2003 NISSAN X-TRAIL engine

EC-690
[YD]
TROUBLE DIAGNOSIS
D25 R/G Stop lamp switch[Ignition switch "ON"]lBrake pedal fully releasedApproximately 0V
[Ignition switch "ON"]
lBrake pedal depressedBATTERY VOLTAGE
(11 - 14V)
D27 B/Y Start signal[Ignition switch "ON"]Approximately 0V
[Ignition switch "START"]BATTERY VOLTAGE
(11 - 14V)
E1 LSuction control valve
power supply[Engine is running]
lWarm-up condition
lIdle speed0-12.5V
[Engine is running]
lWarm-up condition
lEngine speed is 2,000 rpm0-12.5V
E2 LG Cooling fan relay (Low)[Engine is running]
lCooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
lCooling fan is operatingApproximately 0.1V
E7 LG/B Cooling fan relay (High)[Engine is running]
lCooling fan is not operating
lCooling fan is operating at low speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
lCooling fan is operating at high speedApproximately 0.1V
E8 Y/G Suction control valve 1[Engine is running]
lWarm-up condition
lIdle speed0-12.5V
[Engine is running]
lWarm-up condition
lEngine speed is 2,000 rpm0-12.5V
E9 W/R Glow relay Refer toEC-796, "
GLOW CONTROL SYSTEM". TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
PBIB0399E
PBIB0400E
PBIB0401E
PBIB0402E

TROUBLE DIAGNOSIS
EC-691
[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.
E12 P/BPower steering oil pres-
sure switch[Engine is running]lSteering wheel is being turnedApproximately 0V
[Engine is running]
lSteering wheel is not being turnedBATTERY VOLTAGE
(11 - 14V)
E13 G/ORPark/Neutral position
switch[Ignition switch “ON”]
lGear position is "Neutral"Approximately 0V
[Ignition switch “ON”]
lExcept the above gear positionBATTERY VOLTAGE
(11 - 14V)
E16 G/W Suction control valve 2[Engine is running]
lWarm-up condition
lIdle speed0-12.5V
[Engine is running]
lWarm-up condition
lEngine speed is 2,000 rpm0-12.5V
E21 L/B Vehicle speed sensor[Engine is running]
lLift up the vehicle
lIn 2nd gear position
lVehicle speed is 30 km/h (19 MPH)0-5V TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
PBIB0401E
PBIB0402E
PBIB0386E
PBIB0376E

EC-692
[YD]
TROUBLE DIAGNOSIS
3. Turn ignition switch ON.
4. Touch “START”.
5. Touch “ENGINE”.
6. Perform each diagnostic test mode according to each service
procedure.
For further information, see the CONSULT-II Operation Manual.
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
X: Applicable
SEF995X
PBIB0410E
ItemDIAGNOSTIC TEST MODE
SELF-DIAG
RESULTSDATA MONI-
TO RACTIVE
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´´

TROUBLE DIAGNOSIS
EC-693
[YD]
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EC
SELF-DIAGNOSTIC MODE
Regarding items detected in “SELF-DIAG RESULTS” mode, refer to —EC-654, "INDEX FOR DTC".
DATA MONITOR MODE
MONITOR ITEMECM
input
signalMain
signalsCONDITION SPECIFICATION
CKPS ·RPM (TDC) [rpm]´´
lThe engine speed computed from
the crankshaft position sensor (TDC)
signal is displayed.
COOLAN TEMP/S
[°C] or [°F]´´
lThe engine coolant temperature
(determined by the signal voltage of
the engine coolant temperature sen-
sor) is displayed.When the engine coolant temperature
circuit is open or short, ECM enters fail-
safe mode. The engine coolant temper-
ature determined by the ECM is dis-
played.
VHCL SPEED SE
[km/h] or [mph]´´
lThe vehicle speed computed form
the vehicle speed sensor signal is
displayed.
FUEL TEMP SEN [°C] or [°F]´´
lThe fuel temperature (determined by
the signal voltage of the fuel temper-
ature sensor) is displayed.
ACCEL POS SEN [V]´´
lThe accelerator pedal position sen-
sor 1 signal voltage is displayed.
ACCEL SEN 2 [V]´´
lThe accelerator pedal position sen-
sor 2 signal voltage is displayed.
OFF ACCEL SW [ON/OFF]´´
lindicates [ON/OFF] condition from
the accelerator pedal released posi-
tion switch signal.
ACT CR PRESS [MPa]´´
lThe common rail fuel pressure
(determined by the signal voltage of
the common rail fuel pressure sen-
sor) is displayed.
BATTERY VOLT [V]´´
lThe power supply voltage of ECM is
displayed.
P/N POSI SW [ON/OFF]´´
lIndicates [ON/OFF] condition from
the park/neutral position switch sig-
nal.
START SIGNAL [ON/OFF]´´
lindicates [ON/OFF] condition from
the starter signal.
PW/ST SIGNAL [ON/OFF]´
lindicates [ON/OFF] condition from
the power steering oil pressure
switch signal.
BRAKE SW [ON/OFF]´´
lindicates [ON/OFF] condition from
thestoplampswitchsignal.
IGN SW [ON/OFF]´´
lIndicates [ON/OFF] condition from
ignition switch signal.
MAS AIR/FL SE [V]´´
lThe signal voltage of the mass air
flow sensor is displayed.
SUCTION CV [°CA]´
lIndicates [°CA] of suction control
valve operating angle.
MAIN INJ WID [msec]´
lIndicates the actual fuel injection
pulse width compensated by ECM
according to the input signals.
GLOW RLY [ON/OFF]´
lThe glow relay control condition
(determined by ECM according to
the input signal) is displayed.

