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HO2S2 MNTR (B1)
[RICH/LEAN]×
●Display of heated oxygen sensor 2 sig-
nal:
RICH ... means the amount of oxygen
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HO2S2 MNTR (B1)
[RICH/LEAN]×
●Display of heated oxygen sensor 2 sig-
nal:
RICH ... means the amount of oxygen
after three w](/manual-img/5/57405/w960_57405-448.png)
TROUBLE DIAGNOSIS
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HO2S2 MNTR (B1)
[RICH/LEAN]×
●Display of heated oxygen sensor 2 sig-
nal:
RICH ... means the amount of oxygen
after three way catalyst is relatively
small.
LEAN ... means the amount of oxygen
after three way catalyst is relatively
large.
●When the engine is stopped, a
certain value is indicated.
VHCL SPEED SE
[km/h] or [mph]××
●The vehicle speed computed from the
vehicle speed signal is displayed.
BATTERY VOLT
[V]××
●The power supply voltage of ECM is dis-
played.
ACCEL SEN 1 [V]××
●The accelerator pedal position sensor
signal voltage is displayed.
ACCEL SEN 2 [V]×
THRTL SEN 1 [V]××
●The throttle position sensor signal volt-
age is displayed.
THRTL SEN 2 [V]×
INT/A TEMP SE
[°C] or [°F]××
●The intake air temperature (determined
by the signal voltage of the intake air
temperature sensor) is indicated.
START SIGNAL
[ON/OFF]××
●Indicates [ON/OFF] condition from the
starter signal.●After starting the engine, [OFF] is
displayed regardless of the starter
signal.
CLSD THL POS
[ON/OFF]××
●Indicates idle position [ON/OFF] com-
puted by ECM according to the acceler-
ator pedal position sensor signal.
AIR COND SIG
[ON/OFF]××
●Indicates [ON/OFF] condition of the air
conditioner switch as determined by the
air conditioner signal.
P/N POSI SW
[ON/OFF]××
●Indicates [ON/OFF] condition from the
park/neutral position (PNP) switch sig-
nal.
PW/ST SIGNAL
[ON/OFF]××
●[ON/OFF] condition of the power steer-
ing system (determined by the signal
voltage of the power steering pressure
sensor signal) is indicated.
LOAD SIGNAL
[ON/OFF]××
●Indicates [ON/OFF] condition from the
electrical load signal.
ON ... Rear window defogger switch is
ON and/or lighting switch is in 2nd posi-
tion.
OFF ... Both rear window defogger
switch and lighting switch are OFF.
IGNITION SW
[ON/OFF]××
●Indicates [ON/OFF] condition from igni-
tion switch.
HEATER FAN SW
[ON/OFF]×
●Indicates [ON/OFF] condition from the
heater fan switch signal.
BRAKE SW
[ON/OFF]×
●Indicates [ON/OFF] condition from the
stop lamp switch signal.
INJ PULSE-B1
[msec]×
●Indicates the actual fuel injection pulse
width compensated by ECM according
to the input signals.●When the engine is stopped, a
certain computed value is indi-
cated. Monitored item
[Unit]ECM
INPUT
SIG-
NALSMAIN
SIG-
NALSCAN
DIAG
SUP-
PORT
MNTRDescription Remarks
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![NISSAN X-TRAIL 2001 Service Repair Manual EC-100
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B/FUEL SCHDL
[msec]×
●“Base fuel schedule” indicates the fuel
injection pulse width programmed into
ECM, prior to any learned on board cor-
rec NISSAN X-TRAIL 2001 Service Repair Manual EC-100
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TROUBLE DIAGNOSIS
B/FUEL SCHDL
[msec]×
●“Base fuel schedule” indicates the fuel
injection pulse width programmed into
ECM, prior to any learned on board cor-
rec](/manual-img/5/57405/w960_57405-449.png)
EC-100
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B/FUEL SCHDL
[msec]×
●“Base fuel schedule” indicates the fuel
injection pulse width programmed into
ECM, prior to any learned on board cor-
rection.
