2003 NISSAN X-TRAIL display

PRECAUTIONS
EC-657
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lBefore replacing ECM, perform Terminals and Reference
Value inspection and make sure ECM functions properly.
Refer toEC-685
.
lAfter performing each TROUBLE DIAGNOSIS, perform
“DTC Confirmation Procedure” or “Overall Function
Check”.
The DTC should not be displayed in the “ DTC Confirmation
Procedure” if the repair is completed. The “Overall Func-
tion Check” should be a good result if the repair is com-
pleted.
lWhen measuring ECM signals with a circuit tester, never
allow the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.
lDo not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the ECM's
transistor. Use a ground other than ECM terminals, such as
the ground.
lDo not depress accelerator pedal when staring.
lImmediately after staring, do not rev up engine unnecessar-
ily.
lDo not rev up engine just prior to shutdown.
MEF040D
SEF348N
SEF709Y

BASIC SERVICE PROCEDURE
EC-665
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EC
4. Touch "CLEAR" and wait a few seconds.
5. Make sure that "CMPLT" is displayed on CONSULT-II screen.
Fuel Pressure Relief ValveEBS009PB
DESCRIPTION
When the fuel pressure in common rail increases to excessively high, fuel pressure relief valve opens to carry
excess fuel to the return hose.
FUEL PRESSURE RELIEF VALVE CHECK
WA RN ING:
Confirm that the engine is cooled down and there are no fire hazards near the vehicle.
1. Turn ignition switch "OFF".
2. Remove fuel hose from fuel pressure relief valve.
3. Attach a blind cap or plug to removed hose.
4. Turn ignition switch "ON".
5. Select "PRES REGULATOR" in "ACTIVE TEST MODE" with
CONSULT-II.
6. Start engine and keep engine speed 2,000 rpm.
7. Raise fuel pressure to 135 MPa with touching "UP" or "Qu" on
the CONSULT-II screen.
8. Confirm that the fuel does not come out from the fuel pressure
relief valve.
WAR NIN G:
If the fuel comes out, stop the engine immediately.
9. If NG, replace common rail.
PBIB0412E
PBIB0413E
PBIB0467E
PBIB0587E

EC-666
[YD]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNOSTIC (OBD) SYSTEM
PFP:00028
DTC and MI Detection LogicEBS0037C
When a malfunction is detected, the malfunction (DTC) is stored in the ECM memory.
The MI will light up each time the ECM detects malfunction. For diagnostic items causing the MI to light up,
refer toEC-654, "
INDEX FOR DTC".
Diagnostic Trouble Code (DTC)EBS0037D
HOW TO READ DTC
The DTC can be read by CONSULT-II only.
With CONSULT-II
CONSULT-II displays the DTC in "SELF-DIAG RESULTS" mode. Example: P0115, P0335, P1233, etc. These
DTCs are prescribed by ISO15031-6.
(CONSULT-II also displays the malfunctioning component or system.)
HOW TO ERASE DTC
How to Erase DTC ( With CONSULT-II)
1. If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait at least
5 seconds and then turn it “ON” (engine stopped) again.
2. Touch “ENGINE”.
3. Touch “SELF-DIAG RESULTS”.
4. Touch “ERASE”. (The DTC in the ECM will be erased.)
The emission related diagnostic information in the ECM can be erased by selecting “ERASE” in the “SELF-
DIAG RESULTS” mode with CONSULT-II.
NATS (Nissan Anti-theft System)EBS008YE
lIf the security indicator lights up with the ignition switch in
the "ON" position or "NATS MALFUNCTION" is displayed
on "SELF-DIAG RESULTS" screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card.
Refer to NATS (Nissan Anti-Theft System) in BL section.
lConfirm no self-diagnostic results of NATS is displayed
before touching "ERASE" in "SELF-DAIG RESULTS" mode
with CONSULT-II.
lWhen replacing ECM, initialization of NATS system and reg-
istration of all NATS ignition key IDs must be carried out
with CONSULT-II using NATS program card.
PBIB0476E
SEF543X

