2005 NISSAN X-TRAIL overheating

CO-1
ENGINE COOLING SYSTEM
B ENGINE
CONTENTS
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SECTION CO
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ENGINE COOLING SYSTEM
QR
PRECAUTIONS .......................................................... 3
Precautions for Liquid Gasket .................................. 3
LIQUID GASKET APPLICATION PROCEDURE ..... 3
PREPARATION ........................................................... 4
Special Service Tools ............................................... 4
Commercial Service Tools ........................................ 4
OVERHEATING CAUSE ANALYSIS .......................... 5
Troubleshooting Chart .............................................. 5
COOLING SYSTEM .................................................... 7
Cooling Circuit .......................................................... 7
System Chart ........................................................... 8
ENGINE COOLANT .................................................... 9
Inspection ................................................................. 9
LEVEL CHECK ..................................................... 9
LEAK CHECK ....................................................... 9
Changing Engine Coolant ........................................ 9
DRAINING ENGINE COOLANT ........................... 9
REFILLING ENGINE COOLANT ........................ 10
FLUSHING COOLING SYSTEM ......................... 10
RADIATOR ................................................................ 12
Removal and Installation ........................................ 12
REMOVAL ........................................................... 12
INSTALLATION ................................................... 13
INSPECTION AFTER INSTALLATION ............... 13
Checking Radiator Cap .......................................... 13
Checking Radiator .................................................. 13
RADIATOR (ALUMINUM TYPE) .............................. 15
Disassembly and Assembly ................................... 15
PREPARATION ................................................... 15
DISASSEMBLY ................................................... 15
ASSEMBLY ......................................................... 16
INSPECTION ...................................................... 18
COOLING FAN ......................................................... 19
Removal and Installation ........................................ 19
REMOVAL ........................................................... 19INSTALLATION ................................................... 19
Disassembly and Assembly .................................... 20
DISASSEMBLY ................................................... 20
INSPECTION AFTER DISASSEMBLY ................ 20
ASSEMBLY ......................................................... 20
WATER PUMP .......................................................... 21
Removal and Installation ........................................ 21
REMOVAL ........................................................... 21
INSPECTION AFTER REMOVAL ....................... 22
INSTALLATION ................................................... 22
INSPECTION AFTER INSTALLATION ................ 22
THERMOSTAT AND WATER CONTROL VALVE .... 23
Removal and Installation ........................................ 23
REMOVAL ........................................................... 23
INSPECTION AFTER REMOVAL ....................... 24
INSTALLATION ................................................... 24
INSPECTION AFTER INSTALLATION ................ 24
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 25
Standard and Limit .................................................. 25
CAPACITY ........................................................... 25
RADIATOR .......................................................... 25
THERMOSTAT .................................................... 25
WATER CONTROL VALVE ................................. 25
Tightening Torque ................................................... 25
YD22DDTi
PRECAUTIONS ........................................................ 26
Precautions For Liquid Gasket ............................... 26
LIQUID GASKET APPLICATION PROCEDURE ... 26
PREPARATION ......................................................... 27
Special Service Tools ............................................. 27
Commercial Service Tools ...................................... 27
OVERHEATING CAUSE ANALYSIS ........................ 28
Troubleshooting Chart ............................................ 28
COOLING SYSTEM .................................................. 30
Cooling Circuit ........................................................ 30
System Chart .......................................................... 31
ENGINE COOLANT .................................................. 32
Inspection ............................................................... 32

OVERHEATING CAUSE ANALYSIS
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[QR]
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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-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]
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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

