NISSAN X-TRAIL 2003 Service Repair Manual

RADIATOR (ALUMINUM TYPE)
CO-39
[YD22DDTi]
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Grip the crimped edge and bend it upwards so that radiator
plate pliers B slips off.
CAUTION:
Do not bend excessively.

In areas where radiator plate pliers B cannot be used, use a
screwdriver to bend the edge up.
CAUTION:
Be careful not to damage tank.
2. Remove sealing rubber.
3. Make sure the edge stands straight up.
ASSEMBLY
1. Clean contact portion of tank.
SLC893
SLC930
SLC931
SLC932

CO-40
[YD22DDTi]
RADIATOR (ALUMINUM TYPE)

2. Install sealing rubber while pushing it with fingers.
CAUTION:
Be careful not to twist sealing rubber.
3. Caulk tank in numerical order as shown in the figure with radia-
tor plate pliers A (special service tool).

Use pliers in the locations where radiator plate pliers A cannot
be used.
4. Make sure that the rim is completely crimped down.
5. Make sure that there is no leakage.
Refer to CO-41, "
INSPECTION" .
SLC917A
SLC904
PBIC2076E
SLC897
Standard height “H”: 8.0 - 8.4 mm (0.315 - 0.331 in)
SLC554A

RADIATOR (ALUMINUM TYPE)
CO-41
[YD22DDTi]
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INSPECTION
1. Apply pressure with the radiator cap tester adapter (special ser-
vice tool) and the radiator cap tester (commercial service tool).
WARNING:
To prevent the risk of hose coming undone while under
pressure, securely fasten it down with hose clamp.
2. Check for leakage by soaking radiator in water container with
the testing pressure applied.Testing pressure
: 157 kPa (1.57 bar, 1.6 kg/cm
2 , 23 psi)
SLC933
SLC934

CO-42
[YD22DDTi]
WATER PUMP

WATE R P U M PPFP:21020
Removal and InstallationEBS00BB4
WARNING:
Do not remove radiator cap when the engine is hot. Serious burns could occur from high pressure
engine coolant escaping from the radiator.
REMOVAL
1. Remove RH engine undercover.
2. Remove drive belt. Refer to EM-131, "
DRIVE BELTS" .
3. Drain engine coolant. Refer to CO-31, "
DRAINING ENGINE COOLANT" .
CAUTION:
Perform when engine is cold.
4. Support the bottom of oil pan with a floor jack etc, and remove RH engine mounting insulator (front side of
engine). Refer to EM-208, "
ENGINE ASSEMBLY" .
5. Remove water pump pulley.

Loosen the pulley bolts after fixing the pulley using a screwdriver etc.
6. Remove RH engine mounting bracket.
7. Remove water pump.

Engine coolant will leak from cylinder block, so have a receptacle ready below.
CAUTION:

Handle the water pump vane so that it does not contact any other parts.

Water pump cannot be disassembled and should be replaced as a unit.
1. Gasket 2. Water pump 3. RH engine mounting bracket
4. Water pump pulley
PBIC2384E

WATER PUMP
CO-43
[YD22DDTi]
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INSPECTION AFTER REMOVAL

Visually check if there is no significant dirt or rusting on the
water pump body and vane.

Make sure that there is no looseness in the vane shaft, and that
it turns smoothly when rotated by hand.

If there are any unusualness, replace water pump assembly as
necessary.
INSTALLATION

Install in the reverse order of removal.

Install water pump pulley with the front mark (painted white, used to prevent errors during assembly) fac-
ing the front of engine. Refer to CO-42, "
WATER PUMP" .
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using the radiator cap tester adapter (special service tool:
EG17650301) and the radiator cap tester (commercial service tool). Refer to CO-31, "
CHECKING RADIA-
TOR SYSTEM FOR LEAKS" .

Start and warm up engine. Visually check if there is no leaks of engine coolant.
SBIA0132E

CO-44
[YD22DDTi]
THERMOSTAT AND WATER PIPING

THERMOSTAT AND WATER PIPINGPFP:21200
Removal and InstallationEBS00BK9
WARNING:
Do not remove radiator cap when engine is hot. Serious burns could occur from high pressure engine
coolant escaping from radiator.
REMOVAL
1. Remove engine undercover.
2. Drain engine coolant. Refer to CO-31, "
DRAINING ENGINE COOLANT" .
CAUTION:
Perform when engine is cold.
3. Remove radiator hose (lower) from water inlet side. Refer to CO-34, "
RADIATOR" .
4. Remove water inlet and thermostat.
5. Remove thermostat housing.
1. Heater return pipe 2. Gasket 3. Thermostat housing
4. Thermostat 5. Rubber ring 6. Water inlet
7. Water inlet pipe 8. Radiator hose (lower)
PBIC2018E

THERMOSTAT AND WATER PIPING
CO-45
[YD22DDTi]
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INSPECTION AFTER REMOVAL
Thermostat

Place a string so that it is caught in the valves of the thermostat.
Immerse fully in a container filled with water. Heat while stirring.

The valve opening temperature is the temperature at which the
valve opens and falls from the thread.

