1. Block port B . Orally blow air through port A .
Check that air flows freely through port C .
2. Block port A . Orally blow air through port B .
Check that air flows freely through port C .
FUEL CHECK VALVE
1. Blow air through connector on fuel tank side.
A considerable resistance should be felt and a portion of air flow
should be directed toward the EVAP canister side.
2. Blow air through connector on EVAP canister side.
Air flow should be smoothly directed toward fuel tank side.
3. If fuel check valve is suspected of not properly functioning in
steps 1 and 2 above, replace it.
FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FILLER CAP)
1. Wipe clean valve housing.
2. Check valve opening pressure and vacuum.
3. If out of specification, replace fuel filler cap as an assembly.
PBIB0663E
SEF552Y
SEF989X
Pressure: 15.3 - 20.0 kPa (0.153 - 0.200 bar,
0.156 - 0.204 kg/cm
2 , 2.22 - 2.90 psi)
Va c u u m :−6.0 to −3.4 kPa (−0.060 to −0.034 bar,
−0.061 to −0.035 kg/cm
2 , −0.87 to −0.49 psi)
SEF943S

EVAPORATIVE EMISSION SYSTEM
EC-477
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WATER SEPARATOR
1. Check visually for insect nests in the water separator air inlet.
2. Check visually for cracks or flaws in the appearance.
3. Check visually for cracks or flaws in the hose.
4. Check that A and C are not clogged by blowing air into B with
A , and then C plugged.
5. In case of NG in items 2 - 4, replace the parts.
NOTE:

Do not disassemble water separator.
EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to EC-271, "Component Inspection" .
PBIB1032E

EC-478
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POSITIVE CRANKCASE VENTILATION

POSITIVE CRANKCASE VENTILATIONPFP:11810
DescriptionEBS010VZ
SYSTEM DESCRIPTION
This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake
manifold. During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the
PCV valve. Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of venti-
lating air. The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air
passes through the hose connecting air inlet tubes to rocker cover. Under full-throttle condition, the manifold
vacuum is insufficient to draw the blow-by flow through the valve. The flow goes through the hose connection
in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not
meet the requirement. This is because some of the flow will go
through the hose connection to the air inlet tubes under all condi-
tions.
Component InspectionEBS010W0
PCV (POSITIVE CRANKCASE VENTILATION) VALVE
With engine running at idle, remove PCV valve from rocker cover. A
properly working valve makes a hissing noise as air passes through
it. A strong vacuum should be felt immediately when a finger is
placed over valve inlet.
PBIB0492E
PBIB1588E
PBIB1589E

POSITIVE CRANKCASE VENTILATION
EC-479
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PCV VALVE VENTILATION HOSE
1. Check hoses and hose connections for leaks.
2. Disconnect all hoses and clean with compressed air. If any hose
cannot be freed of obstructions, replace.
S-ET277

EC-480
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SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Fuel PressureEBS010W1
Idle Speed and Ignition TimingEBS010W2
*: Under the following conditions:

Air conditioner switch: OFF

Electric load: OFF (Lights, heater fan & rear window defogger)

Steering wheel: Kept in straight-ahead position
Calculated Load ValueEBS010W3
Mass Air Flow SensorEBS010W4
*: Engine is warmed up to normal operating temperature and running under no-load.
Intake Air Temperature SensorEBS010W5
Engine Coolant Temperature SensorEBS010W6
Heated Oxygen Sensor 1 HeaterEBS010W7
Fuel pressure at idle
Approximately 350 kPa (3.5bar, 3.57kg/cm2 , 51psi)
Target idle speedQR20DEM/T No load* (in Neutral position) 650±50 rpm
A/T No load* (in P or N position)
700±50 rpm
QR25DEM/T No load* (in Neutral position)
A/T No load* (in P or N position)
Air conditioner: ONQR20DEM/T In Neutral position
725 rpm or more
A/T In P or N position
QR25DEM/T In Neutral position 750 rpm or more
A/T In P or N position 700 rpm or more
Ignition timingQR20DEM/T In Neutral position
15°±5° BTDC A/T In P or N position
QR25DEM/T In Neutral position
A/T In P or N position
Calculated load value% (Using CONSULT-II or GST)
At idle10 - 35
At 2,500 rpm10 - 35
Supply voltageBattery voltage (11 - 14V)
Output voltage at idle0.7 - 1.1*V (QR20DE)
0.8 - 1.2*V (QR25DE)
Mass air flow (Using CONSULT-II or GST)1.0 - 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)1.94 - 2.06
80 (176)0.295 - 0.349
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)] 3.3 - 4.0Ω

