2003 NISSAN TEANA ignition

DI-74
WARNING CHIME

3. CHECK INTELLIGENT KEY UNIT INPUT SIGNAL
With CONSULT-ll
1. Select “INTELLIGENT KEY”.
2. With “DATA MONITOR”, confirm “PUSH SW” when the ignition
knob switch is operated. Refer to BL-93, "
CONSULT-II Func-
tions (INTELLIGENT KEY)" .
Without CONSULT-ll
Check voltage between Intelligent Key unit harness connector M31
terminal 27 and ground.
OK or NG
OK >> Replace Intelligent Key unit. Refer to BL-117, "Removal
and Installation of Intelligent Key Unit" .
NG >> GO TO 4.
4. CHECK IGNITION KNOB SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ignition knob switch, key switch and key lock solenoid connector.
3. Check voltage between ignition knob switch, key switch and key
lock solenoid harness connector M20 terminal 7 and ground.
OK or NG
OK >> GO TO 5.
NG >> Check harness between ignition knob switch, key switch
and key lock solenoid and fuse. “PUSH SW”
When ignition knob switch
is pushed: ON
When ignition knob switch
is withdrawn: OFF
SKIA5064E
27 – Ground
When ignition knob switch
is pushed: Approx. 12 V
When ignition knob switch
is withdrawn: Approx. 0 V
SKIB0788E
7 – Ground : Battery voltage.
SKIB1254E

WARNING CHIME
DI-75
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DI

5. CHECK IGNITION KNOB SWITCH
Check continuity between ignition knob switch, key switch and key
lock solenoid connector M20 terminals 2 and 7.
OK or NG
OK >> GO TO 6.
NG >> Replace ignition knob switch, key switch and key lock
solenoid.
6. CHECK IGNITION KNOB SWITCH CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit harness connector
M31 terminal 27 and ignition knob switch, key switch and key
lock solenoid harness connector M20 terminal 2.
3. Check continuity between Intelligent Key unit harness connector
M31 terminal 27 and ground.
OK or NG
OK >> Replace Intelligent Key unit. Refer to BL-117, "Removal
and Installation of Intelligent Key Unit" .
NG >> Repair harness or connector.
Light Warning Chime Does Not OperateBKS001TC
1. CHECK WARNING CHIME OPERATION
Check the chime under conditions in exception of light warning chime operation.
Dose warning chime sound?
YES >> GO TO 2.
NO >> Go to DI-67, "
Key Warning Chime and Light Warning Chime Does Not Operated" .
2. CHECK BCM INPUT SIGNAL
1. Select “BCM” on CONSULT-II.
2. With “DATA MONITOR” of “BUZZER”, confirm “LIGHT SW 1ST”
when the lighting switch is operated.
OK or NG
OK >> Replace BCM. Refer to BCS-16, "Removal and Installa-
tion of BCM" .
NG >> Check the lighting switch. Refer to LT- 1 7 6 , "
Removal
and Installation" . 2 – 7
When ignition knob
switch is pushed: Continuity should exist.
When ignition knob
switch is withdrawn: Continuity should not exist.
SKIB1258E
27 – 2 : Continuity should exist.
27 – Ground : Continuity should not exist.
SKIB1259E
“LIGHT SW 1ST”
Lighting switch (1st position) : ON
Lighting switch (OFF) : OFF
SKIB0789E

EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
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SECTION EC
A
EC

