2001 NISSAN X-TRAIL cooling

DTC P1217 OVERHEAT (COOLING SYSTEM)
EC-1517
[YD]
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5.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors E64, F5
●Harness for open or short between cooling fan relays-2 and -3 and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK COOLING FAN RELAYS-2 AND -3
Refer to EC-1518, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace cooling fan relays.
7.CHECK COOLING FAN MOTORS
Refer to EC-1518, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace cooling fan motors.
8.CHECK INTERMITTENT INCIDENT
Perform EC-1441, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Main 12 Causes of OverheatingEBS004QY
Engine Step Inspection item Equipment Condition Reference page
OFF 1
●Blocked radiator
●Blocked radiator grille
●Blocked bumper
●Visual No blocking —
2
●Coolant mixture●Coolant tester 50 - 50% coolant mixture See MA-16, "RECOM-
MENDED FLUIDS AND
LUBRICANTS" .
3
●Coolant level●Visual Coolant up to MAX level
in reservoir tank and radi-
ator filler neckSee MA-27, "Changing
Engine Coolant" .
4
●Radiator cap●Pressure tester 78 - 98 kPa (0.78 - 0.98
ba r, 0.8 - 1.0 kg/cm2 , 11 -
14 psi)See CO-33, "
Checking
Radiator Cap" .
ON*
25●Coolant leaks●Visual No leaks See CO-29, "CHECKING
RADIATOR SYSTEM
FOR LEAKS" .
ON*
26●Thermostat●Touch the upper and
lower radiator hosesBoth hoses should be hot See CO-41, "THERMO-
STAT AND WATER PIP-
ING" .
ON*
17●Cooling fan●CONSULT-II Operating See Trouble Diagnosis for
DTC P1217, EC-1458
.
OFF 8
●Combustion gas leak●Color checker chemi-
cal tester 4 Gas ana-
lyzerNegative —

EC-1518
[YD]
DTC P1217 OVERHEAT (COOLING SYSTEM)
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes.
*4: After 60 minutes of cool down time.
For more information, refer to CO-25, "
OVERHEATING CAUSE ANALYSIS" .
Component InspectionEBS004QZ
COOLING FAN RELAY-1, -2 AND -3
Check continuity between terminals 3 and 5, 6 and 7 under the fol-
lowing conditions.
COOLING FAN MOTOR-1 AND -2
Supply battery voltage between the following terminals and check
operation.
ON*39●Coolant temperature
gauge●Visual Gauge less than 3/4
when driving—
●Coolant overflow to
reservoir tank●Visual No overflow during driv-
ing and idlingSeeMA-27, "Changing
Engine Coolant" .
OFF*
410●Coolant return from
reservoir tank to radia-
tor●Visual Should be initial level in
reservoir tankSeeMA-28, "REFILLING
ENGINE COOLANT" .
OFF 11
●Cylinder head●Straight gauge feeler
gauge0.1mm (0.004 in) Maxi-
mum distortion (warping)SeeEM-182, "CYLIN-
DER HEAD" .
12
●Cylinder block and pis-
tons●Visual No scuffing on cylinder
walls or pistonSeeEM-197, "CYLIN-
DER BLOCK" . Engine Step Inspection item Equipment Condition Reference page
Conditions Continuity
12V direct current supply between ter-
minals 1 and 2Ye s
No current supply No
SEF745U
SpeedTe r m i n a l s
(+) (–)
Cooling fan motor-1Low 1 4
High 1, 2 3, 4
Cooling fan motor-2Low 1 4
High 1, 2 3, 4
PBIB0423E

PRECAUTIONS
AT-7
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●After performing each TROUBLE DIAGNOSIS, perform
“DTC (Diagnostic Trouble Code) CONFIRMATION PROCE-
DURE”.
The DTC should not be displayed in the “DTC CONFIRMA-
TION PROCEDURE” if the repair is completed.
●Before proceeding with disassembly, thoroughly clean the out-
side of the transaxle. It is important to prevent the internal parts
from becoming contaminated by dirt or other foreign matter.
●Disassembly should be done in a clean work area.
●Use lint-free cloth or towels for wiping parts clean. Common
shop rags can leave fibers that could interfere with the operation
of the transaxle.
●Place disassembled parts in order for easier and proper assembly.
●All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or
reassembly.
