2001 NISSAN PICK-UP Repair Manual

INSPECTION
1. Check valve seating condition at ordinary room tempera-
tures. It should seat tightly.
2. Check valve opening temperature and maximum valve lift.
Standard
Valve opening temperature Above 80 - 84ÉC (176 - 183ÉF)
Valve lift More than 10 mm/95ÉC
(0.39 in/203ÉF)
3. Then check if valve closes at 5ÉC (9ÉF) below valve opening
temperature.
Radiator
REMOVAL AND INSTALLATION
1. Remove under guard.
2. Drain engine coolant. Refer to MA section, ªChanging Engine
Coolantº.
3. Remove radiator shroud (lower).
4. Remove radiator shroud (upper).
5. Disconnect radiator hose (upper and lower).
6. Disconnect reservoir tank hose.
7. Remove radiator.
8. After repairing or replacing radiator, install all removed parts
in reverse order of removal.
SLC252B
SLC481B
ENGINE COOLING SYSTEMYD25DDTi
Thermostat and Water Piping (Cont'd)
LC-3015

Cooling Fan (Crankshaft driven)
DISASSEMBLY AND INSTALLATION
1. Cooling fan 2. Coupling
+Do not release the drive belt tension by removing the fan/
water pump pulley.
+Fan coupling cannot be disassembled and should be
replaced as a unit. If front mark
VFis present, install fan so
that side marked
VFfaces the front.
+Proper alignment of these components is essential. Improper
alignment will cause them to wobble and may eventually
cause the fan to separate from the water pump causing
extensive damage.
Cooling Fan (Motor driven)
REMOVAL AND INSTALLATION
1. Remove front grille.
2. Disconnect harness connector from fan motor.
3. Remove cooling fan.
CAUTION:
Take care to avoid scratching or damaging the air condi-
tioner condenser.
4. Install in the reverse order of removal.
SLC482B
SLC460BA
ENGINE COOLING SYSTEMYD25DDTi
LC-3016

COOLING FAN CONTROL SYSTEM
Cooling fan is controlled by ECM. For details, refer to EC section,
ªDTC 0208 OVERHEATº.
ENGINE COOLING SYSTEMYD25DDTi
Cooling Fan (Motor driven) (Cont'd)
LC-3017

Engine Lubrication System
OIL PRESSURE CHECK
Engine speed
rpmApproximate discharge pressure
kPa (bar, kg/cm2, psi)
Idle speed More than 140 (1.40, 1.43, 20.3)
2,000 More than 270 (2.69, 2.75, 39.1)
4,000 More than 430 (4.29, 4.38, 62.3)
OIL PUMP
Unit: mm (in)
Housing to outer rotor radial
clearance10.114 - 0.260
(0.0045 - 0.0102)
Inner rotor to outer rotor tip
clearance2Below 0.180 (0.0071)
Housing to inner rotor axial
clearance30.050 - 0.090
(0.0020 - 0.0035)
Housing to outer rotor axial
clearance40.030 - 0.190
(0.0012 - 0.0075)
Inner rotor to brazed portion
of housing clearance50.045 - 0.091
(0.0018 - 0.0036)
OIL PUMP REGULATOR VALVE
Unit: mm (in)
Regulator valve to oil pump
cover clearance60.040 - 0.097
(0.0016 - 0.0038)
Engine Cooling System
RADIATOR
Unit: kPa (bar, kg/cm2, psi)
Cap relief
pressureStandard78-98
(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)
THERMOSTAT
Valve opening temperatureAbove 80 - 84ÉC
(176 - 183ÉF)
Valve liftMore than 10 mm/95ÉC
(0.394 in/203ÉF)
SERVICE DATA AND SPECIFICATIONS (SDS)YD25DDTi
LC-3018

