2003 NISSAN X-TRAIL engine

EC-8
Component Inspection ..........................................584
Removal and Installation ......................................586
HO2S2 .....................................................................587
Component Description ........................................587
CONSULT-II Reference Value in Data Monitor Mode
.587
ECM Terminals and Reference Value ...................587
Wiring Diagram .....................................................588
Diagnostic Procedure ...........................................589
Component Inspection ..........................................590
Removal and Installation ......................................591
IGNITION SIGNAL ..................................................592
Component Description ........................................592
ECM Terminals and Reference Value ...................592
Wiring Diagram .....................................................593
Diagnostic Procedure ...........................................595
Component Inspection ..........................................599
Removal and Installation ......................................600
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE .................................................601
Description ............................................................601
CONSULT-II Reference Value in Data Monitor Mode
.601
ECM Terminals and Reference Value ...................601
Wiring Diagram .....................................................603
Diagnostic Procedure ...........................................604
Component Inspection ..........................................607
Removal and Installation ......................................607
IVT CONTROL SOLENOID VALVE ........................608
Description ............................................................608
CONSULT-II Reference Value in Data Monitor Mode
.608
ECM Terminals and Reference Value ...................609
Wiring Diagram .....................................................610
Diagnostic Procedure ...........................................611
Component Inspection ..........................................613
Removal and Installation ......................................613
PNP SWITCH ..........................................................614
Component Description ........................................614
CONSULT-II Reference Value in Data Monitor Mode
.614
ECM Terminals and Reference Value ...................614
Wiring Diagram .....................................................615
Diagnostic Procedure ...........................................616
INJECTOR CIRCUIT ...............................................618
Component Description ........................................618
CONSULT-II Reference Value in Data Monitor Mode
.618
ECM Terminals and Reference Value ...................618
Wiring Diagram .....................................................619
Diagnostic Procedure ...........................................620
Component Inspection ..........................................622
Removal and Installation ......................................622
START SIGNAL ......................................................623
CONSULT-II Reference Value in Data Monitor Mode
.623
ECM Terminals and Reference Value ...................623Wiring Diagram ..................................................... 624
Diagnostic Procedure ............................................ 625
FUEL PUMP CIRCUIT ............................................. 627
Description ............................................................ 627
CONSULT-II Reference Value in Data Monitor Mode
. 627
ECM Terminals and Reference Value ................... 627
Wiring Diagram ..................................................... 629
Diagnostic Procedure ............................................ 630
Component Inspection .......................................... 632
Removal and Installation ....................................... 633
REFRIGERANT PRESSURE SENSOR .................. 634
Component Description ........................................ 634
ECM Terminals and Reference Value ................... 634
Wiring Diagram ..................................................... 635
Diagnostic Procedure ............................................ 636
Removal and Installation ....................................... 637
ELECTRICAL LOAD SIGNAL ................................ 638
CONSULT-II Reference Value in Data Monitor Mode
. 638
ECM Terminals and Reference Value ................... 638
Wiring Diagram ..................................................... 639
Diagnostic Procedure ............................................ 641
DATA LINK CONNECTOR ...................................... 646
Wiring Diagram ..................................................... 646
EVAPORATIVE EMISSION SYSTEM ..................... 647
Description ............................................................ 647
Component Inspection .......................................... 649
POSITIVE CRANKCASE VENTILATION ................ 650
Description ............................................................ 650
Component Inspection .......................................... 650
SERVICE DATA AND SPECIFICATIONS (SDS) .... 652
Fuel Pressure ........................................................ 652
Idle Speed and Ignition Timing .............................. 652
Calculated Load Value .......................................... 652
Mass Air Flow Sensor ........................................... 652
Intake Air Temperature Sensor ............................. 652
Engine Coolant Temperature Sensor .................... 652
Heated Oxygen Sensor 1 Heater .......................... 652
Heated Oxygen sensor 2 Heater .......................... 652
Crankshaft Position Sensor (POS) ....................... 652