●Gaskets, seals and O-rings should be replaced any time the transaxle is disassembled.
●It is very important to perform functional tests whenever they are indicated.
●The valve body contains precision parts and requires extreme care when parts are removed and serviced.
Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent
springs and small parts from becoming scattered or lost.
●Properly installed valves, sleeves, plugs, etc. will slide along bores in valve body under their own weight.
●Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings
and seals, or hold bearings and washers in place during assembly. Do not use grease.
●Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.
●After overhaul, refill the transaxle with new ATF.
●When the A/T drain plug is removed, only some of the fluid is drained. Old A/T fluid will remain in torque
converter and ATF cooling system.
Always follow the procedures under “Changing A/T Fluid” in the AT section when changing A/T fluid. Refer
to “Changing A/T Fluid”, AT-13, "
A/T FLUID" .
Service Notice or PrecautionsECS004Q3
FA I L - S A F E
The TCM has an electronic Fail-Safe (limp home mode). This allows the vehicle to be driven even if a major
electrical input/output device circuit is damaged.
Under Fail-Safe, the vehicle always runs in third gear, even with a shift lever position of “1”, “2” or “D”. The cus-
tomer may complain of sluggish or poor acceleration.
When the ignition key is turned “ON” following Fail-Safe operation, O/D OFF indicator lamp blinks for about 8
seconds. Refer to AT- 2 5 3 , "
SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-II)" (EXCEPT FOR
EURO-OBD) or AT-51, "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)" (EURO-OBD).
The blinking of the O/D OFF indicator lamp for about 8 seconds will appear only once and be cleared. The
customer may resume normal driving conditions.
Always follow the “WORK FLOW”, refer to AT-262, "
Work Flow" (EXCEPT FOR Euro-OBD) or AT- 6 0 , "Work
Flow" (Euro-OBD).
The SELF-DIAGNOSIS results will be as follows:
●The first SELF-DIAGNOSIS will indicate damage to the vehicle speed sensor or the revolution sensor.
●During the next SELF-DIAGNOSIS, performed after checking the sensor, no damages will be indicated.
TORQUE CONVERTER SERVICE
The torque converter should be replaced under any of the following conditions:
●External leaks in the hub weld area.
●Converter hub is scored or damaged.
●Converter pilot is broken, damaged or fits poorly into crankshaft.
●Steel particles are found after flushing the cooler and cooler lines.
●Pump is damaged or steel particles are found in the converter.
●Vehicle has TCC shudder and/or no TCC apply. Replace only after all hydraulic and electrical diagnoses
have been made. (Converter clutch material may be glazed.)
SAT652J

A/T FLUID
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A/T FLUIDPFP:KLE40
Checking A/T FluidECS004Q7
1. Warm up engine.
2. Check for fluid leakage.
3. Before driving, fluid level can be checked at fluid temperatures
of 30 to 50°C (86 to 122°F) using “COLD” range on dipstick.
a. Park vehicle on level surface and set parking brake.
b. Start engine and move selector lever through each gear posi-
tion. Leave selector lever in “P” position.
c. Check fluid level with engine idling.
d. Remove dipstick and note reading. If level is at low side of either
range, and fluid to the charging pipe.
e. Re-insert dipstick into charging pipe as far as it will go.
f. Remove dipstick and note reading. If reading is at low side of range, add fluid to the charging pipe.
Do not overfill.
4. Drive vehicle for approximately 5 minutes in urban areas.
5. Re-check fluid level at fluid temperatures of 50 to 80°C (122 to 176°F) using “HOT” range on dipstick.
6. Check fluid condition.
●If fluid is very dark or smells burned, refer to AT section for
checking operation of A/T. Flush cooling system after repair of
A/T.
●If A/T fluid contains frictional material (clutches, bands, etc.),
replace radiator and flush cooler line using cleaning solvent
and compressed air after repair of A/T. Refer to CO-11,
"RADIATOR" , CO-14, "RADIATOR (ALUMINUM TYPE)" .
Changing A/T FluidECS004Q8
1. Warm up A/T fluid.
2. Stop engine.
3. Drain A/T fluid from drain plug and refill with new A/T fluid.
Always refill same volume with drained fluid.
