Page 1785 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
EC-1435
[YD]
C
D
E
F
G
H
I
J
K
L
MA
EC
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically. INT/A VOLUME [mg/]
●The i NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
EC-1435
[YD]
C
D
E
F
G
H
I
J
K
L
MA
EC
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically. INT/A VOLUME [mg/]
●The i](/manual-img/5/57405/w960_57405-1784.png)
TROUBLE DIAGNOSIS
EC-1435
[YD]
C
D
E
F
G
H
I
J
K
L
MA
EC
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically. INT/A VOLUME [mg/]
●The intake air volume computed
from the mass air flow sensor
signal is displayed.
BARO SEN [kPa]××
●The 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]
●The cylinder being injected is
displayed.
0 ... Cylinder No.1 is injected.
1 ... Cylinder No.3 is injected.
2 ... Cylinder No.4 is injected.
3 ... Cylinder No.2 is injected.
Voltage [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-LOW
CAN COMM
[OK/NG]×
●Indicates the communication
condition of CAN communica-
tion line.●These items are not displayed
in “SELECTION FROM MENU”
mode. CAN CIRC 1
[OK/UNKWN]×
CAN CIRC 2
[OK/UNKWN]×
CAN CIRC 3
[OK/UNKWN]×
CAN CIRC 4
[OK/UNKWN]×
CAN CIRC 5
[OK/UNKWN]×
CAN CIRC 6
[OK/UNKWN]×
CAN CIRC 7
[OK/UNKWN]× MONITOR ITEMECM
INPUT
SIG-
NALMAIN
SIG-
NALSCAN
DIAG
SUP-
PORT
MNTRCONDITION SPECIFICATION
Page 1786 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual EC-1436
[YD]
TROUBLE DIAGNOSIS
ACTIVE TEST MODE
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”
m NISSAN X-TRAIL 2001 Service Repair Manual EC-1436
[YD]
TROUBLE DIAGNOSIS
ACTIVE TEST MODE
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”
m](/manual-img/5/57405/w960_57405-1785.png)
EC-1436
[YD]
TROUBLE DIAGNOSIS
ACTIVE TEST MODE
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.
TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
POWER BAL-
ANCE
●Engine: After warming up, idle the
engine.
●A/C switch “OFF”
●Shift lever “N”
●Cut off each injector signal one at
a time using CONSULT-IIEngine runs rough or dies.
●Harness and connectors
●Compression
●Fuel injectors
COOLING FAN
●Ignition switch: ON
●Operate the cooling fan at “LOW”,
“HI” speed and turn “OFF” using
CONSULT-II.Cooling fan moves at “LOW”, “HI”
speed and stops.●Harness and connector
●Cooling fan motor
●Cooling fan relay
OFF ACCEL PO
SIG
●This mode is used for ECM to learn accelerator pedal released positions.
GLOW RELAY
●Ignition switch: ON (Engine
stopped)
●Turn the glow relay “ON” and
“OFF” using CONSULT-II and lis-
ten to operating sound.Glow relay makes the operating
sound.●Harness and connector
●Glow relay
EGR VOL CONT/
V
●Ignition switch: ON
●Change EGR volume control
valve opening step using CON-
SULT-II.EGR volume control valve makes
an operating sound.●Harness and connector
●EGR volume control valve
PRES REGULA-
TOR
●Ignition switch: ON
●Change fuel pressure in common
rail using CONSULT-IIFuel leaks.●Fuel line
●Fuel pressure relief valve
PBIB0480E
SEF707X
Page 1787 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
EC-1437
[YD]
C
D
E
F
G
H
I
J
K
L
MA
EC
–While narrowing down the possible causes, CONSULT-II should be set in “DATA MONITOR (AUTO
TRIG)” mode, especially in case th NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
EC-1437
[YD]
C
D
E
F
G
H
I
J
K
L
MA
EC
–While narrowing down the possible causes, CONSULT-II should be set in “DATA MONITOR (AUTO
TRIG)” mode, especially in case th](/manual-img/5/57405/w960_57405-1786.png)
TROUBLE DIAGNOSIS
EC-1437
[YD]
C
D
E
F
G
H
I
J
K
L
MA
EC
–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 to GI-23, "
How to Perform Efficient Diagnosis for an Electrical Incident" , “INCIDENT SIMU-
LATION TESTS”.
2. “MANU TRIG”
–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:
● Specification data are reference values.
