2005 NISSAN X-TRAIL sensor

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Page 1004 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-600
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TROUBLE DIAGNOSIS

62 YIntake valve timing
control solenoid valve[Engine is running]
Warm-up condition
Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Warm

Page 1005 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual TROUBLE DIAGNOSIS
EC-601
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84 L/YElectrical load signal
(Headlamp signal)[Ignition switch: ON]
Lighting switch: 2ND position (placed in
LOW position

Page 1006 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-602
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TROUBLE DIAGNOSIS

99*1W/R ASCD steering switch[Ignition switch: ON]
ASCD steering switch: OFFApproximately 4V
[Ignition switch: ON]
MAIN switch: PressedApproximately

Page 1009 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual TROUBLE DIAGNOSIS
EC-605
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ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
X: Applicable
*1: This item includes 1st trip DTCs.ItemDIAGNOSTI

Page 1011 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual TROUBLE DIAGNOSIS
EC-607
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WORK SUPPORT MODE
Work Item
*: This function is not necessary in the usual service procedure.
SELF-DIAG RESULTS MODE
Self D

TROUBLE DIAGNOSIS
EC-607
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WORK SUPPORT MODE
Work Item
*: This function is not necessary in the usual service procedure.
SELF-DIAG RESULTS MODE
Self Diagnostic Item
Regarding items of DTC and 1st trip DTC, refer to EC-533, "INDEX FOR DTC" .
Freeze Frame Data and 1st Trip Freeze Frame Data
*: The items are the same as those of 1st trip freeze frame data.WORK ITEM CONDITION USAGE
FUEL PRESSURE RELEASE
FUEL PUMP WILL STOP BY TOUCHING “START” DUR-
ING IDLING.
CRANK A FEW TIMES AFTER ENGINE STALLS.When releasing fuel pressure
from fuel line
IDLE AIR VOL LEARN
THE IDLE AIR VOLUME THAT KEEPS THE ENGINE
WITHIN THE SPECIFIED RANGE IS MEMORIZED IN
ECM.When learning the idle air volume
SELF-LEARNING CONT
THE COEFFICIENT OF SELF-LEARNING CONTROL
MIXTURE RATIO RETURNS TO THE ORIGINAL COEF-
FICIENT.When clearing the coefficient of
self-learning control value
TARGET IDLE RPM ADJ*
IDLE CONDITION When setting target idle speed
TARGET IGN TIM ADJ*
IDLE CONDITION When adjusting target ignition tim-
ing
Freeze frame data
item*Description
DIAG TROUBLE
CODE
[PXXXX]
The engine control component part/control system has a trouble code, it is displayed as PXXXX. (Refer to
EC-533, "
INDEX FOR DTC" .)
FUEL SYS-B1
“Fuel injection system status” at the moment a malfunction is detected is displayed.
One mode in the following is displayed.
Mode2: Open loop due to detected system malfunction
Mode3: Open loop due to driving conditions (power enrichment, deceleration enleanment)
Mode4: Closed loop - using oxygen sensor(s) as feedback for fuel control
Mode5: Open loop - has not yet satisfied condition to go to closed loop
COOLANT TEMP
[°C] or [°F]
The engine coolant temperature at the moment a malfunction is detected is displayed.
L-FUEL TRM-B1 [%]
“Long-term fuel trim” at the moment a malfunction is detected is displayed.
The long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule
than short-term fuel trim.
S-FUEL TRM-B1 [%]
“Short-term fuel trim” at the moment a malfunction is detected is displayed.
The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel
schedule.
ENGINE SPEED
[rpm]
The engine speed at the moment a malfunction is detected is displayed.
VHCL SPEED
[km/h] or [mph]
The vehicle speed at the moment a malfunction is detected is displayed.
B/FUEL SCHDL
[msec]
The base fuel schedule at the moment a malfunction is detected is displayed.
INT/A TEMP SE
[°C] or [°F]
The intake air temperature at the moment a malfunction is detected is displayed.

