NISSAN X-TRAIL 2003 Electronic Repair Manual

EVAPORATIVE EMISSION SYSTEM
EC-647
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EVAPORATIVE EMISSION SYSTEMPFP:14950
DescriptionEBS00BAD
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-648
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EVAPORATIVE EMISSION SYSTEM
EVAPORATIVE EMISSION LINE DRAWING
PBIB0490E

EVAPORATIVE EMISSION SYSTEM
EC-649
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Component InspectionEBS00BAE
EVAP CANISTER
Check EVAP canister as follows:
1. Block portB. Orally blow air through portA.
Check that air flows freely through portC.
2. Block portA. Orally blow air through portB.
Check that air flows freely through portC.
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.
EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer toEC-607, "Component Inspection".
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)
Vac uu m :-6.0 to-3.3 kPa (-0.060 to-0.033 bar,
-0.061 to-0.034 kg/cm
2,-0.87 to-0.48 psi)
SEF943S

EC-650
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POSITIVE CRANKCASE VENTILATION
POSITIVE CRANKCASE VENTILATION
PFP:11810
DescriptionEBS00BAF
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 InspectionEBS00BAG
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
SEF559A
SEC137A

POSITIVE CRANKCASE VENTILATION
EC-651
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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-652
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
PFP:00030
Fuel PressureEBS00BAH
Idle Speed and Ignition TimingEBS00BAI
*1: Under the following conditions:
lAir conditioner switch: OFF
lElectric load: OFF (Lights, heater fan & rear window defogger)
lSteering wheel: Kept in straight-ahead position
Calculated Load ValueEBS00BAJ
Mass Air Flow SensorEBS00BAK
*: Engine is warmed up to normal operating temperature and running under no-load.
Intake Air Temperature SensorEBS00BAL
Engine Coolant Temperature SensorEBS00BAM
Heated Oxygen Sensor 1 HeaterEBS00BAN
Heated Oxygen sensor 2 HeaterEBS00BAO
Crankshaft Position Sensor (POS)EBS00BAP
Refer toEC-505, "Component Inspection".
Camshaft Position Sensor (PHASE)EBS00BAQ
Refer toEC-512, "Component Inspection".
Fuel pressure at idle kPa (bar, kg/cm2,psi)Approximately 350 (3.5, 3.7, 51)
Ta r g e t i d l e s p e e d
No-load*1(in“P”orN”position)A/T: 700±50 rpm
M/T: 650±50 rpm
Air conditioner: ON In “P” or N” position 725 rpm or more
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
Massairflow(UsingCONSULT-IIorGST)1.4 - 4.0 g·m/sec at idle*
4.0 - 10.0 g·m/sec at 2,500 rpm*
Temperature°C(°F) Resistance kW
25 (77)1.9 - 2.1
80 (176)0.31 - 0.37
Temperature°C(°F) Resistance kW
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 - 4.3W
Resistance [at 25°C(77°F)] 2.3 - 4.3W

SERVICE DATA AND SPECIFICATIONS (SDS)
EC-653
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Throttle Control MotorEBS00BAR
InjectorEBS00BAS
Fuel PumpEBS00BAT
Resistance [at 25°C(77°F)] Approximately 1 - 15W
Resistance [at 20°C(68°F)] 13.5 - 17.5W
Resistance [at 25°C(77°F)] Approximately 1.0W

EC-654
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INDEX FOR DTC
[YD]INDEX FOR DTCPFP:00024
Alphabetical IndexEBS00368
X: Applicable —: Not applicable
DTC No. IndexEBS0036C
X: Applicable —: Not applicable Items
(CONSULT-II screen terms)DTC MI illumination Reference page
ACCEL POS SENSOR P0120´EC-715
ACCEL POS SW (F/C) P1510´EC-783
BATTERY VOLTAGE P1660´EC-794
CAM POS SEN/CIR P0340´EC-739
COOLANT TEMP SEN P0115´EC-711
CR PRES SEN P0190´EC-723
CRANK POS SEN (TDC) P0335´EC-734
CYL1 INJECTOR P0201´EC-727
CYL2 INJECTOR P0202´EC-727
CYL3 INJECTOR P0203´EC-727
CYL4 INJECTOR P0204´EC-727
ECM 1 P1606´EC-788
ECM 10 P1107´EC-749
ECM 15 P1621 —EC-790
FUEL LEAK FNCTN P1305´EC-781
INJ DRIVE UNIT P1216´EC-754
INJ1 CORREC R P1301 —EC-777
INJ2 CORREC R P1302 —EC-777
INJ3 CORREC R P1303 —EC-777
INJ4 CORREC R P1304 —EC-777
MAS AIR FLOW SEN P0100´EC-706
NATS MALFUNCTION P1610 - P1617 —BL-70
NO DTC IS DETECTED.
FURTHER TESTING MAY BE REQUIRED.P0000——
OVER HEAT P1217´EC-761
P9·FUEL TEMP SEN P1180´EC-751
SUCTION CONT/V1 P1233´EC-772
SUCTION CONT/V2 P1234´EC-772
VEHICLE SPEED SEN P0500´EC-744
DTCItems
(CONSULT-II screen item)MI illumination Reference page
P0000NO DTC IS DETECTED.
FURTHER TESTING MAY BE REQUIRED.——
P0100 MASS AIR FLOW SEN´EC-706
P0115 COOLANT TEMP SEN´EC-711
P0120 ACCEL POS SENSOR´EC-715
P0190 CR PRES SEN´EC-723
P0201 CYL1 INJECTOR´EC-727
P0202 CYL2 INJECTOR´EC-727

INDEX FOR DTC
EC-655
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P0203 CYL3 INJECTOR´EC-727
P0204 CYL4 INJECTOR´EC-727
P0335 CRANK POS SEN (TDC)´EC-734
P0340 CAM POS SEN/CIR´EC-739
P0500 VEHICLE SPEED SEN´EC-744
P1107 ECM 10´EC-749
P1180 P9 ·FUEL TEMP SEN´EC-751
P1216 INJ DRIVE UNIT´EC-754
P1217 OVER HEAT´EC-761
P1233 SUCTION CONT/V1´EC-772
P1234 SUCTION CONT/V2´EC-772
P1301 INJ1 CORREC R —EC-777
P1302 INJ2 CORREC R —EC-777
P1303 INJ3 CORREC R —EC-777
P1304 INJ4 CORREC R —EC-777
P1305 FUEL LEAK FNCTN´EC-781
P1510 ACCEL POS SW (F/C)´EC-783
P1606 ECM 1´EC-788
P1610 - P1617 NATS MALFUNTION —BL-70
P1621 ECM 15 —EC-790
P1660 BATTERY VOLTAGE´EC-794
DTCItems
(CONSULT-II screen item)MI illumination Reference page

EC-656
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PRECAUTIONS
PRECAUTIONS
PFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EBS008RR
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WAR NIN G:
lTo avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
lImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
lDo not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow harness connector.
PrecautionsEBS00317
lBefore connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative
battery terminal. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned off.
lDo not disassemble ECM.
lWhen connecting or disconnecting pin connectors into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.
lSecurely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in coil and condenser, thus resulting in
damage to IC's.
lKeep engine control system harness at least 10cm (4 in)
away from adjacent harness, to prevent engine control sys-
tem malfunctions due to receiving external noise, degraded
operation of IC's, etc.
lKeep engine control system parts and harness dry.
SEF289H
PBIB0378E
SEF291H