2003 NISSAN X-TRAIL Seat heater

ATC-122
DUCTS AND GRILLES
Foot Duct
EJS000V5
1. Remove the heater & cooling unit. Refer toATC-115, "HEATER
&COOLING UNIT ASSEMBLY".
2. Remove the foot duct.
Floor ductEJS000V6
1. Remove the front seats.
2. Remove the instrument lower center panel.
3. Remove the front floor duct.
4. Peel back the floor trim to a point where the floor duct is visible.
5. Remove the mounting screw and clip from the rear floor duct.
6. Remove the rear floor duct.
RJIA0069E
RJIA0070E
RJIA0071E

EC-5
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ECA DTC P1805 BRAKE SWITCH ................................ 329
Description ........................................................... 329
CONSULT-II Reference Value in Data Monitor Mode
. 329
ECM Terminals and Reference Value .................. 329
On Board Diagnosis Logic ................................... 329
DTC Confirmation Procedure ............................... 329
Wiring Diagram .................................................... 330
Diagnostic Procedure ........................................... 331
Component Inspection ......................................... 332
IGNITION SIGNAL .................................................. 334
Component Description ........................................ 334
ECM Terminals and Reference Value .................. 334
Wiring Diagram .................................................... 335
Diagnostic Procedure ........................................... 337
Component Inspection ......................................... 341
Removal and Installation ...................................... 342
INJECTOR CIRCUIT ............................................... 343
Component Description ........................................ 343
CONSULT-II Reference Value in Data Monitor Mode
. 343
ECM Terminals and Reference Value .................. 343
Wiring Diagram .................................................... 344
Diagnostic Procedure ........................................... 345
Component Inspection ......................................... 347
Removal and Installation ...................................... 347
START SIGNAL ...................................................... 348
CONSULT-II Reference Value in Data Monitor Mode
. 348
ECM Terminals and Reference Value .................. 348
Wiring Diagram .................................................... 349
Diagnostic Procedure ........................................... 350
FUEL PUMP CIRCUIT ............................................ 352
Description ........................................................... 352
CONSULT-II Reference Value in Data Monitor Mode
. 352
ECM Terminals and Reference Value .................. 352
Wiring Diagram .................................................... 354
Diagnostic Procedure ........................................... 355
Component Inspection ......................................... 357
Removal and Installation ...................................... 358
REFRIGERANT PRESSURE SENSOR ................. 359
Component Description ........................................ 359
ECM Terminals and Reference Value .................. 359
Wiring Diagram .................................................... 360
Diagnostic Procedure ........................................... 361
Removal and Installation ...................................... 362
ELECTRICAL LOAD SIGNAL ................................ 363
CONSULT-II Reference Value in Data Monitor Mode
. 363
ECM Terminals and Reference Value .................. 363
Wiring Diagram .................................................... 364
Diagnostic Procedure ........................................... 366
DATA LINK CONNECTOR ..................................... 371
Wiring Diagram .................................................... 371
EVAPORATIVE EMISSION SYSTEM ..................... 372
Description ........................................................... 372
Component Inspection ......................................... 374POSITIVE CRANKCASE VENTILATION ...............375
Description ............................................................375
Component Inspection ..........................................375
SERVICE DATA AND SPECIFICATIONS (SDS) ....377
Fuel Pressure .......................................................377
Idle Speed and Ignition Timing .............................377
Calculated Load Value ..........................................377
Mass Air Flow Sensor ...........................................377
Intake Air Temperature Sensor .............................377
Engine Coolant Temperature Sensor ...................377
Heated Oxygen Sensor 1 Heater .........................377
Heated Oxygen sensor 2 Heater ..........................377
Crankshaft Position Sensor (POS) .......................377
Camshaft Position Sensor (PHASE) ....................377
Throttle Control Motor ...........................................378
Injector ..................................................................378
Fuel Pump ............................................................378
QR (WITHOUT EURO-OBD)
INDEX FOR DTC .....................................................379
Alphabetical Index ................................................379
DTC No. Index ......................................................380
PRECAUTIONS ......................................................381
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ...............................................................381
On Board Diagnostic (OBD) System of Engine and
A/T ........................................................................381
Precaution ............................................................381
Wiring Diagrams and Trouble Diagnosis ..............384
PREPARATION .......................................................385
Special Service Tools ...........................................385
Commercial Service Tools ....................................385
ENGINE CONTROL SYSTEM ................................387
System Diagram ...................................................387
Vacuum Hose Drawing .........................................388
System Chart ........................................................389
Multiport Fuel Injection (MFI) System ...................389
Electronic Ignition (EI) System .............................392
Air Conditioning Cut Control .................................392
Fuel Cut Control (at No Load and High Engine
Speed) ..................................................................393
CAN communication .............................................393
BASIC SERVICE PROCEDURE .............................395
Idle Speed and Ignition Timing Check ..................395
Throttle Valve Closed Position Learning ...............396
Accelerator Pedal Released Position Learning ....396
Idle Air Volume Learning ......................................396
Fuel Pressure Check ............................................399
ON BOARD DIAGNOSTIC (OBD) SYSTEM ..........401
Introduction ...........................................................401
Two Trip Detection Logic ......................................401
Emission-related Diagnostic Information ..............401
NATS (Nissan Anti-theft System) .........................403
Malfunction Indicator (MI) .....................................404
TROUBLE DIAGNOSIS ..........................................407
Trouble Diagnosis Introduction .............................407

