ecm NISSAN ALMERA N16 2003 Electronic Repair Manual

SEF289H
Before starting repairs which do not require battery power:
Turn off ignition switch.
Disconnect the negative battery terminal.
SGI233
To prevent serious burns:
Avoid contact with hot metal parts.
Do not remove the radiator cap when the engine is hot.
SGI234
Before servicing the vehicle:
Protect fenders, upholstery and carpeting with appropriate cov-
ers.
Take caution that keys, buckles or buttons do not scratch paint.
Clean all disassembled parts in the designated liquid or solvent
prior to inspection or assembly.
Replace oil seals, gaskets, packings, O-rings, locking washers,
cotter pins, self-locking nuts, etc. with new ones.
Replace inner and outer races of tapered roller bearings and
needle bearings as a set.
Arrange the disassembled parts in accordance with their
assembled locations and sequence.
Do not touch the terminals of electrical components which use
microcomputers (such as ECMs).
Static electricity may damage internal electronic components.
After disconnecting vacuum or air hoses, attach a tag to indi-
cate the proper connection.
Use only the fluids and lubricants specified in this manual.
Use approved bonding agent, sealants or their equivalents
when required.
Use tools and recommended special tools where specified for
safe and efficient service repairs.
When repairing the fuel, oil, water, vacuum or exhaust
systems, check all affected lines for leaks.
Dispose of drained oil or the solvent used for cleaning parts in
an appropriate manner.
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PRECAUTIONS
Precautions (Cont’d)
GI-5

Do not attempt to top off the fuel tank after the fuel pump nozzle
shuts off automatically. Continued refueling may cause fuel
overflow, resulting in fuel spray and possibly a fire.
WARNING:
To prevent ECM from storing the diagnostic trouble codes, do
not carelessly disconnect the harness connectors which are
related to the engine control system and TCM (Transmission
Control Module) system. The connectors should be discon-
nected only when working according to the WORK FLOW of
TROUBLE DIAGNOSES in EC and AT sections.
SGI787
PRECAUTIONS FOR MULTIPORT FUEL INJECTION
SYSTEM OR ENGINE CONTROL SYSTEM
NJGI0001S04Before connecting or disconnecting any harness connector for
the multiport fuel injection system or ECM:
Turn ignition switch to “OFF” position.
Disconnect negative battery terminal.
Otherwise, there may be damage to ECM.
Before disconnecting pressurized fuel line from fuel pump to
injectors, be sure to release fuel pressure.
Be careful not to jar components such as ECM and mass air
flow sensor.
PRECAUTIONS FOR THREE WAY CATALYSTNJGI0001S05If a large amount of unburned fuel flows into the catalyst, the cata-
lyst temperature will be excessively high. To prevent this, follow the
instructions below:
Use unleaded gasoline only. Leaded gasoline will seriously
damage the three way catalyst.
When checking for ignition spark or measuring engine
compression, make tests quickly and only when necessary.
Do not run engine when the fuel tank level is low, otherwise the
engine may misfire, causing damage to the catalyst.
Do not place the vehicle on flammable material. Keep flammable
material off the exhaust pipe and the three way catalyst.
SMA019D
PRECAUTIONS FOR HOSESNJGI0001S06Hose Removal and InstallationNJGI0001S0601To prevent damage to rubber hose, do not pry off rubber hose
with tapered tool or screwdriver.
PRECAUTIONS
Precautions (Cont’d)
GI-6

SGI862-A
DETECTABLE LINES AND NON-DETECTABLE LINESNJGI0003S0205In some wiring diagrams, two kinds of lines, representing wires,
with different weight are used.
A line with regular weight (wider line) represents a “detectable
line for DTC (Diagnostic Trouble Code)”. A “detectable line for
DTC” is a circuit in which ECM can detect its malfunctions with
the on board diagnostic system.
A line with less weight (thinner line) represents a “non-detect-
able line for DTC”. A “non-detectable line for DTC” is a circuit
in which ECM cannot detect its malfunctions with the on board
diagnostic system.
HOW TO READ WIRING DIAGRAMS
Description (Cont’d)
GI-18

Symbol Symbol explanation Symbol Symbol explanation
Check after engine is warmed up
sufficiently.Pin terminal check for SMJ type
ECM and TCM connectors.
For details regarding the terminal
arrangement, refer to the “ELEC-
TRICAL UNITS” electrical refer-
ence page at the end of the
manual.
Voltage should be measured with a
voltmeter.
Circuit resistance should be mea-
sured with an ohmmeter.
Current should be measured with an
ammeter.
Procedure with CONSULT-II
Procedure without CONSULT-II
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HOW TO FOLLOW TROUBLE DIAGNOSES
Key to Symbols Signifying Measurements or Procedures (Cont’d)
GI-35

