2003 NISSAN X-TRAIL transmission

ENGINE CONTROL SYSTEM
EC-389
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System ChartEBS00BET
*1: This sensor is not used to control the engine system under normal conditions.
*2: These signals are sent to the ECM through CAN communication line.
Multiport Fuel Injection (MFI) SystemEBS00BEU
INPUT/OUTPUT SIGNAL CHART
*1: Under normal conditions, this sensor is not for engine control operation.
*2: This signal is sent to the ECM through CAN communication line.Input (Sensor) ECM Function Output (Actuator)
lCamshaft position sensor (PHASE)
lCrankshaft position sensor (POS)
lMass air flow sensor
lEngine coolant temperature sensor
lHeated oxygen sensor 1
lThrottle position sensor
lAccelerator pedal position sensor
lPark/neutral position (PNP) switch
lIntake air temperature sensor
lPower steering pressure sensor
lIgnition switch
lBattery voltage
lKnock sensor
lRefrigerant pressure sensor
lHeated oxygen sensor 2 *1
lTCM (Transmission control module) *2
lESP/TCS/ABS control unit *2
lWheel sensor
lAir conditioner switch
lElectrical loadFuel injection & mixture ratio control Fuel injectors
Electronic ignition system Power transistors
Fuel pump control Fuel pump relay
On board diagnostic system MI (On the instrument panel)
Heated oxygen sensor 1 heater control Heated oxygen sensor 1 heater
Heated oxygen sensor 2 heater control Heated oxygen sensor 2 heater
EVAP canister purge flow controlEVAP canister purge volume control
solenoid valve
Air conditioning cut control Air conditioner relay
Cooling fan control Cooling fan relays
Sensor Input Signal to ECMECM
functionActuator
Crankshaft position sensor (POS)
Engine speed
Piston position
Fuel injec-
tion & mix-
ture ratio
controlFuel injectors Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Heated oxygen sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch Gear position
Ignition switch Start signal
Knock sensor Engine knocking condition
Battery Battery voltage
Power steering pressure sensor Power steering operation
Heated oxygen sensor 2 *1 Density of oxygen in exhaust gas
ESP/TCS/ABS control unit *2 ESP/TCS operation command
Wheel sensor Vehicle speed
Air conditioner switch Air conditioner operation

ENGINE CONTROL SYSTEM
EC-393
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EC
lWhen the accelerator pedal is fully depressed.
lWhen cranking the engine.
lAt high engine speeds.
lWhen the engine coolant temperature becomes excessively high.
lWhen operating power steering during low engine speed or low vehicle speed.
lWhen engine speed is excessively low.
lWhen refrigerant pressure is excessively low or high.
Fuel Cut Control (at No Load and High Engine Speed)EBS00BEX
INPUT/OUTPUT SIGNAL CHART
SYSTEM DESCRIPTION
If the engine speed is above 1,800 rpm with no load (for example, in neutral and engine speed over 1,800
rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies based on engine speed.
Fuel cut will operate until the engine speed reaches 1,500 rpm, then fuel cut is cancelled.
NOTE:
This function is different from deceleration control listed under “Multiport Fuel Injection (MFI) System”,EC-389
.
CAN communicationEBS00BEY
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
FOR A/T MODELS
System Diagram
Input/Output Signal Chart
T: Transmit R: Receive Sensor Input Signal to ECMECM
functionActuator
Park/neutral position (PNP) switch Neutral position
Fuel cut
controlFuel injectors Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Engine coolant temperature sensor Engine coolant temperature
Crankshaft position sensor (POS) Engine speed
Wheel sensor Vehicle speed
SKIA0884E
Signals ECM TCM
Engine speed signal T R
Engine coolant temperature signal T R

