2001 NISSAN ALMERA service

Service NoticeNJBT0001+When removing or installing various parts, place a cloth or padding onto the vehicle body to prevent
scratches.
+Handle trim, molding, instruments, grille, etc. carefully during removing or installing. Be careful not to oil
or damage them.
+Apply sealing compound where necessary when installing parts.
+When applying sealing compound, be careful that the sealing compound does not protrude from parts.
+When replacing any metal parts (for example body outer panel, members, etc.), be sure to take rust pre-
vention measures.
Supplemental Restraint System (SRS) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº
NJBT0002The Supplemental Restraint System such as ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to NISSAN MODEL N16 is as follows (The compo-
sition varies according to the destination and optional equipment.):
+For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat
belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
+For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
seat), side air bag (satellite) sensor, diagnosis sensor unit (one of components of air bags for a frontal
collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).
Information necessary to service the system safely is included in theRS sectionof this Service Manual.
WARNING:
+To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance should be per-
formed by an authorized NISSAN dealer.
+Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the RS section.
+Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow harness connector.
PRECAUTIONS
Service Notice
BT-3

CLUTCH
SECTION
CL
CONTENTS
PRECAUTIONS...............................................................2
Precautions ..................................................................2
PREPARATION...............................................................3
Special Service Tools ..................................................3
Commercial Service Tools ...........................................3
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING.....................................................4
NVH Troubleshooting Chart.........................................4
CLUTCH...................................................................4
CLUTCH SYSTEM...........................................................5
Components - RHD Model with QG Engine - .............5
Components - LHD Model with QG Engine -..............6
Components - RHD Model with YD Engine -..............7
Components - LHD Model with YD Engine - ..............8
Inspection and Adjustment ..........................................9
CLUTCH PEDAL INSPECTION...................................9
CLUTCH PEDAL ADJUSTMENT...............................10
AIR BLEEDING PROCEDURE..................................10
CLUTCH MASTER CYLINDER..................................... 11
Components............................................................... 11
Removal .....................................................................12
Installation ..................................................................12
Disassembly...............................................................12
Inspection...................................................................12
Assembly ...................................................................13
OPERATING CYLINDER...............................................14
Components...............................................................14
Removal .....................................................................14
Disassembly...............................................................14
Inspection...................................................................14
Assembly ...................................................................15
Installation ..................................................................15
PIPING...........................................................................16
Removal .....................................................................16Installation ..................................................................16
RS5F30A, RS5F70A
CLUTCH RELEASE MECHANISM...............................17
Components...............................................................17
Removal .....................................................................17
Inspection...................................................................17
Installation ..................................................................17
RS5F50A
CLUTCH RELEASE MECHANISM...............................20
Components...............................................................20
Removal .....................................................................20
Inspection...................................................................20
Installation ..................................................................20
CLUTCH DISC, CLUTCH COVER AND
FLYWHEEL....................................................................22
Components...............................................................22
Inspection and Adjustment ........................................22
CLUTCH DISC.........................................................22
CLUTCH COVER.....................................................23
FLYWHEEL.............................................................23
Installation ..................................................................23
SERVICE DATA AND SPECIFICATIONS (SDS).........24
Clutch Control System ...............................................24
Clutch Master Cylinder ..............................................24
Clutch Operating Cylinder .........................................24
Clutch Disc.................................................................24
Clutch Cover ..............................................................24
Clutch Pedal ..............................................................24

Special Service ToolsNJCL0002
Tool number
Tool nameDescription
GG94310000
Flare nut torque wrench
NT406
Removing and installing clutch piping
a: 10 mm (0.39 in)
KV30101600 (New)
KV30101000 (Former)
Clutch aligning bar
NT645
Installing clutch cover and clutch disc
(F30A and F70A)
a: 15.9 mm (0.626 in) dia.
b: 17.9 mm (0.705 in) dia.
c: 40 mm (1.57 in)
ST20630000
Clutch aligning bar
NT405
Installing clutch cover and clutch disc
(F50A)
a: 15.8 mm (0.622 in) dia.
b: 22.9 mm (0.902 in) dia.
c: 45.0 mm (1.772 in)
ST20050240
Diaphragm spring adjust-
ing wrench
NT404
Adjusting unevenness of diaphragm spring of
clutch cover
a: 150 mm (5.91 in)
b: 25 mm (0.98 in)
KV32101000
Pin punch
NT410
Removing and installing spring pin
a: 4 mm (0.16 in) dia.
Commercial Service ToolsNJCL0003
Tool name Description
1 Flare nut crowfoot
2 Torque wrench
NT360
Removing and installing clutch piping
a: 10 mm (0.39 in)
PREPARATION
Special Service Tools
CL-3

