2001 NISSAN X-TRAIL Service Repair Manual

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Page 1121 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual BASIC SERVICE PROCEDURE
EC-771
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EC
BASIC SERVICE PROCEDUREPFP:00018
Idle Speed and Ignition Timing CheckEBS00MSG
IDLE SPEED
With CONSULT-II
Check idle spee

Page 1122 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-772
[QR20(WITH EURO-OBD)]
BASIC SERVICE PROCEDURE
–Check ignition timing.
Accelerator Pedal Released Position LearningEBS00MSI
DESCRIPTION
“Accelerator Pedal Released Position Learning” is an

Page 1123 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual BASIC SERVICE PROCEDURE
EC-773
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Learning will be cancelled if any of the following conditions are missed for even a moment.
●Battery voltage: More than

Page 1124 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-774
[QR20(WITH EURO-OBD)]
BASIC SERVICE PROCEDURE
Without CONSULT-II
NOTE:
●It is better to count the time accurately with a clock.
●It is impossible to switch the diagnostic mode when

EC-774
[QR20(WITH EURO-OBD)]
BASIC SERVICE PROCEDURE
Without CONSULT-II
NOTE:
●It is better to count the time accurately with a clock.
●It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit
has a malfunction.
1. Perform EC-772, "
Accelerator Pedal Released Position Learning" .
2. Perform EC-772, "
Throttle Valve Closed Position Learning" .
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic “PREPARATION” (previously mentioned) are in good order.
5. Turn ignition switch “OFF” and wait at least 10 seconds.
6. Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
7. Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MI stops
blinking and turned ON.
9. Fully release the accelerator pedal within 3 seconds after the MI goes off.
10. Start engine and let it idle.
11. Wait 20 seconds.
12. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the
specifications.
13. If idle speed and ignition timing are not within the specification, “Idle Air Volume Learning” will not be car-
ried out successfully. In this case, find the cause of the incident by referring to the “DIAGNOSTIC PROCE-
DURE” below.
DIAGNOSTIC PROCEDURE
If idle air volume learning cannot be performed successfully, proceed as follows:
1.Check that throttle valve is fully closed.
2.Check PCV valve operation.
3.Check that downstream of throttle valve is free from air leakage.
4.When the above three items check out OK, engine component parts and their installation condi-
tion are questionable. Check and eliminate the cause of the incident.
Idle speed M/T: 650±50 rpm
A/T: 700±50 rpm (in “P” or “N” position)
Ignition timing M/T: 14±5° BTDC
A/T: 16±5° BTDC (in “P” or “N” position)
ITEM SPECIFICATION
Idle speed M/T: 650±50 rpm
A/T: 700±50 rpm (in “P” or “N” position)
Ignition timing M/T: 14±5° BTDC
A/T: 16±5° BTDC (in “P” or “N” position)
PBIB0665E

Page 1125 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual BASIC SERVICE PROCEDURE
EC-775
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EC
It is useful to perform EC-843, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
5.If any of the following condit

BASIC SERVICE PROCEDURE
EC-775
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EC
It is useful to perform EC-843, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
5.If any of the following conditions occur after the engine has started, eliminate the cause of the
incident and perform “Idle air volume learning” all over again:
–Engine stalls.
–Erroneous idle.
Fuel Pressure CheckEBS00MSK
FUEL PRESSURE RELEASE
Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
NOTE:
Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel pres-
sure cannot be completely released because QR engine models do not have fuel return system.
With CONSULT-II
1. Turn ignition switch “ON”.
2. Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT”
mode with CONSULT-II.
3. Start engine.
4. After engine stalls, crank it two or three times to release all fuel
pressure.
5. Turn ignition switch “OFF”.
Without CONSULT-II
1. Remove fuel pump fuse located in fuse box.
2. Start engine.
3. After engine stalls, crank it two or three times to release all fuel
pressure.
4. Turn ignition switch “OFF”.
5. Reinstall fuel pump fuse after servicing fuel system.
FUEL PRESSURE CHECK
CAUTION:
●The fuel hose connection method used when taking fuel pressure check must not be used for
other purposes.
●Take care for not to scratch and not to put debris around connection area when servicing, so that
the quick connector keeps sealability with O-rings inside.
1. Release fuel pressure to zero. Refer to EC-775, "
FUEL PRESSURE RELEASE" .
2. Prepare fuel hose for fuel pressure check, and connect fuel pressure gauge.
●Use suitable fuel hose for fuel pressure check (genuine NISSAN fuel hose without quick connector).
●To avoid unnecessary force or tension to hose, use moderately long fuel hose for fuel pressure check.
●Do not use the fuel hose for checking fuel pressure with damage or cracks on it.
●Use Pressure Gauge to check fuel pressure.
3. Remove fuel hose. Refer to EM-16, "
INTAKE MANIFOLD" .
●Do not twist or kink fuel hose because it is plastic hose.
●Do not remove fuel hose from quick connector.
●Keep the original fuel hose to be free from intrusion of dust or foreign substances with a suitable cover.
SEF214Y
PBIB0508E

Page 1126 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-776
[QR20(WITH EURO-OBD)]
BASIC SERVICE PROCEDURE
4. Install the fuel pressure gauge as shown in the figure.
●Wipe off oil or dirt from hose insertion part using cloth moist-
ened with gasoline.

Page 1127 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-777
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ON BOARD DIAGNOSTIC (OBD) SYSTEMPFP:00028
IntroductionEBS00MSL
The ECM has an on board diagnostic system, which

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-777
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ON BOARD DIAGNOSTIC (OBD) SYSTEMPFP:00028
IntroductionEBS00MSL
The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:
The above information can be checked using procedures listed in the table below.
×: Applicable —: Not applicable
*1: 1st trip DTCs for self-diagnoses concerning SRT items cannot be shown on the GST display.
*2: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.
The malfunction indicator (MI) on the instrument panel lights up when the same malfunction is detected in two
consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to EC-753
.)
Two Trip Detection LogicEBS00MSM
When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MI will not light up at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MI lights up. The MI lights up at the same time when the DTC is stored. <2nd trip>
The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed during
vehicle operation. Specific on board diagnostic items will cause the ECM to light up or blink the MI, and store
DTC and Freeze Frame data, even in the 1st trip, as shown below.
×: Applicable —: Not applicable Emission-related diagnostic information ISO Standard
Diagnostic Trouble Code (DTC) Mode 3 of ISO 15031-5
Freeze Frame data Mode 2 of ISO 15031-5
System Readiness Test (SRT) code Mode 1 of ISO 15031-5
1st Trip Diagnostic Trouble Code (1st Trip DTC) Mode 7 of ISO 15031-5
1st Trip Freeze Frame data
Test values and Test limits Mode 6 of ISO 15031-5
Calibration ID Mode 9 of ISO 15031-5
DTC 1st trip DTCFreeze Frame
data1st trip Freeze
Frame dataSRT code Test value
CONSULT-II×× × × ×—
GST×
×*
1×—××
ECM×
×*
2————
ItemsMI DTC 1st trip DTC
1st trip 2nd trip
1st trip
displaying2nd trip
displaying1st trip
displaying2nd trip
display-
ing BlinkingLighting
upBlinkingLighting
up
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0304 is being detected×———— —×—
Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0304 is being detected——×——×——
One trip detection diagnoses
(Refer to EC-753
)—×——×—×—
Except above — — —×—××—

Page 1128 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-778
[QR20(WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Emission-related Diagnostic Information
EBS00MSN
EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS
×: Applicable —: Not applicable
DTC*1
It

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