ALPHABETICAL INDEX
SECTION
IDX
IDX

A
A/C relay ..................................... HA-3019, 3029
A/C trouble diagnoses (auto A/C) ......... HA-3020
A/C trouble diagnoses
(manual A/C) ........................... HA-3004, 3020
A/C, A - Wiring diagram ........................ HA-3021
A/C, M - Wiring diagram ............. HA-3006, 3009
A/T IND - Wiring diagram ...................... EL-3100
AAC/V - Wiring diagram ....................... EC-3298
ABS - Wiring diagram ................. BR-3003, 3010
AT indicator lamp .................................. EL-3100
Accelerator control system .................... FE-3002
Accelerator position sensor ........ EC-3515, 3516
Air bag disposal .................................... RS-3011
Air bag ................................................... RS-3003
Air cleaner filter replacement ..... MA-3010, 3019
Air conditioner cut control . EC-3028, 3413, 3414
Air flow meter - See Mass air flow
sensor ................................................ EC-3151
Alternator ............................................... EL-3022
Angular tightening application .............. EM-3003
Antenna ................................................. EL-3115
Anti-lock brake system - Wiring
diagram ......................... BR-3002, 3003, 3009
Auxiliary air control (AAC) valve ........... EC-3295
B
BACK/L - Wiring diagram ...................... EL-3044
BOOST - Wiring diagram ....................................
Back-up lamp ......................................... EL-3044
Basic inspection ................ EC-3086, 3444, 3445
Battery ................................................... EL-3013
Bumper, front ....................................... BT-3002
C
CHARGE - Wiring diagram ................... EL-3018
CIGAR - Wiring diagram ....................... EL-3110
CKPS - Wiring diagram .............. EC-3266, 3351
CLOCK - Wiring diagram ...................... EL-3111
CMPS - Wiring diagram ........................ EC-3273
CONSULT for engine ....... EC-3070, 3434, 3435
Camshaft inspection ............................. EM-3050
Camshaft position sensor (CMPS) ....... EC-3270
Canister - See EVAP canister .............. EC-3029
Center case (Transfer) .......................... TF-3003
Charging system .................................... EL-3018
Cigarette lighter ..................................... EL-3110
Clock ...................................................... EL-3111
Closed throttle position switch ............. EC-3301
Collision diagnosis ................................ RS-3037
Combination lamp, front, removal and
installation .......................................... BT-3002
Combination meter ................................ EL-3056
Compression pressure ......................... EM-3013
Connecting rod bearing clearance ....... EM-3077Connecting rod bushing clearance ....... EM-3080
Connecting rod ..................................... EM-3072
Coolant replacement ............................ MA-3014
Cooling circuit (engine) ......................... LC-3010
Cooling fan control system ......... LC-3002, 3017
Cooling fan control ........... EC-3344, 3489, 3490
Cooling fan ............................................ LC-3016
Counter gear (Transfer) ......................... TF-3004
Crank angle sensor built into
distributor - See Camshaft position
sensor ................................................ EC-3270
Crankcase emission control system -
See Positive crankcase
ventilation ...................... EC-3032, 3414, 3415
Crankcase ventilation system - See
Positive crankcase
ventilation ...................... EC-3032, 3414, 3415
Crankshaft position sensor (OBD) cog
chipping ............................................. EC-3349
Crankshaft position sensor (OBD) ........ EC-3264
Crankshaft position sensor
(TDC) ...................................... EC-3534, 3535
Crankshaft ............................................ EM-3075
Cylinder block ....................................... EM-3066
Cylinder head ....................................... EM-3046
D
DEF - Wiring diagram ............................ EL-3112
DIMDIP - Wiring diagram ...................... EL-3033
DTC P0121 TP Sensor ........................ EC-3170
DTC work support ................................. EC-3078
DTRL - Wiring diagram ......................... EL-3029
Data link connector for
Consult .......................... EC-3033, 3434, 3435
Daytime light system ............................. EL-3029
Detonation sensor - See Knock
sensor ................................................ EC-3260
Diagnosis sensor unit ........................... RS-3005
Diagnostic trouble code (DTC) for
OBD system .................. EC-3009, 3428, 3429
Diagnostic trouble code (DTC) inspec-
tion priority chart ............................... EC-3100
Dim-dip lamp system ............................. EL-3033
Distributor ignition (DI) system ............. EC-3026
Distributor .............................................. EC-3026
Drive belt inspection ............................. MA-3011
Drive chain (Transfer) ............................ TF-3004
E
ECCS-D control
module ......... EC-3595, 3594, 3598, 3599, 3463,
3464, 3501, 3502, 3581, 3582,
3583, 3584, 3585, 3586
ECM input/output signal ... EC-3110, 3463, 3464
ECTS - Wiring diagram ......................... EC-3167
EGR - Wiring diagram ................ EC-3607, 3608
ALPHABETICAL INDEX
IDX-3002

