2001 NISSAN X-TRAIL oil

EC-1402
[YD]
ENGINE CONTROL SYSTEM
Crankcase Ventilation System
EBS0036K
DESCRIPTION
In this system, blow-by gas is sucked into the air duct after oil separation by oil separator in the rocker cover.
INSPECTION
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.
CAN CommunicationEBS00NBH
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.
PBIB0590E
SEC692

EC-1418
[YD]
TROUBLE DIAGNOSIS
SYSTEM — Basic engine control systemSYMPTOM
Reference page
ROUGH IDLE/HUNTING IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEAT/HIGH ENGINE COOLANT TEMPERATURE EXCESSIVE FUEL CONSUMPTION EXCESSIVE OIL CONSUMPTION ABNORMAL SMOKE COLOR
DEAD BATTERY (UNDER CHARGE) Malfunction indicator illuminates. Can be detected by CONSULT-II?
BLACK SMOKE WHITE SMOKE
Warranty symptom code AG AH AJ AK AL AM AP HA
Fuel supply pump 5 5 5 5 1 1 —
Fuel injector 3 3 3 4 4 4 1 1EC-1472
EDU (Electronic drive unit) 4 4 4 5 5 5 1 1EC-1501
Glow system1EC-1544
Engine body 3 3 3 3 1 3EM-110
EGR system3EC-1551
Air cleaner and duct3MA-32
Fuel pressure relief valveEC-1405
ENGINE CONTROL
Suction control valve circuit 4 4 4 4 1 1EC-1519
Fuel injector circuit 1 1 1 1 1 1 1 1EC-1472
EDU circuit 2 2 2 2 2 2 1 1EC-1501
Mass air flow sensor circuit 1 1 1EC-1451
Engine coolant temperature circuit 1 1 1 1 1EC-1456
Vehicle speed sensor circuit11EC-1489
Accelerator pedal position sensor circuit 1 1 1EC-1460
Accelerator pedal released position switch
circuit11EC-1531
Common rail fuel pressure sensor
circuit11EC-1468
Crankshaft position sensor (TDC)
circuit11 11EC-1479

TROUBLE DIAGNOSIS
EC-1419
[YD]
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EC
1 - 5: The numbers refer to the order of inspection.
(continued on next page)
ENGINE CONTROL
Camshaft position sensor circuitEC-1484
Start signal circuitEC-1566
Ignition switch circuitEC-1442
Power supply for ECM circuit11EC-1442
Cooling fan relay circuit 2EC-1508
EGR volume control valve circuit 1EC-1551
Glow relay circuit1EC-1544
ECM relay (Self-shutoff) circuit1EC-1538
ECM, connector circuit 2 2 2 2 2 2 2 2 2 2 2EC-1494,EC-
1536
Air conditioner relay circuitEC-1572
Air conditioner switch circuitEC-1572
NATS (Nissan Anti-theft System)1EC-1406
SYSTEM — Basic engine control systemSYMPTOM
Reference page
ROUGH IDLE/HUNTING IDLING VIBRATION
SLOW/NO RETURN TO IDLE OVERHEAT/HIGH ENGINE COOLANT TEMPERATURE EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION ABNORMAL SMOKE COLOR DEAD BATTERY (UNDER CHARGE) Malfunction indicator illuminates. Can be detected by CONSULT-II?
BLACK SMOKE WHITE SMOKE
Warranty symptom code AG AH AJ AK AL AM AP HA