Page 1012 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-608
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TROUBLE DIAGNOSIS

DATA MONITOR MODE
Monitored Item
×: Applicable
Monitored item [Unit]ECM
INPUT
SIGNALSMAIN
SIG-
NALSDescription Remarks
ENG SPEED [rpm]××
Indic

EC-608
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TROUBLE DIAGNOSIS

DATA MONITOR MODE
Monitored Item
×: Applicable
Monitored item [Unit]ECM
INPUT
SIGNALSMAIN
SIG-
NALSDescription Remarks
ENG SPEED [rpm]××
Indicates the engine speed computed from the
signals of the crankshaft position sensor
(POS) and camshaft position sensor (PHASE).
Accuracy becomes poor if engine
speed drops below the idle rpm.
If the signal is interrupted while the
engine is running, an abnormal
value may be indicated.
MAS A/F SE-B1 [V]××
The signal voltage of the mass air flow sensor
is displayed.When the engine is stopped, a
certain value is indicated.
B/FUEL SCHDL
[msec]×
“Base fuel schedule” indicates the fuel injec-
tion pulse width programmed into ECM, prior
to any learned on board correction.
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.
COOLAN TEMP/S
[°C] or [°F]××
The engine coolant temperature (determined
by the signal voltage of the engine coolant
temperature sensor) is displayed.
When the engine coolant tempera-
ture sensor is open or short-cir-
cuited, ECM enters fail-safe mode.
The engine coolant temperature
determined by the ECM is dis-
played.
HO2S1 (B1) [V]××
The signal voltage of the heated oxygen sen-
sor 1 is displayed.
HO2S2 (B1) [V]×
The signal voltage of the heated oxygen sen-
sor 2 is displayed.
HO2S1 MNTR (B1)
[RICH/LEAN]××
Display of heated oxygen sensor 1 signal dur-
ing air-fuel ratio feedback control:
RICH: means the mixture became “rich”, and
control is being affected toward a leaner mix-
ture.
LEAN: means the mixture became “lean”, and
control is being affected toward a rich mixture.After turning ON the ignition
switch, “RICH” is displayed until
air-fuel mixture ratio feedback
control begins.
When the air-fuel ratio feedback is
clamped, the value just before the
clamping is displayed continu-
ously.
HO2S2 MNTR (B1)
[RICH/LEAN]×
Display of heated oxygen sensor 2 signal:
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 displayed.
ACCEL SEN 1 [V]××
The accelerator pedal position sensor signal
voltage is displayed.ACCEL SEN 2 signal is converted
by ECM internally. Thus, it differs
from ECM terminal voltage signal. ACCEL SEN 2 [V]×
THRTL SEN 1 [V]××
The throttle position sensor signal voltage is
displayed.THRTL SEN 2 signal is converted
by ECM internally. Thus, it differs
from ECM terminal voltage signal. 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.

Page 1013 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual TROUBLE DIAGNOSIS
EC-609
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START SIGNAL
[ON/OFF]××Indicates start signal status [ON/OFF] com-
puted by the ECM according to the signals of
engine