EGR volume control valve .......... EC-3605, 3606
EVAP canister purge volume control
solenoid valve ................................... EC-3283
EVAP canister ....................................... EC-3029
Electrical ignition system ...................... EC-3026
Electronic fuel injection
pump ........ EC-3419, 3420, 3508, 3509, 3542,
3543, 3549, 3550, 3556, 3557,
3563, 3564, 3570, 3571, 3573,
3574, 3614, 3615
Engine control circuit
diagram ......................... EC-3020, 3408, 3409
Engine control component parts
location .............................................. EC-3018
Engine control module (ECM) .............. EC-3308
Engine control system diagram and
chart .............................. EC-3021, 3409, 3410
Engine coolant temperature sensor
(ECTS) .......................... EC-3165, 3480, 3481
Engine fail-safe system ......................... EC-3101
Engine oil filter replacement ................. MA-3013
Engine oil replacement ......................... MA-3012
Engine outer component parts ............. EM-3008
Engine removal ..................................... EM-3063
Engine serial number ............................. GI-3006
Evaporative emission (EVAP)
system ............................................... EC-3029
Exhaust system ..................................... FE-3005
Exterior .................................................. BT-3006
F
F/PUMP - Wiring diagram ..................... EC-3380
FICD - Wiring diagram .......................... EC-3390
FUEL - Wiring diagram ............... EC-3239, 3246
Fast idle cam (FIC) ............................... EC-3035
Fluids .................................................... MA-3008
Flywheel runout .................................... EM-3080
Fog lamp, rear ....................................... EL-3045
Freeze frame data ................................ EC-3050
Front bumper ......................................... BT-3002
Front case (Transfer) ............................. TF-3003
Front combination lamp removal and
installation .......................................... BT-3002
Front drive shaft (Transfer) ................... TF-3004
Front passenger air bag ............. RS-3003, 3009
Fuel cut control (at no load & high
engine speed) ............... EC-3028, 3413, 3414
Fuel filter replacement .......................... MA-3018
Fuel filter ............................................... EC-3033
Fuel injection system ................. EC-3237, 3244,
3411, 3412
Fuel injector .......................................... EC-3369
Fuel line inspection ............................... MA-3019
Fuel pressure check ............................. EC-3033
Fuel pressure regulator ......................... EC-3034
Fuel pressure release ........................... EC-3033
Fuel pump relay .................................... EC-3378
Fuel pump ............................................. EC-3378Fuel system ........................................... FE-3003
Fuel tank vacuum relief valve ............... EC-3030
Fuse block ............................................. EL-3199
G
Gauges .................................................. EL-3056
Generic scan tool (GST) ....................... EC-3080
Glow plug .................................... EC-3621, 3622
Glow relay ................................... EC-3621, 3622
Grease .................................................. MA-3008
H
H/AIM - Wiring diagram ......................... EL-3037
H/LAMP - Wiring diagram ..................... EL-3023
HEAT UP - Wiring diagram ........ EC-3639, 3640
HEATER - Wiring diagram .................... HA-3004
HLC - Wiring diagram ............................ EL-3108
HORN - Wiring diagram ........................ EL-3109
HSEAT - Wiring diagram ....................... EL-3118
Harness layout ....................................... EL-3166
Hazard warning lamp ............................ EL-3047
Headlamp aiming control ....................... EL-3037
Headlamp removal and installation ....... BT-3002
Headlamp washer .................................. EL-3108
Headlamp .............................................. EL-3023
Heat up switch ............................ EC-3638, 3639
Heated oxygen sensor (HO2S)
(front) ........ EC-3202, 3213, 3196, 3310, 3317
Heated oxygen sensor (HO2S) heater
(front) ................................................. EC-3133
Heated oxygen sensor (HO2S) heater
(rear) .................................................. EC-3138
Heated oxygen sensor
(rear) ................... EC-3220, 3227, 3324, 3334
Heated seat ........................................... EL-3118
Hood ...................................................... BT-3002
Horn ....................................................... EL-3109
How to erase DTC for OBD
system ........................... EC-3060, 3428, 3429
I
IACV-AAC valve .................................... EC-3295
IACV-FICD solenoid valve .................... EC-3389
IATS - Wiring diagram ...... EC-3162, 3505, 3506
ILL - Wiring diagram .............................. EL-3050
INJECT - Wiring diagram ...................... EC-3370
INT/L - Wiring diagram .......................... EL-3055
Idle air control (IAC) system ................. EC-3295
Idle air control valve (IACV) .................. EC-3295
Idle mixture ratio ................................... EC-3035
Idle speed ......................... EC-3035, 3444, 3445
Ignition control system .......................... EC-3361
Ignition timing ........................................ EC-3035
Illumination ............................................. EL-3050
ALPHABETICAL INDEX
IDX-3003

