2001 NISSAN ALMERA N16 BT-25

Diagnosis Sensor Unit
REMOVAL AND INSTALLATIONNJRS0013CAUTION:
+Before servicing SRS, turn the ignition switch off, discon-
nect both battery cables and wait at least 3 minutes.
+The special bolts are coated with bonding agent while the
other bolt is for ground. Do not use old bolts after
removal; replace with new ones.
+Check diagnosis sensor unit for proper installation.
+Check diagnosis sensor unit to ensure it is free of
deformities, dents, cracks or rust. If they show any visible
signs of damage, replace them with new ones.
+Check diagnosis sensor unit brackets to ensure they are
free of deformities or rust.
+Replace diagnosis sensor unit if it has been dropped or
sustained an impact.
+After replacement of diagnosis sensor unit, perform self-
diagnosis for SRS. Refer to ªSRS Operation Checkº for
details. (RS-49)
SRS964
1. Disconnect driver, front passenger and front side air bag mod-
ule connectors. Also, disconnect front seat belt pre-tensioner
connector.
2. Remove console box. Refer to BT-25, ªINSTRUMENT PANEL
ASSEMBLYº.
3. Disconnect diagnosis sensor unit connector.
4. Remove ground bolt and diagnosis sensor unit fixing bolts.
Use TAMPER RESISTANT TORX (Size T50) to remove spe-
cial bolts.
NOTE:
+To install, reverse the removal procedure sequence.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Diagnosis Sensor Unit
RS-26

SRS824
Front Passenger Air Bag Module
REMOVALNJRS0018CAUTION:
+Before servicing SRS, turn the ignition switch off, discon-
nect both battery cables and wait for at least 3 minutes.
+Always work from the side of or under front passenger air
bag module.
1. Open the glove box lid.
2. Open the connector cover.
3. Disconnect front passenger air bag module connector from air
bag harness connector.
SRS825
4. Remove glove box assembly. Refer to BT-25, ªINSTRUMENT
PANEL ASSEMBLYº for details.
5. Remove glove box cover.
6. Remove front passenger air bag module fixing bolts.
Use TAMPER RESISTANT TORX (Size T50) to remove spe-
cial bolts.
Take out the front passenger air bag module from the instru-
ment panel.
+The front passenger air bag module is heavy and should be
supported using both hands during removal.
SRS570
CAUTION:
+Always place front passenger air bag module with pad
side facing upward.
+Do not attempt to disassemble front passenger air bag
module.
+Do not use old bolts after removal; replace with new
coated bolts.
+Do not insert any foreign objects (screwdriver, etc.) into
front passenger air bag module connector.
SBF814E
+Replace front passenger air bag module if it has been
dropped or sustained an impact.
+Do not expose the front passenger air bag module to tem-
peratures exceeding 90ÉC (194ÉF).
+Do not allow oil, grease or water to come in contact with
the front passenger air bag module.
+After front passenger air bag inflates, the front instrument
panel assembly should be replaced if damaged.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Front Passenger Air Bag Module
RS-32

Removal and InstallationNJBT0012CAUTION:
+Disconnect ground terminal from battery in advance.
+Disconnect air bag system line in advance.
+Never tamper with or force air bag lid open, as this may adversely affect air bag performance.
+Be careful not to scratch pad and other parts.
INSTRUMENT PANEL ASSEMBLY
Removal and Installation
BT-25

Heater & Cooling Unit (Heater Core)
REMOVALNJHA0193
RHA807H
1. Drain the cooling system. Refer to LC-17 (QG), LC-43 (YD),
ªChanging Engine Coolantº.
2. Discharge the A/C system. Refer to HA-84.
3. Disconnect the two heater hoses from inside the engine com-
partment.
4. Remove the blower unit. Refer to HA-95.
5. Remove the steering member assembly. Refer to BT-25,
ªInstrument Panel Assemblyº.
6. Remove the heater unit.
7. Separate the heater & cooling unit case, and remove the
heater core.