Continue heating. Check the full-open lift amount.

After checking the full-open lift amount, lower the water temper-
ature and check the valve closing temperature.
Standard values

If out of the standard, replace thermostat.
INSTALLATION
Note the following, and install in the reverse order of removal.

Install the thermostat with the whole circumference of each
flange part fit securely inside the rubber ring.

Install the thermostat with the jiggle valve facing upwards.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using the radiator cap tester adapter (special service tool:
EG17650301) and the radiator cap tester (commercial service tool). Refer to CO-31, "
CHECKING RADIA-
TOR SYSTEM FOR LEAKS" .

Start and warm up engine. Visually check if there is no leaks of engine coolant.
SLC252B
Item Thermostat
Valve opening temperature 80 - 84°C (176 - 183° F)
Full-open lift amount More than 10 mm/ 95°C (0.39 in/ 203 °F)
Valve closing temperature More than 77°C (171°F)
JLC300B

CO-46
[YD22DDTi]
SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Standard and LimitEBS00CU0
CAPACITY
Unit: (lmp qt)
THERMOSTAT
RADIATOR
Unit: kPa (bar, kg/cm2 , psi)
Tightening TorqueEBS00BKE
Unit: N·m (kg-m, ft-lb)
Unit: N·m (kg-m, in-lb)*
Engine coolant capacity (With reservoir tank at MAX level) Approx 9.5 (8-3/8)
Reservoir tank0.6 (1/2)
Valve opening temperature 80 - 84°C (176 - 183°F)
Full open lift amount More than 10 mm/ 95°C (0.39 in/203°F)
Valve closing temperature More than 77°C (171°F)
Cap relief pressureStandard 78 - 98 (0.78 - 0.98, 0.8 - 1.0, 11 - 14)
Limit 59 (0.59, 0.6, 9)
Leakage test pressure 157 (1.57, 1.6, 23)
Air relief plug6.9 - 7.8 (0.7 - 0.8, 61 - 69)*
Radiator mounting bracket
Cooling fan assembly
Cooling fan (left and right)
Cooling fan motors4.2 (0.42, 37)*
4.2 (0.42, 37)*
3.43 (0.35, 30)*
4.41 (0.45, 39)*
Water pump
Water pump pulley
Water inlet
Thermostat housing
Water inlet pipe
Heater return pipe26.5 (2.7, 20)
8.5 (0.86, 75)*
25 (2.6, 18)
25 (2.6, 18)
25 (2.6, 18)
25 (2.6, 18)

EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
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SECTION EC
A
EC

ENGINE CONTROL SYSTEM
QR (WITH EURO-OBD)
INDEX FOR DTC ...................................................... 19
Alphabetical Index .................................................. 19
DTC No. Index ....................................................... 21
PRECAUTIONS ........................................................ 24
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................ 24
On Board Diagnostic (OBD) System of Engine and
A/T .......................................................................... 24
Precaution .............................................................. 24
Wiring Diagrams and Trouble Diagnosis ................ 27
PREPARATION ......................................................... 28
Special Service Tools ............................................. 28
Commercial Service Tools ...................................... 29
ENGINE CONTROL SYSTEM .................................. 30
System Diagram ..................................................... 30
Vacuum Hose Drawing ........................................... 32
System Chart ......................................................... 34
Multiport Fuel Injection (MFI) System .................... 34
Electronic Ignition (EI) System ............................... 37
Air Conditioning Cut Control ................................... 37
Fuel Cut Control (at No Load and High Engine
Speed) .................................................................... 38
CAN Communication Unit ...................................... 38
BASIC SERVICE PROCEDURE .............................. 44
Idle Speed and Ignition Timing Check .................... 44
Accelerator Pedal Released Position Learning ...... 45
Throttle Valve Closed Position Learning ................ 46
Idle Air Volume Learning ........................................ 46
Fuel Pressure Check .............................................. 48
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 51
Introduction ............................................................ 51
Two Trip Detection Logic ........................................ 51
Emission-related Diagnostic Information ................ 52
NATS (Nissan Anti-theft System) ........................... 64
Malfunction Indicator (MI) ....................................... 64
OBD System Operation Chart ................................ 67
TROUBLE DIAGNOSIS ............................................ 73
Trouble Diagnosis Introduction ............................... 73DTC Inspection Priority Chart ................................. 76
Fail-safe Chart ........................................................ 77
Basic Inspection ..................................................... 79
Symptom Matrix Chart ............................................ 84
Engine Control Component Parts Location ............ 88
Circuit Diagram ....................................................... 93
ECM Harness Connector Terminal Layout ............. 95
ECM Terminals and Reference Value ..................... 95
CONSULT-II Function ...........................................102
Generic Scan Tool (GST) Function .......................112
CONSULT-II Reference Value in Data Monitor Mode
.114
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................116
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .119
Description ............................................................119
Testing Condition ..................................................119
Inspection Procedure ............................................119
Diagnostic Procedure ...........................................120
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .......................................................................123
Description ............................................................123
Diagnostic Procedure ...........................................123
POWER SUPPLY AND GROUND CIRCUIT ...........124
Wiring Diagram .....................................................124
Diagnostic Procedure ...........................................125
Component Inspection ..........................................131
Ground Inspection ................................................131
DTC U1000, U1001 CAN COMMUNICATION LINE .132
Description ............................................................132
On Board Diagnosis Logic ....................................132
DTC Confirmation Procedure ...............................132
Wiring Diagram .....................................................133
Diagnostic Procedure ...........................................134
DTC P0011 IVT CONTROL .....................................135
Description ............................................................135
CONSULT-II Reference Value in Data Monitor Mode
.135
On Board Diagnosis Logic ....................................136