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

IDX-5
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IDX
ALPHABETICAL INDEX
Front washer ......................................................WW-4
Front wiper .........................................................WW-4
FTS - Wiring diagram ......................................EC-752
Fuel check valve ..............................................EC-372
Fuel cut control (at no load high engine speed)EC-28,
EC-393
,EC-662
Fuel filler lid ........................................................BL-64
Fuel filter ..........................................................EC-664
Fuel filter replacement(QR20DE) .........................FL-4
Fuel filter replacement(YD22DDTi) .......FL-15,MA-30
Fuel gauge ..................................................DI-4,DI-22
Fuel injection control system ...........................EC-660
Fuel injection system .........................EC-194,EC-200
Fuel injector .....................................................EC-727
Fuel injector adjustment resistor ......................EC-777
Fuel injector and fuel tube(QR20DE) ................EM-29
Fuel injector and fuel tube(YD22DDTi) ............EM-135
Fuel leak ..........................................................EC-781
Fuel line inspection(QR20DE) .................FL-3,MA-23
Fuel line inspection(YD22DDTi) ............FL-14,MA-30
Fuel pressure check ............................EC-34,EC-399
Fuel pressure release ..........................EC-34,EC-399
Fuel pressure relief valve ................................EC-665
Fuel pump ..........................................EC-352,EC-627
Fuel pump and gauge(QR20DE) ..........................FL-4
Fuel system(QR20DE) .........................................FL-3
Fuel system(YD22DDTi) .....................................FL-14
Fuel tank(QR20DE) ..............................................FL-9
Fuel tank(YD22DDTi) .........................................FL-21
Fuel temperature sensor .................................EC-751
Fuse ...................................................................PG-12
Fuse and fusible link box ...................................PG-77
Fusible link .........................................................PG-12
G
Gear components (M/T) .......................MT-19
,MT-24
Generator ..........................................................SC-12
Generator - See Alternator ................................SC-12
Generic scan tool (GST) ....................................EC-96
Glass ..................................................GW-41,GW-43
GLOW - Wiring diagram ..................................EC-797
Glow plug .........................................................EC-796
Glow plug(YD22DDTi) .....................................EM-130
Glow relay ........................................................EC-796
Grease ...............................................................MA-17
Grille - See Exterior .............................................EI-11
Ground distribution ............................................PG-13
G-sensor .............................................................TF-50
H
H/AIM - Wiring diagram ......................................LT-15
H/LAMP - Wiring diagram ...........................LT-4,LT-5
H/MIRROR - Wiring diagram ............................GW-10
Harness connector ............................................PG-70
Harness layout ...................................................PG-29
Headlamp .............................................................LT-4
Headlamp aiming control ....................................LT-15
Headlamp leveler - See Headlamp aiming control .......
LT-15
Headlamp washer ............................................WW-19
Headlining - See Roof trim ..................................EI-29
Heated oxygen sensor 1 ....EC-160,EC-166,EC-174,
EC-284
,EC-290,EC-490,EC-581
Heated oxygen sensor 1 heater .........EC-120,EC-568
Heated oxygen sensor 2 ....EC-181,EC-187,EC-296,
EC-303
,EC-587
Heated oxygen sensor 2 heater .........EC-125,EC-573
Heated seat ...............................................SE-3,SE-5
HEATER - Wiring diagram ................................MTC-6
Heater and cooling unit (Heater core) ............ATC-115
Heater mirror .....................................................GW-10
Heater system - Wiring diagram .......................MTC-6
Heater unit (heater core) ..ATC-120,MTC-23,MTC-26
HFC134a (R134a) system precaution ...............ATC-4
HFC134a (R134a) system service procedureATC-123
HFC134a (R134a) system service tools ..........ATC-12
HFC134a system service equipment precautionATC-8
HO2S1 - Wiring diaram ......EC-122,EC-162,EC-169,
EC-177
,EC-492
HO2S2 - Wiring diagram ....EC-183,EC-190,EC-299,
EC-306
HO2S2H - Wiring diagram ...............................EC-127
Hood ....................................................................BL-4
Horn .................................................................WW-23
HORN - Wiring diagram ...................................WW-23
How to erase DTC ...........................................EC-666
HowtoeraseDTCforOBDsystem .....EC-46,EC-402
I
IATS - Wiring diagram .....................................EC-138
IATSEN - Wiring diagram ................................EC-578
Identification .....................................................ATC-10
Idle air volume learning ........................EC-31,EC-396
Idle speed .............................EC-64,EC-412,EC-672
IGN/SG - Wiring diagram .................................EC-335
Ignition coil .........................................EC-334,EC-592
Ignition coil(QR20DE) .......................................EM-27
Ignition control system .......................EC-334,EC-592
Ignition timing .......................................EC-64,EC-412
IGNSYS - Wiring diagram ................................EC-593
ILL - Wiring diagram ...........................................LT-45
Illumination ..........................................................LT-45
In vehicle sensor ...............ATC-95,ATC-97,ATC-106
INJECT - Wiring diagram ....EC-344,EC-619,EC-730
Injection nozzle(YD22DDTi) ...........................EM-135
Injector ...............................................EC-343,EC-618
Input shaft (FF M/T) ..............................MT-19,MT-24
Instrument panel ...................................................IP-3
INT/L - Wiring diagram ........................................LT-65
Intake air temparature sensor ............EC-136,EC-577
Intake door control linkage adjustment ............ATC-66
Intake door motorATC-64,ATC-112,MTC-10,MTC-22
Intake manifold(QR20DE) .................................EM-17