INSTALLATIONNJHA0194Install in the reverse order of removal.
When filling radiator with coolant, refer to LC-18 (QG), LC-43
(YD), ªRefilling Engine Coolantº.
Recharge the A/C system. Refer to HA-84.
RHA673H
A/C Evaporator
REMOVALNJHA02041. Discharge the A/C system. Refer to HA-84.
2. Disconnect the two refrigerant lines from the engine compart-
ment.
Cap the A/C lines to prevent moisture from entering the sys-
tem.
3. Remove the grommet cover, grommet and expansion valve
cover from the engine compartment.
4. Remove the glove box, instrument lower assist panel, instru-
ment lower cover and drink holder. Refer to BT-25.
SERVICE PROCEDURE
Heater & Cooling Unit (Heater Core)
HA-94

1. Remove the instrument panel assembly. Refer to BT-25,
ªInstrument Panel Assemblyº.
2. Disconnect the blower motor and resistor connector.
3. Remove blower unit.
INSTALLATIONNJHA0196Install in the reverse order of removal.
SERVICE PROCEDURE
Blower Unit (Cont'd)
HA-96

A
A/C HFC134a (R134a) system precaution . HA-2
A/C HFC134a (R134a) system service
procedure .............................................. HA-84
A/C HFC134a (R134a) system service
tools ....................................................... HA-11
A/C HFC134a system service equip-
ment precaution ....................................... HA-6
A/C air flow ............................................... HA-20
A/C component layout .............................. HA-18
A/C compressor clutch removal and
installation .............................................. HA-89
A/C compressor precaution ........................ HA-5
A/C compressor special service tool .......... HA-9
A/C control linkage adjustment
(manual A/C) ......................................... HA-47
A/C control operation (manual A/C) .......... HA-19
A/C diagnostic work flow
(manual A/C) ......................................... HA-39
A/C harness layout (manual A/C) ............. HA-22
A/C lubricant (R134a) ............................... HA-86
A/C operational check ............................... HA-40
A/C performance chart .............................. HA-77
A/C performance test diagnoses .............. HA-75
A/C relay ................................................... HA-72
A/C service data specification ................ HA-103
A/C switch ................................................. HA-73
A/C, M - Wiring diagram ........................... HA-27
A/CCUT - Wiring diagram ....................... EC-700
A/T - Wiring diagram - AT - 1ST .............. AT-205
A/T - Wiring diagram - AT - 2ND ............. AT-212
A/T - Wiring diagram - AT - 3RD ............. AT-218
A/T - Wiring diagram - AT - 4TH .............. AT-225
A/T - Wiring diagram - AT - BA/FTS ....... AT-165,
273
A/T - Wiring diagram - AT - ENG SS ...... AT-171,
199
A/T - Wiring diagram - AT - FTS .............. AT-189
A/T - Wiring diagram - AT - LPSV ... AT-176, 239
A/T - Wiring diagram - AT - MAIN ........... AT-121
A/T - Wiring diagram - AT -
OVRCSV ...................................... AT-153, 267
A/T - Wiring diagram - AT - PNP/SW ...... AT-183
A/T - Wiring diagram - AT - SSV/A .. AT-142, 246
A/T - Wiring diagram - AT - SSV/B .. AT-148, 252
A/T - Wiring diagram - AT - TCV ..... AT-159, 233
A/T - Wiring diagram - AT - TPS ..... AT-134, 259
A/T - Wiring diagram - AT - VSS/AT ....... AT-126,
195
A/T - Wiring diagram - AT -
VSSMTR ...................................... AT-130, 280
A/T control ............................................... EC-437
A/T diagnosis communication line .......... EC-361
A/T fluid temperature sensor ................... AT-192
A/T shift lock system - Wiring
diagram ................................................ AT-336
A/T shift lock system ................................ AT-335
A/T trouble diagnoses .......................... AT-67, 72AAC/V - Wiring diagram ................. EC-315, 420
ABS (anti-lock brake system) ................... BR-49
ABS - Wiring diagram ............................... BR-54
ABS sensor rotor ....................................... AX-24
APS - Wiring diagram ............................. EC-577
ATDIAG - Wiring diagram ............... EC-362, 438
Accelerator control system .................... FE-3, 15
Accelerator position sensor .................... EC-577
Air bag disposal ........................................ RS-35
Air bag precautions ...................................... GI-3
Air bag ....................................................... RS-20
Air bleeding (hydraulic clutch) ................... CL-10
Air bleeding for brake system ..................... BR-8
Air conditioner cut control ................. EC-32, 507