Injection nozzle ........................... EC-3415, 3416
Injector removal and installation ........... EC-3034
Intake air temperature
sensor ................. EC-3160, 3193, 3503, 3504
Intake manifold ..................................... EM-3008
Interior lamp ........................................... EL-3054
K
KS - Wiring diagram ............................. EC-3261
Keyless entry system - See Multi-re-
mote control system .......................... EL-3136
Knock sensor (KS) ...................... EC-3260, 3261
L
License lampEL148Parking lamp .......... EL-3039
Liquid gasket application ...................... EM-3003
Location of electrical units ..................... EL-3163
Lubricants ............................................. MA-3008
Lubrication circuit (engine) .................... LC-3003
M
M/T removal and installation ................ MT-3002
MAFS - Wiring diagram .............. EC-3146, 3154
MAIN - Wiring diagram ..... EC-3124, 3470, 3471
METER - Wiring diagram ...................... EL-3062
MIL & Data link connectors circuit ........ EC-3396
MIL/DL - Wiring diagram .. EC-3396, 3646, 3647
MIRROR - Wiring diagram .................... EL-3116
MULTI - Wiring diagram ........................ EL-3137
Main gear (Transfer) .............................. TF-3004
Mainshaft (Transfer) .............................. TF-3004
Maintenance (engine) ................. MA-3010, 3011
Malfunction indicator lamp
(MIL) ........................................ EC-3429, 3430
Manifold tightening torque (intake &
exhaust) ............................................ MA-3011
Mass air flow sensor
(MAFS) .................... DT-3143, EC-3143, 3151
Meter ...................................................... EL-3056
Misfire .................................................... EC-3251
Model variation ....................................... GI-3004
Mud guard - See Exterior ...................... BT-3006
Multi-remote control system .................. EL-3136
Multiport fuel injection (MFI) system ..... EC-3024
N
NATS (Nissan Anti-theft System) .......... EL-3143
NATS - Wiring diagram ......................... EL-3146
Neutral position switch .......................... EC-3355
O
Oil change (capacity) ............................ MA-3008
Oil cooler (engine) ................................. LC-3006
Oil pan (engine) .................................... EM-3015
Oil pressure (engine) ............................. LC-3004
Oil pump (engine) .................................. LC-3004
Oil pump regulator valve (engine) ......... LC-3005
On board diagnostic
system ........................... EC-3049, 3428, 3429
P
P/ANT - Wiring diagram ........................ EL-3115
PCV (positive crankcase
ventilation) ..................... EC-3032, 3414, 3415
PCV filter replacement ......................... MA-3010
PGC/V - Wiring diagram ....................... EC-3286
PNP/SW - Wiring diagram .................... EC-3358
POWER - Wiring diagram ..................... EL-3006
PST/SW - Wiring diagram .................... EC-3386
Park/Neutral position
switch ............................ EC-3355, 3633, 3634
Parking lamp .......................................... EL-3039
Piston assembly ................................... EM-3081
Piston pin inspection ............................ EM-3071
Piston ring inspection ........................... EM-3071
Piston to bore clearance ...................... EM-3073
Power door mirror .................................. EL-3116
Power steering oil pressure switch ....... EC-3385
Power supply routing ............................. EL-3005
Power transistor & ignition coil ............. EC-3361
Power window ....................................... EL-3120
Priming pump .............................. EC-3444, 3445
Q
Quick-glow system ...................... EC-3621, 3622
R
R/FOG - Wiring diagram ....................... EL-3045
ROOM/L - Wiring diagram ..................... EL-3054
Radiator fan - See Cooling fan ............. LC-3016
Radiator ................................................. LC-3015
Rear case (Transfer) ............................. TF-3003
Rear fog lamp ........................................ EL-3045
Rear window defogger .......................... EL-3112
Refrigerant connection precaution ........ HA-3002
Refrigerant lines .................................... HA-3030
Road wheel size ..................................... GI-3007
Room lamp ............................................ EL-3054
ALPHABETICAL INDEX
IDX-3004