Camshaft Position Sensor (PHASE) ..................... 652
Throttle Control Motor ........................................... 653
Injector .................................................................. 653
Fuel Pump ............................................................. 653
YD
INDEX FOR DTC ..................................................... 654
Alphabetical Index ................................................. 654
DTC No. Index ...................................................... 654
PRECAUTIONS ....................................................... 656
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................... 656
Precautions ........................................................... 656
Wiring Diagrams and Trouble Diagnosis ............... 658

EC-9
C
D
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ECA ENGINE CONTROL SYSTEM ................................ 659
System Diagram ................................................... 659
System Chart ....................................................... 660
Fuel Injection Control System .............................. 660
Fuel Injection Timing Control System ................... 662
Air Conditioning Cut Control ................................. 662
Fuel Cut Control (At No Load & High Engine Speed). 662
Crankcase Ventilation System ............................. 663
BASIC SERVICE PROCEDURE ............................ 664
Fuel Filter ............................................................. 664
Accelerator Pedal Released Position Learning .... 664
Fuel Pressure Relief Valve ................................... 665
ON BOARD DIAGNOSTIC (OBD) SYSTEM .......... 666
DTC and MI Detection Logic ................................ 666
Diagnostic Trouble Code (DTC) ........................... 666
NATS (Nissan Anti-theft System) ......................... 666
Malfunction Indicator (MI) ..................................... 667
TROUBLE DIAGNOSIS .......................................... 669
Trouble Diagnosis Introduction ............................. 669
Basic Inspection ................................................... 672
Symptom Matrix Chart ......................................... 676
Engine Control Component Parts Location .......... 680
Circuit Diagram .................................................... 683
ECM Harness Connector Terminal Layout ........... 685
ECM Terminals And Reference Value .................. 685
CONSULT-II Function .......................................... 691
CONSULT-II Reference Value in Data Monitor Mode
. 696
Major Sensor Reference Graph in Data Monitor
Mode .................................................................... 698
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT ...................................................................... 699
Description ........................................................... 699
Diagnostic Procedure ........................................... 699
POWER SUPPLY CIRCUIT FOR ECM .................. 700
ECM Terminals and Reference Value .................. 700
Wiring Diagram .................................................... 701
Diagnostic Procedure ........................................... 702
Component Inspection ......................................... 705
DTCP0100MASSAIRFLOWSENSOR(MAFS).. 706
Component Description ........................................ 706
CONSULT-II Reference Value in Data Monitor Mode
. 706
ECM Terminals and Reference Value .................. 706
On Board Diagnosis Logic ................................... 707
DTC Confirmation Procedure ............................... 707
Wiring Diagram .................................................... 708
Diagnostic Procedure ........................................... 709
Component Inspection ......................................... 710
Removal and Installation ...................................... 710
DTC P0115 ENGINE COOLANT TEMPERATURE
(ECT) SENSOR (CIRCUIT) ...................................... 711
Description ............................................................ 711
On Board Diagnosis Logic .................................... 711
DTC Confirmation Procedure ................................ 711
Wiring Diagram .................................................... 712
Diagnostic Procedure ........................................... 713Component Inspection ..........................................714
Removal and Installation ......................................714
DTC P0120 ACCELERATOR PEDAL POSITION
SENSOR .................................................................715
Description ............................................................715
CONSULT-II Reference Value in Data Monitor Mode
.715
ECM Terminals and Reference Value ...................715
On Board Diagnosis Logic ....................................716
DTC Confirmation Procedure ...............................716
Wiring Diagram .....................................................717
Diagnostic Procedure ...........................................718
Component Inspection ..........................................721
Removal and Installation ......................................722
DTC P0190 COMMON RAIL FUEL PRESSURE
SENSOR .................................................................723
Description ............................................................723
CONSULT-II Reference Value in Data Monitor Mode
.723
ECM Terminals and Reference Value ...................723
On Board Diagnosis Logic ....................................723
DTC Confirmation Procedure ...............................723
Wiring Diagram .....................................................724
Diagnostic Procedure ...........................................725
Component Inspection ..........................................726