BASIC SERVICE PROCEDURE
EC-397
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PREPARATION
Before performing “Idle Air Volume Learning”, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.
lBattery voltage: More than 12.9V (At idle)
lEngine coolant temperature: 70 - 100°C (158 - 212°F)
lPNP switch: ON
lElectric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, set lighting switch to the 1st position to light
only small lamps.
lSteering wheel: Neutral (Straight-ahead position)
lVehicle speed: Stopped
lTransmission: Warmed-up
For A/T models with CONSULT-II, drive vehicle until “FLUID TEMP SE” in “DATA MONITOR” mode of “A/
T” system indicates less than 0.9V.
For A/T models without CONSULT-II and M/T models, drive vehicle for 10 minutes.
OPERATION PROCEDURE
With CONSULT-II
1. PerformEC-396, "Accelerator Pedal Released Position Learning".
2. PerformEC-396, "
Throttle Valve Closed Position Learning".
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic “PRE-CONDITIONING” (previously mentioned) are in good
order.
5. Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.
6. Touch “START” and wait 20 seconds.
SEF452Y
SEF454Y

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-449
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TROUBLE DIAGNOSIS - SPECIFICATION VALUEPFP:00031
DescriptionEBS00BFM
The specification (SP) value indicates the tolerance of the value that is displayed in “DATA MONITOR (SPEC)”
mode of CONSULT-II during normal operation of the Engine Control System. When the value in “DATA MONI-
TOR (SPEC)” mode is within the SP value, the Engine Control System is confirmed OK. When the value in
“DATA MONITOR (SPEC)” mode is NOT within the SP value, the Engine Control System may have one or
more malfunctions.
The SP value is used to detect malfunctions that may affect the Engine Control System, but will not light the
MIL.
The SP value will be displayed for the following three items:
lB/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board cor-
rection)
lA/F ALPHA-B1 (The mean value of air-fuel ratio feedback correction factor per cycle)
lMAS A/F SE-B1 (The signal voltage of the mass air flow sensor)
Testing ConditionEBS00BFN
lVehicle driven distance: More than 5,000 km (3,017 miles)
lBarometric pressure: 98.3 - 104.3 kPa (0.983 - 1.043 bar, 1.003 - 1.064 kg/cm2, 14.25 - 15.12 psi)
lAtmospheric temperature: 20 - 30°C(68-86°F)
lEngine coolant temperature: 75 - 95°C (167 - 203°F)
lTransmission: Warmed-up*1
lElectrical load: Not applied*2
lEngine speed: Idle
*1: For A/T models with CONSULT-II, after the engine is warmed up to normal operating temperature, drive
vehicle until “FLUID TEMP SE” (A/T fluid temperature sensor signal) indicates more than 60°C (140°F).
For A/T models without CONSUT-II and M/T models, after the engine is warmed up to normal operating tem-
perature, drive vehicle for 5 minutes.
*2: Rear window defogger switch, air conditioner switch, lighting switch are “OFF”. Steering wheel is straight
ahead.
Inspection ProcedureEBS00BFO
NOTE:
Perform “DATA MONITOR (SPEC)” mode in maximum scale display.
1. PerformEC-412, "
Basic Inspection".
2. Confirm that the testing conditions indicated above are met.
3. Select “B/FUEL SCHDL”, “A/F ALPHA-B1” and “MAS A/F SE-
B1” in “DATA MONITOR (SPEC)” mode with CONSULT-II.
4. Make sure that monitor items are within the SP value.
5. If NG, go toEC-450, "
Diagnostic Procedure".
SEF601Z

EC-460
[QR (WITHOUT EURO-OBD)]
DTC U1000 CAN COMMUNICATION LINE
DTC U1000 CAN COMMUNICATION LINE
PFP:23710
DescriptionEBS00BFW
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
On Board Diagnosis LogicEBS00BFX
DTC Confirmation ProcedureEBS00BFY
1. Turn ignition switch “ON” and wait at least 3 seconds.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. If 1st trip DTC is detected, go toEC-462, "
Diagnostic Procedure".
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
U1000
1000CAN communication
line
lECM can not communicate to other control
unit.
lECM can not communicate for more than the
specified time.
lHarness or connectors
(CAN communication line is open or
shorted)