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

EC-8 Component Inspection ..........................................735
Removal and Installation ......................................736
DTC P1124, P1126 THROTTLE CONTROL MOTOR
RELAY .....................................................................737
Component Description ........................................737
CONSULT-II Reference Value in Data Monitor Mode
.737
On Board Diagnosis Logic ....................................737
DTC Confirmation Procedure ...............................737
Wiring Diagram .....................................................739
Diagnostic Procedure ...........................................742
Component Inspection ..........................................744
DTC P1128 THROTTLE CONTROL MOTOR .........745
Component Description ........................................745
On Board Diagnosis Logic ....................................745
DTC Confirmation Procedure ...............................745
Wiring Diagram .....................................................746
Diagnostic Procedure ...........................................750
Component Inspection ..........................................751
Removal and Installation ......................................752
DTC P1211 TCS CONTROL UNIT ..........................753
Description ............................................................753
On Board Diagnosis Logic ....................................753
DTC Confirmation Procedure ...............................753
Diagnostic Procedure ...........................................753
DTC P1212 TCS COMMUNICATION LINE ............754
Description ............................................................754
On Board Diagnosis Logic ....................................754
DTC Confirmation Procedure ...............................754
Diagnostic Procedure ...........................................754
DTC P1217 ENGINE OVER TEMPERATURE ........755
System Description ...............................................755
CONSULT-II Reference Value in Data Monitor Mode
.756
On Board Diagnosis Logic ....................................756
Overall Function Check ........................................756
Wiring Diagram .....................................................759
Diagnostic Procedure ...........................................762
Main 12 Causes of Overheating ...........................769
Component Inspection ..........................................770
DTC P1225 TP SENSOR ........................................771
Component Description ........................................771
On Board Diagnosis Logic ....................................771
DTC Confirmation Procedure ...............................771
Diagnostic Procedure ...........................................772
Removal and Installation ......................................772
DTC P1226 TP SENSOR ........................................773
Component Description ........................................773
On Board Diagnosis Logic ....................................773
DTC Confirmation Procedure ...............................773
Diagnostic Procedure ...........................................774
Removal and Installation ......................................774
DTC P1229 SENSOR POWER SUPPLY ................775
On Board Diagnosis Logic ....................................775
DTC Confirmation Procedure ...............................775
Wiring Diagram .....................................................776
Diagnostic Procedure ...........................................777
DTC P1564 ASCD STEERING SWITCH ................780
Component Description ........................................780CONSULT-II Reference Value in Data Monitor Mode
.780
On Board Diagnosis Logic ....................................780
DTC Confirmation Procedure ................................781
Wiring Diagram .....................................................782
Diagnostic Procedure ............................................786
Component Inspection ..........................................789
DTC P1572 ASCD BRAKE SWITCH ......................790
Component Description ........................................790
CONSULT-II Reference Value in Data Monitor Mode
.790
On Board Diagnosis Logic ....................................790
DTC Confirmation Procedure ................................791
Overall Function Check .........................................791
Wiring Diagram .....................................................793
Diagnostic Procedure ............................................794
Component Inspection ..........................................799
DTC P1574 ASCD VEHICLE SPEED SENSOR .....800
Component Description ........................................800
On Board Diagnosis Logic ....................................800
DTC Confirmation Procedure ................................800
Diagnostic Procedure ............................................801
DTC P1706 PNP SWITCH .......................................802
Component Description ........................................802
CONSULT-II Reference Value in Data Monitor Mode
.802
On Board Diagnosis Logic ....................................802
DTC Confirmation Procedure ................................802
Overall Function Check .........................................802
Wiring Diagram .....................................................804
Diagnostic Procedure ............................................805
DTC P1720 VSS ......................................................807
Description ............................................................807
CONSULT-II Reference Value in Data Monitor Mode
.807
On Board Diagnosis Logic ....................................807
DTC Confirmation Procedure ................................807
Diagnostic Procedure ............................................808
DTC P1805 BRAKE SWITCH .................................809
Description ............................................................809
CONSULT-II Reference Value in Data Monitor Mode
.809
On Board Diagnosis Logic ....................................809
DTC Confirmation Procedure ................................809
Wiring Diagram .....................................................811
Diagnostic Procedure ............................................812
Component Inspection ..........................................813
DTC P2122, P2123 APP SENSOR .........................815
Component Description ........................................815
CONSULT-II Reference Value in Data Monitor Mode
.815
On Board Diagnosis Logic ....................................815
DTC Confirmation Procedure ................................816
Wiring Diagram .....................................................817
Diagnostic Procedure ............................................819
Component Inspection ..........................................821
Removal and Installation .......................................821
DTC P2127, P2128 APP SENSOR .........................822
Component Description ........................................822

