NISSAN X-TRAIL 2001 Service Repair Manual

BASIC SERVICE PROCEDURE
EC-771
[QR20(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
BASIC SERVICE PROCEDUREPFP:00018
Idle Speed and Ignition Timing CheckEBS00MSG
IDLE SPEED
With CONSULT-II
Check idle speed in “DATA MONITOR” mode with CONSULT-II.
With GST
Check idle speed with GST.
IGNITION TIMING
Any of following two methods may be used.
●Method A
–Attach timing light to loop wire as shown.
–Check ignition timing.
●Method B
–Remove No. 1 ignition coil.
–Connect No. 1 ignition coil and No. 1 spark plug with suitable
high-tension wire as shown, and attach timing light clamp to this
wire.
SEF058Y
PBIB0515E
PBIB0509E
PBIB0516E

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 operation to learn the fully released position of the accel-
erator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each time
harness connector of accelerator pedal position sensor or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch “ON” and wait at least 2 seconds.
3. Turn ignition switch “OFF” wait at least 10 seconds.
4. Turn ignition switch “ON” and wait at least 2 seconds.
5. Turn ignition switch “OFF” wait at least 10 seconds.
Throttle Valve Closed Position LearningEBS00MSH
DESCRIPTION
“Throttle Valve Closed Position Learning” is an operation to learn the fully closed position of the throttle valve
by monitoring the throttle position sensor output signal. It must be performed each time harness connector of
electric throttle control actuator or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch “ON” wait at least 10seconds.
3. Turn ignition switch “OFF” wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
Idle Air Volume LearningEBS00MSJ
DESCRIPTION
“Idle Air Volume Learning” is an operation to learn the idle air volume that keeps each engine within the spe-
cific range. It must be performed under any of the following conditions:
●Each time electric throttle control actuator or ECM is replaced.
●Idle speed or ignition timing is out of specification.
PREPARATION
Before performing “Idle Air Volume Learning”, make sure that all of the following conditions are satisfied.
SEF166Y
PBIB0514E

BASIC SERVICE PROCEDURE
EC-773
[QR20(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
Learning will be cancelled if any of the following conditions are missed for even a moment.
●Battery voltage: More than 12.9V (At idle)
●Engine coolant temperature: 70 - 100°C (158 - 212°F)
●PNP switch: ON
●Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, set lighting switch to the 1st position to light
only small lamps.
●Steering wheel: Neutral (Straight-ahead position)
●Vehicle speed: Stopped
●Transmission: Warmed-up
For A/T models with CONSULT-II, drive vehicle until “FLUID TEMP SE” in “DATA MONITOR” mode of “A/
T” system indicates less than 0.9V.
For A/T models without CONSULT-II and M/T models, drive vehicle for 10 minutes.
OPERATION PROCEDURE
With CONSULT-II
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. Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.
6. Touch “START” and wait 20 seconds.
7. Make sure that “CMPLT” is displayed on CONSULT-II screen. If
“CMPLT” is not displayed, “Idle Air Volume Learning” will not be
carried out successfully. In this case, find the cause of the inci-
dent by referring to the “DIAGNOSTIC PROCEDURE” below.
8. Rev up the engine two or three times and make sure that idle
speed and ignition timing are within the specifications.
SEF452Y
SEF454Y
ITEM SPECIFICATION
MBIB0238E

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

BASIC SERVICE PROCEDURE
EC-775
[QR20(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
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

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.
●Apply proper amount of gasoline between top of the fuel tube
and No.1 spool.
●Insert fuel hose for fuel pressure check until it touches the
No.1 spool on fuel tube.
●Use NISSAN genuine hose clamp (part number: 16439
N4710 or 16439 40U00).
●When reconnecting fuel line, always use new clamps.
●When reconnecting fuel hose, check the original fuel hose for
damage and abnormality.
●Use a torque driver to tighten clamps.
●Install hose clamp to the position within 1 - 2 mm (0.04 - 0.08
in).
●Make sure that clamp screw does not contact adjacent parts.
5. After connecting fuel hose for fuel pressure check, pull the hose
with a force of approximately 98 N (10 kg, 22 lb) to confirm fuel
tube does not come off.
6. Turn ignition switch “ON”, and check for fuel leakage.
7. Start engine and check for fuel leakage.
8. Read the indication of fuel pressure gauge.
●Do not perform fuel pressure check with system operating. Fuel pressure gauge may indicate false
readings.
●During fuel pressure check, confirm for fuel leakage from fuel connection every 3 minutes.
9. If result is unsatisfactory, go to next step.
10. Check the following.
●Fuel hoses and fuel tubes for clogging
●Fuel filter for clogging
●Fuel pump
●Fuel pressure regulator for clogging
If OK, replace fuel pressure regulator.
If NG, repair or replace.Tightening torque: 1 - 1.5 N·m (0.1 - 0.15 kg-m,
9 - 13 in-lb)
At idling:
Approximately 350 kPa (3.5 bar, 3.57 kg/cm
2 , 51 psi)
PBIB0669E
PBIB0670E

