2001 NISSAN ALMERA N16 AUX

NEW TERMNEW ACRONYM /
ABBREVIATIONOLD TERM
Erasable programmable read only
memoryEPROM ***
Evaporative emission canister EVAP canister Canister
Evaporative emission system EVAP system Evaporative emission control system
Exhaust gas recirculation valve EGR valve EGR valve
Exhaust gas recirculation control-BPT
valveEGRC-BPT valve BPT valve
Exhaust gas recirculation control-solenoid
valveEGRC-solenoid valve EGR control solenoid valve
Exhaust gas recirculation temperature
sensorEGRT sensor Exhaust gas temperature sensor
EGR temperature sensor
Flash electrically erasable programmable
read only memoryFEEPROM ***
Flash erasable programmable read only
memoryFEPROM ***
Flexible fuel sensor FFS ***
Flexible fuel system FF system ***
Fuel level sensor *** ***
Fuel pressure regulator *** Pressure regulator
Fuel pressure regulator control solenoid
valve*** PRVR control solenoid valve
Fuel tank temperature sensor FTT sensor Tank fuel temperature sensor
Fuel trim FT ***
Heated oxygen sensor HO2S Exhaust gas sensor
Idle air control system IAC system Idle speed control
Idle air control valve-air regulator IACV-air regulator Air regulator
Idle air control valve-auxiliary air control
valveIACV-AAC valve Auxiliary air control (AAC) valve
Idle air control valve-FICD solenoid valve IACV-FICD solenoid valve FICD solenoid valve
Idle air control valve-idle up control sole-
noid valveIACV-idle up control solenoid valve Idle up control solenoid valve
Idle speed control-FI pot ISC-FI pot FI pot
Idle speed control system ISC system ***
Ignition control IC ***
Ignition control module ICM ***
Indirect fuel injection system IFI system ***
Intake air IA Air
Intake air temperature sensor IAT sensor Air temperature sensor
Knock *** Detonation
Knock sensor KS Detonation sensor
ISO 15031-2 TERMINOLOGY LIST
ISO 15031-2 (Cont'd)
GI-51

crankshaft position sensor (TDC sensor) from the assem-
bly.
+Always pay extra attention not to damage edge of crank-
shaft position sensor (TDC sensor) or ring gear teeth.
REMOVALNJEM0069S011. Remove engine undercover, and hood for hoisting.
2. Drain coolant from both cylinder block and radiator. Refer to
LC-43, ªChanging Engine Coolantº.
3. Remove the following parts:
+Battery
+RH and LH front wheels
+RH and LH splash covers (combined with undercover)
+Auxiliary belts
+Alternator
+Alternator brackets
+Radiator and cooling fan
+Engine cover
+Air ducts and air cleaner case
LH side of engine room:
4. Disconnect all harnesses and grounds that are connected to
components on vehicle.
5. Disconnect vacuum hose on vacuum pump side.
6. Disconnect fuel feed and fuel return hoses on engine side.
+Immediately put blind plugs into the openings to prevent
fuel from flowing out.
7. Disconnect heater hose. Plug opening of hose to prevent cool-
ant from flowing out.
RH side of engine room:
8. Remove air conditioner compressor from brackets and move
it toward vehicle side. Secure compressor on vehicle side with
rope.
Vehicle underside:
9. Remove exhaust front tube.
10. Disconnect two hoses from power steering pump and plug to
stop fluid.
11. Remove M/T control rod and support rod.
12. Remove ABS wheel sensor, and temporarily hang brake cali-
per with rope on vehicle side.
13. Remove RH and LH drive shafts.
YEM024
14. Install engine slingers to cylinder head.
: 30 - 37 N´m (3.0 - 3.8 kg-m, 22 - 27 ft-lb)
+Use engine slingers and securing bolts of the specified
service parts.
15. Lift up vehicle to appropriate level where work can be per-
formed efficiently. Using two transmission jacks, securely sup-
port engine oil pan and bottom surface of transaxle.
ENGINE ASSEMBLYYD
Removal and Installation (Cont'd)
EM-137