ENGINE CONTROL SYSTEM
QR
INDEX FOR DTC ...................................................... 10
DTC No. Index ....................................................... 10
Alphabetical Index .................................................. 12
PRECAUTIONS ........................................................ 14
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................ 14
On Board Diagnostic (OBD) System of Engine ...... 14
Precaution .............................................................. 14
PREPARATION ......................................................... 18
Special Service Tools ............................................. 18
Commercial Service Tools ...................................... 19
ENGINE CONTROL SYSTEM .................................. 20
System Diagram ..................................................... 20
Multiport Fuel Injection (MFI) System .................... 21
Electronic Ignition (EI) System ............................... 23
Fuel Cut Control (At No Load and High Engine
Speed) .................................................................... 24
AIR CONDITIONING CUT CONTROL ..................... 25
Input/Output Signal Chart ....................................... 25
CAN COMMUNICATION .......................................... 26
System Description ................................................ 26
EVAPORATIVE EMISSION SYSTEM ....................... 27
Description ............................................................. 27
Component Inspection ........................................... 29
POSITIVE CRANKCASE VENTILATION ................. 30
Description ............................................................. 30
Component Inspection ........................................... 30
NATS (NISSAN ANTI-THEFT SYSTEM) .................. 32
Description ............................................................. 32
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 33
Introduction ............................................................ 33
Two Trip Detection Logic ........................................ 33
Emission-related Diagnostic Information ................ 33
Malfunction Indicator (MI) ....................................... 36
BASIC SERVICE PROCEDURE .............................. 40
Basic Inspection ..................................................... 40
Idle Speed and Ignition Timing Check .................... 45
Procedure After Replacing ECM ............................ 47Accelerator Pedal Released Position Learning ...... 47
Throttle Valve Closed Position Learning ................. 47
Idle Air Volume Learning ........................................ 47
Fuel Pressure Check .............................................. 49
TROUBLE DIAGNOSIS ............................................ 52
Trouble Diagnosis Introduction ............................... 52
DTC Inspection Priority Chart ................................. 58
Fail-Safe Chart ....................................................... 59
Symptom Matrix Chart ............................................ 60
Engine Control Component Parts Location ............ 64
Vacuum Hose Drawing ........................................... 69
Circuit Diagram ....................................................... 70
ECM Harness Connector Terminal Layout ............. 72
ECM Terminals and Reference Value ..................... 72
CONSULT-II Function (ENGINE) ............................ 80
CONSULT-II Reference Value in Data Monitor Mode
... 90
Major Sensor Reference Graph in Data Monitor
Mode ....................................................................... 93
TROUBLE DIAGNOSIS - SPECIFICATION VALUE ... 95
Description .............................................................. 95
Testing Condition .................................................... 95
Inspection Procedure .............................................. 95
Diagnostic Procedure ............................................. 96
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .......................................................................105
Description ............................................................105
Diagnostic Procedure ...........................................105
POWER SUPPLY AND GROUND CIRCUIT ...........106
Wiring Diagram .....................................................106
Diagnostic Procedure ...........................................107
Ground Inspection .................................................111
DTC U1000, U1001 CAN COMMUNICATION LINE .113
Description ............................................................113
On Board Diagnosis Logic ....................................113
DTC Confirmation Procedure ...............................113
Wiring Diagram .....................................................114
Diagnostic Procedure ...........................................115
DTC P0011 IVT CONTROL .....................................116
Description ............................................................116

EC-4 DTC P2138 APP SENSOR .....................................272
Component Description ........................................272
CONSULT-II Reference Value in Data Monitor Mode
.272
On Board Diagnosis Logic ....................................272
DTC Confirmation Procedure ...............................273
Wiring Diagram .....................................................274
Diagnostic Procedure ...........................................275
Component Inspection ..........................................279
Removal and Installation ......................................279
ELECTRICAL LOAD SIGNAL ................................280
Description ............................................................280
CONSULT-II Reference Value in Data Monitor Mode
.280
Diagnostic Procedure ...........................................280
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE .................................................282
Description ............................................................282
CONSULT-II Reference Value in Data Monitor Mode
.282
Wiring Diagram .....................................................283
Diagnostic Procedure ...........................................285
Component Inspection ..........................................288
Removal and Installation ......................................288
FUEL INJECTOR ....................................................289
Component Description ........................................289
CONSULT-II Reference Value in Data Monitor Mode
.289
Wiring Diagram .....................................................290
Diagnostic Procedure ...........................................291
Component Inspection ..........................................293
Removal and Installation ......................................294
FUEL PUMP ............................................................295
Description ............................................................295
CONSULT-II Reference Value in Data Monitor Mode
.295
Wiring Diagram .....................................................296
Diagnostic Procedure ...........................................297
Component Inspection ..........................................300
Removal and Installation ......................................300
HO2S1 .....................................................................301
Component Description ........................................301
CONSULT-II Reference Value in Data Monitor Mode
.301
Wiring Diagram .....................................................302
Diagnostic Procedure ...........................................304
Component Inspection ..........................................305
Removal and Installation ......................................307
HO2S1 HEATER .....................................................308
Description ............................................................308
CONSULT-II Reference Value in Data Monitor Mode
.308
Wiring Diagram .....................................................309
Diagnostic Procedure ...........................................310
Component Inspection ..........................................312
Removal and Installation ......................................312
HO2S2 .....................................................................313
Component Description ........................................313CONSULT-II Reference Value in Data Monitor Mode
.313
Wiring Diagram .....................................................314
Diagnostic Procedure ............................................315
Component Inspection ..........................................317
Removal and Installation .......................................318
HO2S2 HEATER ......................................................319
Description ............................................................319
CONSULT-II Reference Value in Data Monitor Mode
.319
Wiring Diagram .....................................................320
Diagnostic Procedure ............................................321
Component Inspection ..........................................323
Removal and Installation .......................................323
IAT SENSOR ...........................................................324
Component Description ........................................324
Wiring Diagram .....................................................325
Diagnostic Procedure ............................................326
Component Inspection ..........................................328
Removal and Installation .......................................328
IGNITION SIGNAL ..................................................329
Component Description ........................................329
Wiring Diagram .....................................................330
Diagnostic Procedure ............................................333
Component Inspection ..........................................337
Removal and Installation .......................................338
REFRIGERANT PRESSURE SENSOR ..................339
Component Description ........................................339
Wiring Diagram .....................................................340
Diagnostic Procedure ............................................341
Removal and Installation .......................................343
MI & DATA LINK CONNECTORS ...........................344
Wiring Diagram .....................................................344
SERVICE DATA AND SPECIFICATIONS (SDS) ....346
Fuel Pressure ........................................................346
Idle Speed and Ignition Timing ..............................346
Mass Air Flow Sensor ...........................................346
Intake Air Temperature Sensor .............................346
Engine Coolant Temperature Sensor ....................346
Crankshaft Position Sensor (POS) .......................346
Camshaft Position Sensor (PHASE) .....................346
Heated Oxygen Sensor 1 Heater ..........................346
Heated Oxygen sensor 2 Heater ..........................346
Throttle Control Motor ...........................................346
Fuel Injector ..........................................................346
Fuel Pump .............................................................346
VQ
INDEX FOR DTC .....................................................347
DTC No. Index ......................................................347
Alphabetical Index .................................................349
PRECAUTIONS .......................................................351
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ...............................................................351
On Board Diagnostic (OBD) System of Engine ....351
Precaution .............................................................351