EC-694
[YD]
TROUBLE DIAGNOSIS
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
ACTIVE TEST MODE
COOLING FAN
[LOW/HI/OFF]´
lIndicates the control condition of the
cooling fans (determined by ECM
according to the input signal).
LOW ... Operates at low speed.
HI ... Operates at high speed.
OFF ... Stopped
EGR VOL CON/V [step]´
lIndicates the EGR volume control
value computed by the ECM accord-
ing to the input signals.
lThe opening becomes larger as the
value increases.
INT/AVOLUME[mg/]
lThe intake air volume computed from
the mass air flow sensor signal is dis-
played.
BARO SEN [kPa]´´
lThe barometric pressure (deter-
mined by the signal voltage from the
absolute pressure sensor built into
the ECM) is displayed.
CYL COUNT [0/1/2/3]
lThe cylinder being injected is dis-
played.
0 ... Cylinder No.1 is injected.
1 ... Cylinder No.3 is injected.
2 ... Cylinder No.4 is injected.
3 ... Cylinder No.2 is injected.
Vo ltag e [V ]
Voltage, frequency, duty cycle or pulse
width measured by the probe.Only "#" is displayed if item is unable to
be measured.
Figures with "#"s are temporary ones.
They are the same figures as an actual
piece of data which was just previously
measured. [Hz] or [%] Frequency [msec], [Hz] or
[%]
DUTY-HI
DUTY-LOW
PLS WIDTH-HI
PLS WIDTH-LOWMONITOR ITEMECM
input
signalMain
signalsCONDITION SPECIFICATION
TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
POWER BAL-
ANCE
lEngine: After warming up, idle the
engine.
lA/C switch “OFF”
lShift lever “N”
lCut off each injector signal one at
a time using CONSULT-IIEngine runs rough or dies.
lHarness and connectors
lCompression
lFuel injectors
COOLING FAN
lIgnition switch: ON
lOperate the cooling fan at “LOW”,
“HI” speed and turn “OFF” using
CONSULT-II.Cooling fan moves at “LOW”, “HI”
speed and stops.
lHarness and connector
lCooling fan motor
lCooling fan relay
OFF ACCEL PO
SIG
lThis mode is used for ECM to learn accelerator pedal released positions.

TROUBLE DIAGNOSIS
EC-695
[YD]
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EC
REAL TIME DIAGNOSIS IN DATA MONITOR MODE
CONSULT-II has two kinds of triggers and they can be selected by touching “SETTING” in “DATA MONITOR”
mode.
1. “AUTO TRIG” (Automatic trigger):
–The malfunction will be identified on the CONSULT-II screen in
real time.
In other words, DTC will be displayed if the malfunction is
detected by ECM.
At the moment a malfunction is detected by ECM, “MONITOR”
in “DATA MONITOR” screen is changed to “Recording Data ...
xx%” as shown in the figure, and the data after the malfunction
detection is recorded. Then when the percentage reached
100%, “REAL-TIME DIAG” screen is displayed. If “STOP” is
touched on the screen during “ Recording Data ... xx%”, “REAL-
TIME DIAG” screen is also displayed.
The recording time after the malfunction detection and the recording speed can be changed by “TRIG-
GER POINT” and “Recording Speed”. Refer to CONSULT-II OPERATION MANUAL.
2. “MANU TRIG” (Manual trigger):
–DTC will not be displayed automatically on CONSULT-II screen
even though a malfunction is detected by ECM.
DATA MONITOR can be performed continuously even though a
malfunction is detected.
Use these triggers as follows:
1. “AUTO TRIG”
–While trying to detect the DTC by performing the “DTC Confir-
mation Procedure”, be sure to select to “DATA MONITOR
(AUTO TRIG)” mode. You can confirm the malfunction at the
moment it is detected.
–While narrowing down the possible causes, CONSULT-II should be set in “DATA MONITOR (AUTO
TRIG)” mode, especially in case the incident is intermittent.
When you are inspecting the circuit by gently shaking (or twisting) the suspicious connectors, components
and harness in the “DTC Confirmation Procedure”, the moment a malfunction is found the DTC will be dis-
played. Refer toGI-24, "
How to Perform Efficient Diagnosis for an Electrical Incident", “INCIDENT SIMU-
LATION TESTS”.
2. “MANU TRIG”
GLOW RELAY
lIgnition switch: ON (Engine
stopped)
lTurn the glow relay “ON” and
“OFF” using CONSULT-II and lis-
ten to operating sound.Glow relay makes the operating
sound.lHarness and connector
lGlow relay
EGR VOL CONT/
V
lIgnition switch: ON
lChange EGR volume control
valve opening step using CON-
SULT-II.EGR volume control valve makes
an operating sound.lHarness and connector
lEGR volume control valve
PRES REGULA-
TOR
lIgnition switch: ON
lChange fuel pressure in common
rail using CONSULT-IIFuel leaks.lFuel line
lFuel pressure relief valve TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
PBIB0480E
SEF707X