NJGI0007
Function and System ApplicationNJGI0007S05
Diagnostic
test modeFunction ENGINE A/T ABS AIR BAGSMART
EN-
TRANCENATS*1NAVIGA-
TION
Work sup-
portThis mode enables a technician to
adjust some devices faster and
more accurate by following the indi-
cations on CONSULT-II.x ———X——
Self-diag-
nostic
resultsSelf-diagnostic results can be read
anderasedquickly. x x x x—x—
Trouble
diagnostic
recordCurrent self-diagnostic results and
all trouble diagnostic records previ-
ously stored can be read.——— x ———
ECU dis-
criminated
No.Classification number of a replace-
ment ECU can be read to prevent
an incorrect ECU from being
installed.——— x ———
Data monitorInput/Output data in the ECU
(ECM) can be read.x x x—x——
Data monitor
(Spec.)The specified values will be dis-
played when an OK/NG judgement
is difficult for the DATA MONITOR
items by Barchart and Line Graph.X ——————
DTC work
supportThis mode enables a technician to
set operating conditions to confirm
self-diagnoses status/results.x*2x —————
Active testDiagnostic Test Mode in which
CONSULT-II drives some actuators
apart from the ECMs and also
shifts some parameters in a speci-
fied range.x—x—x——
ECU (ECM)
part numberECU (ECM) part number can be
read.x x x ————
Control unit
initializationAll registered ignition key IDs in
NATS components can be initial-
ized and new IDs can be regis-
tered.————— x —
PIN
INITIALIZA-
TIONNavigation system will be locked
when the vehicle’s owner enters
the wrong PIN five consecutive
times.
To release the lock, use “PIN INI-
TIALIZATION”.—————— x
NAVI ID
INITIALIZA-
TIONIn nomal times regulation codes are
being communicated between Navi-
gation Control Unit and Dongle
Control Unit.
Use “NAVI ID INITIALIZATION” to
match the codes when either one
has been replaced due to break-
down or etc.—————— x
x: Applicable
*1: NATS (Nissan Anti-Theft System)
*2: For models with Euro-OBD system
CONSULT-II CHECKING SYSTEM
Function and System Application
GI-36

NJGI0011
ISO 15031-2NJGI0011S01All emission related terms used in this publication in accordance with ISO15031-2 are listed. Accordingly, new
terms, new acronyms/abbreviations and old terms are listed in the following chart.
***: Not applicable
NEW TERMNEW ACRONYM /
ABBREVIATIONOLD TERM
Air cleaner ACL Air cleaner
Barometric pressure sensor BARO sensor ***
Barometric pressure sensor-BCDD BAROS-BCDD BCDD
Camshaft position CMP ***
Camshaft position sensor CMPS Crank angle sensor
Canister *** Canister
Carburetor CARB Carburetor
Charge air cooler CAC Intercooler
Closed loop CL Closed loop
Closed throttle position switch CTP switch Idle switch
Clutch pedal position switch CPP switch Clutch switch
Continuous fuel injection system CFI system ***
Continuous trap oxidizer system CTOX system ***
Crankshaft position CKP ***
Crankshaft position sensor CKPS ***
Data link connector DLC Diagnostic connector for CONSULT
Diagnostic test mode DTM Diagnostic mode
Diagnostic test mode selector DTM selector Diagnostic mode selector
Diagnostic test mode I DTM I Mode I
Diagnostic test mode II DTM II Mode II
Diagnostic trouble code DTC Malfunction code
Direct fuel injection system DFI system ***
Distributor ignition system DI system Ignition timing control
Early fuel evaporation-mixture heater EFE-mixture heater Mixture heater
Early fuel evaporation system EFE system Mixture heater control
Electrically erasable programmable read
only memoryEEPROM ***
Electronic ignition system EI system Ignition timing control
Engine control EC ***
Engine control module ECM ECCS control unit
Engine coolant temperature ECT Engine temperature
Engine coolant temperature sensor ECTS Engine temperature sensor
Engine modification EM ***
Engine speed RPM Engine speedMA
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ISO 15031-2 TERMINOLOGY LIST
ISO 15031-2
GI-51

Cooling FanNJLC0026COMPONENTSNJLC0026S01
YLC023
CONTROL SYSTEMNJLC0026S02Cooling fans are controlled by the ECM. For details, refer to
EC-324 or EC-596, “DTC P1217 ENGINE OVER
TEMPERATURE”.
Changing Engine CoolantNJLC0037WARNING:
To avoid the danger of being scalded, never change the cool-
ant when the engine is hot.
— DRAINING ENGINE COOLANT —NJLC0037S011. Set air conditioning system as follows to prevent coolant from
remaining in the system.
a. Turn ignition switch ON and set temperature controller to maxi-
mum hot position.
b. Wait 10 seconds before turning ignition switch OFF.
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ENGINE COOLING SYSTEMQG
Cooling Fan
LC-17

