NISSAN X-TRAIL 2003 Service Repair Manual

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-893
[YD (WITH EURO-OBD)]
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FUEL PUMP P0089××EC-956
FUEL LEAK P0093××EC-959
MAF SENSOR P0101××EC-963
MAF SEN/CIRCUIT P0102××EC-970
MAF SEN/CIRCUIT P0103××EC-970
IAT SEN/CIRCUIT P0112××EC-976
IAT SEN/CIRCUIT P0113××EC-976
ECT SEN/CIRCUIT P0117××EC-981
ECT SEN/CIRCUIT P0118××EC-981
APP SEN 1/CIRCUIT P0122 — —EC-987
APP SEN 1/CIRCUIT P0123 — —EC-987
FUEL TEMP SEN/CIRC P0182××EC-993
FUEL TEMP SEN/CIRC P0183××EC-993
FRP SEN/CIRC P0192××EC-997
FRP SEN/CIRC P0193××EC-997
INJECTOR P0200××EC-1003
CYL1 INJECTOR P0201××EC-1005
CYL2 INJECTOR P0202××EC-1005
CYL3 INJECTOR P0203××EC-1005
CYL4 INJECTOR P0204××EC-1005
ENG OVER TEMP P0217 —×EC-1011
APP SEN 2/CIRCUIT P0222 — —EC-1025
APP SEN 2/CIRCUIT P0223 — —EC-1025
TC SYSTEM P0234 — —EC-1031
TC BOOST SEN/CIRC P0237××EC-1038
TC BOOST SEN/CIRC P0238××EC-1038
CKP SEN/CIRCUIT P0335××EC-1044
CKP SENSOR P0336××EC-1050
CMP SEN/CIRCUIT P0340××EC-1056
CMP SENSOR P0341××EC-1062
GLOW RELAY P0380××EC-1069
EGR SYSTEM P0401××EC-1073
EGR VALVE P0404××EC-1080
BATTERY VOLTAGE P0563 — —EC-1087
ECM P0605××EC-1089
ECM P0606××EC-1091
FUEL PUMP/CIRC P0628××EC-1093
FUEL PUMP/CIRC P0629××EC-1093
SENSOR PWR/CIRC1 P0642××EC-1098
SENSOR PWR/CIRC1 P0643××EC-1098
SENSOR PWR/CIRC2 P0652××EC-1104
SENSOR PWR/CIRC2 P0653××EC-1104
ECM RELAY P0686 — —E C - 111 0
Items
(CONSULT-II screen item) DTC*1 *2
(CONSULT-II, GST )1st/2nd
trip DTCMI lighting
upReference page