EC-2 DTC Confirmation Procedure ...............................136
Diagnostic Procedure ...........................................137
DTC P0031, P0032 HO2S1 HEATER .....................138
Description ............................................................138
CONSULT-II Reference Value in Data Monitor Mode
.138
On Board Diagnosis Logic ....................................138
DTC Confirmation Procedure ...............................138
Wiring Diagram .....................................................140
Diagnostic Procedure ...........................................141
Component Inspection ..........................................143
Removal and Installation ......................................143
DTC P0037, P0038 HO2S2 HEATER .....................144
Description ............................................................144
CONSULT-II Reference Value in Data Monitor Mode
.144
On Board Diagnosis Logic ....................................144
DTC Confirmation Procedure ...............................144
Wiring Diagram .....................................................146
Diagnostic Procedure ...........................................147
Component Inspection ..........................................148
Removal and Installation ......................................148
DTC P0102, P0103 MAF SENSOR .........................149
Component Description ........................................149
CONSULT-II Reference Value in Data Monitor Mode
.149
On Board Diagnosis Logic ....................................149
DTC Confirmation Procedure ...............................149
Wiring Diagram .....................................................151
Diagnostic Procedure ...........................................152
Component Inspection ..........................................155
Removal and Installation ......................................155
DTC P0112, P0113 IAT SENSOR ...........................156
Component Description ........................................156
On Board Diagnosis Logic ....................................156
DTC Confirmation Procedure ...............................156
Wiring Diagram .....................................................158
Diagnostic Procedure ...........................................159
Component Inspection ..........................................161
Removal and Installation ......................................161
DTC P0117, P0118 ECT SENSOR ..........................162
Component Description ........................................162
On Board Diagnosis Logic ....................................162
DTC Confirmation Procedure ...............................163
Wiring Diagram .....................................................164
Diagnostic Procedure ...........................................165
Component Inspection ..........................................167
Removal and Installation ......................................167
DTC P0122, P0123 TP SENSOR ............................168
Component Description ........................................168
CONSULT-II Reference Value in Data Monitor Mode
.168
On Board Diagnosis Logic ....................................168
DTC Confirmation Procedure ...............................168
Wiring Diagram .....................................................170
Diagnostic Procedure ...........................................172
Component Inspection ..........................................175
Removal and Installation ......................................175DTC P0132 HO2S1 .................................................176
Component Description ........................................176
CONSULT-II Reference Value in Data Monitor Mode
.176
On Board Diagnosis Logic ....................................176
DTC Confirmation Procedure ................................177
Wiring Diagram .....................................................178
Diagnostic Procedure ............................................179
Component Inspection ..........................................181
Removal and Installation .......................................182
DTC P0133 HO2S1 .................................................183
Component Description ........................................183
CONSULT-II Reference Value in Data Monitor Mode
.183
On Board Diagnosis Logic ....................................183
DTC Confirmation Procedure ................................184
Overall Function Check .........................................185
Wiring Diagram .....................................................186
Diagnostic Procedure ............................................187
Component Inspection ..........................................190
Removal and Installation .......................................192
DTC P0134 HO2S1 .................................................193
Component Description ........................................193
CONSULT-II Reference Value in Data Monitor Mode
.193
On Board Diagnosis Logic ....................................193
DTC Confirmation Procedure ................................194
Overall Function Check .........................................194
Wiring Diagram .....................................................196
Diagnostic Procedure ............................................197
Component Inspection ..........................................198
Removal and Installation .......................................200
DTC P0138 HO2S2 .................................................201
Component Description ........................................201
CONSULT-II Reference Value in Data Monitor Mode
.201
On Board Diagnosis Logic ....................................201
DTC Confirmation Procedure ................................201
Overall Function Check .........................................202
Wiring Diagram .....................................................203
Diagnostic Procedure ............................................204
Component Inspection ..........................................205
Removal and Installation .......................................207
DTC P0139 HO2S2 .................................................208
Component Description ........................................208
CONSULT-II Reference Value in Data Monitor Mode
.208
On Board Diagnosis Logic ....................................208
DTC Confirmation Procedure ................................209
Overall Function Check .........................................210
Wiring Diagram .....................................................211
Diagnostic Procedure ............................................212
Component Inspection ..........................................214
Removal and Installation .......................................215
DTC P0171 FUEL INJECTION SYSTEM FUNCTION .216
On Board Diagnosis Logic ....................................216
DTC Confirmation Procedure ................................216
Wiring Diagram .....................................................218
Diagnostic Procedure ...........................................