SERVICE DATA AND SPECIFICATIONS (SDS)
EC-481
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Heated Oxygen sensor 2 HeaterEBS010W8
Crankshaft Position Sensor (POS)EBS010W9
Refer to EC-252, "Component Inspection" .
Camshaft Position Sensor (PHASE)EBS010WA
Refer to EC-259, "Component Inspection" .
Throttle Control MotorEBS010WB
InjectorEBS010WC
Fuel PumpEBS010WD
Resistance [at 25°C (77°F)] 5.0 - 7.0Ω
Resistance [at 25°C (77°F)] Approximately 1 - 15Ω
Resistance [at 10 - 60°C (50 - 140°F)] 13.5 - 17.5Ω
Resistance [at 25°C (77°F)] Approximately 0.2 - 5.0Ω

EC-482
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INDEX FOR DTC

[QR (WITHOUT EURO-OBD)]INDEX FOR DTCPFP:00024
Alphabetical IndexEBS010WE
Check if the vehicle is a model with Euro-OBD (E-OBD) system or not by the Type approval number on the
identification plate. Refer to GI-44, "
IDENTIFICATION PLATE" .
NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-579, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
Items
(CONSULT-II screen terms)DTC*1
TripMI lighting
upReference page
CONSULT-II*2ECM*3
APP SEN 1/CIRC P2122 2122 1×EC-740
APP SEN 1/CIRC P2123 2123 1×EC-740
APP SEN 2/CIRC P2127 2127 1×EC-747
APP SEN 2/CIRC P2128 2128 1×EC-747
APP SENSOR P2138 2138 1×EC-763
BRAKE SW/CIRCUIT P1805 1805 1×EC-733
CAN COMM CIRCUIT U1000
1000*52—EC-579
CAN COMM CIRCUIT U1001
1001*52—EC-579
CKP SEN/CIRCUIT P0335 0335 2×EC-638
CMP SEN/CIRC-B1 P0340 0340 2×EC-646
CTP LEARNING P1225 1225 2 —EC-716
CTP LEARNING P1226 1226 2 —EC-718
ECM P0605 0605 1 or 2× or —EC-661
ECM BACK UP/CIRC P1065 1065 2×EC-664
ECT SEN/CIRCUIT P0117 0117 2×EC-597
ECT SEN/CIRCUIT P0118 0118 2×EC-597
ENG OVER TEMP P1217 1217 1×EC-700
ETC ACTR P1121 1121 1×EC-668
ETC FUNCTION/CIRC P1122 1122 1×EC-671
ETC MOT P1128 1128 1×EC-690
ETC MOT PWR P1124 1124 1×EC-682
ETC MOT PWR P1126 1126 1×EC-682
HO2S1 (B1) P0132 0132 2
×*8 or —*7EC-611
HO2S1 (B1) P0134 0134 2×EC-618
INT/V TIM CONT-B1 P0011 0011 2×EC-582
KNOCK SEN/CIRC-B1 P0327 0327 2 —EC-633
KNOCK SEN/CIRC-B1 P0328 0328 2 —EC-633
MAF SEN/CIRCUIT P0102 0102 1×EC-590
MAF SEN/CIRCUIT P0103 0103 1×EC-590
NATS MALFUNCTION P1610 - P1615 1610 - 1615 2 —EC-515
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.No DTC
Flashing*4—
Flashing*4EC-517
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000———
PW ST P SEN/CIRC P0550 0550 2 —EC-656