IP-1
INSTRUMENT PANEL
IBODY
CONTENTS
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SECTION
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IP
INSTRUMENT PANEL
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
Precautions .............................................................. 2
INSTRUMENT PANEL ASSEMBLY ........................... 3
Component Parts Drawing ....................................... 3
Removal and Installation .......................................... 5
TABLE OF WORK ITEM ....................................... 5
FRONT SPEAKER GRILLE .................................. 6
INSTRUMENT FINISHER ..................................... 6
CUP HOLDER ....................................................... 6
CLUSTER LID A ................................................... 6
COMBINATION METER ....................................... 6
GPS ANTENNA .................................................... 6
POCKET ............................................................... 6
STEERING COLUMN COVER ............................. 6
INSTRUMENT LOWER DRIVER PANEL ............. 7
MIRROR CONTROL SWITCH .............................. 7CLUSTER LID C ................................................... 7
AUDIO UNIT AND POCKET ................................. 7
CLUSTER LID FINISHER ..................................... 7
A/T OR M/T FINISHER ......................................... 8
CENTER CONSOLE ............................................. 8
CD AUTO–CHANGER AND POCKET .................. 8
HEATER CONTROL FINISHER ............................ 8
HEATER CONTROLLER ....................................... 8
LOWER INSTRUMENT COVER ........................... 8
INSTRUMENT LOWER CENTER PANEL ............ 8
GLOVE BOX ......................................................... 9
LOWER INSTRUMENT PANEL ............................ 9
GLOVE BOX COVER ............................................ 9
FRONT PASSENGER AIR BAG MODULE ........... 9
INSTRUMENT MASK ............................................ 9
FRONT PILLAR GARNISH ................................... 9
INSTRUMENT PANEL .......................................... 9
Disassembly and Assembly .................................... 10
CONSOLE BOX ASSEMBLY .............................. 10

ILLUMINATION
LT-45
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LT
ILLUMINATIONPFP:27545
System DescriptionEKS003C7
Power is supplied at all times
lthrough 10A fuse [No. 31, located in the fuse and fusible link box]
lto lighting switch terminal 11.
The lighting switch must be in the 1ST or 2ND position for illumination.
The following chart shows the power and ground connector terminals for the components included in the illu-
mination system.
Component Connector No. Power terminal Ground terminal
Headlamp washier switch M23 3 4
Headlamp aiming switch M24 3 4
Door mirror remote control
switchM26 10 1
VDC off switch M25 3 4
Hazard switch M51 7 8
4WD mode switch M39 4 3
Rear window defogger switch M50 5 6
A/C auto amp. M52 12 11
Combination meter
(LHD models)M46 56 66
Combination meter
(RHD models)M46 45 56
Audio M42 2 1
CD auto changer M82 34 35
Heater control panel M55 2 6
A/T device M58 3 4
Cigarette lighter M56 3 2
Heated seat switch LH
(LHD models)B131 5 6
Heated seat switch RH
(LHD models)B132 5 6
Heated seat switch LH
(RHD models)B35 5 6
Heated seat switch RH
(RHD models)B34 5 6