EC-894
[YD (WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM

*1: 1st trip DTC No. and 2nd trip DTC No. are the same as DTC No.
*2: This number is prescribed by ISO 15031-6.
DTC AND 1ST/2ND TRIP DTC
The number of 1st/2nd trip DTC is the same as the number of DTC.
When a malfunction is detected during 1st trip, 1st trip DTC is stored in the ECM memory. MI does not illumi-
nate at this time. When the same malfunction is detected in the next trip (2nd trip), 2nd trip DTC is stored in the
ECM memory and 1st trip DTC is cleared from the ECM memory. MI does not illuminate at this time. In addi-
tion, DTC is stored in the ECM memory and MI lights up when the same malfunction is detected during the fol-
lowing consecutive trip (3rd trip).
The procedure for erasing DTC, 1st trip DTC, and 2nd trip DTC from the ECM memory is described in EC-895,
"HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" .
For malfunctions in which 1st/2nd trip DTC are displayed, Refer to EC-892, "
Emission-related Diagnostic Infor-
mation" .
1st/2nd trip DTC is specified in Mode 7 of ISO15031-5. 1st/2nd trip DTC detection occurs without lighting up
MI and therefore does not warn the driver of a malfunction.
When 1st/2nd trip DTC is detected, check, print out or write down, and erase 1st/2nd trip DTC as specified
with step II of Work Flow, refer to EC-902, "
WORK FLOW" . Then perform DTC Confirmation Procedure or
Overall Function Check to try to duplicate the malfunction. If the malfunction is duplicated, it is necessary to
investigate the cause again.
How to Read DTC and 1st/2nd Trip DTC
DTC and 1st/2nd trip DTC can be read by the following procedures.
With CONSULT-II
TCS C/U FUNCTN P1211 — —E C - 111 3
TCS/CIRC P1212 — —E C - 111 4
INJ ADJ RES/CIRC1 P1260××E C - 111 5
INJ ADJ RES/CIRC1 P1261××E C - 111 5
INJ ADJ RES/CIRC2 P1262××E C - 111 5
INJ ADJ RES/CIRC2 P1263××E C - 111 5
INJ ADJ RES/CIRC3 P1264××E C - 111 5
INJ ADJ RES/CIRC3 P1265××E C - 111 5
INJ ADJ RES/CIRC4 P1266××E C - 111 5
INJ ADJ RES/CIRC4 P1267××E C - 111 5
INJECTOR 1 P1268 — —EC-1121
INJECTOR 2 P1269 — —EC-1121
INJECTOR 3 P1270 — —EC-1121
INJECTOR 4 P1271 — —EC-1121
FRP RELIEF VALVE P1272××EC-1127
FUEL PUMP P1273××EC-1134
FUEL PUMP P1274 —×EC-1139
FUEL PUMP P1275 —×EC-1144
NATS MALFUNTION P1610 - P1617 — —EC-896
APP SENSOR P2135 — —EC-1149
INJ PWR/CIRC P2146××EC-1155
INJECTOR/CIRC P2147××EC-1160
INJECTOR/CIRC P2148××EC-1160
INJ PWR/CIRC P2149××EC-1155
BARO SEN/CIRC P2228××EC-1167
BARO SEN/CIRC P2229××EC-1167
Items
(CONSULT-II screen item) DTC*1 *2
(CONSULT-II, GST )1st/2nd
trip DTCMI lighting
upReference page

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-895
[YD (WITH EURO-OBD)]
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With GST
CONSULT-II or GST (Generic Scan Tool): Examples: P0117, P0335, P1260, etc.
These numbers are prescribed by ISO 15031-6.
(CONSULT-II also displays the malfunctioning parts and systems.)
A sample of CONSULT-II display for DTC and 1st/2nd trip DTC is
shown in the figure. DTC and 1st/2nd trip DTC are displayed in the
“SELF-DIAG RESULTS” mode of CONSULT-II.
“TIME” data shows how many times the vehicle was driven after the
last detection of DTC or 1st/2nd trip DTC. When DTC or 1st/2nd trip
DTC has been detected currently, “TIME” becomes “0”.

CONSULT-II displays for DTC and 1st/2nd trip DTC become the
same.

The output of a DTC indicates a malfunction. However, GST
does not indicate whether the malfunction is still occurring or
has occurred in the past and has returned to normal. CONSULT-
II can identify the malfunction status. Therefore the use of CON-
SULT-II (If available) is recommended.
FREEZE FRAME DATA
ECM records driving conditions such as calculated load value, engine coolant temperature, engine speed,
vehicle speed, and intake manifold pressure at the moment a malfunction is detected.
The data stored together with DTC is called Freeze Frame Data, and is displayed on CONSULT-II or GST.
When 1st/2nd trip DTC is detected, Freeze Frame Data is not recorded.
Only a set of Freeze Frame Data can be stored in the ECM memory. When ECM records Freeze Frame Data,
and another Freeze Frame Data is generated after that, the first (original) Freeze Frame Data is not updated in
ECM and it remains.
When the DTC is erased from ECM memory, Freeze Frame Data is erased with DTC. The procedure for eras-
ing DTC is described in EC-895, "
How to Erase DTC" .
HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION
How to Erase DTC
With CONSULT-II
The emission related diagnostic information in the ECM can be erased by selecting “ERASE” in the “SELF-
DIAG RESULTS” mode with CONSULT-II.
1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 5
seconds and then turn it ON (engine stopped) again.
2. Touch “ENGINE”.
3. Touch “SELF-DIAG RESULTS”.
4. Touch “ERASE”. (The DTC in the ECM will be erased.)
PBIB2022E
PBIB2452E

EC-896
[YD (WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM

With GST
The emission related diagnostic information in the ECM can be erased by selecting MODE 4 with GST.
1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 5
seconds and then turn it ON (engine stopped) again.
2. Select MODE 4 with GST (Generic Scan Tool).