4. Run engine at idle speed for five minutes.
5. Check fluid level and condition. Refer to “Checking A/T Fluid”. If fluid is still dirty, repeat steps 2 through 5.
SMA827CA
SMA853B
Fluid grade:
Genuine Nissan ATF or equivalent. Refer to MA-
16, "RECOMMENDED FLUIDS AND LUBRI-
CANTS" .
Fluid capacity (With torque converter):
Approx. 8.5 (7-1/2 lmp qt)
Drain plug:
: 29 - 39 N·m (3.0 - 4.0 kg-m, 22 - 29 ft-lb)
SMA027D

ATC-2
DEFROSTER (DEF) SWITCH ............................. 30
MODE SWITCH ................................................... 30
FAN SWITCH ...................................................... 30
OFF SWITCH ...................................................... 30
FRESH (FRE) SWITCH ....................................... 30
RECIRCULATION (REC) SWITCH ..................... 30
Discharge Air Flow ................................................. 31
System Description ................................................. 32
SWITCHES AND THEIR CONTROL FUNCTION ... 32
TROUBLE DIAGNOSIS ............................................ 33
How to Perform Trouble Diagnoses for Quick and
Accurate Repair ...................................................... 33
WORK FLOW ...................................................... 33
SYMPTOM TABLE .............................................. 33
Component Parts and Harness Connector Location ... 34
ENGINE COMPARTMENT .................................. 34
PASSENGER COMPARTMENT .......................... 35
Circuit Diagram ....................................................... 36
WITH GASOLINE ENGINE ................................. 36
WITH DIESEL ENGINE ....................................... 37
Wiring Diagram ....................................................... 38
WITH GASOLINE ENGINE ................................. 38
WITH DIESEL ENGINE ....................................... 41
Auto Amp. Terminals and Reference Value ............ 44
PIN CONNECTOR TERMINAL LAYOUT ............ 44
AUTO AMP. INSPECTION TABLE ...................... 44
Self-diagnosis Function .......................................... 46
DESCRIPTION .................................................... 46
PROCEDURE ...................................................... 47
AUXILIARY MECHANISM: TEMPERATURE
SETTING TRIMMER ........................................... 52
AUXILIARY MECHANISM: FOOT POSITION
SETTING TRIMMER ........................................... 53
AUXILIARY MECHANISM: INLET PORT MEM-
ORY FUNCTION (FOR LHD MODELS) .............. 54
Operational Check .................................................. 54
CHECKING MEMORY FUNCTION ..................... 54
CHECKING BLOWER ......................................... 55
CHECKING DISCHARGE AIR ............................ 55
CHECKING RECIRCULATION ............................ 55
CHECKING TEMPERATURE DECREASE ......... 56
CHECKING TEMPERATURE INCREASE .......... 56
CHECKING AUTO MODE ................................... 56
Power Supply and Ground Circuit for Auto Amp. ... 57
INSPECTION FLOW ........................................... 57
COMPONENT DESCRIPTION ............................ 57
DIAGNOSTIC PROCEDURE .............................. 58
LAN System Circuit ............................................. ... 59
DIAGNOSTIC PROCEDURE .............................. 59
Mode Door Motor Circuit ........................................ 62
INSPECTION FLOW ........................................