Clutch Control SystemNJCL0034
Type of clutch controlHydraulic
Clutch Master CylinderNJCL0035Unit: mm (in)
Inner diameter15.87 (5/8)
Clutch Operating CylinderNJCL0036Unit: mm (in)
Inner diameter19.05 (3/4)
Clutch DiscNJCL0038Unit: mm (in)
Engine QG15DE QG18DE YD22DDT
Model 200215
240
Part number 30100-2F205 Part number 30100-2F215
Facing size (Outer dia.´
inner dia.´thickness)200´134´3.5 (7.87´
5.28´0.138)215´140´3.5 (8.46´
5.51´0.138)216´153´3.45 (8.50´
6.02´0.1358)240´160´3.5 (9.45´
6.30´0.138)
Thickness of disc assembly
with load7.4 - 8.0 (0.291 - 0.315)
with 3,780 N (385.6 kg,
849.7 lb)7.6 - 8.0 (0.299 - 0.315)
with 4,904 N (500 kg, 1,103
lb)7.3 - 7.9 (0.2874 - 0.310)
with 4,900 N (499.8 kg,
1,102 lb)7.85 - 8.35 (0.3091 -
0.3287) with 5,690 N (580.2
kg, 1,279 lb)
Wear limit of facing surface
to rivet head0.3 (0.012) 0.3 (0.012) Ð 0.3 (0.012)
Wearing thickness of facing Ð Ð 1.3 (0.051) Ð
Runout limit of facing 1.0 (0.039)
Distance of runout check
point (from the hub center)95 (3.74) 102.5 (4.04) 115 (4.53)
Maximum backlash of
spline (at outer edge disc)0.8 (0.031) 0.9 (0.035) 1.0 (0.039)
Clutch CoverNJCL0039Unit: mm (in)
Engine QG15DE QG18DE YD22DDT
Model 200 215 240
Full-load 3,481 N (355 kg, 783 lb) 4,413 N (450 kg, 992 lb) 5,690 N (580.2 kg, 1,279 lb)
Uneven limit of diaphragm spring
toe height0.8 (0.031) 0.7 (0.028)
Clutch PedalNJCL0040Unit: mm (in)
Applied modelSedan
Hatchback
QG15DE YD22DDT QG18DE
Pedal height ªSº138 - 148
(5.43 - 5.83)138 - 148
(5.43 - 5.83)134 - 144
(5.28 - 5.67)140 - 150
(5.51 - 5.91)
Pedal free play ªAº1 - 3 (0.039 - 0.118)
SERVICE DATA AND SPECIFICATIONS (SDS)
Clutch Control System
CL-24

ENGINE CONTROL SYSTEM
SECTION
EC
CONTENTS
QG
TROUBLE DIAGNOSIS - INDEX..................................10
Alphabetical & P No. Index for DTC .........................10
PRECAUTIONS.............................................................16
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER².............16
Precautions for On Board Diagnostic (OBD)
System of Engine and A/T.........................................16
Engine Fuel & Emission Control System ..................17
Wiring Diagrams and Trouble Diagnosis ...................19
PREPARATION.............................................................20
Special Service Tools ................................................20
Commercial Service Tools .........................................20
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM.........................................................................21
Engine Control Component Parts Location ...............21
Circuit Diagram ..........................................................25
System Diagram ........................................................29
Vacuum Hose Drawing ..............................................30
System Chart .............................................................31
ENGINE AND EMISSION BASIC CONTROL
SYSTEM DESCRIPTION...............................................32
Multiport Fuel Injection (MFI) System .......................32
Electronic Ignition (EI) System ..................................34
Air Conditioning Cut Control ......................................35
Fuel Cut Control (at no load & high engine
speed) ........................................................................36
Evaporative Emission System ...................................36
Positive Crankcase Ventilation ..................................39
BASIC SERVICE PROCEDURE...................................40
Fuel Pressure Release ..............................................40
Fuel Pressure Check .................................................40
Fuel Pressure Regulator Check ................................41
Injector .......................................................................41
How to Check Idle Speed and Ignition Timing ..........43
Preparation ................................................................44
Inspection Procedure .................................................47
Idle Air Volume Learning ...........................................57ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION...............................................................59
Introduction ................................................................59
Two Trip Detection Logic ...........................................59
Emission-related Diagnostic Information ...................60
NATS (Nissan Anti-theft System) ..............................74
Malfunction Indicator (MI) ..........................................74
OBD System Operation Chart (With Euro-OBD
Models Only)..............................................................78
CONSULT-II ...............................................................83
Generic Scan Tool (GST) ..........................................94
TROUBLE DIAGNOSIS - INTRODUCTION..................96
Introduction ................................................................96
Work Flow ..................................................................98
TROUBLE DIAGNOSIS - BASIC INSPECTION.........100
Basic Inspection/Sedan ...........................................100
Basic Inspection/Hatchback.....................................128
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION.............................................................153
DTC Inspection Priority Chart..................................153
Fail-safe Chart .........................................................154
Symptom Matrix Chart .............................................155
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................159
Major Sensor Reference Graph in Data Monitor
Mode ........................................................................161
ECM Terminals and Reference Value .....................164
TROUBLE DIAGNOSIS - SPECIFICATION VALUE..173
Description ...............................................................173
Testing Condition .....................................................173
Inspection Procedure ...............................................173
Diagnostic Procedure ..............................................174
TROUBLE DIAGNOSIS FOR INTERMITTENT
INCIDENT.....................................................................177
Description ...............................................................177
Diagnostic Procedure ..............................................177
TROUBLE DIAGNOSIS FOR POWER SUPPLY........178
Main Power Supply and Ground Circuit ..................178