Air flow meter - See Mass air flow
sensor .......................................... EC-152, 566
Air mix door control linkage
adjustment ............................................. HA-49
Air spoiler, rear .......................................... BT-47
Alternator ................................................... SC-27
Angular tightening application .............. EM-4, 76
Antenna - See Power antenna ................ EL-162
Anti-lock brake system - Wiring
diagram .................................................. BR-54
Audio and A/C control removal and
installation - See Instrument panel ........ BT-25
Audio ........................................................ EL-149
Automatic transaxle number ...................... GI-41
Auxiliary air control (AAC) valve ..... EC-313, 418
B
Back-up lamp switch (M/T) ....................... MT-21
Back-up lamp ............................................. EL-58
Ball joint (front) .......................................... SU-13
Basic inspection ................................ EC-98, 536
Battery ......................................................... SC-3
Baulk ring (M/T) ............................ MT-31, 55, 93
Blower motor ............................................. HA-60
Blower resistor .......................................... HA-60
Board-on lift ................................................ GI-44
Body alignment .......................................... BT-74
Brake booster ............................................ BR-20
Brake fluid change ...................................... BR-7
Brake fluid level and line check .................. BR-7
Brake hydraulic line .................................... BR-9
Brake pedal ............................................... BR-12
Bulb specifications ................................... EL-366
Bumper, front .............................................. BT-7
Bumper, rear .............................................. BT-10
C
CHARGE - Wiring diagram ....................... SC-25
CHIME - Wiring diagram .......................... EL-115
CIGAR - Wiring diagram ......................... EL-136
CKPS - Wiring diagram .......... EC-274, 395, 587
CMPS - Wiring diagram .......................... EC-280
ALPHABETICAL INDEX
IDX-2

CONSULT for ABS .................................... BR-58
CONSULT for engine ........................ EC-81, 527
COOL/F - Wiring diagram ............... EC-337, 618
Camshaft inspection ......................... EM-36, 122
Camshaft position sensor (CMPS) ......... EC-278
Camshaft position sensor (PHASE) ........ EC-278
Canister - See EVAP canister ................... EC-33
Charging system ....................................... SC-24
Cigarette lighter ....................................... EL-136
Circuit breaker ........................................... EL-22
Closed throttle position switch ....... EC-321, 426
Clutch cover .............................................. CL-22
Clutch disc ................................................. CL-22
Clutch master cylinder ............................... CL-11
Clutch operating cylinder ........................... CL-14
Clutch pedal .............................................. CL-10
Clutch release bearing ........................ CL-17, 20
Clutch release mechanism .................. CL-17, 20
Clutch withdrawal lever ....................... CL-17, 20
Coil spring (front) ........................................ SU-9
Coil spring (rear) ....................................... SU-21
Collision diagnosis .................................... RS-71
Combination lamp, rear, removal and
installation .............................................. BT-47
Combination meter removal and instal-
lation - See Instrument panel ................ BT-25
Combination meter .................................... EL-89
Combination switch ................................... EL-37
Compression pressure ............................. EM-82
Compressor clutch removal and
installation .............................................. HA-89
Compressor precaution ............................... HA-5
Compressor special service tool ................. HA-9
Connecting rod bearing clearance ... EM-58, 150
Connecting rod bushing clearance ... EM-59, 152
Connecting rod ................................. EM-55, 145
Console box - See Instrument panel ......... BT-25
Control lever (M/T) .................................... MT-29
Control valve (A/T) ................................... AT-375
Converter housing installation ................. AT-347
Coolant mixture ratio ................................ MA-22