JEM193G
d. Hoist up engine and install it on the engine stand (SST).
+Another method is to set engine sub-attachment and engine
attachment on engine stand beforehand, and then, install
engine.
3. Drain engine oil and coolant from engine.
4. Remove the following and the associated parts:
+Exhaust manifold
+Turbocharger assembly (For Europe)
+Injection tube
+Intake manifold
+Oil pan (upper and lower)
+Secondary timing chain
+Fuel injection pump
+Primary timing chain
+Rocker cover
+High pressure injection nozzle assembly
+Camshaft
+Cylinder head
+Thermostat, water pipes
+Oil cooler
+Auxiliary component brackets
5. Remove fuel injection pump bracket.
SEM500G
6. If the replacement of pilot bushing is necessary, remove it with
pilot bushing puller (SST).
7. Remove rear oil seal retainer.
+Insert a flat-bladed screwdriver between main bearing cap and
rear oil seal retainer to remove retainer.
8. Remove rear oil seal from rear oil seal retainer.
+Punch out with a flat-bladed screwdriver.
+Be careful not to damage rear oil seal retainer.
JEM195G
9. Remove piston and connecting rod assembly.
a. Set crankshaft pin of the removal location at a position close
to BDC.
b. Remove connecting rod cap.
c. Push piston and connecting rod assembly toward cylinder
head using a hammer handle.
+Before removing piston and connecting rod assembly, check
connecting rod side clearance. Refer to EM-143, ªCONNECT-
ING ROD SIDE CLEARANCEº.
10. Remove connecting rod bearings from connecting rod and
connecting rod cap.
CYLINDER BLOCKYD
Disassembly (Cont'd)
EM-141

JEM233G
16. Install rear oil seal retainer.
+Apply a continuous bead of specified liquid gasket (Refer to
EM-76, ªLiquid Gasket Application Procedureº.) on locations
shown in the figure.
JEM234G
17. Install pilot bushing.
+Force fit with the drift [approx. 19 mm (0.75 in) dia.].
SEM513G
18. Install fuel injection pump bracket.
+Install insulator according to the shape of the block, and secure
by placing the bracket against the insulator. (Not installed on
some models)
+Align the bracket with the dowel pins on the block to install.
+The two bolts used for dowel pins have a longer shanks than
the other two.
+Check the protruding distance of the dowel pin for fuel injec-
tion pump.
Standard: 13.0 - 15.0 mm (0.512 - 0.591 in)
19. Install parts to the engine in the reverse order of disassembly.
+Tighten bolts securing brackets of auxiliary components (A/C
compressor, alternator) to the specified torque.
: 57 - 65 N´m (5.8 - 6.7 kg-m, 42 - 48 ft-lb)
20. Remove engine from engine stand in the reverse order of
assembly.
21. Install flywheel.
+Holding ring gear with ring stopper (SST), tighten securing
bolts with TORX-socket (size: Q8 E20, Commercial Service
Tool).
+Tighten bolts uniformly in a crisscross manner.
SEM500GA
REPLACEMENT OF PILOT BUSHINGNJEM0074S031. Remove pilot bushing using tool or suitable tool.
CYLINDER BLOCKYD
Assembly (Cont'd)
EM-157

Diagnostic Procedure ..............................................281
Component Inspection .............................................284
DTC P0400 EGR FUNCTION (CLOSED) (WHERE
FITTED)........................................................................285
Description ...............................................................285
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................286
ECM Terminals and Reference Value .....................286
On Board Diagnosis Logic.......................................286
DTC Confirmation Procedure ..................................287
Wiring Diagram ........................................................289
Diagnostic Procedure ..............................................290
Component Inspection .............................................292
DTC P0403 EGR VOLUME CONTROL VALVE
(CIRCUIT).....................................................................293
Description ...............................................................293
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................294
ECM Terminals and Reference Value .....................294
On Board Diagnosis Logic.......................................294
DTC Confirmation Procedure ..................................294
Wiring Diagram ........................................................296
Diagnostic Procedure ..............................................297
Component Inspection .............................................298
DTC P0420 THREE WAY CATALYST FUNCTION...299
On Board Diagnosis Logic.......................................299
DTC Confirmation Procedure ..................................299
Overall Function Check ...........................................300
Diagnostic Procedure ..............................................300
DTC P0443 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE (CIRCUIT).................304
Description ...............................................................304
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................304
ECM Terminals and Reference Value .....................305
On Board Diagnosis Logic.......................................305
DTC Confirmation Procedure ..................................305
Wiring Diagram ........................................................306
Diagnostic Procedure ..............................................307
Component Inspection .............................................308
DTC P0500 VEHICLE SPEED SENSOR (VSS).........309
Component Description ...........................................309
ECM Terminals and Reference Value .....................309
On Board Diagnosis Logic.......................................309
DTC Confirmation Procedure ..................................309
Wiring Diagram ........................................................ 311
Diagnostic Procedure ..............................................312
DTC P0505 IDLE AIR CONTROL VALVE (IACV) -
AUXILIARY AIR CONTROL (AAC) VALVE...............313
Description ...............................................................313
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................314ECM Terminals and Reference Value .....................314
On Board Diagnosis Logic.......................................314
DTC Confirmation Procedure ..................................314
Wiring Diagram ........................................................315
Diagnostic Procedure ..............................................316
Component Inspection .............................................320
DTC P0510 CLOSED THROTTLE POSITION
SWITCH (WHERE FITTED).........................................321
Component Description ...........................................321
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................321
ECM Terminals and Reference Value .....................321
On Board Diagnosis Logic.......................................321
DTC Confirmation Procedure ..................................321
Overall Function Check ...........................................322
Wiring Diagram ........................................................323
Diagnostic Procedure ..............................................324
Component Inspection .............................................325
DTC P0605 ECM.........................................................327
Component Description ...........................................327
On Board Diagnosis Logic.......................................327
DTC Confirmation Procedure ..................................327
Diagnostic Procedure ..............................................328
D T C P 1111INTAKE VALVE TIMING CONTROL
SOLENOID VALVE......................................................329
Component Description ...........................................329
Operation .................................................................329
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................329
ECM Terminals and Reference Value .....................329
On Board Diagnosis Logic.......................................329
DTC Confirmation Procedure ..................................330
Wiring Diagram ........................................................331
Diagnostic Procedure ..............................................332
Component Inspection .............................................333
DTC P1217 OVERHEAT (COOLING SYSTEM).........334
System Description ..................................................334
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................334
ECM Terminals and Reference Value .....................335
On Board Diagnosis Logic.......................................335
Overall Function Check ...........................................336
Wiring Diagram ........................................................337
Diagnostic Procedure ..............................................339
Main 12 Causes of Overheating..............................345
Component Inspection .............................................345
DTC P1401 EGR TEMPERATURE SENSOR
(WHERE FITTED)........................................................347
Component Description ...........................................347
On Board Diagnosis Logic.......................................347
DTC Confirmation Procedure ..................................347
Wiring Diagram ........................................................350
CONTENTS(Cont'd)
EC-4

