2005 NISSAN X-TRAIL heating

OVERHEATING CAUSE ANALYSIS
CO-5
[QR]
C
D
E
F
G
H
I
J
K
L
MA
CO

OVERHEATING CAUSE ANALYSISPFP:00012
Troubleshooting ChartEBS00KOD
Symptom Check items
Cooling sys-
tem parts
malfunctionPoor heat transferWater pump malfunction Worn or loose drive belt
— Thermostat and water con-
trol valve stuck closed—
Damaged finsDust contamination or
paper clogging
Physical damage
Clogged radiator cooling
tubeExcess foreign material
(rust, dirt, sand, etc.)
Reduced air flowCooling fan does not oper-
ate
Fan assembly — High resistance to fan rota-
tion
Damaged fan blades
Damaged radiator shroud — — —
Improper engine coolant
mixture ratio—— —
Poor engine coolant quality — Engine coolant viscosity —
Insufficient engine coolantEngine coolant leaksCooling hoseLoose clamp
Cracked hose
Water pump Poor sealing
Radiator capLoose
Poor sealing
RadiatorO-ring for damage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank
Overflowing reservoir tankExhaust gas leaks into
cooling systemCylinder head deterioration
Cylinder head gasket dete-
rioration

CO-6
[QR]
OVERHEATING CAUSE ANALYSIS

Except cool-
ing system
parts mal-
function— Overload on engineAbusive drivingHigh engine rpm under no
load
Driving in low gear for
extended time
Driving at extremely high
speed
Power train system mal-
function
— Installed improper size
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air
flowBlocked bumper —
— Blocked radiator grilleInstalled car brassiere
Mud contamination or
paper clogging
Blocked radiator —
Blocked condenser
Blocked air flow
Installed large fog lamp Symptom Check items

CO-24
[QR]
THERMOSTAT AND WATER CONTROL VALVE

INSPECTION AFTER REMOVAL

Place a thread so that it is caught in the valves of thermostat and
water control valve. Immerse fully in a container filled with water.
Heat while stirring. (The example in the figure shows thermo-
stat.)

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

Continue heating. Check the maximum valve lift amount.
NOTE:
The maximum valve lift amount standard temperature for water
control valve is the reference value.

After checking the maximum valve lift amount, lower the water
temperature and check the valve closing temperature.
Standard:

If out of the standard, replace either or both thermostat and water control valve.
INSTALLATION
Note the following, and install in the reverse order of removal.
Thermostat and Water Control Valve

Install thermostat with making rubber ring groove fit to thermo-
stat flange with the whole circumference. (The example in the
figure shows thermostat.)
NOTE:
Same procedure is applied for installation of water control valve.

Install thermostat with jiggle valve facing upwards. (The position
deviation may be within the range of 20 degrees as shown in the
figure.)

Install water control valve with the arrow facing up and the frame
center part facing upwards. (The position deviation may be
within the range of 20 degrees as shown in the figure.)
Heater Pipe Installation
Apply a neutral detergent to O-ring, then quickly insert the insertion part of heater pipe into cylinder block.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using a radiator cap tester adapter (special service tool: EG17650301)
and a radiator cap tester (commercial service tool). Refer to CO-9, "
LEAK CHECK" .

Start and warm up engine. Visually check if there is no leaks of engine coolant and A/T fluid (A/T models).
SLC252B
Items Thermostat Water control valve
Valve opening temperature 80.5 - 83.5°C (177 - 182°F) 93.5 - 96.5°C (200 - 206°F)
Maximum valve lift 8 mm/ 95°C (0.315 in/ 203°F) 8 mm/ 108°C (0.315 in/ 226°F)
Valve closing temperature 77°C (171°F) 90°C (194°F)
PBIC0157E
PBIC0158E

CO-26
[YD22DDTi]
PRECAUTIONS

[YD22DDTi]PRECAUTIONSPFP:00001
Precautions For Liquid GasketEBS01276
LIQUID GASKET APPLICATION PROCEDURE
1. Remove old liquid gasket adhering to the liquid gasket application surface and the mating surface.

Remove liquid gasket completely from the liquid gasket application surface, mounting bolts, and bolt
holes.
2. Wipe the liquid gasket application surface and the mating surface with white gasoline (lighting and heating
use) to remove adhering moisture, grease and foreign materials.
3. Attach liquid gasket tube to the tube presser (special service
tool).
Use Genuine Liquid Gasket or equivalent.

Within five minutes of liquid gasket application, install the mat-
ing component.

If liquid gasket protrudes, wipe it off immediately.

Do not retighten mounting bolts or nuts after the installation.

After 30 minutes or more have passed from the installation, fill
engine oil and engine coolant.
PBIC2160E

CO-28
[YD22DDTi]
OVERHEATING CAUSE ANALYSIS

OVERHEATING CAUSE ANALYSISPFP:00012
Troubleshooting ChartEBS00BAW
Symptom Check items
Cooling sys-
tem parts
malfunctionPoor heat transferWater pump malfunction Worn or loose drive belt
— Thermostat stuck closed —
Damaged finsDust contamination or
paper clogging
Physical damage
Clogged radiator cooling
tubeExcess foreign material
(rust, dirt, sand, etc.)
Reduced air flowCooling fan does not oper-
ateRefer to DTC in EC1217
(cooling system)
— High resistance to fan rota-
tion
Fan assembly
Damaged fan blades
Damaged radiator shroud — — —
Improper engine coolant
mixture ratio—— —
Poor engine coolant quality — Engine coolant density —
Insufficient engine coolantEngine coolant leaksCooling hoseLoose clamp
Cracked hose
Water pump Poor sealing
Radiator capLoose
Poor sealing
RadiatorO-ring for damage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank
Overflowing reservoir tankExhaust gas leaks into
cooling systemCylinder head deterioration
Cylinder head gasket dete-
rioration