IGN TIMING
[BTDC]×
●Indicates the ignition timing computed
by ECM according to the input signals.●When the engine is stopped, a
certain value is indicated.
A/F ALPHA-B1 [%]×
●The mean value of the air-fuel ratio
feedback correction factor per cycle is
indicated.
●When the engine is stopped, a
certain value is indicated.
●This data also includes the data
for the air-fuel ratio learning con-
trol.
CAL/LD VALUE [%]
●“Calculated load value” indicates the
value of the current airflow divided by
peak airflow.
MASS AIRFLOW
[g·m/s]
●Indicates the mass airflow computed by
ECM according to the signal voltage of
the mass air flow sensor.
PURG VOL C/V
[%]
●Indicates the EVAP canister purge vol-
ume control solenoid valve control value
computed by the ECM according to the
input signals.
●The opening becomes larger as the
value increases.
INT/V TIM (B1)
[°CA]
●Indicates [°CA] of intake camshaft
advanced angle.
INT/V SOL (B1) [%]
●The control condition of the intake valve
timing control solenoid valve (deter-
mined by ECM according to the input
signals) is indicated.
ON ... intake valve timing control is oper-
ating.
OFF ... Intake valve timing control is not
operating.
VIAS S/V
[ON/OFF]
●The control condition of the VIAS control
solenoid valve (determined by ECM
according to the input signals) is indi-
cated.
ON ... VIAS control solenoid valve is
operating.
OFF ... VIAS control solenoid valve is
not operating.
AIR COND RLY
[ON/OFF]×
●The air conditioner relay control condi-
tion (determined by ECM according to
the input signals) is indicated.
FUEL PUMP RLY
[ON/OFF]×
●Indicates the fuel pump relay control
condition determined by ECM according
to the input signals.
THRTL RELAY
[ON/OFF]
●Indicates the throttle control motor relay
control condition determined by the
ECM according to the input signals. Monitored item
[Unit]ECM
INPUT
SIG-
NALSMAIN
SIG-
NALSCAN
DIAG
SUP-
PORT
MNTRDescription Remarks
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NOTE:
●Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically. COOLING NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
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NOTE:
●Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically. COOLING](/manual-img/5/57405/w960_57405-450.png)
TROUBLE DIAGNOSIS
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NOTE:
●Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically. COOLING FAN
[HI/LOW/OFF]
●Indicates the condition of the cooling fan
(determined by ECM according to the
input signals).
HI ... High speed operation
LOW ... Low speed operation
OFF ... Stop
HO2S1 HTR (B1)
[ON/OFF]
●Indicates [ON/OFF] condition of heated
oxygen sensor 1 heater determined by
ECM according to the input signals.
HO2S2 HTR (B1)
[ON/OFF]
●Indicates [ON/OFF] condition of heated
oxygen sensor 2 heater determined by
ECM according to the input signals.
IDL A/V LEARN
[YET/CMPLT]
●Display the condition of idle air volume
learning
YET ... Idle air volume learning has not
been performed yet.
CMPLT ... Idle air volume learning has
already been performed successfully.
TRVL AFTER MIL
[km] or [mile]
●Distance traveled while MI is activated.
AC PRESS SEN
[V]
●The signal voltage from the refrigerant
pressure sensor is displayed.
