heater NISSAN X-TRAIL 2001 Service Repair Manual

MTC-26
HEATER CORE
HEATER CORE
PFP:27140
Removal and InstallationEJS000XV
1. Remove the heater unit.
2. Remove the heater pipe support.
3. Remove the foot duct and heater core cover.
4. Remove the heater core from the heater unit.
RJIA0069E

MTC-30
DUCTS AND GRILLES
FOOT DUCT
1. Remove the heater unit. Refer to MTC-24, "HEATER UNIT" .
2. Remove the foot duct.
FLOOR DUCT
1. Remove the front seats. Refer to SE-7, "FRONT SEAT" .
2. Remove the instrument lower center panel. Refer to IP-5,
"Removal and Installation" .
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

ILLUMINATION
LT-45
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ILLUMINATIONPFP:27545
System Description EKS003C7
Power is supplied at all times
●through 10A fuse [No. 31, located in the fuse and fusible link box]
●to 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
ESP 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

PG-60
HARNESS
Wiring Diagram Codes (Cell Codes)
EKS0032J
Use the chart below to find out what each wiring diagram code stands for.
Refer to the wiring diagram code in the alphabetical index to find the location (page number) of each wiring
diagram.
Code Section Wiring Diagram Name
1STSIG AT A/T 1st Signal
2NDSIG AT A/T 2nd Signal
3RDSIG AT A/T 3rd Signal
4THSIG AT A/T 4th Signal
4WD BRC 4WD Control system
A/C ATC Air Conditioner
ABS BRC ABS Control System
APPS EC Accelerator Pedal Position (APP) Sensor
APRSW EC Accelerator Pedal Released Position Sensor
AT/IND DI A/T Indicator
AUDIO AV Audio
BA/FTS AT A/T Fluid Temperature Sensor and TCM Power Supply
BACK/L LT Back-up Lamp
BRK/SW EC Brake Switch
CAN EC,AT CAN Communication Line
CAN LAN CAN System
CHARGE SC Charging System
CHIME DI Warning Chime
CIGAR WW Cigarette Lighter
CLOCK DI Clock
CKPS EC Crankshaft Position Sensor
CMPS EC Camshaft Position Sensor
COOL/F EC Cooling Fan Control
CRFPS EC Common Rail Fuel Pressure Sensor
D/LOCK BL Power Door Lock
DEF GW Rear Window Defogger
DTRL LT Headlamp - With Daytime Light System
ECM/PW EC ECM Power
ECMRLY EC ECM Relay
ECTS EC Engine Coolant Temperature Sensor
EGRC/V EC EGR Volume Control Valve
ENGSS AT Engine Speed Signal
ETC1 EC Electric Throttle Function
ETC2 EC Electric Throttle Control Motor Relay
ETC3 EC Electric Throttle Control Motor
F/FOG LT Front Fog Lamp
FIAR EC Fuel Injector Adjustment resister
FRO2 EC Heated Oxygen Sensor 1 (Front)
FRO2/H EC Heated Oxygen Sensor 1 Heater (Front)
FTS EC Fuel Temperature Sensor
FTS AT A/T Fluid Temperature Sensor