ECM Terminals and Reference Value .....................578
Wiring Diagram ........................................................579
Diagnostic Procedure - Load Signal - .....................583
Diagnostic Procedure - Heater Control Panel
(Fan Switch) - ..........................................................589
Component Inspection .............................................590
MI & DATA LINK CONNECTORS..............................591
Wiring Diagram ........................................................591
SERVICE DATA AND SPECIFICATIONS (SDS).......593
Fuel Pressure Regulator..........................................593
Idle Speed and Ignition Timing ................................593
Mass Air Flow Sensor..............................................593
Intake Air Temperature Sensor ................................593
Engine Coolant Temperature Sensor ......................593
Throttle Position Sensor ..........................................593
Heated Oxygen Sensor 1 Heater (Front) ................593
Heated Oxygen Sensor 2 Heater (Rear).................593
Fuel Tank Temperature Sensor (Where Fitted) .......594
EGR Volume Control Valve (Where Fitted) .............594
EGR Temperature Sensor (Where Fitted) ...............594
EVAP Canister Purge Volume Control Valve ..........594
IACV-AAC Valve ......................................................594
Injector .....................................................................594
Ignition Coil with Power Transistor ..........................594
Condenser ...............................................................594
Fuel Pump ...............................................................594
Crankshaft Position Sensor (POS) ..........................595
Camshaft Position Sensor (PHASE) .......................595
YD
TROUBLE DIAGNOSIS - INDEX................................596
Alphabetical & P No. Index for DTC .......................596
PRECAUTIONS...........................................................598
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER²...........598
Engine Fuel & Emission Control System ................599
Precautions ..............................................................600
Wiring Diagrams and Trouble Diagnosis .................601
PREPARATION...........................................................602
Special Service Tools ..............................................602
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM.......................................................................603
Engine Control Component Parts Location .............603
Circuit Diagram ........................................................606
System Diagram ......................................................608
System Chart ...........................................................609
ENGINE AND EMISSION BASIC CONTROL
SYSTEM DESCRIPTION.............................................610
Fuel Injection Control System .................................610
Fuel Injection Timing Control System...................... 611
Air Conditioning Cut Control ....................................612Fuel Cut Control (at no load & high engine
speed) ......................................................................612
Crankcase Ventilation System .................................613
BASIC SERVICE PROCEDURE.................................614
Injection Tube and Injection Nozzle ........................614
Electronic Control Fuel Injection Pump ...................618
Fuel Filter .................................................................625
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION.............................................................627
DTC and MI Detection Logic ...................................627
Diagnostic Trouble Code (DTC) ..............................627
Malfunction Indicator (MI) ........................................628
CONSULT-II .............................................................632
TROUBLE DIAGNOSIS - INTRODUCTION................637
Introduction ..............................................................637
Work Flow ................................................................639
TROUBLE DIAGNOSIS - BASIC INSPECTION.........641
Basic Inspection.......................................................641
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION.............................................................646
Symptom Matrix Chart .............................................646
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................656
Major Sensor Reference Graph in Data Monitor
Mode ........................................................................658
ECM Terminals and Reference Value .....................659
TROUBLE DIAGNOSIS FOR INTERMITTENT
INCIDENT.....................................................................665
Description ...............................................................665
Diagnostic Procedure ..............................................665
TROUBLE DIAGNOSIS FOR POWER SUPPLY........666
Main Power Supply and Ground Circuit ..................666
DTC P0100 MASS AIR FLOW SEN...........................673
Component Description ...........................................673
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................673
ECM Terminals and Reference Value .....................673
On Board Diagnosis Logic.......................................673
DTC Confirmation Procedure ..................................673
Wiring Diagram ........................................................675
Diagnostic Procedure ..............................................677
DTC P0115 COOLANT TEMP SEN............................680
Description ...............................................................680
On Board Diagnosis Logic.......................................680
DTC Confirmation Procedure ..................................680
Wiring Diagram ........................................................682
Diagnostic Procedure ..............................................683
DTC P0120 ACCEL POS SENSOR............................685
Description ...............................................................685
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................685
ECM Terminals and Reference Value .....................685
CONTENTS(Cont'd)
EC-7