... 62
SYSTEM DESCRIPTION .................................... 63
COMPONENT DESCRIPTION ............................ 64
DIAGNOSTIC PROCEDURE .............................. 64
Air Mix Door Motor Circuit ...................................... 64
INSPECTION FLOW ........................................... 65
SYSTEM DESCRIPTION .................................... 66
COMPONENT DESCRIPTION ............................ 66
DIAGNOSTIC PROCEDURE .............................. 67Intake Door Motor Circuit ........................................ 68
INSPECTION FLOW ............................................ 68
SYSTEM DESCRIPTION ..................................... 69
COMPONENT DESCRIPTION ............................ 69
DIAGNOSTIC PROCEDURE ............................... 70
Blower Motor Circuit ................................................ 70
INSPECTION FLOW ............................................ 71
SYSTEM DESCRIPTION ..................................... 72
COMPONENT DESCRIPTION ............................ 74
DIAGNOSTIC PROCEDURE ............................... 74
COMPONENT INSPECTION ............................... 77
Magnet Clutch Circuit .............................................. 78
INSPECTION FLOW ............................................ 78
SYSTEM DESCRIPTION ..................................... 79
DIAGNOSTIC PROCEDURE ............................... 79
COMPONENT INSPECTION ............................... 84
Insufficient Cooling .................................................. 86
INSPECTION FLOW ............................................ 86
PERFORMANCE TEST DIAGNOSES ................ 88
PERFORMANCE CHART .................................... 90
TROUBLE DIAGNOSES FOR UNUSUAL PRES-
SURE ................................................................... 92
Insufficient Heating ................................................. 95
INSPECTION FLOW ............................................ 95
Noise ....................................................................... 97
INSPECTION FLOW ............................................ 97
Self-diagnosis ......................................................... 98
INSPECTION FLOW ............................................ 98
Memory Function .................................................... 99
INSPECTION FLOW ............................................ 99
Ambient Sensor Circuit .........................................100
COMPONENT DESCRIPTION ..........................100
AMBIENT TEMPERATURE INPUT PROCESS .100
DIAGNOSTIC PROCEDURE .............................100
COMPONENT INSPECTION .............................102
In-vehicle Sensor Circuit .......................................102
COMPONENT DESCRIPTION ..........................102
DIAGNOSTIC PROCEDURE .............................103
COMPONENT INSPECTION .............................104
Sunload Sensor Circuit .........................................105
COMPONENT DESCRIPTION ..........................105
SUNLOAD INPUT PROCESS ...........................105
DIAGNOSTIC PROCEDURE .............................105
COMPONENT INSPECTION .............................107
Intake Sensor Circuit .............................................108
COMPONENT DESCRIPTION ..........................108
DIAGNOSTIC PROCEDURE .............................108
CONTROLLER ........................................................ 111
Removal and Installation .......................................111
Disassembly and Assembly ..................................111
AMBIENT SENSOR ................................................112
Removal and Installation .......................................112
IN-VEHICLE SENSOR ............................................113
Removal and Installation .......................................113
SUNLOAD SENSOR ...............................................114
Removal and Installation .......................................114
INTAKE SENSOR CIRCUIT ....................................115
Removal and Installation .......................................115
BLOWER UNIT ........................................................116

ATC-3
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AT C Removal and Installation ....................................... 116
REMOVAL .......................................................... 116
INSTALLATION .................................................. 116
Disassembly and Assembly .................................. 117
BLOWER MOTOR ...................................................118
Removal and Installation ....................................... 118
INTAKE DOOR MOTOR ..........................................119
Removal and Installation ....................................... 119
FAN CONTROL AMPLIFIER .................................. 120
Removal and Installation ...................................... 120
VENTILATION AIR FILTER .................................... 121
Removal and Installation ...................................... 121
FUNCTION ........................................................ 121
REPLACEMENT TIMING .................................. 121
REPLACEMENT AND PROCEDURES ............ 121
CLEANING ....................................................... . 121
HEATER & COOLING UNIT ASSEMBLY .............. 122
Removal and Installation ...................................... 122
REMOVAL ......................................................... 122
INSTALLATION ................................................. 123
Disassembly and Assembly ................................. 123
MODE DOOR MOTOR ........................................... 124
Removal and Installation ...................................... 124
AIR MIX DOOR MOTOR ......................................... 125
Removal and Installation ...................................... 125
HEATER CORE ...................................................... 126
Removal and Installation ...................................... 126
DUCTS AND GRILLES .......................................... 127
Removal and Installation ...................................... 127
VENTILATOR DUCT, DEFROSTER NOZZLE
AND DEFROSTER DUCTS .............................. 127
CENTER VENTILATOR GRILLE ...................... 127
SIDE VENTILATOR GRILLE ............................. 127
FOOT DUCT ..................................................... 128
FLOOR DUCT ................................................... 128
REFRIGERANT LINES ........................................... 129