HARNESS
PG-61
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FUEL EC Fuel Injection System Function
GLOW EC Glow Control System
H/AIM LT Headlamp Aiming Control System
H/LAMP LT Headlamp
H/SEAT SE Heated Seat
HEATER MTC Heater System
HLC WW Headlamp Cleaner
HO2S1 EC Heated Oxygen Sensor 1 (Front)
HO2S1H EC Heated Oxygen Sensor 1 Heater (Front)
HO2S2 EC Heated Oxygen Sensor 2 (Rear)
HO2S2H EC Heated Oxygen Sensor 2 Heater (Rear)
HORN WW Horn
IATS EC Intake Air Temperature Sensor
IATSEN EC Intake Air Temperature Sensor
IGN/SG EC Ignition Signal
IGNSYS EC Ignition Signal
ILL LT Illumination
INJECT EC Injector
INT/L LT Map Lamp
IVC EC Intake Valve Timing Control Solenoid Valve
IVC/V EC Intake Valve Timing Control Solenoid Valve
KS EC Knock Sensor (KS)
LOAD EC Electrical Load Signal
LPSV AT Line Pressure Solenoid Valve
MAFS EC Mass Air Flow Sensor (MAFS)
MAIN EC, AT Main Power Supply and Ground Circuit
METER DI Meter and Gauge
MIL EC Malfunction Indicator Lamp
MIL/DL EC MIL and Data Link Connector
MIRROR GW Door Mirror
MULTI BL Multi-Remote Control System
NATS BL Nissan Anti-Theft System
NONDTC AT Non-Detective Items
OVRCSV AT Overrun Clutch Solenoid Valve
PGC/V EC EVAP Canister Purge Volume Control Solenoid Valve
PHASE EC Camshaft Position Sensor (PHASE)
PNP/SW EC, AT Park/Neutral Position (PNP) Switch
PNPSW1 EC Park/Neutral Position (PNP) Switch
POS EC Crankshaft Position Sensor (CKPS) (POS)
POWER PG Power Supply Routing
PRGVLV EC EVAP Canister Purge Volume Control Solenoid Valve
PRWIRE BL Theft Warning System (Pre-wire)
PS/SEN EC Power Steering Pressure Sensor
PST/SW EC Power Steering Oil Pressure SwitchCode Section Wiring Diagram Name

PG-62
HARNESS
R/FOG LT Rear Fog Lamp
ROOM/L LT Interior Room Lamp
RP/SEN EC Refrigerant Pressure Sensor
RRO2 EC Heated Oxygen Sensor 2 (Rear)
RRO2/H EC Heated Oxygen Sensor 2 Heater (Rear)
S/LOCK BL Super Lock
S/SIG EC Start Signal
S/WARN SB Seat Belt Warning System
SCTC/V EC Suction Control Valve
SHIFT AT A/T Shift Lock System
SROOF BL Sunroof
SRS SRS Supplemental Restraint System (SRS)
SSV/A AT Shift Solenoid Valve A
SSV/B AT Shift Solenoid Valve B
START SC Starting System
STOP/L LT Stop Lamp
T/MTR EC Throttle Control Motor
TAIL/L LT Parking, License and Tail Lamps
TCV AT Torque Converter Clutch Solenoid Valve
TM/RLY EC Throttle Control Motor Relay
TPS EC, AT Throttle Position Sensor
TURN LT Turn Signal and Hazard Warning Lamps
VDC BRC Vehicle Dynamics Control System
VIAS/V EC Variable Air Induction Control System
VSS EC Vehicle Speed Sensor (VSS)
VSSAT AT Vehicle Speed Sensor A/T (Revolution Sensor)
VSSMTR AT Vehicle Speed Sensor MTR
WARN DI Warning Lamps
WINDOW GW Power Window
WIP/R WW Rear Wiper and Washer
WIPER WW Front Wiper and WasherCode Section Wiring Diagram Name