Diagnostic Procedure ..............................................790
DTC P1603 ECM 12, DTC P1607 ECM 2...................792
Description ...............................................................792
On Board Diagnosis Logic.......................................792
DTC Confirmation Procedure ..................................792
Diagnostic Procedure ..............................................793
DTC P1620 ECM RLY.................................................794
ECM Terminals and Reference Value .....................794
On Board Diagnosis Logic.......................................794
DTC Confirmation Procedure ..................................794
Wiring Diagram ........................................................795
Diagnostic Procedure ..............................................797
DTC P1621 ECM 15....................................................799
Description ...............................................................799
On Board Diagnosis Logic.......................................799
DTC Confirmation Procedure ..................................799
Diagnostic Procedure ..............................................800
DTC P1660 BATTERY VOLTAGE..............................801
On Board Diagnosis Logic.......................................801
DTC Confirmation Procedure ..................................801
Diagnostic Procedure ..............................................801
DTC P1690 P5.PUMP C/MODULE.............................803
Description ...............................................................803
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................803
ECM Terminals and Reference Value .....................804
On Board Diagnosis Logic.......................................804
DTC Confirmation Procedure ..................................804
Diagnostic Procedure ..............................................805
GLOW CONTROL SYSTEM.......................................806
Description ...............................................................806
ECM Terminals and Reference Value .....................807Wiring Diagram ........................................................808
Diagnostic Procedure ..............................................809
EGR VOLUME CONTROL SYSTEM..........................815
Description ...............................................................815
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................816
ECM Terminals and Reference Value .....................816
Wiring Diagram ........................................................817
Diagnostic Procedure ..............................................819
START SIGNAL...........................................................823
Wiring Diagram ........................................................823
Diagnostic Procedure ..............................................824
PARK/NEUTRAL POSITION (PNP) SWITCH
(WHERE FITTED)........................................................826
Description ...............................................................826
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................826
ECM Terminals and Reference Value .....................826
Wiring Diagram ........................................................827
Diagnostic Procedure ..............................................828
AIR CONDITIONER CONTROL..................................830
Wiring Diagram ........................................................830
MI & DATA LINK CONNECTORS..............................831
Wiring Diagram ........................................................831
SERVICE DATA AND SPECIFICATIONS (SDS).......834
General Specifications .............................................834
Injection Nozzle .......................................................834
Engine Coolant Temperature Sensor ......................834
Crankshaft Position Sensor (TDC) ..........................834
Glow Plug ................................................................834
Accelerator Position Sensor ....................................834
EGR Volume Control Valve .....................................834
CONTENTS(Cont'd)
EC-9

Supplemental Restraint System (SRS) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº
NJEC0002The Supplemental Restraint System such as ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to NISSAN MODEL N16 is as follows (The compo-
sition varies according to the destination and optional equipment.):
+For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat
belt pre-tensioners, a diagnoses sensor unit, warning lamp, wiring harness and spiral cable.
+For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
seat), side air bag (satellite) sensor, diagnoses sensor unit (one of components of air bags for a frontal
collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).
Information necessary to service the system safely is included in theRS sectionof this Service Manual.
WARNING:
+To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance should be per-
formed by an authorized NISSAN dealer.
+Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the RS section.
+Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harness can be identified by yellow harness connector.
Precautions for On Board Diagnostic (OBD)
System of Engine and A/T
NJEC0003The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) to warn the driver
of a malfunction causing emission deterioration.
CAUTION:
+Be sure to turn the ignition switch ªOFFº and disconnect the negative battery terminal before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc.
will cause the MI to light up.
+Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
+Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector.
For description and how to disconnect, refer to EL section, ªDescriptionº, ªHARNESS CONNEC-
TORº.
+Be sure to route and secure the harnesses properly after work. The interference of the harness with
a bracket, etc. may cause the MI to light up due to the short circuit.
+Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MI to light up due to the malfunction of fuel injection system, etc.
+Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission Control Module) before returning the vehicle to the customer.
PRECAUTIONSQG
Supplemental Restraint System (SRS) ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº
EC-16