HFC-134a (R-134a) Service Procedure ............... 129
SETTING OF SERVICE TOOLS AND EQUIP-
MENT ................................................................ 129
Components ......................................................... 131
WITH GASOLINE ENGINE ............................... 131
WITH DIESEL ENGINE .................................... 132
Removal and Installation for Compressor ............ 132REMOVAL .........................................................132
INSTALLATION .................................................134
Removal and Installation for Compressor Clutch . 135
REMOVAL .........................................................135
INSTALLATION .................................................138
Removal and Installation for Low-pressure flexible
hose ......................................................................141
REMOVAL .........................................................141
INSTALLATION .................................................141
Removal and Installation for High-pressure flexible
hose ......................................................................142
REMOVAL .........................................................142
INSTALLATION .................................................142
Removal and Installation for High-pressure pipe ..142
REMOVAL .........................................................142
INSTALLATION .................................................142
Removal and Installation for Refrigerant Pressure
Sensor ..................................................................143
Removal and Installation for Dual-pressure Switch .143
Removal and Installation for Condenser ..............143
REMOVAL .........................................................143
INSTALLATION .................................................144
Removal and Installation for Evaporator ..............145
REMOVAL .........................................................145
INSTALLATION .................................................145
Removal and Installation for Expansion Valve ......146
Removal and Installation for Liquid Tank ..............146
REMOVAL .........................................................146
INSTALLATION .................................................146
Checking for Refrigerant Leaks ............................146
Checking System for Leaks Using the Fluorescent
Leak Detector .......................................................147
Dye Injection .........................................................147
Electronic Refrigerant Leak Detector ....................147
PRECAUTIONS FOR HANDLING LEAK
DETECTOR .......................................................147
CHECKING PROCEDURE ...............................148
SERVICE DATA AND SPECIFICATIONS (SDS) ....150
COMPRESSOR ....................................................150
LUBRICANT .........................................................150
REFRIGERANT ....................................................150
ENGINE IDLING SPEED ......................................150
BELT TENSION ................................................... .150

PRECAUTIONS
ATC-5
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General Refrigerant PrecautionsEJS000T2
WARNING:
●Do not release refrigerant into the air. Use approved recovery/recycling equipment to capture the
refrigerant every time an air conditioning system is discharged.
●Always wear eye and hand protection (goggles and gloves) when working with any refrigerant or
air conditioning system.
●Do not store or heat refrigerant containers above 52°C (125°F).
●Do not heat a refrigerant container with an open flame; if container warming is required, place the
bottom of the container in a warm pail of water.
●Do not intentionally drop, puncture, or incinerate refrigerant containers.
●Keep refrigerant away from open flames: poisonous gas will be produced if refrigerant burns.
●Refrigerant will displace oxygen, therefore be certain to work in well ventilated areas to prevent
suffocation.
●Do not pressure test or leak test HFC-134a (R-134a) service equipment and/or vehicle air condi-
tioning systems with compressed air during repair. Some mixtures of air and HFC-134a (R-134a)
have been shown to be combustible at elevated pressures. These mixtures, if ignited, may cause
injury or property damage. Additional health and safety information may be obtained from refriger-
ant manufacturers.
Lubricant PrecautionsEJS0027Y
●Use only specified lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) components.
If lubricant other than that specified is used, compressor malfunction is likely to occur.
●The specified HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The following
handling precautions must be observed:
●When removing refrigerant components from a vehicle, immediately cap (seal) the component to minimize
the entry of moisture from the atmosphere.
●When installing refrigerant components to a vehicle, do not remove the caps (unseal) until just before con-
necting the components. Connect all refrigerant loop components as quickly as possible to minimize the
entry of moisture into system.
●Only use the specified lubricant from a sealed container. Immediately reseal containers of lubricant. With-
out proper sealing, lubricant will become moisture saturated and should not be used.
●Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and throat.
Remove HFC-134a (R-134a) from the A/C system, using certified service equipment meeting require-
ments of SAE J2210 HFC-134a (R-134a) recycling equipment, or J2209 HFC-134a (R-134a) recovery
equipment. If accidental system discharge occurs, ventilate work area before resuming service. Additional
health and safety information may be obtained from refrigerant and lubricant manufacturers.
●Do not allow lubricant (Nissan A/C System Oil Type S or R) to come in contact with styrofoam parts. Dam-
age may result.
Precautions for Refrigerant ConnectionEJS000T4
A new type refrigerant connection has been introduced to all refrigerant lines except the following location.
●Expansion valve to cooling unit
●Refrigerant pressure sensor to liquid tank

PRECAUTIONS
ATC-7
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O-RING AND REFRIGERANT CONNECTION
With Gasoline Engine
NOTE:
This illustration is for RHD models. The blower and heater & cooling unit layouts for LHD models are symmet-
rically opposite.
RJIA0674E