TROUBLE DIAGNOSIS
EC-1431
[YD]
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EC
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
CONSULT-II FunctionEBS0037H
CONSULT-II INSPECTION PROCEDURE
1. Turn ignition switch OFF.
2. Connect CONSULT-II to data link connector, which is located
under the driver side dash panel.
3. Turn ignition switch ON.
E11 L CAN communication line[Ignition switch “ON”]Approximately 2.6 - 3.2V
Output voltage varies with the
communication status.
E12 P/BPower steering oil pres-
sure switch[Engine is running]
●Steering wheel is being turnedApproximately 0V
[Engine is running]
●Steering wheel is not being turnedBATTERY VOLTAGE
(11 - 14V)
E13 G/ORPark/Neutral position
switch[Ignition switch “ON”]
●Gear position is “Neutral” Approximately 0V
[Ignition switch “ON”]
●Except the above gear positionBATTERY VOLTAGE
(11 - 14V)
E16 G/W Suction control valve 2[Engine is running]
●Warm-up condition
●Idle speed0 - 12.5V
[Engine is running]
●Warm-up condition
●Engine speed is 2,000 rpm0 - 12.5V
E21 L/B Vehicle speed sensor[Engine is running]
●Lift up the vehicle
●In 2nd gear position
●Vehicle speed is 30 km/h (19 MPH)0 - 5V TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
PBIB0401E
PBIB0402E
PBIB0386E
PBIB0376E

TROUBLE DIAGNOSIS
EC-1433
[YD]
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EC
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
X: Applicable
SELF-DIAGNOSTIC MODE
Regarding items detected in “SELF-DIAG RESULTS” mode, refer to — EC-1393, "INDEX FOR DTC" .
DATA MONITOR MODE
ItemDIAGNOSTIC TEST MODE
SELF-DIAG
RESULTSDATA MONI-
TORACTIVE
TEST
ENGINE CONTROL COMPONENT PARTS
INPUTCrankshaft position sensor (TDC)××
Camshaft position sensor×
Engine coolant temperature sensor××
Vehicle speed sensor××
Fuel temperature sensor××
Accelerator pedal position sensor 1××
Accelerator pedal position sensor 2××
Accelerator pedal released position switch××
Common rail fuel pressure sensor××
Park/neutral position (PNP) switch×
Mass air flow sensor××
Battery voltage××
Power steering oil pressure switch×
Stop lamp switch×
Absolute pressure sensor××
Fuel injector adjustment resistor×
OUTPUTSuction control valve×××
Fuel injector×××
Glow relay××
Cooling fan relay×××
EGR volume control valve××
MONITOR ITEMECM
INPUT
SIG-
NALMAIN
SIG-
NALSCAN
DIAG
SUP-
PORT
MNTRCONDITION SPECIFICATION
CKPS·RPM (TDC) [rpm]××
●The engine speed computed
from the crankshaft position
sensor (TDC) signal is dis-
played.
COOLAN TEMP/S
[°C] or [°F]××
●The engine coolant tempera-
ture (determined by the signal
voltage of the engine coolant
temperature sensor) is dis-
played.When the engine coolant temper-
ature circuit is open or short, ECM
enters fail-safe mode. The engine
coolant temperature determined
by the ECM is displayed.
VHCL SPEED SE
[km/h] or [mph]××
●The vehicle speed computed
form the vehicle speed sensor
signal is displayed.
FUEL TEMP SEN [°C] or [°F]××
●The fuel temperature (deter-
mined by the signal voltage of
the fuel temperature sensor) is
displayed.