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. Frequency
[msec], [Hz] or [%]
DUTY-HI
DUTY-LOW
PLS WIDTH-HI
PLS WIDTH-LOW
CAN COMM
[OK/NG]×
●Indicates the communication condition
of CAN communication 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]× Monitored item
[Unit]ECM
INPUT
SIG-
NALSMAIN
SIG-
NALSCAN
DIAG
SUP-
PORT
MNTRDescription Remarks
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DATA MONITOR (SPEC) MODE
Monitored Item
NOTE:
●Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatic NISSAN X-TRAIL 2001 Service Repair Manual EC-102
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TROUBLE DIAGNOSIS
DATA MONITOR (SPEC) MODE
Monitored Item
NOTE:
●Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatic](/manual-img/5/57405/w960_57405-451.png)
EC-102
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TROUBLE DIAGNOSIS
DATA MONITOR (SPEC) MODE
Monitored Item
NOTE:
●Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
ACTIVE TEST MODE
Test Item
Monitored item [Unit]ECM
input
signalsMain
signalsDescription Remarks
ENG SPEED [rpm]×
●Indicates the engine speed computed
from the signals of the crankshaft posi-
tion sensor (POS) and camshaft position
sensor (PHASE).
MAS A/F SE-B1 [V]××
●The signal voltage of the mass air flow
sensor specification is displayed.●When engine is running specification
range is indicated.
B/FUEL SCHDL
[msec]
●“Base fuel schedule” indicates the fuel
injection pulse width programmed into
ECM, prior to any learned on board cor-
rection.
●When engine is running specification
range is indicated.
A/F ALPHA-B1 [%]×
●The mean value of the air-fuel ratio feed-
back correction factor per cycle is indi-
cated.●When engine is running specification
range is indicated.
●This data also includes the data for the
air-fuel ratio learning control.
TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
FUEL INJEC-
TION
●Engine: Return to the original
trouble condition
●Change the amount of fuel injec-
tion using CONSULT-II.If trouble symptom disappears, see
CHECK ITEM.
●Harness and connectors
●Fuel injectors
●Heated oxygen sensor 1
IGNITION TIM-
ING
●Engine: Return to the original
trouble condition
●Timing light: Set
●Retard the ignition timing using
CONSULT-II.If trouble symptom disappears, see
CHECK ITEM.
●Perform “Idle Air Volume Learn-
ing”.
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-II.Engine runs rough or dies.
●Harness and connectors
●Compression
●Fuel injectors
●Power transistor
●Spark plugs
●Ignition coils
COOLING FAN
●Ignition switch: ON
●Turn the cooling fan “ON” and
“OFF” with CONSULT-II.Cooling fan moves and stops.
●Harness and connectors
●Cooling fan relay
●Cooling fan motor
ENG COOLANT
TEMP
●Engine: Return to the original
trouble condition
●Change the engine coolant tem-
perature using CONSULT-II.If trouble symptom disappears, see
CHECK ITEM.
●Harness and connectors
●Engine coolant temperature sen-
sor
●Fuel injectors
FUEL PUMP
RELAY
●Ignition switch: ON (Engine
stopped)
●Turn the fuel pump relay “ON”
and “OFF” using CONSULT-II
and listen to operating sound.Fuel pump relay makes the operat-
ing sound.●Harness and connectors
●Fuel pump relay
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DTC & SRT CONFIRMATION MODE
SRT STATUS Mode
For details, refer to EC-48, "SYSTEM READINESS TEST (SRT) CODE" .
SRT Work NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
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DTC & SRT CONFIRMATION MODE
SRT STATUS Mode
For details, refer to EC-48, "SYSTEM READINESS TEST (SRT) CODE" .
SRT Work](/manual-img/5/57405/w960_57405-452.png)
TROUBLE DIAGNOSIS
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DTC & SRT CONFIRMATION MODE
SRT STATUS Mode
For details, refer to EC-48, "SYSTEM READINESS TEST (SRT) CODE" .
SRT Work Support Mode
This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.
DTC Work Support Mode
REAL TIME DIAGNOSIS IN DATA MONITOR MODE (RECORDING VEHICLE DATA)
Description
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/1st trip DTC and malfunction item 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 at right, and the data after the malfunction detec-
tion 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/1st trip DTC and malfunction item 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.