EC-668
[YD]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Relationship Between MI, DTC, CONSULT-II and Driving Patterns
*1: When a malfunction is detected, MI
will light up.*2: MI will not light up after ignition switch
is turned OFF.*3: When a malfunction is detected for
the first time, the DTC will be stored in
ECM.
*4: The DTC will not be displayed any
longer after vehicle is driven 40 times
without the same malfunction. (The
DTC still remain in ECM.)*5: Other screens except SELF-DIAG-
NOSTIC RESULTS & DATA MONI-
TOR (AUTO TRIG) cannot display the
malfunction. DATA MONITOR (AUTO
TRIG) can display the malfunction at
the moment it is detected.
PBIB0589E

TROUBLE DIAGNOSIS
EC-671
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Description for Work Flow
DIAGNOSTIC WORK SHEET
There are many operating conditions that lead to the malfunction of
engine components. A good grasp of such conditions can make trou-
bleshooting faster and more accurate.
In general, each customer feels differently about a problem. It is
important to fully understand the symptoms or conditions for a cus-
tomer complaint.
Utilize a diagnostic worksheet like the one shown below in order to
organize all the information for troubleshooting.
STEP DESCRIPTION
STEP IGet detailed information about the conditions and the environment when the incident/symptom occurred using the
EC-671, "
DIAGNOSTIC WORK SHEET".
STEP IIBefore confirming the concern, check and write down (print out using CONSULT-II) the DTC, then erase the DTC.
Refer toEC-666
.
If the incident cannot be verified, performEC-699, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
Study the relationship between the cause, specified by DTC, and the symptom described by the customer. (The
“Symptom Matrix Chart” will be useful. Refer toEC-676
.) Also check related service bulletins for information.
STEP IIITry to confirm the symptom and under what conditions the incident occurs.
The “DIAGNOSTIC WORK SHEET” is useful to verify the incident. Connect CONSULT-II to the vehicle in DATA
MONITOR (AUTO TRIG) mode and check real time diagnosis results.
If the incident cannot be verified, performEC-699, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
If the malfunction code is detected, skip STEP IV and perform STEP V.
STEP IVTry to detect the DTC by driving in (or performing) the “DTC Confirmation Procedure”. Check and read the DTC by
using CONSULT-II.
During the DTC verification, be sure to connect CONSULT-II to the vehicle in DATA MONITOR (AUTO TRIG) mode
and check real time diagnosis results.
If the incident cannot be verified, performEC-699, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
In case the “DTC Confirmation Procedure” is not available, perform the “Overall Function Check” instead. The DTC
cannot be displayed by this check, however, this simplified “check” is an effective alternative.
The “NG” result of the “Overall Function Check” is the same as the DTC detection.
STEP VTake the appropriate action based on the results of STEP I through IV.
If the malfunction code is indicated, proceed to Trouble Diagnosis for DTC PXXXX.
If the normal code is indicated, proceed to the Basic Inspection,EC-672
. Then perform inspections according to the
Symptom Matrix Chart. Refer toEC-676
.
STEP VIIdentify where to begin diagnosis based on the relationship study between symptom and possible causes. Inspect the
system for mechanical binding, loose connectors or wiring damage using (tracing) “Harness Layouts”.
Gently shake the related connectors, components or wiring harness with CONSULT-II set in “DATA MONITOR (AUTO
TRIG)” mode.
Check the voltage of the related ECM terminals or monitor the output data from the related sensors with CONSULT-II.
Refer toEC-685
orEC-696.
The “Diagnostic Procedure” in EC section contains a description based on open circuit inspection. A short circuit
inspection is also required for the circuit check in the Diagnostic Procedure. For details, refer toGI-24, "
How to Per-
form Efficient Diagnosis for an Electrical Incident", “Circuit Inspection”.
Repair or replace the malfunction parts.
If the malfunctioning part cannot be detected, performEC-699, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT".
STEP VIIOnce you have repaired the circuit or replaced a component, you need to run the engine in the same conditions and
circumstances which resulted in the customer's initial complaint.
Perform the “DTC Confirmation Procedure” and confirm the normal code (DTC P0000) is detected. If the incident is
still detected in the final check, perform STEP VI by using a different method from the previous one.
Before returning the vehicle to the customer, be sure to erase the unnecessary (already fixed) DTC in ECM. (Refer to
EC-666
.)
SEF907L

TROUBLE DIAGNOSIS
EC-693
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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
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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