● Specification 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)
●Tachometer: Connect
●Run engine and compare CONSULT-II value with the tachometer
indicationAlmost the same speed as the
tachometer indication
COOLAN TEMP/S
●Engine: After warming up More than 70°C (158°F)
VHCL SPEED SE
●Turn drive wheels and compare CONSULT-II value with the speed-
ometer indicationAlmost the same speed as the
speedometer indication
FUEL TEMP SEN
●Engine: After warming up More than 40°C (104°F)
ACCEL POS SEN*
●Ignition switch: ON
(Engine stopped)Accelerator pedal: fully released 0.8 - 1.3V
Accelerator pedal: fully depressed More than 3.5V
Page 1788 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual EC-1438
[YD]
TROUBLE DIAGNOSIS
ACCEL SEN 2*●Ignition switch: ON
(Engine stopped)Accelerator pedal: fully released 0.3 - 1.8V
Accelerator pedal: fully depressed More than 3.0V
OFF ACCEL SW
●Ignitio NISSAN X-TRAIL 2001 Service Repair Manual EC-1438
[YD]
TROUBLE DIAGNOSIS
ACCEL SEN 2*●Ignition switch: ON
(Engine stopped)Accelerator pedal: fully released 0.3 - 1.8V
Accelerator pedal: fully depressed More than 3.0V
OFF ACCEL SW
●Ignitio](/manual-img/5/57405/w960_57405-1787.png)
EC-1438
[YD]
TROUBLE DIAGNOSIS
ACCEL SEN 2*●Ignition switch: ON
(Engine stopped)Accelerator pedal: fully released 0.3 - 1.8V
Accelerator pedal: fully depressed More than 3.0V
OFF ACCEL SW
●Ignition switch: ON
(Engine stopped)Accelerator pedal: fully released ON
Accelerator pedal: slightly
depressed OFF
MAS AIR/FL SE
●Engine: After warming up
●Air conditioner switch: OFF
●Shift lever: Neutral position
●No-loadIdle 1.0 - 2.5V
2,000 rpm 2.1 - 2.7V
BATTERY VOLT
●Ignition switch: ON (Engine stopped) 11 - 14V
P/N POSI SW
●Ignition switch: ONShift lever: Neutral position ON
Except above OFF
START SIGNAL
●Ignition switch: ON → START → ON OFF → ON → OFF
PW/ST SIGNAL
●Engine: After warming up, idle
the engineSteering wheel is in neutral posi-
tion. (Forward direction)OFF
Steering wheel is turned. ON
BRAKE SW
●Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
IGN SW
●Ignition switch: ON → OFF ON → OFF
ACT CR PRESS
●Engine: After warming up
●Air conditioner switch: OFF
●Shift lever: Neutral position
●No-loadIdle 30 - 40 MPa
2,000 rpm 40 - 50 MPa
SUCTION CV
●Engine: After warming up
●Air conditioner switch: OFF
●Shift lever: Neutral position
●No-loadIdle 70.0 - 71.5°CA
2,000 rpm 73.5 - 75.0°CA
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
GLOW RLY Refer to EC-1544, "
GLOW CONTROL SYSTEM" .
COOLING FAN
●When cooling fan is stopped. OFF
●When cooling fans operate at low speed. LOW
●When cooling fans operate at high speed. HIGH
EGR VOL CON/V
●Engine: After warming up
●Air conditioner switch: OFF
●Shift lever: Neutral position
●No-loadAfter one minute at idle More than 10 steps
Revving engine from idle to 3,600
rpm0 step
INT/A VOLUME
●Engine: After warming up, idle the engine 150 - 450 mg/st MONITOR ITEM CONDITION SPECIFICATION
Page 1789 of 3833
TROUBLE DIAGNOSIS
EC-1439
[YD]
C
D
E
F
G
H
I
J
K
L
MA
EC
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
*: Accelerator pedal position sensor 2 signal is converted by ECM internally. Thus, it differ from ECM terminals voltage. BARO SEN
●Ignition switch: ONAltitude
Approx. 0m: Approx. 100.62 kPa
(1.0062 bar, 1.026 kg/cm
2 , 14 .5 9
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 ,
11.36 psi)
CYL COUNT
●Engine is running 0 → 1 → 2 → 3 MONITOR ITEM CONDITION SPECIFICATION
Page 1790 of 3833
EC-1440
[YD]
TROUBLE DIAGNOSIS
Major Sensor Reference Graph in Data Monitor Mode
EBS0037J
The following are the major sensor reference graphs in “DATA MONITOR” mode.