OVERHEATING CAUSE ANALYSIS
CO-29
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
CO

Except cool-
ing system
parts mal-
function— Overload on engineAbusive drivingHigh engine rpm under no
load
Driving in low gear for
extended time
Driving at extremely high
speed
Powertrain system mal-
function
— Installed improper size
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air
flowBlocked bumper —
— Blocked radiator grilleInstalled car brassiere
Mud contamination or
paper clogging
Blocked radiator —
Blocked condenser
Blocked air flow
Installed large fog lamp Symptom Check items

CO-46
[YD22DDTi]
THERMOSTAT AND WATER PIPING

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-32, "
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

EC-4 CONSULT-II Reference Value in Data Monitor Mode
.306
On Board Diagnosis Logic ....................................306
DTC Confirmation Procedure ...............................306
Wiring Diagram .....................................................308
Diagnostic Procedure ...........................................311
Component Inspection ..........................................313
DTC P1128 THROTTLE CONTROL MOTOR .........314
Component Description ........................................314
On Board Diagnosis Logic ....................................314
DTC Confirmation Procedure ...............................314
Wiring Diagram .....................................................315
Diagnostic Procedure ...........................................319
Component Inspection ..........................................320
Removal and Installation ......................................321
DTC P1143 HO2S1 .................................................322
Component Description ........................................322
CONSULT-II Reference Value in Data Monitor Mode
.322
On Board Diagnosis Logic ....................................322
DTC Confirmation Procedure ...............................323
Overall Function Check ........................................323
Diagnostic Procedure ...........................................324
Component Inspection ..........................................326
Removal and Installation ......................................327
DTC P1144 HO2S1 .................................................328
Component Description ........................................328
CONSULT-II Reference Value in Data Monitor Mode
.328
On Board Diagnosis Logic ....................................328
DTC Confirmation Procedure ...............................329
Overall Function Check ........................................329
Diagnostic Procedure ...........................................330
Component Inspection ..........................................332
Removal and Installation ......................................333
DTC P1146 HO2S2 .................................................334
Component Description ........................................334
CONSULT-II Reference Value in Data Monitor Mode
.334
On Board Diagnosis Logic ....................................334
DTC Confirmation Procedure ...............................335
Overall Function Check ........................................336
Wiring Diagram .....................................................337
Diagnostic Procedure ...........................................338
Component Inspection ..........................................340
Removal and Installation ......................................341
DTC P1147 HO2S2 .................................................342
Component Description ........................................342
CONSULT-II Reference Value in Data Monitor Mode
.342
On Board Diagnosis Logic ....................................342
DTC Confirmation Procedure ...............................343
Overall Function Check ........................................344
Wiring Diagram .....................................................345
Diagnostic Procedure ...........................................346
Component Inspection ..........................................348
Removal and Installation ......................................349
DTC P1211 TCS CONTROL UNIT ..........................350
Description ............................................................350On Board Diagnosis Logic ....................................350
DTC Confirmation Procedure ................................350
Diagnostic Procedure ............................................350
DTC P1212 TCS COMMUNICATION LINE .............351
Description ............................................................351
On Board Diagnosis Logic ....................................351
DTC Confirmation Procedure ................................351
Diagnostic Procedure ............................................351
DTC P1217 ENGINE OVER TEMPERATURE ........352
System Description ...............................................352
CONSULT-II Reference Value in Data Monitor Mode
.353
On Board Diagnosis Logic ....................................353
Overall Function Check .........................................353
Wiring Diagram .....................................................356
Diagnostic Procedure ............................................359
Main 12 Causes of Overheating ...........................366
Component Inspection ..........................................367
DTC P1225 TP SENSOR ........................................368
Component Description ........................................368
On Board Diagnosis Logic ....................................368
DTC Confirmation Procedure ................................368
Diagnostic Procedure ............................................369
Removal and Installation .......................................369
DTC P1226 TP SENSOR ........................................370
Component Description ........................................370
On Board Diagnosis Logic ....................................370
DTC Confirmation Procedure ................................370
Diagnostic Procedure ............................................371
Removal and Installation .......................................371
DTC P1229 SENSOR POWER SUPPLY ................372
On Board Diagnosis Logic ....................................372
DTC Confirmation Procedure ................................372
Wiring Diagram .....................................................373
Diagnostic Procedure ............................................374
DTC P1564 ASCD STEERING SWITCH ................377
Component Description ........................................377
CONSULT-II Reference Value in Data Monitor Mode
.377
On Board Diagnosis Logic ....................................377
DTC Confirmation Procedure ................................378
Wiring Diagram .....................................................379
Diagnostic Procedure ............................................383
Component Inspection ..........................................386
DTC P1572 ASCD BRAKE SWITCH ......................387
Component Description ........................................387
CONSULT-II Reference Value in Data Monitor Mode
.387
On Board Diagnosis Logic ....................................387
DTC Confirmation Procedure ................................388
Wiring Diagram .....................................................389
Diagnostic Procedure ............................................390
Component Inspection ..........................................395
DTC P1574 ASCD VEHICLE SPEED SENSOR .....396
System Description ...............................................396
On Board Diagnosis Logic ....................................396
DTC Confirmation Procedure ................................396
Diagnostic Procedure ............................................397