Removal and Installation ......................................726
DTC P0201 - P0204 FUEL INJECTOR ...................727
Description ............................................................727
CONSULT-II Reference Value in Data Monitor Mode
.727
ECM Terminals and Reference Value ...................727
On Board Diagnosis Logic ....................................728
DTC Confirmation Procedure ...............................729
Wiring Diagram .....................................................730
Diagnostic Procedure ...........................................732
Component Inspection ..........................................733
Removal and Installation ......................................733
DTC P0335 CRANKSHAFT POSISTION SENSOR
(TDC) .......................................................................734
Description ............................................................734
CONSULT-II Reference Value in Data Monitor Mode
.734
ECM Terminals and Reference Value ...................734
On Board Diagnosis Logic ....................................735
DTC Confirmation Procedure ...............................735
Wiring Diagram .....................................................736
Diagnostic Procedure ...........................................737
Component Inspection ..........................................737
Removal and Installation ......................................738
DTC P0340 CAMSHAFT POSITION SENSOR ......739
Description ............................................................739
ECM Terminals and Reference Value ...................739
On Board Diagnosis Logic ....................................739
DTC Confirmation Procedure ...............................739
Wiring Diagram .....................................................741
Diagnostic Procedure ...........................................742
Component Inspection ..........................................742
Removal and Installation ......................................743

EC-11
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ECA Diagnostic Procedure ........................................... 812
Component Inspection ......................................... 813
PARK/NEUTRAL POSITION (PNP) SWITCH ........ 814
Description ........................................................... 814
CONSULT-II Reference Value in Data Monitor Mode
. 814
ECM Terminals and Reference Value .................. 814
Wiring Diagram .................................................... 815
Diagnostic Procedure ........................................... 816
START SIGNAL ...................................................... 818
Wiring Diagram .................................................... 818
Diagnostic Procedure ........................................... 819
POWER STEERING OIL PRESSURE SWITCH .... 820
Component Description ........................................ 820
CONSULT-II Reference Value in Data Monitor Mode
. 820
ECM Terminals and Reference Value .................. 820Wiring Diagram .....................................................821
Diagnostic Procedure ...........................................822
Component Inspection ..........................................823
Removal and Installation ......................................823
AIR CONDITIONER CONTROL .............................824
Wiring Diagram .....................................................824
MI & DATA LINK CONNECTORS ...........................825
Wiring Diagram .....................................................825
SERVICE DATA AND SPECIFICATIONS (SDS) ....826
General Specifications ..........................................826
Mass Air Flow Sensor ...........................................826
Engine Coolant Temperature Sensor ...................826
Common Rail Fuel Pressure Sensor ....................826
Crankshaft Position Sensor (TDC) .......................826
Camshaft Position Sensor ....................................826
Glow Plug .............................................................826
EGR Volume Control Valve ..................................826

EC-12
[QR (WITH EURO-OBD)]
INDEX FOR DTC
[QR (WITH EURO-OBD)]INDEX FOR DTCPFP:00024
Alphabetical IndexEBS00B0G
Check if the vehicle is a model with Euro-OBD (E-OBD) system or not by the "Type approval number" on the
identification plate. Refer toGI-45, "
IDENTIFICATION PLATE".
NOTE:
If DTC U1000 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000. Refer to
EC-114
.
Items
(CONSULT-II screen terms)DTC*1
Reference page
CONSULT-II
GST*2ECM*3
APP SEN/CIRCUIT P0121 0121EC-154
A/T 1ST GR FNCTN P0731 0731AT-151
A/T 2ND GR FNCTN P0732 0732AT-158
A/T 3RD GR FNCTN P0733 0733AT-165
A/T 4TH GR FNCTN P0734 0734AT-172
ATF TEMP SEN/CIRC P0710 0710AT-136
BRAKE SW/CIRCUIT P1805 1805EC-329
CAN COMM CIRCUIT*7 U1000 1000*6EC-114
CKP SEN/CIRCUIT P0335 0335EC-217
CMP SEN/CIRCUIT P0340 0340EC-223
CYL 1 MISFIRE P0301 0301EC-206
CYL 2 MISFIRE P0302 0302EC-206
CYL 3 MISFIRE P0303 0303EC-206
CYL 4 MISFIRE P0304 0304EC-206
ECM P0605 0605EC-249
ECM BACK UP/CIRC P1065 1065EC-256
ECT SEN/CIRCUIT*5 P0117 0117EC-141
ECT SEN/CIRCUIT*5 P0118 0118EC-141
ENG OVER TEMP P1217 1217EC-311
ENGINE SPEED SIG P0725 0725AT-147
E T C A C T R P 11 2 1 11 2 1EC-271
ETC FUNCTION/CIRC P1122 1122EC-273
ETC MOT RLY/CIRC P1123 1123EC-279
FUEL SYS-LEAN-B1 P0171 0171EC-194
FUEL SYS-RICH-B1 P0172 0172EC-200
HO2S1 (B1) P0132 0132EC-160
HO2S1 (B1) P0133 0133EC-166
HO2S1 (B1) P0134 0134EC-174
HO2S1 (B1) P1143 1143EC-284
HO2S1 (B1) P1144 1144EC-290
HO2S1 HTR (B1) P0031 0031EC-120
HO2S1 HTR (B1) P0032 0032EC-120
HO2S2 (B1) P0138 0138EC-181
HO2S2 (B1) P0139 0139EC-187
HO2S2 (B1) P1146 1146EC-296
HO2S2 (B1) P1147 1147EC-303

INDEX FOR DTC
EC-13
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
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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: When engine is running.