VIAS SOL VALVE
●Ignition switch: ON
●Turn solenoid valve “ON” and
“OFF” with CONSULT-II and lis-
ten for operating sound.Solenoid valve makes an operating
sound.●Harness and connectors
●Solenoid valve
PURG VOL
CONT/V
●Engine: After warming up, run
engine at 1,500 rpm.
●Change the EVAP canister purge
volume control solenoid valve
opening percent using CON-
SULT-II.Engine speed changes according to
the opening percent.●Harness and connectors
●Solenoid valve
V/T ASSIGN
ANGLE
●Engine: Return to the original
trouble condition
●Change intake valve timing using
CONSULT-II.If trouble symptom disappears, see
CHECK ITEM.
●Harness and connectors
●Intake valve timing control sole-
noid valve TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
Test mode Test item Condition Reference page
HO2S1HO2S1 (B1) P0133
Refer to corresponding
trouble diagnosis for
DTC.EC-169
HO2S1 (B1) P0134EC-178
HO2S1 (B1) P1143EC-295
HO2S1 (B1) P1144EC-301
HO2S2HO2S2 (B1) P0139EC-192HO2S2 (B1) P1146EC-307
HO2S2 (B1) P1147EC-315
SEF706XSEF707X
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Operation
1. “AUTO TRIG”
–While trying to detect the DTC/1st trip DTC by performing the “DTC Confirmation Procedure”, be sure to
select to “D NISSAN X-TRAIL 2001 Service Repair Manual EC-104
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TROUBLE DIAGNOSIS
Operation
1. “AUTO TRIG”
–While trying to detect the DTC/1st trip DTC by performing the “DTC Confirmation Procedure”, be sure to
select to “D](/manual-img/5/57405/w960_57405-453.png)
EC-104
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TROUBLE DIAGNOSIS
Operation
1. “AUTO TRIG”
–While trying to detect the DTC/1st trip DTC by performing the “DTC Confirmation 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/1st trip
DTC will be displayed. (Refer to “Incident Simulation Tests” in GI-23, "
How to Perform Efficient Diagnosis
for an Electrical Incident" .)
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.
Generic Scan Tool (GST) FunctionEBS00M12
DESCRIPTION
Generic Scan Tool (OBDII scan tool) complying with SAE J1978 has
8 different functions explained below.
ISO9141 is used as the protocol.
The name “GST” or “Generic Scan Tool” is used in this service man-
ual.
PBIB0197E
SEF139P
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FUNCTION
GST INSPECTION PROCEDURE
1. Turn ignition switch OFF.
2. Connect “GST” to data link connector, which is located un NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
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FUNCTION
GST INSPECTION PROCEDURE
1. Turn ignition switch OFF.
2. Connect “GST” to data link connector, which is located un](/manual-img/5/57405/w960_57405-454.png)
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FUNCTION
GST INSPECTION PROCEDURE
1. Turn ignition switch OFF.
2. Connect “GST” to data link connector, which is located under LH
dash panel near the fuse box cover.
3. Turn ignition switch ON.
4. Enter the program according to instruction on the screen or in
the operation manual.
(*: Regarding GST screens in this section, sample screens are
shown.)
Diagnostic test mode Function
MODE 1 READINESS TESTSThis mode gains access to current emission-related data values, including analog inputs
and outputs, digital inputs and outputs, and system status information.
MODE 2 (FREEZE DATA)This mode gains access to emission-related data value which were stored by ECM during
the freeze frame. For details, refer to EC-48, "
FREEZE FRAME DATA AND 1ST TRIP
FREEZE FRAME DATA" .
MODE 3 DTCsThis mode gains access to emission-related power train trouble codes which were stored
by ECM.