TROUBLE DIAGNOSIS
EC-609
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START SIGNAL
[ON/OFF]××Indicates start signal status [ON/OFF] com-
puted by the ECM according to the signals of
engine speed and battery voltage.After starting the engine, [OFF] is
displayed regardless of the starter
signal.
CLSD THL POS
[ON/OFF]××
Indicates idle position [ON/OFF] computed by
ECM according to the accelerator pedal posi-
tion sensor signal.
AIR COND SIG
[ON/OFF]××
Indicates [ON/OFF] condition of the air condi-
tioner switch as determined by the air condi-
tioner signal.
P/N POSI SW
[ON/OFF]××
Indicates [ON/OFF] condition from the park/
neutral position (PNP) switch signal.
PW/ST SIGNAL
[ON/OFF]××
[ON/OFF] condition of the power steering
pressure sensor as determined by the power
steering pressure sensor signal is indicated.
LOAD SIGNAL
[ON/OFF]××
Indicates [ON/OFF] condition from the electri-
cal load signal.
ON: Rear window defogger switch is ON and/
or lighting switch is in 2nd position (placed in
LOW position for models with Xenon head-
lamp).
OFF: Both rear window defogger switch and
lighting switch are OFF.
IGNITION SW
[ON/OFF]×
Indicates [ON/OFF] condition from ignition
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.
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.
PURG VOL C/V [%]
Indicates the EVAP canister purge volume
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 value of the intake valve timing
control solenoid valve (determined by ECM
according to the input signal) is indicated.
The advance angle becomes larger as the
value increases
VIAS S/V*
[ON/OFF]
The control condition of the VIAS control sole-
noid valve (determined by ECM according to
the input signals) is indicated.
ON: VIAS control solenoid valve is operating.
OFF: VIAS control solenoid valve is not oper-
ating.
AIR COND RLY
[ON/OFF]×
The air conditioner relay control condition
(determined by ECM according to the input
signals) is indicated. Monitored item [Unit]ECM
INPUT
SIGNALSMAIN
SIG-
NALSDescription Remarks

Page 1014 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-610
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TROUBLE DIAGNOSIS

FUEL PUMP RLY
[ON/OFF]×Indicates the fuel pump relay control condition
determined by ECM according to the input sig-
nals.
THRTL RELAY
[ON/OFF]×

EC-610
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TROUBLE DIAGNOSIS

FUEL PUMP RLY
[ON/OFF]×Indicates the fuel pump relay control condition
determined by ECM according to the input sig-
nals.
THRTL RELAY
[ON/OFF]×
Indicates the throttle control motor relay con-
trol condition determined by the ECM accord-
ing to the input signals.
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 oxy-
gen sensor 1 heater determined by ECM
according to the input signals.
HO2S2 HTR (B1)
[ON/OFF]
Indicates [ON/OFF] condition of heated oxy-
gen sensor 2 heater determined by ECM
according to the input signals.
IDL A/V LEARN
[YET/CMPLT]
Display the condition of Idle Air Volume Learn-
ing
YET: Idle Air Volume Learning has not been
performed yet.
CMPLT: Idle Air Volume Learning has already
been performed successfully.
AC PRESS SEN [V]
The signal voltage from the refrigerant pres-
sure sensor is displayed.
VHCL SPEED SE*
[km/h] or [mph]
The vehicle speed computed from the vehicle
speed signal sent from TCM is displayed.
SET VHCL SPD*
[km/h] or [mph]
The preset vehicle speed is displayed.
MAIN SW*
[ON/OFF]
Indicates [ON/OFF] condition from MAIN
switch signal.
CANCEL SW*
[ON/OFF]
Indicates [ON/OFF] condition from CANCEL
switch signal.
RESUME/ACC SW*
[ON/OFF]
Indicates [ON/OFF] condition from RESUME/
ACCELERATE switch signal.
SET SW*
[ON/OFF]
Indicates [ON/OFF] condition from SET/
COAST switch signal.
BRAKE SW1*
[ON/OFF]
Indicates [ON/OFF] condition from ASCD
brake switch signal.
BRAKE SW2*
[ON/OFF]
Indicates [ON/OFF] condition of stop lamp
switch signal.
VHCL SPD CUT*
[NON/CUT]
Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at the
ASCD set speed.
CUT: Vehicle speed increased to excessively
high compared with the ASCD set speed, and
ASCD operation is cut off.
LO SPEED CUT*
[NON/CUT]
Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at the
ASCD set speed.
CUT: Vehicle speed decreased to excessively
low compared with the ASCD set speed, and
ASCD operation is cut off. Monitored item [Unit]ECM
INPUT
SIGNALSMAIN
SIG-
NALSDescription Remarks

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