2001 NISSAN ALMERA check engine

5 RECHECK BRAKE FLUID LEVEL
Check brake fluid level in reservoir tank again.
SBR451D
Is brake fluid filled between MAX and MIN lines on reservoir tank and/or has brake fluid been contaminated?
Ye s©GO TO 6.
No©Fill up brake fluid.
6 CHECK WARNING LAMP ACTIVATION
Check warning lamp activation.
SBR759E
Does warning lamp turn on when ignition switch is turned ªONº?
Ye s©GO TO 7.
No©Check fuse, warning lamp bulb and warning lamp circuit.
7 CHECK WARNING LAMP DEACTIVATION
Check warning lamp for deactivation after engine is started.
Does warning lamp turn off when engine is started?
Ye s©GO TO 8.
No©Go to Self-diagnosis. Refer to BR-63, 65.
8 DRIVE VEHICLE
Drive vehicle at speeds over 30 km/h (19 MPH) for at least one minute.
Does warning lamp remain off after vehicle has been driven at 30 km/h (19 MPH) for at least one minute?
Ye s©END
No©Go to Self-diagnosis. Refer to BR-63, 65.
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONABS
Preliminary Check (Cont'd)
BR-74

2 CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit connector. Check terminals for damage or loose connections. Then recon-
nect connector.
2. Carry out self-diagnosis again.
Does warning lamp activate again?
Ye s©GO TO 3.
No©INSPECTION END
3 CHECK ABS ACTUATOR AND ELECTRIC UNIT POWER SUPPLY CIRCUIT
1. Disconnect ABS actuator and electric unit connector.
2. Check voltage between ABS actuator and electric unit connector terminal 15 and ground.
SBR058EH
Does battery voltage exist when ignition switch is turned ON?
Ye s©GO TO 4.
No©GO TO 5.
4 CHECK ABS ACTUATOR AND ELECTRIC UNIT GROUND
Refer to ABS ACTUATOR AND ELECTRIC UNIT GROUND in Ground Circuit Check, BR-75.
Is ground circuit OK?
OK©Check ABS actuator and electric unit pin terminals for damage or the connection of ABS
actuator and electric unit harness connector. Reconnect ABS actuator and electric unit
harness connector. Then retest.
NG©Check the following.
+Harness connector E1
+Harness for open or short between ABS actuator and electric unit and ground
If NG, repair harness or connectors.
5 CHECK FUSE
Check 10A fuse 31 (Engine control) for control unit. Refer to POWER SUPPLY ROUTING in EL section.
Is fuse OK?
Ye s©GO TO 6.
No©Replace fuse.
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMSABS
Low Voltage (Cont'd)
BR-87

5. Pedal Vibration and Noise=NJBR0108
1 INSPECTION START
Pedal vibration and noise inspection
SAT797A
©GO TO 2.
2 CHECK SYMPTOM
1. Apply brake.
2. Start engine.
Does the symptom appear only when engine is started?
Ye s©Carry out self-diagnosis. Refer to BR-63, BR-65.
No©GO TO 3.
3 RECHECK SYMPTOM
Does the symptom appear when electrical equipment switches (such as headlamp) are operated?
Ye s©GO TO 4.
No©Go to ª3. CHECK WARNING LAMP INDICATIONº in ª2. Unexpected Pedal Actionº,
BR-89.
4 CHECK WHEEL SENSOR
Check wheel sensor shield ground. For location of shield ground, refer to wiring diagram and ªHARNESS LAYOUTº in EL
section.
Is wheel sensor shield grounded properly?
Ye s©Check ABS actuator and electric unit pin terminals for damage or the connection of ABS
actuator and electric unit harness connector. Reconnect ABS actuator and electric unit
harness connector. Then retest.
No©Repair.
NOTE:
ABS may operate and cause vibration under any of the following
conditions.
+Applying brake gradually when shifting or operating clutch.
+Low friction (slippery) road.
+High speed cornering.
+Driving over bumps and pot holes.
+Engine speed is over 5,000 rpm with vehicle stopped.
TROUBLE DIAGNOSES FOR SYMPTOMSABS
5. Pedal Vibration and Noise
BR-92

Checking Body CorrosionNJBT0033Visually check the body sheet metal panel for corrosion, paint damage (scratches, chipping, rubbing, etc.) or
damage to the anti-corrosion materials. In particular, check the following locations.
Hemmed portion
Hood front end, door lower end, trunk lid rear end, etc.
Panel joint
Side sill of rear fender and center pillar, rear wheel housing of rear fender, around strut tower in engine
compartment, etc.
Panel edge
Trunk lid opening, sunroof opening, fender wheelarch flange, fuel filler lid flange, around holes in panel, etc.
Parts contact
Waist molding, windshield molding, bumper, etc.
Protectors
Damage or condition of mudguard, fender protector, chipping protector, etc.
Anti-corrosion materials
Damage or separation of anti-corrosion materials under the body.
Drain holes
Condition of drain holes at door and side sill.
When repairing corroded areas, refer to the Corrosion Repair Manual.
CHASSIS AND BODY MAINTENANCE (FOR EUROPE)
Checking Body Corrosion
BT-6