OIL PAN AND OIL STRAINER
EM-25
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6. Remove drive belts.
7. Remove A/C compressor with piping connected.
And locate it aside temporarily with ropes or equivalent not to
disturb the following work.
8. Remove front exhaust tube and its support.
9. Set a suitable transmission jack under transaxle and hoist
engine with engine slinger.
10. Remove center member.
11. Remove rear plate cover, and four engine-to transaxle bolts.
12. Loosen bolts in reverse order of illustration to remove upper oil
pan.
lDisregard No. 1, 2 and 3 when loosening.
lInsert Tool (Seal cutter) between upper oil pan and cylinder
block. Slide tool by tapping on the side of the tool with a ham-
mer.
13. Remove oil strainer.
INSPECTION AFTER REMOVAL
lClean oil strainer if any object attached.
INSTALLATION
1. Install oil strainer.
2. Install upper oil pan in the order below.
a. Apply liquid gasket thoroughly as in illustration.
lUse Genuine Liquid Gasket or equivalent.
b. Install O-rings as front cover side.
PBIC0257E
KBIA0097E
SEM365EA
KBIA0100E

EM-26
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OIL PAN AND OIL STRAINER
c. Tighten bolts in numerical order as shown.
lNo.10, 11and 18 indicate double tightening of bolts 1,2 and 3.
NOTE:
Refer to the below for locating bolts.
M6´20 mm (0.79 in) : No. 19, 20
M8´25 mm (0.98 in) : No. 1, 3, 4, 9
M8x45mm(1.77in):No.2,5,6,7,8,17
M8 x100mm (3.97 in) : No. 12, 13, 14, 15,16
d. Tighten transmission joint bolts.
e. Install rear plate cover.
3. Install lower oil pan.
lUse Genuine Liquid gasket or equivalent.
lTighten bolts in numerical order as shown.
4. Install oil pan drain plug.
lRefer to illustration of components of former page for installation direction of washer.
5. Install in the reverse order of removal after this step.
lPour engine oil or start engine at least 30 minutes after oil pan is installed.
INSPECTION AFTER INSTALLATION
lCheck for leakage of engine oil when engine is warmed.
KBIA0097E
KBIA0098E
KBIA0096E

ENGINE ASSEMBLY
EM-61
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ENGINE ASSEMBLYPFP:10001
Removal and InstallationEBS009R7
WA RN ING:
lSituate vehicle on a flat and solid surface.
lPlace chocks at front and back of rear wheels.
lFor engines not equipped with engine slingers, attach proper slingers and bolts described in
PA R T S C ATA L O G.
CAUTION:
lAlways be careful to work safely, avoid forceful or uninstructed operations.
lDo not start working until exhaust system and coolant are cool enough.
lIf items or work required are not covered by the engine main body section, refer to the applicable
sections.
lAlways use the support point specified for lifting.
lUseeither2-polelifttypeorseparatetypeliftasbestyoucan.Ifboard-ontypeisusedfor
unavoidable reasons, support at the rear axle jacking point with transmission jack or similar tool
before starting work, in preparation for the backward shift of center of gravity.
lFor supporting points for lifting and jacking point at rear axle, refer toGI-37, "Garage Jack and
Safety Stand".
REMOVAL
Description of work
Remove engine, transaxle and transfer assembly with front suspension member from vehicle down ward.
Separate suspension member, and then separate engine and transaxle.
Preparation
KBIA0254E
1 Rear engine mounting insulator 2 Rear engine mounting bracket 3 RH engine mounting insulator
4 RH engine mounting bracket 5 Front engine mounting bracket 6 Front engine mounting insulator
7 Center member 8 LH engine mounting insulator 9 LH engine mounting bracket