If the battery is disconnected, the emission-related diagnostic information will be lost within 24
hours.

The following data are cleared when the ECM memory is erased.
–Diagnostic trouble codes
–1st trip diagnostic trouble codes
–2nd trip diagnostic trouble codes
–Freeze frame data
Actual work procedures are explained using a DTC as an example. Be careful so that not only the DTC, but all
of the data listed above, are cleared from the ECM memory during work procedures.
NATS (Nissan Anti-theft System)EBS01177

If the security indicator lights up with the ignition switch in
the ON position or "NATS MALFUNCTION" is displayed on
"SELF-DIAG RESULTS" screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card.
Refer to NATS (Nissan Anti-Theft System) in BL section.

Confirm no self-diagnostic results of NATS is displayed
before touching "ERASE" in "SELF-DAIG RESULTS" mode
with CONSULT-II.

When replacing ECM, initialization of NATS system and reg-
istration of all NATS ignition key IDs must be carried out
with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle owner.
Regarding the procedure of NATS initialization and NATS ignition key ID registration, refer to CON-
SULT-II operation manual, NATS.
Malfunction Indicator (MI)EBS01178
DESCRIPTION
The MI is located on the instrument panel.
1. The MI will light up when the ignition switch is turned ON without
the engine running. This is a bulb check.

If the MI does not light up, refer to DI-33, "WARNING LAMPS"
or see EC-1202 .
2. When the engine is started, the MI should go off.
If the MI remains on, the on board diagnostic system has
detected an engine system malfunction.
On Board Diagnostic System Function
The on board diagnostic system has the following two functions.
SEF543X
SAT652J

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-897
[YD (WITH EURO-OBD)]
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Diagnostic Test Mode I - Bulb Check
In this mode, the MI on the instrument panel should stay ON. If it remains OFF, check the bulb. Refer to DI-33,
"WARNING LAMPS" or see EC-1202 .
Diagnostic Test Mode I - Malfunction Warning
Diagnostic Test
ModeKEY and ENG.
Statu sFunction Explanation of Function
Mode I Ignition switch in
ON position
Engine stoppedBULB CHECK This function checks the MI bulb for damage (blown, open
circuit, etc.).
If the MI does not come on, check MI circuit. (See EC-
1202, "MI & DATA LINK CONNECTORS" .)
Engine running MALFUNCTION
WARNINGThis is a usual driving condition. When ECM detects a mal-
function, the MI will light up to inform the driver that a mal-
function has been detected.
MI Condition
ON When the malfunction is detected or the ECM's CPU is malfunctioning.
OFF No malfunction.

EC-898
[YD (WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM

OBD System Operation ChartEBS011UM
RELATIONSHIP BETWEEN MI, 1ST/2ND TRIP DTC, DTC, AND DETECTABLE ITEMS

When the malfunction is detected for the first time, 1st trip DTC is stored in the ECM memory.

When the same malfunction is detected during 2nd consecutive trip, 2nd trip DTC is stored and 1st trip
DTC is cleared.

When the same malfunction is detected during 3rd consecutive trip, DTC and Freeze Frame Data are
stored and MI illuminates. Refer to EC-892, "
Three Trip Detection Logic and One Trip Detection Logic" for
details.1st/2nd trip DTC are cleared from the ECM memory.

MI will go off after the vehicle is driven 3 consecutive times with no malfunction (driving pattern A).