ACCEL POS SEN, “CKPS·RPM (TDC)”, “MAS AIR/FL SE”
Below is the data for “ACCEL POS SEN”, “CKPS·RPM (TDC)” and “MAS AIR/FL SE” when revving engine
quickly up to 3,000 rpm under no load after warming up engine to the normal operating temperature.
Each value is for reference, the exact value may vary.
SEF321Y
Page 1791 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT
EC-1441
[YD]
C
D
E
F
G
H
I
J
K
L
MA
EC
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTPFP:00006
DescriptionEBS00321
Intermittent incidents (I/I) may occur. NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT
EC-1441
[YD]
C
D
E
F
G
H
I
J
K
L
MA
EC
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTPFP:00006
DescriptionEBS00321
Intermittent incidents (I/I) may occur.](/manual-img/5/57405/w960_57405-1790.png)
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT
EC-1441
[YD]
C
D
E
F
G
H
I
J
K
L
MA
EC
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTPFP:00006
DescriptionEBS00321
Intermittent incidents (I/I) may occur. In many cases, the incident resolves itself (the part or circuit function
returns to normal without intervention). It is important to realize that the symptoms described in the customer's
complaint often do not recur on DTC visits. Realize also that the most frequent cause of I/I occurrences is poor
electrical connections. Because of this, the conditions under which the incident occurred may not be clear.
Therefore, circuit checks made as part of the standard diagnostic procedure may not indicate the specific mal-
functioning area.
COMMON I/I REPORT SITUATIONS
Diagnostic ProcedureEBS00322
1.INSPECTION START
Erase DTCs. Refer to EC-1406, "
HOW TO ERASE DTC" .
>> GO TO 2.
2.CHECK GROUND TERMINALS
Check ground terminals for corroding or loose connection.
Refer to GI-23, "
How to Perform Efficient Diagnosis for an Electrical Incident" , “CIRCUIT INSPECTION”,
“Ground Inspection”.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace.
3.SEARCH FOR ELECTRICAL INCIDENT
Perform GI-23, "
How to Perform Efficient Diagnosis for an Electrical Incident" , “INCIDENT SIMULATION
TESTS”.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace.
STEP in Work Flow Situation
II The CONSULT-II is used. The SELF-DIAG RESULTS screen shows time data other than “0”.
III The symptom described by the customer does not recur.
IV DTC does not appear during the DTC Confirmation Procedure.
VI The Diagnostic Procedure for XXXX does not indicate the malfunctioning area.
Page 1792 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual EC-1442
[YD]
POWER SUPPLY CIRCUIT FOR ECM
POWER SUPPLY CIRCUIT FOR ECM
PFP:24110
ECM Terminals and Reference ValueEBS00369
Remarks: Specification data are reference values and are measured between eac NISSAN X-TRAIL 2001 Service Repair Manual EC-1442
[YD]
POWER SUPPLY CIRCUIT FOR ECM
POWER SUPPLY CIRCUIT FOR ECM
PFP:24110
ECM Terminals and Reference ValueEBS00369
Remarks: Specification data are reference values and are measured between eac](/manual-img/5/57405/w960_57405-1791.png)
EC-1442
[YD]
POWER SUPPLY CIRCUIT FOR ECM
POWER SUPPLY CIRCUIT FOR ECM
PFP:24110
ECM Terminals and Reference ValueEBS00369
Remarks: Specification data are reference values and are measured between each terminal and ground.
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.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
A5
A6
A7B
B
BECM ground[Engine is running]
●Idle speedApproximately 0V
A8
A9R
RPower supply for ECM[Ignition switch "ON"]BATTERY VOLTAGE
(11 - 14V)
A31 W/L Power supply for ECM[Ignition switch “ON”]BATTERY VOLTAGE
(11 - 14V)
D18
D19W/R
W/RIgnition switch [Ignition switch “ON”]BATTERY VOLTAGE
(11 - 14V)
D24
D26G
GECM relay (self-shutoff)[Ignition switch “ON”]
[Ignition switch “OFF”]
●For a few seconds after turning ignition
switch "OFF"Approximately 0V
[Ignition switch “OFF”]
●A few seconds passed after turning ignition
switch "OFF"BATTERY VOLTAGE
(11 - 14V)