Diagnostic Procedure ..............................................351
Component Inspection .............................................352
DTC P1402 EGR FUNCTION (OPEN) (WHERE
FITTED)........................................................................353
Description ...............................................................353
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................354
ECM Terminals and Reference Value .....................354
On Board Diagnosis Logic.......................................354
DTC Confirmation Procedure ..................................355
Wiring Diagram ........................................................357
Diagnostic Procedure ..............................................358
Component Inspection .............................................359
DTC P1605 A/T DIAGNOSIS COMMUNICATION
LINE.............................................................................361
System Description ..................................................361
ECM Terminals and Reference Value .....................361
On Board Diagnosis Logic.......................................361
DTC Confirmation Procedure ..................................361
Wiring Diagram ........................................................362
Diagnostic Procedure ..............................................363
DTC P1706 PARK/NEUTRAL POSITION (PNP)
SWITCH.......................................................................364
Component Description ...........................................364
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................364
ECM Terminals and Reference Value .....................364
On Board Diagnosis Logic.......................................364
DTC Confirmation Procedure ..................................364
Overall Function Check ...........................................365
Wiring Diagram ........................................................366
Diagnostic Procedure ..............................................367
INTAKE AIR TEMPERATURE SENSOR....................369
Component Description ...........................................369
Wiring Diagram ........................................................370
Diagnostic Procedure ..............................................371
Component Inspection .............................................372
HEATED OXYGEN SENSOR 1 (FRONT)...................373
Component Description ...........................................373
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................373
ECM Terminals and Reference Value .....................373
Wiring Diagram ........................................................374
Diagnostic Procedure ..............................................375
Component Inspection .............................................377
HEATED OXYGEN SENSOR 1 HEATER (FRONT)...379
Description ...............................................................379
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................379
ECM Terminals and Reference Value .....................379
Wiring Diagram ........................................................380
Diagnostic Procedure ..............................................381Component Inspection .............................................382
HEATED OXYGEN SENSOR 2 (REAR).....................383
Component Description ...........................................383
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................383
ECM Terminals and Reference Value .....................383
Wiring Diagram ........................................................384
Diagnostic Procedure ..............................................385
Component Inspection .............................................387
HEATED OXYGEN SENSOR 2 HEATER (REAR).....389
Description ...............................................................389
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................389
ECM Terminals and Reference Value .....................389
Wiring Diagram ........................................................390
Diagnostic Procedure ..............................................391
Component Inspection .............................................393
CRANKSHAFT POSITION SENSOR (POS)...............394
Component Description ...........................................394
ECM Terminals and Reference Value .....................394
Wiring Diagram ........................................................395
Diagnostic Procedure ..............................................396
Component Inspection .............................................399
EGR VOLUME CONTROL SYSTEM (WHERE
FITTED)........................................................................400
Description ...............................................................400
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................401
ECM Terminals and Reference Value .....................402
Wiring Diagram ........................................................403
Diagnostic Procedure ..............................................404
Component Inspection .............................................409
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE...................................................... 411
Description ............................................................... 411
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................ 411
ECM Terminals and Reference Value .....................412
Wiring Diagram ........................................................413
Diagnostic Procedure ..............................................414
Component Inspection .............................................417
IDLE AIR CONTROL VALVE (IACV) - AUXILIARY
AIR CONTROL............................................................418
Description ...............................................................418
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................419
ECM Terminals and Reference Value .....................419
Wiring Diagram ........................................................420
Diagnostic Procedure ..............................................421
Component Inspection .............................................425
CONTENTS(Cont'd)
EC-5