EC-696
[YD]
TROUBLE DIAGNOSIS
–If the malfunction is displayed as soon as “DATA MONITOR” is selected, reset CONSULT-II to “MANU
TRIG”. By selecting “MANU TRIG” you can monitor and store the data. The data can be utilized for further
diagnosis, such as a comparison with the value for the normal operating condition.
FUNCTION TEST
This mode is used to inform customers of their vehicle condition of periodic maintenance.
CONSULT-II Reference Value in Data Monitor ModeEBS0037I
Remarks:
lSpecification data are reference values.
lSpecification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
SEF720X
MONITOR ITEM CONDITION SPECIFICATION
CKPS-RPM (TDC)
lTachometer: Connect
lRun engine and compare tachometer indication with the CONSULT-
II valueAlmostthesamespeedasthe
CONSULT-II value
COOLAN TEMP/S
lEngine: After warming up More than 70°C (158°F)
VHCL SPEED SE
lTurn drive wheels and compare speedometer indication with the
CONSULT-II valueAlmostthesamespeedasthe
CONSUT-II value
FUEL TEMP SEN
lEngine: After warming up More than 40°C (104°F)
ACCEL POS SEN
lIgnition switch: ON
(Engine stopped)Accelerator pedal: fully released 0.8 - 1.3V
Accelerator pedal: fully depressed More than 3.5V
ACCEL SEN 2
lIgnition switch: ON
(Engine stopped)Accelerator pedal: fully released 0.3 - 1.8V
Accelerator pedal: fully depressed More than 3.0V
OFF ACCEL SW
lIgnition switch: ON
(Engine stopped)Accelerator pedal: fully released ON
Accelerator pedal: slightly
depressedOFF

TROUBLE DIAGNOSIS
EC-697
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MAS AIR/FL SE
lEngine: After warming up
lAir conditioner switch: OFF
lShift lever: Neutral position
lNo-loadIdle 1.0 - 2.5V
2,000 rpm 2.1 - 2.7V
BATTERY VOLT
lIgnition switch: ON (Engine stopped) 11 - 14V
P/N POSI SW
lIgnition switch: ONShift lever: Neutral position ON
Except above OFF
START SIGNAL
lIgnition switch: ON®START®ON OFF®ON®OFF
PW/ST SIGNAL
lEngine: After warming up, idle
the engineSteering wheel is in neutral posi-
tion. (Forward direction)OFF
Steering wheel is turned. ON
BRAKE SW
lIgnition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
IGN SW
lIgnition switch: ON®OFF ON®OFF
ACT CR PRESS
lEngine: After warming up
lAir conditioner switch: OFF
lShift lever: Neutral position
lNo-loadIdle 30 - 40 MPa
2,000 rpm 40 - 50 MPa
SUCTION CV
lEngine: After warming up
lAir conditioner switch: OFF
lShift lever: Neutral position
lNo-loadIdle 70.0 - 71.5°CA
2,000 rpm 73.5 - 75.0°CA
MAIN INJ WID
lEngine: After warming up
lShift lever: Neutral position
lIdle speedNo-load 0.68 - 0.78 msec
Air conditioner switch: ON
Rear window defogger switch: ON0.78 - 0.88 msec
GLOW RLY Refer toEC-796, "
GLOW CONTROL SYSTEM".
COOLING FAN
lWhen cooling fan is stopped. OFF
lWhen cooling fans operate at low speed. LOW
lWhen cooling fans operate at high speed. HIGH
EGR VOL CON/V
lEngine: After warming up
lAir conditioner switch: OFF
lShift lever: Neutral position
lNo-loadAfter one minute at idle More than 10 steps
Revvingenginefromidleto3,600
rpm0step
INT/A VOLUME
lEngine: After warming up, idle the engine 150 - 450 mg/st
BARO SEN
lIgnition switch: ONAltitude
Approx. 0m: Approx. 100.62 kPa
(1.0062 bar, 1.026 kg/cm
2,14.59
psi)
Approx. 1,000 m: Approx. 88.95
kPa (0.8895 bar, 0.907 kg/cm
2,
12.90 psi)
Approx. 1,500 m: Approx. 83.16
kPa (0.8316 bar, 0.848 kg/cm
2,
12.06 psi)
Approx. 2,000 m: Approx. 78.36
kPa (0.7836 bar, 0.799 kg/cm
2,
11 . 3 6 p s i )
CYL COUNT
lEngine is running 0®1®2®3 MONITOR ITEM CONDITION SPECIFICATION