REMOVAL AND INSTALLATION=NJLC00631. Remove under cover.
2. Drain coolant by removing lower radiator hose.
3. Disconnect radiator upper and lower hoses.
4. Remove radiator shroud.
5. Disconnect reservoir tank hose.
6. Remove radiator mounting bracket.
7. Remove radiator.
8. After repairing or replacing radiator, install any part removed in
reverse order of removal.
When filling radiator with coolant, refer to LC-43, “Changing
Engine Coolant”.
Cooling FanNJLC0064COMPONENTSNJLC0064S01
JLC347B
CONTROL SYSTEMNJLC0064S02Cooling fans are controlled by ECM. For details, refer to EC-130,
“DTC P1217 OVER HEAT”.
ENGINE COOLING SYSTEMYD
Radiator (Cont’d)
LC-42

EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
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SECTION
A
EC
ENGINE CONTROL SYSTEM
QG (WITH EURO-OBD)
INDEX FOR DTC ...................................................... 10
Alphabetical Index .................................................. 10
DTC No. Index ....................................................... 12
PRECAUTIONS ........................................................ 15
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................ 15
On Board Diagnostic (OBD) System of Engine and
A/T .......................................................................... 15
Precaution .............................................................. 15
Wiring Diagrams and Trouble Diagnosis ................ 18
PREPARATION ......................................................... 19
Special Service Tools ............................................. 19
Commercial Service Tools ...................................... 19
ENGINE CONTROL SYSTEM .................................. 21
System Diagram ..................................................... 21
Vacuum Hose Drawing ........................................... 22
System Chart ......................................................... 23
Multiport Fuel Injection (MFI) System .................... 23
Electronic Ignition (EI) System ............................... 25
Air Conditioning Cut Control ................................... 26
Fuel Cut Control (at No Load and High Engine
Speed) .................................................................... 27
CAN Communication .............................................. 27
BASIC SERVICE PROCEDURE .............................. 30
Idle Speed and Ignition Timing Check .................... 30
Accelerator Pedal Released Position Learning ...... 31
Throttle Valve Closed Position Learning ................ 31
Idle Air Volume Learning ........................................ 31
Fuel Pressure Check .............................................. 34
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 36
Introduction ............................................................ 36
Two Trip Detection Logic ........................................ 36
Emission-related Diagnostic Information ................ 37
NATS (Nissan Anti-theft System) ........................... 49
Malfunction Indicator (MI) ....................................... 49
OBD System Operation Chart ................................ 52
TROUBLE DIAGNOSIS ............................................ 58
Trouble Diagnosis Introduction ............................... 58DTC Inspection Priority Chart ................................. 62
Fail-safe Chart ........................................................ 63
Basic Inspection ..................................................... 65
Symptom Matrix Chart ............................................ 70
Engine Control Component Parts Location ............ 74
Circuit Diagram ....................................................... 78
ECM Harness Connector Terminal Layout ............. 80
ECM Terminals and Reference Value ..................
... 80
CONSULT-II Function ............................................. 87
Generic Scan Tool (GST) Function ......................... 97
CONSULT-II Reference Value in Data Monitor Mode
... 99
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................102
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .105
Description ............................................................105
Testing Condition ..................................................105
Inspection Procedure ............................................105
Diagnostic Procedure ...........................................106
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .......................................................................109
Description ............................................................109
Diagnostic Procedure ...........................................109
POWER SUPPLY CIRCUIT FOR ECM ...................110
Wiring Diagram .....................................................110
Diagnostic Procedure ............................................111
Component Inspection ..........................................115
DTC U1000, U1001 CAN COMMUNICATION LINE .116
Description ............................................................116
On Board Diagnosis Logic ....................................116
DTC Confirmation Procedure ...............................116
Wiring Diagram .....................................................117
Diagnostic Procedure ...........................................118
DTC P0011 IVT CONTROL .....................................119
Description ............................................................119
CONSULT-II Reference Value in Data Monitor Mode
.119
On Board Diagnosis Logic ....................................120
DTC Confirmation Procedure ...............................120
Diagnostic Procedure ...........................................121