1st/2nd trip DTC, DTC, and Freeze Frame Data will be stored until the vehicle is driven 41 times (driving
pattern B) without the same malfunction recurring. “TIME” data displayed in the “SELF-DIAG RESULTS”
mode of CONSULT-II shows the number of times the vehicle is driven without the same malfunction recur-
ring.
SUMMARY CHART
Refer to EC-900 for details of pattern A and B.Items Trip Counter Driving Pattern
MI (goes off) 3 2 A
DTC, Freeze Frame Data (clear) 41 40 B
1st/2nd Trip DTC (clear) 41 40 B

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-899
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RELATIONSHIP BETWEEN MI, DTC, 1ST/ 2NDTRIP DTC AND DRIVING PATTERNS
*1: CONSULT-II displays for DTC and
1st/2nd trip DTC become the same.*2: 1st/2nd trip DTC becomes the same
display in mode7 of GST.*3: When the same malfunction is
detected in three consecutive trips,
MI will light up.
*4: MI will go off after vehicle is driven 3
times (pattern A) without any mal-
functions.*5: When the malfunction is detected for
the first time, 1st trip DTC is stored in
the ECM memory.*6: When the same malfunction is
detected during 2nd consecutive trip,
2nd trip DTC is stored and 1st trip
DTC is cleared.
*7: When the same malfunction is
detected during 3rd consecutive trip,
DTC and Freeze Frame Data are
stored.*8: The DTC and the freeze frame data
will not be displayed any longer after
vehicle is driven 41 times (pattern B)
without the same malfunction.
PBIB2048E

EC-900
[YD (WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM


Driving pattern A means the vehicle operation as follows:
Engine speed should go over 500 rpm at least 5 seconds and the DTC Confirmation Procedure is performed.

The A counter will be cleared when the same malfunction is detected.

The A counter will be counted up when the same malfunction is not detected.

The MI will go off when the A counter reaches 3.

Driving pattern B means the vehicle operation as follows:
Driving pattern A and (1)-(3) are satisfied.

The B counter will be cleared when the same malfunction is detected.

The B counter will be counted up when the same malfunction is not detected.

The DTC will not be displayed after the B counter reaches 40.
PBIB2049E

TROUBLE DIAGNOSIS
EC-901
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TROUBLE DIAGNOSISPFP:00004
Trouble Diagnosis IntroductionEBS01179
INTRODUCTION
The engine has an ECM to control major systems such as fuel injec-
tion control, fuel injection timing control, glow control system, etc.
The ECM accepts input signals from sensors and instantly actuators.
It is essential that both input and output signals are proper and sta-
ble. At the same time, it is important that there are no malfunctions
such as vacuum leaks, or other malfunctions with the engine.
It is much more difficult to diagnose a malfunction that occurs inter-
mittently rather than continuously. Most intermittent malfunctions are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.
A visual check only may not find the cause of the incidents. A road
test with CONSULT-II or a circuit tester connected should be per-
formed. Follow the EC-902, "
WORK FLOW" .
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such incidents, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A Diagnostic Worksheet like the example
on next page should be used.
Start your diagnosis by looking for conventional incidents first. This
will help troubleshoot driveability incidents on an electronically con-
trolled engine vehicle.
MEF036D
SEF233G
SEF234G

EC-902
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS

WORK FLOW
*1 If time data of “SELF-DIAG
RESULTS” is other than “0”, per-
form EC-936, "
TROUBLE DIAGNO-
SIS FOR INTERMITTENT
INCIDENT" .*2 If the incident cannot be verified, per-
form EC-936, "
TROUBLE DIAGNO-
SIS FOR INTERMITTENT
INCIDENT" .*3 If the on board diagnostic system
cannot be performed, check main
power supply and ground circuit.
Refer to EC-937, "MAIN POWER
SUPPLY AND GROUND CIRCUIT" .
*4 If malfunctioning part cannot be
detected, perform EC-936, "
TROU-
BLE DIAGNOSIS FOR INTERMIT-
TENT INCIDENT" .
PBIB2047E