SCL466-C
CLUTCH COVERNJCL0032S02+Check clutch cover installed on vehicle for unevenness of dia-
phragm spring toe height.
Uneven limit:
MODEL 200, 215 0.8 mm (0.031 in)
MODEL 240 0.7 mm (0.028 in)
+If out of limit, adjust the height with Tool.
AEM100
FLYWHEELNJCL0032S03+Check contact surface of flywheel for slight burns or discolora-
tion. Repair flywheel with emery paper.
+Check flywheel runout.
Maximum allowable runout:
Refer to EM-62, ªFlywheel/Drive Plate Runoutº (QG
engine models), and EM-154, ªFlywheel Runout (YD
engine models)º.
SCL616-B
SCL600-F
InstallationNJCL0033+Insert Tool into clutch disc hub when installing clutch cover and
disc.
+Be careful not to allow grease to contaminate clutch fac-
ing.
+Tighten bolts in numerical order.
First step:
: 10 - 20 N´m (1 - 2 kg-m,7-14ft-lb)
Final step:
QG engine models (200, 215)
: 22 - 29 N´m (2.2 - 3.0 kg-m, 15 - 21 ft-lb)
YD22DDT engine model (240)
: 35 - 44 N´m (3.5 - 4.5 kg-m, 26 - 32 ft-lb)
CLUTCH DISC, CLUTCH COVER AND FLYWHEEL
Inspection and Adjustment (Cont'd)
CL-23

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

DTC P0100 MASS AIR FLOW SENSOR (MAFS)......187
Component Description ...........................................187
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................187
ECM Terminals and Reference Value .....................187
On Board Diagnosis Logic.......................................187
Fail-safe Mode .........................................................188
DTC Confirmation Procedure ..................................188
Wiring Diagram ........................................................189
Diagnostic Procedure ..............................................191
Component Inspection .............................................193
DTC P0110 INTAKE AIR TEMPERATURE
SENSOR......................................................................194
Component Description ...........................................194
On Board Diagnosis Logic.......................................195
DTC Confirmation Procedure ..................................195
Wiring Diagram ........................................................196
Diagnostic Procedure ..............................................198
Component Inspection .............................................200
DTC P0115 ENGINE COOLANT TEMPERATURE
SENSOR......................................................................201
Component Description ...........................................201
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................201
On Board Diagnosis Logic.......................................201
Fail-safe Mode .........................................................202
DTC Confirmation Procedure ..................................202
Wiring Diagram ........................................................203
Diagnostic Procedure ..............................................205
Component Inspection .............................................206
DTC P0120 THROTTLE POSITION SENSOR...........207
Component Description ...........................................207
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................207
ECM Terminals and Reference Value .....................208
On Board Diagnosis Logic.......................................208
Fail-safe Mode .........................................................208
DTC Confirmation Procedure ..................................208
Wiring Diagram ........................................................210
Diagnostic Procedure ..............................................212
Component Inspection .............................................214
DTC P0130 HEATED OXYGEN SENSOR 1
(FRONT) (CIRCUIT).....................................................216
Component Description ...........................................216
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................216
ECM Terminals and Reference Value .....................216
On Board Diagnosis Logic.......................................217
DTC Confirmation Procedure ..................................217
Overall Function Check ...........................................218
Wiring Diagram ........................................................219
Diagnostic Procedure ..............................................221Component Inspection .............................................222
DTC P0131 HEATED OXYGEN SENSOR 1
(FRONT) (LEAN SHIFT MONITORING).....................224
Component Description ...........................................224
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................224
ECM Terminals and Reference Value .....................224
On Board Diagnosis Logic.......................................225
DTC Confirmation Procedure ..................................225
Overall Function Check ...........................................226
Diagnostic Procedure ..............................................226
Component Inspection .............................................228
DTC P0132 HEATED OXYGEN SENSOR 1
(FRONT) (RICH SHIFT MONITORING)......................230
Component Description ...........................................230
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................230
ECM Terminals and Reference Value .....................230
On Board Diagnosis Logic.......................................231
DTC Confirmation Procedure ..................................231
Overall Function Check ...........................................232
Diagnostic Procedure ..............................................232
Component Inspection .............................................234
DTC P0133 HEATED OXYGEN SENSOR 1
(FRONT).......................................................................236
Component Description ...........................................236
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................236
ECM Terminals and Reference Value .....................236
On Board Diagnosis Logic.......................................237
DTC Confirmation Procedure ..................................237
Overall Function Check ...........................................238
Wiring Diagram ........................................................239
Diagnostic Procedure ..............................................241
Component Inspection .............................................243
DTC P0134 HEATED OXYGEN SENSOR 1
(FRONT) (HIGH VOLTAGE)........................................245
Component Description ...........................................245
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................245
ECM Terminals and Reference Value .....................245
On Board Diagnosis Logic.......................................246
DTC Confirmation Procedure ..................................246
Wiring Diagram ........................................................247
Diagnostic Procedure ..............................................249
Component Inspection .............................................250
DTC P0135 HEATED OXYGEN SENSOR 1
(FRONT) HEATER.......................................................252
Description ...............................................................252
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................252
ECM Terminals and Reference Value .....................252
CONTENTS(Cont'd)
EC-2