Cooling circuit (engine) ....................... LC-12, 36
Cooling fan control system .................. LC-17, 42
Cooling fan control .......................... EC-334, 618
Cooling fan motor ................................... EC-346
Cooling fan relay ..................................... EC-345
Coupling sleeve (M/T) .................. MT-31, 55, 93
Crankcase emission control system -
See Positive crankcase ventilation ...... EC-37,
508
Crankcase ventilation system - See
Positive crankcase ventilation ....... EC-37, 508
Crankshaft position sensor (OBD) .. EC-272, 394
Crankshaft position sensor (POS) .. EC-272, 394
Crankshaft position sensor (TDC) .......... EC-587
Crankshaft ........................................ EM-57, 148
Cylinder block ................................... EM-52, 139
Cylinder head .................................... EM-33, 118D
DEF - Wiring diagram .............................. EL-140
DTC work support ..................................... EC-90
Data link connector for Consult ........ EC-38, 527
Daytime light system ................................. EL-44
Detonation sensor - See Knock
sensor .................................................. EC-268
Diagnosis sensor unit ............................... RS-26
Diagnostic trouble code (DTC) for
OBD system .................... EC-10, 70, 492, 522
Diagnostic trouble code (DTC) inspec-
tion priority chart .................................. EC-122
Differential gear (FF A/T) ......................... AT-424
Differential gear (FF M/T) ...... MT-31, 43, 55, 93,
107
Dimensions ................................................. GI-43
Dome light - See Interior lamp .................. EL-76
Door glass ................................................. BT-17
Door lock ................................................... BT-21
Door mirror ................................................ BT-72
Door trim .................................................... BT-39
Door, front .................................................. BT-16
Door, rear ................................................... BT-16
Drive plate runout ..................................... EM-60
Drive shaft (front) ...................................... AX-10
Dropping resistor (A/T) .................... AT-180, 243
Dual pressure switch ................................ HA-13
E
ECCS-D control module ........ EC-554, 604, 664,
666, 670, 672
ECM input/output signal ................. EC-132, 554
ECTS - Wiring diagram ................... EC-165, 572
EGR control valve ................................... EC-359
EGR temperature sensor ........................ EC-347
EGR volume control valve ...................... EC-686
EGR/TS - Wiring diagram ....................... EC-350
EGRC1 - Wiring diagram ....... EC-289, 357, 403,
688
EVAP canister purge volume control
solenoid valve ........................................ EC-34
EVAP canister purge volume control
valve ............................................ EC-304, 411
EVAP canister ........................................... EC-34
Electric sunroof ........................................ EL-165
Electrical diagnoses ................................... GI-21
Electrical ignition system .......................... EC-31
Electrical load signal circuit ..................... EC-480
Electrical unit ........................................... EL-371
Electrical units location ............................ EL-319
Electronic fuel injection pump ........ EC-513, 606,
612, 634, 640, 646, 652, 658, 674
Engine compartment ................................. BT-75
Engine control circuit diagram .......... EC-25, 502
Engine control component parts
location .......................................... EC-21, 499
ALPHABETICAL INDEX
IDX-3

Heated oxygen sensor (HO2S) heater
(rear) ............................................ EC-243, 389
Heated oxygen sensor (rear) ......... EC-214, 222,
229, 237, 383
Heated seat ............................................. EL-163
Height (Dimensions) ................................... GI-43
High clutch ............................................... AT-394
Hood ............................................................ BT-7
Horn ......................................................... EL-135
How to erase DTC for OBD system .. EC-68, 71,
522
I
IACV-AAC valve .............................. EC-313, 418
IATS - Wiring diagram .................... EC-160, 370
IGN/SG - Wiring diagram ........................ EC-452
ILL - Wiring diagram .................................. EL-72
INJECT - Wiring diagram ........................ EC-447