EC-1434
[YD]
TROUBLE DIAGNOSIS
ACCEL POS SEN [V]××
●The accelerator pedal position
sensor 1 signal voltage is dis-
played.
ACCEL SEN 2 [V]××
●The accelerator pedal position
sensor 2 signal voltage is dis-
played.
OFF ACCEL SW [ON/OFF]××
●indicates [ON/OFF] condition
from the accelerator pedal
released position switch signal.
ACT CR PRESS [MPa]××
●The common rail fuel pressure
(determined by the signal volt-
age of the common rail fuel
pressure sensor) is displayed.
BATTERY VOLT [V]××
●The power supply voltage of
ECM is displayed.
P/N POSI SW [ON/OFF]××
●Indicates [ON/OFF] condition
from the park/neutral position
switch signal.
START SIGNAL [ON/OFF]××
●indicates [ON/OFF] condition
from the starter signal.
PW/ST SIGNAL [ON/OFF]×
●indicates [ON/OFF] condition
from the power steering oil pres-
sure switch signal.
BRAKE SW [ON/OFF]××
●indicates [ON/OFF] condition
from the stop lamp switch sig-
nal.
IGN SW [ON/OFF]××
●Indicates [ON/OFF] condition
from ignition switch signal.
MAS AIR/FL SE [V]××
●The signal voltage of the mass
air flow sensor is displayed.
SUCTION CV [°CA]×
●Indicates [°CA] of suction con-
trol valve operating angle.
MAIN INJ WID [msec]×
●Indicates the actual fuel injec-
tion pulse width compensated
by ECM according to the input
signals.
GLOW RLY [ON/OFF]×
●The glow relay control condition
(determined by ECM according
to the input signal) is displayed.
COOLING FAN
[LOW/HI/OFF]×
●Indicates the control condition of
the cooling fans (determined by
ECM according to the input sig-
nal).
LOW ... Operates at low speed.
HI ... Operates at high speed.
OFF ... Stopped
EGR VOL CON/V [step]×
●Indicates the EGR volume con-
tro l value co mp ute d by the ECM
according to the input signals.
●The opening becomes larger as
the value increases. MONITOR ITEMECM
INPUT
SIG-
NALMAIN
SIG-
NALSCAN
DIAG
SUP-
PORT
MNTRCONDITION SPECIFICATION

EC-1472
[YD]
DTC P0201 - P0204 FUEL INJECTOR
DTC P0201 - P0204 FUEL INJECTOR
PFP:16600
DescriptionEBS008X0
The ECM sends the fuel injection signal to EDU (Electronic Drive Unit). Then the EDU sends ON signals to
fuel injectors to operate them.
The EDU monitors injector ground circuit and sends the feedback signal to the ECM.
COMPONENT DESCRIPTION
The fuel injector is a small, precise solenoid valve. When fuel injec-
tor receives ON signal from EDU, the coil in the fuel injector is ener-
gized. The energized coil pulls the needle valve back and allows fuel
to flow through the fuel injector into the cylinder. The amount of fuel
injected depends upon the injection pulse duration. Pulse duration is
the length of time the fuel injector remains open. The ECM controls
the injection pulse duration based on engine fuel needs.
CONSULT-II Reference Value in Data Monitor ModeEBS008X1
Remarks: Specification data are reference values.
ECM Terminals and Reference ValueEBS008X2
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
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.
PBIB0482E
PBIB0465E
MONITOR ITEM CONDITION SPECIFICATION
MAIN INJ WID
●Engine: After warming up
●Shift lever: Neutral position
●Idle speedNo-load 0.68 - 0.78 msec
Air conditioner switch: ON
Rear window defogger switch: ON0.78 - 0.88 msec

DTC P1217 OVERHEAT (COOLING SYSTEM)
EC-1509
[YD]
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EC
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant following the procedure in the MA-27,
"Changing Engine Coolant" . Also, replace the engine oil.
1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to
use coolant with the proper mixture ratio. Refer to MA-18, "
Engine Coolant Mixture Ratio" .
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
Overall Function CheckEBS004QV
Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be con-
firmed.
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-
sure fluid escaping from the radiator.
Wrap a thick cloth around the cap. Carefully remove the cap by turning it a quarter turn to allow built-
up pressure to escape. Then turn the cap all the way off.
WITH CONSULT-II
1. Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to EC-1511,
"Diagnostic Procedure" .
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to EC-1511,
"Diagnostic Procedure" .
3. Turn ignition switch “ON”.
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT-II and make sure that cooling fans operate when touching
“HIGH” or “LOW”.
If NG, go to EC-1511, "
Diagnostic Procedure" .
DTC Malfunction is detected when ... Check Items (Possible Cause)
P1217
●Cooling fan does not operate properly (Overheat).
●Cooling fan system does not operate properly
(Overheat).
●Engine coolant was not added to the system using
the proper filling method.
●Harness or connectors
(The cooling fan circuit is open or shorted.)
●Cooling fan
●Radiator hose
●Radiator
●Radiator cap
●Water pump
●Thermostat
●Engine coolant temperature sensor
For more information, refer to EC-1517, "
Main 12
Causes of Overheating" .
AEC640
SEF111X