EC-3
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ECA Component Inspection ......................................... 204
Removal and Installation ...................................... 204
DTC P0222, P0223 TP SENSOR ........................... 205
Component Description ........................................ 205
CONSULT-II Reference Value in Data Monitor Mode
. 205
On Board Diagnosis Logic ................................... 205
DTC Confirmation Procedure ............................... 205
Wiring Diagram .................................................... 207
Diagnostic Procedure ........................................... 208
Component Inspection ......................................... 210
Removal and Installation ...................................... 210
DTC P0226 APP SENSOR ......................................211
Component Description ......................................... 211
CONSULT-II Reference Value in Data Monitor Mode
.. 211
On Board Diagnosis Logic .................................... 211
DTC Confirmation Procedure ................................ 211
Wiring Diagram .................................................... 213
Diagnostic Procedure ........................................... 214
Component Inspection ......................................... 216
Removal and Installation ...................................... 217
DTC P0227, P0228 APP SENSOR ........................ 218
Component Description ........................................ 218
CONSULT-II Reference Value in Data Monitor Mode
. 218
On Board Diagnosis Logic ................................... 218
DTC Confirmation Procedure ............................... 218
Wiring Diagram .................................................... 220
Diagnostic Procedure ........................................... 221
Component Inspection ......................................... 223
Removal and Installation ...................................... 224
DTC P0300 - P0304 MULTIPLE CYLINDER MIS-
FIRE, NO. 1 - 4 CYLINDER MISFIRE ..................... 225
On Board Diagnosis Logic ................................... 225
DTC Confirmation Procedure ............................... 225
Diagnostic Procedure ........................................... 226
DTC P0327, P0328 KS ........................................... 230
Component Description ........................................ 230
On Board Diagnosis Logic ................................... 230
DTC Confirmation Procedure ............................... 230
Wiring Diagram .................................................... 231
Diagnostic Procedure ........................................... 232
Component Inspection ......................................... 233
Removal and Installation ...................................... 233
DTC P0335 CKP SENSOR (POS) .......................... 234
Component Description ........................................ 234
CONSULT-II Reference Value in Data Monitor Mode
. 234
On Board Diagnosis Logic ................................... 234
DTC Confirmation Procedure ............................... 234
Wiring Diagram ...................................................
. 235
Diagnostic Procedure ........................................... 236
Component Inspection ......................................... 238
Removal and Installation ...................................... 239
DTC P0340 CMP SENSOR (PHASE) ..................... 240
Component Description ........................................ 240
On Board Diagnosis Logic ................................... 240
DTC Confirmation Procedure ............................... 240Wiring Diagram .....................................................241
Diagnostic Procedure ...........................................242
Component Inspection ..........................................244
Removal and Installation ......................................245
DTC P0420 THREE WAY CATALYST FUNCTION . 246
On Board Diagnosis Logic ....................................246
DTC Confirmation Procedure ...............................246
Overall Function Check ........................................247
Diagnostic Procedure ...........................................248
DTC P0444 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE ...............................251
Description ............................................................251
CONSULT-II Reference Value in Data Monitor Mode
.251
On Board Diagnosis Logic ....................................252
DTC Confirmation Procedure ...............................252
Wiring Diagram .....................................................253
Diagnostic Procedure ...........................................254
Component Inspection ..........................................256
Removal and Installation ......................................256
DTC P0500 VSS ......................................................257
Description ............................................................257
On Board Diagnosis Logic ....................................257
DTC Confirmation Procedure ...............................257
Overall Function Check ........................................258
Diagnostic Procedure ...........................................259
DTC P0550 PSP SENSOR .....................................260
Component Description ........................................260
CONSULT-II Reference Value in Data Monitor Mode
.260
On Board Diagnosis Logic ....................................260
DTC Confirmation Procedure ...............................260
Wiring Diagram .....................................................261
Diagnostic Procedure ...........................................262
Component Inspection ..........................................264
DTC P0605 ECM .....................................................265
Component Description ........................................265
On Board Diagnosis Logic ....................................265
DTC Confirmation Procedure ...............................265
Diagnostic Procedure ...........................................266
DTC P1065 ECM POWER SUPPLY .......................268
Component Description ........................................268
On Board Diagnosis Logic ....................................268
DTC Confirmation Procedure ...............................268
Wiring Diagram .....................................................269
Diagnostic Procedure ...........................................270
DTC P1111 IVT CONTROL SOLENOID VALVE .....272
Component Description ........................................272
CONSULT-II Reference Value in Data Monitor Mode
.272
On Board Diagnosis Logic ....................................272
DTC Confirmation Procedure ...............................272
Wiring Diagram .....................................................273
Diagnostic Procedure ...........................................274
Component Inspection ..........................................275
Removal and Installation ......................................275
DTC P1121 ELECTRIC THROTTLE CONTROL
ACTUATOR .............................................................276
Component Description ........................................276