DescriptionNJEC0279SYSTEM DESCRIPTIONNJEC0279S01
Sensor Input Signal to ECMECM func-
tionActuator
Crankshaft position sensor (POS) Engine speed
Idle air
controlIACV-AAC valve Camshaft position sensor (PHASE) Engine speed and cylinder number
Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Throttle position sensor Throttle position
PNP switch Park/Neutral position
Air conditioner switch Air conditioner operation
Power steering oil pressure switch Power steering load signal
Battery Battery voltage
Vehicle speed sensor Vehicle speed
Cooling fan Cooling fan operation
Electrical load Electrical load signal
This system automatically controls engine idle speed to a specified
level. Idle speed is controlled through fine adjustment of the
amount of air which by-passes the throttle valve via IACV-AAC
valve. The IACV-AAC valve changes the opening of the air by-pass
passage to control the amount of auxiliary air. This valve is actu-
ated by a step motor built into the valve, which moves the valve in
the axial direction in steps corresponding to the ECM output sig-
nals. One step of IACV-AAC valve movement causes the respec-
tive opening of the air by-pass passage. (i.e. when the step
advances, the opening is enlarged.) The opening of the valve is
varied to allow for optimum control of the engine idling speed. The
crankshaft position sensor (POS) detects the actual engine speed
and sends a signal to the ECM. The ECM then controls the step
position of the IACV-AAC valve so that engine speed coincides with
the target value memorized in ECM. The target engine speed is the
lowest speed at which the engine can operate steadily. The opti-
mum value stored in the ECM is determined by taking into consid-
eration various engine conditions, such as during warm up,
deceleration, and engine load (air conditioner, power steering, cool-
ing fan operation and electrical load).
SEF937W
COMPONENT DESCRIPTIONNJEC0279S02IACV-AAC ValveNJEC0279S0202The IACV-AAC valve is operated by a step motor for centralized
control of auxiliary air supply. This motor has four winding phases
and is actuated by the output signals of ECM which turns ON and
OFF two windings each in sequence. Each time the IACV-AAC
valve opens or closes to change the auxiliary air quantity, the ECM
sends a pulse signal to the step motor. When no change in the
auxiliary air quantity is needed, the ECM does not issue the pulse
signal. A certain voltage signal is issued so that the valve remains
at that particular opening.
DTC P0505 IDLE AIR CONTROL VALVE (IACV) Ð AUXILIARY AIR CONTROL
(AAC) VALVE
QG
Description
EC-313

CONSULT-II Reference Value in Data Monitor
Mode
NJEC0280
MONITOR ITEM CONDITION SPECIFICATION
IACV-AAC/V+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle 5 - 25 steps
2,000 rpm Ð
ECM Terminals and Reference ValueNJEC0281Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
6
7
15
16BR
LG
P
ORIACV-AAC valve[Engine is running]
+Warm-up condition
+Idle speed0.1 - 14V
On Board Diagnosis LogicNJEC0282
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P0505
0505+An improper voltage signal is sent to ECM through the
valve.+Harness or connectors
(The IACV-AAC valve circuit is open.)
+IACV-AAC valve
SEF058Y
DTC Confirmation ProcedureNJEC0283NOTE:
+If ªDTC Confirmation Procedureº has been previously
conducted, always turn ignition switch ªOFFº and wait at least
9 seconds before conducting the next test.
+If the target idle speed is out of the specified value, per-
form ªIdle Air Volume Learningº, refer to EC-55, before
conducting ªDTC Confirmation Procedureº. For the target
idle speed, refer to ªSERVICE DATA AND SPECIFICA-
TIONS (SDS)º, EC-489.
With CONSULT-II
1) Turn ignition switch ªONº.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Start engine and warm it up to normal operating temperature.
4) Rev engine from idle to 2,000 rpm 20 times.
If 1st trip DTC is detected, go to ªDIAGNOSTIC
PROCEDUREº, EC-297.
With GST
Follow the procedure ªWith CONSULT-IIº above.
DTC P0505 IDLE AIR CONTROL VALVE (IACV) Ð AUXILIARY AIR CONTROL
(AAC) VALVE
QG
CONSULT-II Reference Value in Data Monitor Mode
EC-314