*5: When the fail-safe operation occurs, 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.
*9: When the fail-safe operations for both self-diagnoses occur at the same time, the MI illuminates.HO2S2 HTR (B1) P0037 0037EC-125
HO2S2 HTR (B1) P0038 0038EC-125
IAT SEN/CIRCUIT P0112 0112EC-136
IAT SEN/CIRCUIT P0113 0113EC-136
INT/V TIM CONT-B1 P0011 0011EC-117
I N T / V T IM V / C I R - B 1 P 1111 1111EC-266
KNOCK SEN/CIRC-B1 P0327 0327EC-212
KNOCK SEN/CIRC-B1 P0328 0328EC-212
L/PRESS SOL/CIRC P0745 0745AT- 1 8 6
MAF SEN/CIRCUIT*5 P0102 0102EC-130
MAF SEN/CIRCUIT*5 P0103 0103EC-130
MAF SENSOR P1102 1102EC-260
MIL/CIRC P0650 0650EC-252
MULTI CYL MISFIRE P0300 0300EC-206
NATS MALFUNCTION P1610 - P1615 1610 - 1615EC-48
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.No DTC Flashing*4EC-49
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000 —
O/R CLTCH SOL/CIRC P1760 1760AT- 2 0 8
P-N POS SW/CIRCUIT P1706 1706EC-325
PNP SW/CIRC P0705 0705AT- 1 3 0
PURG VOLUME CONT/V P0444 0444EC-233
PURG VOLUME CONT/V P0445 0445EC-233
PW ST P SEN/CIRC P0550 0550EC-244
SFT SOL A/CIRC*5 P0750 0750AT- 1 9 3
SFT SOL B/CIRC*5 P0755 0755AT- 1 9 8
TCC SOLENOID/CIRC P0740 0740AT- 1 8 1
TCS/CIRC*8 P1212 1212EC-310
THRTL POS SEN/CIRC*5 P0120 0120EC-146
TP SEN/CIRC A/T*5 P1705 1705AT- 2 0 3
TW CATALYST SYS-B1 P0420 0420EC-229
VEH SPD SEN/CIR AT*9 P0720 0720AT- 1 4 2
VEH SPEED SEN/CIRC*9 P0500 0500EC-239
Items
(CONSULT-II screen terms)DTC*1
Reference page
CONSULT-II
GST*2ECM*3

INDEX FOR DTC
EC-15
[QR (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: When engine is running.
*5: When the fail-safe operation occurs, 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.