MODE 4 CLEAR DIAG INFOThis mode can clear all emission-related diagnostic information. This includes:
●Clear number of diagnostic trouble codes (MODE 1)
●Clear diagnostic trouble codes (MODE 3)
●Clear trouble code for freeze frame data (MODE 1)
●Clear freeze frame data (MODE 2)
●Reset status of system monitoring test (MODE 1)
●Clear on board monitoring test results (MODE 6 and 7)
MODE 6 (ON BOARD TESTS)This mode accesses the results of on board diagnostic monitoring tests of specific com-
ponents/systems that are not continuously monitored.
MODE 7 (ON BOARD TESTS)This mode enables the off board test drive to obtain test results for emission-related pow-
ertrain components/systems that are continuously monitored during normal driving condi-
tions.
MODE 8 — This mode is not applicable on this vehicle.
MODE 9 (CALIBRATION ID)This mode enables the off-board test device to request specific vehicle information such
as Vehicle Identification Number (VIN) and Calibration IDs.
PBIB0376E
SEF398S
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5. Perform each diagnostic mode according to each service proce-
dure.
For further information, see the GST Operation Manual of the
tool maker.
NISSAN X-TRAIL 2001 Service Repair Manual EC-106
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TROUBLE DIAGNOSIS
5. Perform each diagnostic mode according to each service proce-
dure.
For further information, see the GST Operation Manual of the
tool maker.](/manual-img/5/57405/w960_57405-455.png)
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5. Perform each diagnostic mode according to each service proce-
dure.
For further information, see the GST Operation Manual of the
tool maker.
CONSULT-II Reference Value in Data MonitorEBS00M13
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.
i.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in
spite of the ignition timing not being adjusted to the specification data. This IGN TIMING monitors the data calculated by the ECM
according to the signals input from the camshaft position sensor and other ignition timing related sensors.
SEF416S
MONITOR ITEM CONDITION SPECIFICATION
ENG SPEED
●Run engine and compare CONSULT-II value with the tachometer indica-
tion.Almost the same speed as the
tachometer indication.
MAS A/F SE-B1
●Engine: After warming up
●Air conditioner switch: OFF
●Shift lever: N
●No-loadIdle Approx. 1.0 - 1.5V
2,500 rpm Approx. 1.6 - 2.0V
B/FUEL SCHDL
●Engine: After warming up
●Shift lever: N
●Air conditioner switch: OFF
●No-loadIdle 2.5 - 3.5 msec
2,000 rpm 2.5 - 3.5 msec
A/F ALPHA-B1
●Engine: After warming upMaintaining engine speed at 2,000
rpm54% - 155%
COOLAN TEMP/S
●Engine: After warming up More than 70°C (158°F)
HO2S1 (B1)
●Engine: After warming upMaintaining engine speed at 2,000
rpm0 - 0.3V ←→ Approx. 0.6 - 1.0V
HO2S2 (B1)
●Engine: After warming up
●Keeping the engine speed at
between 3,500 to 4,000 rpm for
one minute and at idle for one
minute under no loadRevving engine from idle up to 3,000
rpm quickly0 - 0.3V ←→ Approx. 0.6 - 1.0V
HO2S1 MNTR (B1)
●Engine: After warming upMaintaining engine speed at 2,000
rpmLEAN ←→ RICH
Changes more than 5 times dur-
ing 10 seconds.
HO2S2 MNTR (B1)
●Engine: After warming up
●Keeping the engine speed at
between 3,500 to 4,000 rpm for
one minute and at idle for one
minute under no loadRevving engine from idle up to 3,000
rpm quicklyLEAN ←→ RICH
VEH SPEED SE
●Turn drive wheels and compare CONSULT-II value with the speedome-
ter indication.Almost the same speed as the
speedometer indication.
BATTERY VOLT
●Ignition switch: ON (Engine stopped) 11 - 14V
ACCEL SEN1
●Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.41 - 0.72V
Accelerator pedal: Fully depressed 3.2 - 4.9V
ACCEL SEN2*
2●Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.15 - 0.98V
Accelerator pedal: Fully depressed 2.98 - 4.9V