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-777
[QR20(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
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 — — —×—××—

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
Items
(CONSULT-II screen terms)SRT codeTest value/
Te s t l i m i t
(GST only)1st trip
DTC*1Reference page
CONSULT-II
GST*2ECM*3
U1000 1000*6 CAN COMM CIRCUIT*7 — — —EC-854
P0000 0000NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.————
P0011 0011 INT/V TIM CONT-B1 — —×EC-857
P0031 0031 HO2S1 HTR (B1)××
×*4EC-860
P0032 0032 HO2S1 HTR (B1)××
×*4EC-860
P0037 0037 HO2S2 HTR (B1)××
×*4EC-865
P0038 0038 HO2S2 HTR (B1)××
×*4EC-865
P0102 0102 MAF SEN/CIRCUIT — — —EC-870
P0103 0103 MAF SEN/CIRCUIT — — —EC-870
P0112 0112 IAT SEN/CIRCUIT — —×EC-876
P0113 0113 IAT SEN/CIRCUIT — —×EC-876
P0117 0117 ECT SEN/CIRCUIT — — —EC-881
P0118 0118 ECT SEN/CIRCUIT — — —EC-881
P0120 0120 THRTL POS SEN/CIRC — — —EC-886
P0121 0121 APP SEN/CIRCUIT — — —EC-893
P0132 0132 HO2S1 (B1)××
×*4EC-899
P0133 0133 HO2S1 (B1)××
×*4EC-905
P0134 0134 HO2S1 (B1)××
×*4EC-914
P0138 0138 HO2S2 (B1)××
×*4EC-921
P0139 0139 HO2S2 (B1)××
×*4EC-927
P0171 0171 FUEL SYS-LEAN-B1 — —×EC-934
P0172 0172 FUEL SYS-RICH-B1 — —×EC-940
P0300 0300 MULTI CYL MISFIRE — —×EC-946
P0301 0301 CYL 1 MISFIRE — —×EC-946
P0302 0302 CYL 2 MISFIRE — —×EC-946
P0303 0303 CYL 3 MISFIRE — —×EC-946
P0304 0304 CYL 4 MISFIRE — —×EC-946
P0327 0327 KNOCK SEN/CIRC-B1 — —×EC-951
P0328 0328 KNOCK SEN/CIRC-B1 — —×EC-951
P0335 0335 CKP SEN/CIRCUIT — —×EC-956
P0340 0340 CMP SEN/CIRCUIT — —×EC-962
P0420 0420 TW CATALYST SYS-B1××
×*4EC-968
P0444 0444 PURG VOLUME CONT/V — —×EC-972
P0445 0445 PURG VOLUME CONT/V — —×EC-972
P0500 0500 VEH SPEED SEN/CIRC*5 — —×EC-978
P0550 0550 PW ST P SEN/CIRC — —×EC-983
P0605 0605 ECM — —×EC-988