ENGINE MAINTENANCE (YD22DDTI)
MA-29
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10. Warm up engine, and check for sound of coolant flow while running engine from idle up to 3,000 rpm with
heater temperature controller set at several position between COOL and WARM.
lSound may be noticeable at heater unit.
11. If sound is heard, bleed air from cooling system by repeating steps 5 through 7 until coolant level no
longer drops.
lClean excess coolant from engine.
FLUSHING COOLING SYSTEM
1. Fill radiator with water until water spills from the air relief hole, then close air relief flag. Fill radiator and
reservoir tank with water and reinstall radiator cap.
2. Run engine and warm it up to normal operating temperature.
3. Rev engine two or three times under no-load.
4. Stop engine and wait until it cools down.
5. Drain water.
6. Repeat steps 1 through 5 until clear water begins to drain from radiator.
Checking Cooling SystemELS000C4
WA RN ING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure
coolant escaping from the radiator. Wrap a thick cloth around the cap. Slowly turn it a quarter turn to
allow built-up pressure to escape. Carefully remove the cap by turning it all the way.
CHECKING COOLING SYSTEM HOSES
Check hoses for improper attachment, leaks, cracks, damage, loose connections, chafing and deterioration.
CHECKING RADIATOR
Check radiator for mud or clogging. If necessary, clean radiator as follows.
lBe careful not to bend or damage the radiator fins.
lWhen radiator is cleaned without removal, remove all surrounding parts such as cooling fan, radiator
shroud and horns. Then tape the harness and connectors to prevent water from entering.
1. Apply water by hose to the back side of the radiator core vertically downwards.
2. Apply water again to all radiator core surface once per minute.
3. Stop washing if any stains no longer flow out from the radiator.
4. Blow air into the back side of radiator core vertically downwards.
lUse compressed air lower than 490 kpa (5 kg/cm2, 71psi) and keep distance more than 30 cm(11.8 in).
5. Blow air again into all the radiator core surface once per minute until no water sprays out.
CHECKING RADIATOR CAP
lCheck that there is no dirt or damage on the valve seat of the radiator cap negative-pressure valve.
lCheck that there are no unusualness in the opening and closing
conditions of the negative-pressure valve.
lPull the negative pressure valve to open it.
lCheck that it close completely when released.
SMA967B

MTC-1
MANUAL AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
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SECTION
A
B
MTC
MANUAL AIR CONDITIONER
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
Wiring Diagrams and Trouble Diagnosis .................. 2
TROUBLE DIAGNOSIS .............................................. 3
How to Perform Trouble Diagnoses for Quick and
Accurate Repair ....................................................... 3
WORK FLOW ........................................................ 3
SYMPTOM TABLE ................................................ 3
Component Parts and Harness Connector Location..... 4
PASSENGER COMPARTMENT ........................... 4
Discharge Air Flow ................................................... 5
Wiring Diagram-HEATER ......................................... 6
Operational Check ................................................... 7
CHECKING BLOWER ........................................... 7
CHECKING DISCHARGE AIR .............................. 7
CHECKING RECIRCULATION ............................. 7
CHECKING TEMPERATURE DECREASE .......... 8
CHECKING TEMPERATURE INCREASE ............ 8
Mode Door ............................................................... 8
Air Mix Door ............................................................. 9
Intake Door Motor Circuit ....................................... 10
INSPECTION FLOW ............................................11
COMPONENT DESCRIPTION ............................11
DIAGNOSTIC PROCEDURE ...............................11
Blower Motor Circuit ............................................... 13
INSPECTION FLOW ........................................... 14
DIAGNOSTIC PROCEDURE .............................. 14
COMPONENT INSPECTION .............................. 17
Insufficient Heating ................................................. 17
INSPECTION FLOW ........................................... 18CONTROLLER .......................................................... 19
Removal and Installation ........................................ 19
Disassembly and Assembly .................................... 19
BLOWER MOTOR .................................................... 20
Removal and Installation ........................................ 20
BLOWER FAN RESISTOR ....................................... 21
Removal and Installation ........................................ 21
INTAKE DOOR MOTOR ........................................... 22
Removal and Installation ........................................ 22
HEATER UNIT ........................................................... 23
Removal and Installation ........................................ 23
REMOVAL ........................................................... 23
INSTALLATION ................................................... 24
Disassembly and Assembly .................................... 24
HEATER CORE ......................................................... 26
Removal and Installation ........................................ 26
MODE DOOR ............................................................ 27
Control Linkage adjustment .................................... 27
MODE DOOR CONTROL CABLE ....................... 27
AIR MIX DOOR ......................................................... 28
Control Linkage Adjustment ................................... 28
AIR MIX DOOR CONTROL CABLE .................... 28
DUCTS AND GRILLES ............................................. 29
Removal and Installation ........................................ 29
Ventilator Duct, Defroster Nozzle and Defroster
Ducts ...................................................................... 29
Center Ventilator Grille ........................................... 29
Side Ventilator Grille ............................................... 29
Foot Duct ................................................................ 30
Floor duct ................................................................ 30