*9: When the fail-safe operations for both self-diagnoses occur at the same time, the MI illuminates.P0445 0445 PURG VOLUME CONT/VEC-233
P0500 0500 VEH SPEED SEN/CIRC*9EC-239
P0550 0550 PW ST P SEN/CIRCEC-244
P0605 0605 ECMEC-249
P0650 0650 MIL/CIRCEC-252
P0705 0705 PNP SW/CIRCAT- 1 3 0
P0710 0710 ATF TEMP SEN/CIRCAT- 1 3 6
P0720 0720 VEH SPD SEN/CIR AT*9AT- 1 4 2
P0725 0725 ENGINE SPEED SIGAT- 1 4 7
P0731 0731 A/T 1ST GR FNCTNAT- 1 5 1
P0732 0732 A/T 2ND GR FNCTNAT- 1 5 8
P0733 0733 A/T 3RD GR FNCTNAT- 1 6 5
P0734 0734 A/T 4TH GR FNCTNAT- 1 7 2
P0740 0740 TCC SOLENOID/CIRCAT- 1 8 1
P0745 0745 L/PRESS SOL/CIRCAT- 1 8 6
P0750 0750 SFT SOL A/CIRC*5AT- 1 9 3
P0755 0755 SFT SOL B/CIRC*5AT- 1 9 8
P1065 1065 ECM BACK UP/CIRCEC-256
P1102 1102 MAF SENSOREC-260
P 1111 1111 IN T / V T I M V / C I R - B 1EC-266
P1121 1121 ETC ACTREC-271
P1122 1122 ETC FUNCTION/CIRCEC-273
P1123 1123 ETC MOT RLY/CIRCEC-279
P1143 1143 HO2S1 (B1)EC-284
P1144 1144 HO2S1 (B1)EC-290
P1146 1146 HO2S2 (B1)EC-296
P1147 1147 HO2S2 (B1)EC-303
P1212 1212 TCS/CIRC*8EC-310
P1217 1217 ENG OVER TEMPEC-311
P1610 - P1615 1610 - 1615 NATS MALFUNCTIONEC-48
P1705 1705 TP SEN/CIRC A/T*5AT- 2 0 3
P1706 1706 P-N POS SW/CIRCUITEC-325
P1760 1760 O/R CLTCH SOL/CIRCAT- 2 0 8
P1805 1805 BRAKE SW/CIRCUITEC-329
DTC*1
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*2ECM*3

EC-16
[QR (WITH EURO-OBD)]
PRECAUTIONS
PRECAUTIONS
PFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EBS00B0I
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WAR NIN G:
lTo avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
lImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
lDo not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow harness connectors.
On Board Diagnostic (OBD) System of Engine and A/TEBS00B0J
The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) to warn the driver of
a malfunction causing emission deterioration.
CAUTION:
lBe sure to turn the ignition switch OFF and disconnect the negative battery terminal before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves,
etc. will cause the MI to light up.
lBe sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
lCertain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer toPG-70, "
HAR-
NESS CONNECTOR".
lBe sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MI to light up due to the short circuit.
lBe sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MI to light up due to the malfunction of the fuel injection system, etc.
lBe sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
PrecautionEBS00B0K
lAlways use a 12 volt battery as power source.
lDo not attempt to disconnect battery cables while engine is
running.
lBefore connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative
battery terminal. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned off.
lBefore removing parts, turn ignition switch OFF and then
disconnect battery ground cable.
SEF289H

PRECAUTIONS
EC-17
[QR (WITH EURO-OBD)]
C
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EC
lDo not disassemble ECM.
lIf a battery terminal is disconnected, the memory will return
to the ECM value.
The ECM will now start to self-control at its initial value.
Engine operation can vary slightly when the terminal is dis-
connected. However, this is not an indication of a problem.
Do not replace parts because of a slight variation.
lWhen connecting ECM harness connector, fasten it
securely with a lever as far as it will go as shown at right.
lWhen connecting or disconnecting pin connectors into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.
lSecurely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in coil and condenser, thus resulting in
damage to ICs.
lKeep engine control system harness at least 10 cm (4 in)
away from adjacent harness, to prevent engine control sys-
tem malfunctions due to receiving external noise, degraded
operation of ICs, etc.
lKeep engine control system parts and harness dry.
lBefore replacing ECM, perform “ECM Terminals and Refer-
ence Value” inspection and make sure ECM functions prop-
erly. Refer toEC-79
.
lHandle mass air flow sensor carefully to avoid damage.
lDo not disassemble mass air flow sensor.
lDo not clean mass air flow sensor with any type of deter-
gent.
lDo not disassemble electric throttle control actuator.
lEven a slight leak in the air intake system can cause seri-
ous problems.
lDo not shock or jar the camshaft position sensor (PHASE),
crankshaft position sensor (POS).
SEF707Y
SEF908W
PBIB0090E
MEF040D