INT/L - Wiring diagram .............................. EL-87
IVC - Wiring diagram ...................... EC-331, 433
Identification plate ...................................... GI-40
Idle air control (IAC) system ........... EC-313, 418
Idle air control valve (IACV) ............ EC-313, 418
Idle speed ......................................... EC-41, 536
Ignition timing ............................................ EC-41
Illumination ................................................. EL-71
Injection nozzle ....................................... EC-509
Injector removal and installation ............... EC-39
Input shaft (FF M/T) ............... MT-36, 64, 93, 98
Instrument panel ........................................ BT-25
Intake air temperature sensor ......... EC-158, 369
Intake valve timing control solenoid
valve ............................................ EC-329, 432
Interior lamp on-off control ........................ EL-77
Interior lamp ............................................... EL-76
Interior ........................................................ BT-31
J
Jacking points ............................................ GI-45
Joint connector (J/C) ............................... EL-372
Junction box (J/B) .................................... EL-369
K
Keyless entry system - See Multi-remote control
system ..................................................... EL-220
Knock sensor (KS) .......................... EC-268, 269
Knuckle spindle ........................................... AX-5
L
LOAD - Wiring diagram .......................... EC-481
Length (Dimensions) .................................. GI-43
License lamp ............................................. EL-53Lifting points ............................................... GI-46
Line pressure solenoid valve ................... AT-230
Line pressure test (A/T) ............................. AT-82
Liquid gasket application ...................... EM-4, 76
Location of electrical units ....................... EL-319
Lock, door .................................................. BT-21
Low and reverse brake ............................ AT-406
Lubricant (R134a) A/C .............................. HA-86
Lubricants ................................................. MA-20
Lubrication circuit (engine) .................... LC-4, 26
M
M/T major overhaul ....................... MT-30, 54, 92
M/T removal and installation ..................... MT-23
MAFS - Wiring diagram .................. EC-154, 566
MAIN - Wiring diagram ................... EC-145, 560
MAJOR OVERHALL ................................ AT-349
MIL & Data link connectors circuit .......... EC-488
MIL/DL - Wiring diagram ................. EC-488, 701
MIRROR - Wiring diagram ...................... EL-167
Magnet clutch ............................................ HA-89
Mainshaft (M/T) .................... MT-39, 69, 93, 103
Malfunction indicator lamp (MIL) ...... EC-72, 523
Manual air conditioner - Wiring
diagram .................................................. HA-27
Manual transaxle number .......................... GI-42
Mass air flow sensor (MAFS) ......... EC-152, 566
Master cylinder (clutch) ............................. CL-11
Meter .......................................................... EL-89
Mirror defogger ........................................ EL-138
Mirror, door ................................................ BT-72
Misfire ...................................................... EC-262
Mode door control linkage
adjustment ............................................. HA-47
Model variation ........................................... GI-38
Molding - See Exterior ............................... BT-47
Multi-remote control system .................... EL-220
Multiport fuel injection (MFI) system ......... EC-29
Multiport fuel injection precautions ............... GI-6
N
NATS (Nissan Anti-theft System)
precautions ................................................... GI-3
NATS (Nissan Anti-theft System) ............ EL-234
NATS - Wiring diagram ............................ EL-237
NVH troubleshooting (AX) ........................... AX-3
NVH troubleshooting (BR) .......................... BR-6
NVH troubleshooting (MT) ........................ MT-13
NVH troubleshooting (ST) ........................... ST-5
NVH troubleshooting (SU) ........................ SU-16
NVH troubleshooting CL ............................. CL-4
NVIS (Nissan vehicle immobiliser sys-
tem) precautions ....................................... GI-3
Neutral position switch .................... EC-364, 441
ALPHABETICAL INDEX
IDX-5