EC-11
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ECA
Diagnostic Procedure ..........................................1066
Removal and Installation .....................................1067
DTC P0089 FUEL PUMP .......................................1068
On Board Diagnosis Logic ..................................1068
DTC Confirmation Procedure ..............................1068
Diagnostic Procedure ..........................................1068
Removal and Installation .....................................1070
DTC P0093 FUEL SYSTEM ..................................1071
On Board Diagnosis Logic ..................................1071
DTC Confirmation Procedure ..............................1071
Diagnostic Procedure ..........................................1071
Component Inspection ........................................1073
Removal and Installation .....................................1074
DTC P0101 MAF SENSOR ...................................1075
Component Description .......................................1075
CONSULT-II Reference Value in Data Monitor Mode
1075
On Board Diagnosis Logic ..................................1075
DTC Confirmation Procedure ..............................1076
Wiring Diagram ...................................................1077
Diagnostic Procedure ..........................................1078
Component Inspection ........................................1082
Removal and Installation .....................................1082
DTC P0102, P0103 MAF SENSOR .......................1083
Component Description .......................................1083
CONSULT-II Reference Value in Data Monitor Mode
1083
On Board Diagnosis Logic ..................................1083
DTC Confirmation Procedure ..............................1083
Wiring Diagram ...................................................1084
Diagnostic Procedure ..........................................1085
Component Inspection ........................................1087
Removal and Installation .....................................1087
DTC P0112, P0113 IAT SENSOR ..........................1088
Component Description .......................................1088
On Board Diagnosis Logic ..................................1088
DTC Confirmation Procedure ..............................1088
Wiring Diagram ...................................................1089
Diagnostic Procedure ..........................................1090
Component Inspection ........................................1092
Removal and Installation .....................................1092
DTC P0117, P0118 ECT SENSOR ........................1093
Description ..........................................................1093
On Board Diagnosis Logic ..................................1093
DTC Confirmation Procedure ..............................1093
Wiring Diagram ...................................................1095
Diagnostic Procedure ..........................................1096
Component Inspection ........................................1098
Removal and Installation .....................................1098
DTC P0122, P0123 APP SENSOR .......................1099
Description ..........................................................1099
CONSULT-II Reference Value in Data Monitor Mode
1099
On Board Diagnosis Logic ..................................1099
DTC Confirmation Procedure ..............................1099
Wiring Diagram ...................................................1101
Diagnostic Procedure ..........................................1103
Component Inspection ........................................1105
Removal and Installation .....................................1105DTC P0182, P0183 FUEL PUMP TEMPERATURE
SENSOR ................................................................110 6
Description ...........................................................11 0 6
CONSULT-II Reference Value in Data Monitor Mode
11 0 6
On Board Diagnosis Logic ...................................11 0 6
DTC Confirmation Procedure ..............................11 0 6
Wiring Diagram ....................................................11 0 7
Diagnostic Procedure ..........................................11 0 8
Removal and Installation .....................................11 0 9
DTC P0192, P0193 FRP SENSOR ........................111 0
Description ...........................................................1110
CONSULT-II Reference Value in Data Monitor Mode
111 0
On Board Diagnosis Logic ...................................1110
DTC Confirmation Procedure ..............................1110
Wiring Diagram ....................................................1111
Diagnostic Procedure ..........................................1113
Component Inspection .........................................1115
Removal and Installation .....................................1115
DTC P0200 FUEL INJECTOR ...............................111 6
On Board Diagnosis Logic ...................................1116
DTC Confirmation Procedure ..............................1116
Diagnostic Procedure ..........................................1116
DTC P0201 - P0204 FUEL INJECTOR ..................111 8
Component Description .......................................1118
CONSULT-II Reference Value in Data Monitor Mode
111 8
On Board Diagnosis Logic ...................................1118
DTC Confirmation Procedure ..............................1119
Wiring Diagram ....................................................11 2 0
Diagnostic Procedure ..........................................11 2 2
Component Inspection .........................................11 2 3
Removal and Installation .....................................11 2 3
DTC P0217 ENGINE OVER TEMPERATURE .......112 4
System Description ..............................................11 2 4
CONSULT-II Reference Value in Data Monitor Mode
11 2 4
On Board Diagnosis Logic ...................................11 2 5
Overall Function Check .......................................11 2 5
Wiring Diagram ....................................................11 2 7
Diagnostic Procedure ..........................................11 2 8
Main 12 Causes of Overheating ..........................11 3 6
Component Inspection .........................................11 3 7
DTC P0222, P0223 APP SENSOR ........................113 8
Description ...........................................................11 3 8
CONSULT-II Reference Value in Data Monitor Mode
11 3 8
On Board Diagnosis Logic ...................................11 3 8
DTC Confirmation Procedure ..............................11 3 8
Wiring Diagram ....................................................11 4 0
Diagnostic Procedure ..........................................11 4 2
Component Inspection .........................................11 4 4
Removal and Installation .....................................11 4 4
DTC P0234 TC SYSTEM .......................................114 5
Description ...........................................................11 4 5
On Board Diagnosis Logic ...................................11 4 5
Overall Function Check .......................................11 4 5
Wiring Diagram ....................................................11 4 6