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-779
[QR20(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
*1: 1st trip DTC No. is the same as DTC No.
*2: These numbers are prescribed by ISO 15031-5.
*3: In Diagnostic Test Mode II (Self-diagnostic results), these numbers are controlled by NISSAN.
*4: These are not displayed with GST.
*5: When the fail-safe operations for both self-diagnoses occur at the same time, the MI illuminates.
*6: The trouble shooting for this DTC needs CONSULT-II.
*7: Except for M/T models without ESP/TCS/ABS system.
*8: For M/T models with ESP/TCS/ABS system.
DTC AND 1ST TRIP DTC
The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not reoccur, the 1st trip
DTC will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MI will not
light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MI lights up. In other words,
the DTC is stored in the ECM memory and the MI lights up when the same malfunction occurs in two consec-
P0650 0650 MIL/CIRC — —×EC-991
P0705 0705 PNP SW/CIRC — —×AT- 11 0
P0710 0710 ATF TEMP SEN/CIRC — —×AT- 11 6
P0720 0720 VEH SPD SEN/CIR AT*5 — —×AT- 1 2 2
P0731 0731 A/T 1ST GR FNCTN — —×AT- 1 3 1
P0732 0732 A/T 2ND GR FNCTN — —×AT- 1 3 7
P0733 0733 A/T 3RD GR FNCTN — —×AT- 1 4 3
P0734 0734 A/T 4TH GR FNCTN — —×AT- 1 4 9
P0740 0740 TCC SOLENOID/CIRC — —×AT- 1 5 8
P0745 0745 L/PRESS SOL/CIRC — —×AT- 1 6 3
P0750 0750 SFT SOL A/CIRC — — —AT-170
P0755 0755 SFT SOL B/CIRC — — —AT-175
P1065 1065 ECM BACK UP/CIRC — —×EC-995
P1102 1102 MAF SENSOR — — —EC-999
P 1111 1111 I N T / V T I M V / C I R - B 1 — —×EC-1005
P1121 1121 ETC ACTR — —×EC-1010
P1122 1122 ETC FUNCTION/CIRC — —×EC-1012
P1123 1123 ETC MOT RLY/CIRC — —×EC-1018
P1143 1143 HO2S1 (B1) — —
×*4EC-1023
P1144 1144 HO2S1 (B1) — —
×*4EC-1029
P1146 1146 HO2S2 (B1) — —
×*4EC-1035
P1147 1147 HO2S2 (B1) — —
×*4EC-1042
P1212 1212 TCS/CIRC*8 — —×EC-1049
P1217 1217 ENG OVER TEMP — — —EC-1050
P1610 - P1615 1610 - 1615 NATS MALFUNCTION — —×EC-790
P1705 1705 TP SEN/CIRC A/T — — —AT-180
P1706 1706 P-N POS SW/CIRCUIT — —×EC-1064
P1760 1760 O/R CLTCH SOL/CIRC — —×AT- 1 8 5
P1805 1805 BRAKE SW/CIRCUIT — —×EC-1068
DTC*1
Items
(CONSULT-II screen terms)SRT codeTest value/
Test limit
(GST only)1st trip
DTC*1Reference page
CONSULT-II
GST*2ECM*3

EC-780
[QR20(WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
utive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd
trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or light up the MI during the
1st trip, the DTC and 1st trip DTC are stored in the ECM memory.
Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in EC-788, &#34;
HOW
TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION&#34; .
For malfunctions in which 1st trip DTCs are displayed, refer to EC-778
. These items are required by legal reg-
ulations to continuously monitor the system/component. In addition, the items monitored non-continuously are
also displayed on CONSULT-II.
1st trip DTC is specified in Mode 7 of ISO 15031-5. 1st trip DTC detection occurs without lighting up the MI
and therefore does not warn the driver of a an incident. However, 1st trip DTC detection will not prevent the
vehicle from being tested, for example during Inspection/Maintenance (I/M) tests.
When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame
data as specified in “Work Flow” procedure Step II, refer to EC-800
. Then perform “DTC Confirmation Proce-
dure” or “Overall Function Check” to try to duplicate the malfunction. If the malfunction is duplicated, the item
requires repair.
How to Read DTC and 1st Trip DTC
DTC and 1st trip DTC can be read by the following methods.
With CONSULT-II
With GST
CONSULT-II or GST (Generic Scan Tool) Examples: P0340, P0705, P0750, etc.
These DTCs are prescribed by ISO 15031-5.
(CONSULT-II also displays the malfunctioning component or system.)
No Tools
The number of blinks of the MI in the Diagnostic Test Mode II (Self-Diagnostic Results) indicates the DTC.
Example: 0102, 0340 etc.
These DTCs are controlled by NISSAN.
●1st trip DTC No. is the same as DTC No.
●Output of a DTC indicates a malfunction. However, GST or the Diagnostic Test Mode II do not indi-
cate whether the malfunction is still occurring or has occurred in the past and has returned to nor-
mal. CONSULT-II can identify malfunction status as shown below. Therefore, using CONSULT-II (if
available) is recommended.
A sample of CONSULT-II display for DTC and 1st trip DTC is shown below. DTC or 1st trip DTC of a malfunc-
tion is displayed in SELF-DIAGNOSTIC RESULTS mode of CONSULT-II. Time data indicates how many times
the vehicle was driven after the last detection of a DTC.
If the DTC is being detected currently, the time data will be “0”.
If a 1st trip DTC is stored in the ECM, the time data will be “[1t]”.
FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA
The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant tem-
perature, short term fuel trim, long term fuel trim, engine speed, vehicle speed, base fuel schedule and intake
air temperature at the moment a malfunction is detected.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data.
The data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-II or
GST. The 1st trip freeze frame data can only be displayed on the CONSULT-II screen, not on the GST. For
details, see EC-829
.
Only one set of freeze frame data (either 1st trip freeze frame data or freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority
for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once
PBIB0911E