MA-20
ENGINE MAINTENANCE (QR20DE·QR25DE)
2. Open drain plug on cylinder block.
3. Remove reservoir tank and drain engine coolant.
4. Check drained engine coolant for contaminants such as rust,
corrosion or discoloration.
If contaminated, flush engine cooling system. Refer to MA-21,
"FLUSHING COOLING SYSTEM" .
REFILLING ENGINE COOLANT
1. Install reservoir tank, radiator drain plug and cylinder block drain plug.
●Apply sealant to the thread of cylinder block drain plug.
Use Genuine Liquid Gasket or equivalent.
2. Fill radiator and reservoir tank to specified level.
●Use genuine Nissan engine coolant or equivalent in its
quality. Refer to MA-16, "
RECOMMENDED FLUIDS AND
LUBRICANTS" .
●Pour engine coolant slowly of less than 2 (1-3/4 lmp qt)
a minute to allow air in system to escape.
3. Warm up engine to normal operating temperature without radia-
tor cap installed.
●If engine coolant overflows radiator filler hole, install
radiator cap.
4. Run engine at 3,000 rpm for 10 seconds and return to idle speed
with radiator cap installed.
●Repeat two or three times.
Watch engine coolant temperature gauge so as not to overheat the engine.
5. Stop engine and cool down to less than approximately 50°C(122°F).
●Cool down using a fan to reduce the time.
●If necessary, refill radiator up to filler neck with engine coolant.
6. Refill reservoir tank to MAX level line with engine coolant.
7. Repeat steps 4 through 6 two or more times with radiator cap installed until engine coolant level no longer
drops.
8. Check cooling system for leaks with engine running.
9. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000
rpm with heater temperature controller set at several position between COOL and WARM.
●Sound may be noticeable at heater unit.
10. If sound is heard, bleed air from cooling system by repeating steps 4 through 6 until engine coolant level
no longer drops.
KBIA0163E
Cylinder block drain plug:
: 7.8 - 11.8 N·m (0.8 -1.2 kg-m , 69 - 104 in-lb)
Engine coolant capacity (With reservoir tank):
Approx. 7.1 (6-1/4 Imp qt)
SMA182B
Reservoir tank: 0.6 (1/2 lmp qt)
SMA412B

ENGINE MAINTENANCE (YD22DDTI)
MA-29
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3. Fill reservoir tank to specified level.
4. Warm up engine to normal operating temperature without radia-
tor cap installed.
●If engine coolant overflows radiator filler hole, install
radiator cap.
5. Run engine at 3,000 rpm for 10 seconds and return to idle speed
with radiator cap installed.
●Repeat two or three times.
Watch engine coolant temperature gauge so as not to overheat
the engine.
6. Stop engine and cool down to less than approximately
50°C(122°F).
●Cool down using a fan to reduce the time.
●If necessary, refill radiator up to filler neck with engine coolant.
7. Refill reservoir tank to MAX level line with engine coolant.
8. Repeat steps 5 through 7 two or more times with radiator cap installed until engine coolant level no longer
drops.
9. Check cooling system for leaks with engine running.
10. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000
rpm with heater temperature controller set at several position between COOL and WARM.
●Sound may be noticeable at heater unit.
11. If sound is heard, bleed air from cooling system by repeating steps 5 through 7 until engine coolant level
no longer drops.
●Clean excess engine 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
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure
engine 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.
●Be careful not to bend or damage the radiator fins.
●When 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.
●Use compressed air lower than 490 kpa (4.9 bar, 5 kg/cm2 , 71psi) and keep distance more than 30
cm(11.8 in).
SMA412B

IDX-5
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IDX
ALPHABETICAL INDEX
EC-1368
Fan control amp. ............................. ATC-74,ATC-120
Fan switch ........................................ ATC-30,MTC-17
FIAR - Wiring diagram ................................... EC-1526
Final drive (FF M/T) .............................. MT-21,MT-26
Final drive disassembly ................................... RFD-11
Final drive removal and installation ................. RFD-11
Finisher, interior - See Trim ...................... EI-23,EI-25
Finisher, rear panel .............................................. EI-22
Floor trim ............................................................. EI-28
Flow charts ......................................................... GI-23
Fluid temperature sensor (A/T) ........................ AT-121
Fluorescent leak detector .............................. ATC-147
Flywheel (clutch) ................................................ CL-15
Flywheel runout(QR20DE•QR25DE) ................. EM-97
Flywheel runout(YD22DDTi) ............................ EM-218
Fog lamp, front ................................................... LT-33
Fork rod (M/T) ....................................... MT-20,MT-25
Freeze frame data EC-48,EC-455,EC-780,EC-1142
FRO2 - Wiring diagram .................... EC-672,EC-1321
FRO2/H - Wiring diagram ................ EC-658,EC-1308
Front bumper ......................................................... EI-6
Front disc brake ................................................. BR-21
Front door ............................................................. BL-8
Front Door Trim ................................................... EI-23
Front fog lamp .................................................... LT-33
Front passenger air bag .................................. SRS-35
Front seat ............................................................ SE-7
Front seat belt ...................................................... SB-3
Front seat belt pre-tensioner .... SB-2,SRS-3,SRS-39
Front side air bag ............................................. SRS-36
Front suspension ............................................... FSU-5
Front washer ...................................................... WW-4
Front wiper ......................................................... WW-4
FTS - Wiring diagram .................................... EC-1497
Fuel check valve ................ EC-425,EC-746,EC-1112
Fuel cut control (at no load high engine speed) EC-37,
EC-447
,EC-769,EC-1133,EC-1401
Fuel filler lid ........................................................ BL-75
Fuel filter ........................................................ EC-1404
Fuel filter replacement(QR20DE•QR25DE) .......... FL-4
Fuel filter replacement(YD22DDTi) ....... FL-15,MA-31
Fuel gauge .................................................. DI-4,DI-24
Fuel injection control system ......................... EC-1399
Fuel injection system .......... EC-200,EC-206,EC-934,
EC-940
Fuel injector ................................................... EC-1472
Fuel injector adjustment resistor .................... EC-1525
Fuel injector and fuel tube(QR20DE•QR25DE) . EM-32
Fuel injector and fuel tube(YD22DDTi) ............ EM-144
Fuel leak ........................................................ EC-1529
Fuel line inspection(QR20DE•QR25DE) . FL-3,MA-22
Fuel line inspection(YD22DDTi) ............ FL-14,MA-30
Fuel pressure check EC-42,EC-452,EC-775,EC-1139
Fuel pressure release ........... EC-42,EC-452,EC-775,
EC-1139
Fuel pressure relief valve .............................. EC-1405
Fuel pump ......... EC-405,EC-726,EC-1092,EC-1366
Fuel pump and gauge(QR20DE•QR25DE) .......... FL-4
Fuel system(QR20DE•QR25DE) .......................... FL-3
Fuel system(YD22DDTi) ..................................... FL-14
Fuel tank(QR20DE•QR25DE) ............................... FL-9
Fuel tank(YD22DDTi) ......................................... FL-21
Fuel temperature sensor ................................ EC-1496
Fuse ................................................................... PG-12
Fuse and fusible link box ................................... PG-75
Fusible link ......................................................... PG-12
G
Gear components (M/T) ........................ MT-18
,MT-23
Generator ........................................................... SC-12
Generator - See Alternator ................................ SC-12
Generic scan tool (GST) .................... EC-104,EC-836
Glass ................................................... GW-44,GW-46
GLOW - Wiring diagram ................................ EC-1545
Glow plug ....................................................... EC-1544
Glow plug(YD22DDTi) .................................... EM-138
Glow relay ...................................................... EC-1544
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-15
Harness connector ............................................. PG-68
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-163,EC-169,EC-178,
EC-295
,EC-301,EC-534,EC-671,EC-899,EC-905,
EC-914
,EC-1023,EC-1029,EC-1229,EC-1320
Heated oxygen sensor 1 heater ........ EC-128,EC-657,
EC-860
,EC-1307
Heated oxygen sensor 2 .... EC-185,EC-192,EC-307,
EC-315
,EC-677,EC-921,EC-927,EC-1035,EC-1042,
EC-1326
Heated oxygen sensor 2 heater ........ EC-133,EC-662,
EC-865
,EC-1312
Heated seat ............................................... SE-3,SE-5
HEATER - Wiring diagram ................................ MTC-6
Heater and cooling unit (Heater core) ............ ATC-122
Heater mirror ..................................................... GW-15
Heater system - Wiring diagram ....................... MTC-6
Heater unit (heater core) .. ATC-126,MTC-24,MTC-26
HFC134a (R134a) system precaution ............... ATC-4
HFC134a (R134a) system service procedure ATC-129
HFC134a (R134a) system service tools .......... ATC-15
HFC134a system service equipment precaution ..........
ATC-10
HO2S1 - Wiring diaram ...... EC-130,EC-165,EC-172,