EC-5
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ECA
PREPARATION ....................................................... 355
Special Service Tools ........................................... 355
Commercial Service Tools .................................... 356
ENGINE CONTROL SYSTEM ................................ 357
System Diagram ................................................... 357
Multiport Fuel Injection (MFI) System .................. 358
Electronic Ignition (EI) System ............................. 360
Fuel Cut Control (at No Load and High Engine
Speed) .................................................................. 361
AIR CONDITIONING CUT CONTROL ................... 362
Input/Output Signal Chart ..................................... 362
System Description .............................................. 362
AUTOMATIC SPEED CONTROL DEVICE (ASCD) . 363
System Description .............................................. 363
Component Description ........................................ 364
CAN COMMUNICATION ........................................ 365
System Description .............................................. 365
EVAPORATIVE EMISSION SYSTEM ..................... 366
Description ........................................................... 366
Component Inspection ......................................... 369
POSITIVE CRANKCASE VENTILATION ............... 370
Description ........................................................... 370
Component Inspection ......................................... 370
NATS (NISSAN ANTI-THEFT SYSTEM) ................ 372
Description ........................................................... 372
ON BOARD DIAGNOSTIC (OBD) SYSTEM .......... 373
Introduction .......................................................... 373
Two Trip Detection Logic ...................................... 373
Emission-related Diagnostic Information .............. 373
Malfunction Indicator (MI) ..................................... 377
BASIC SERVICE PROCEDURE ............................ 381
Basic Inspection ................................................... 381
Idle Speed and Ignition Timing Check .................. 387
Procedure After Replacing ECM .......................... 389
Accelerator Pedal Released Position Learning .... 389
Throttle Valve Closed Position Learning .............. 389
Idle Air Volume Learning ...................................... 389
Fuel Pressure Check ............................................ 392
TROUBLE DIAGNOSIS .......................................... 394
Trouble Diagnosis Introduction ............................. 394
DTC Inspection Priority Chart .............................. 400
Fail-Safe Chart ..................................................... 401
Symptom Matrix Chart ......................................... 402
Engine Control Component Parts Location .......... 406
Vacuum Hose Drawing ......................................... 412
Circuit Diagram .................................................... 413
ECM Harness Connector Terminal Layout ........... 415
ECM Terminals and Reference Value .................. 415
CONSULT-II Function (ENGINE) ......................... 425
CONSULT-II Reference Value in Data Monitor Mode
. 434
Major Sensor Reference Graph in Data Monitor
Mode .................................................................... 438
TROUBLE DIAGNOSIS - SPECIFICATION VALUE . 440
Description ........................................................... 440
Testing Condition .................................................. 440
Inspection Procedure ........................................... 440
Diagnostic Procedure ........................................... 441
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-DENT .......................................................................450
Description ............................................................450
Diagnostic Procedure ...........................................450
POWER SUPPLY AND GROUND CIRCUIT ...........451
Wiring Diagram .....................................................451
Diagnostic Procedure ...........................................452
Ground Inspection ................................................457
DTC U1000, U1001 CAN COMMUNICATION LINE .458
Description ............................................................458
On Board Diagnosis Logic ....................................458
DTC Confirmation Procedure ...............................458
Wiring Diagram .....................................................459
Diagnostic Procedure ...........................................460
DTC P0011, P0021 IVT CONTROL ........................461
Description ............................................................461
CONSULT-II Reference Value in Data Monitor Mode
.461
On Board Diagnosis Logic ....................................462
DTC Confirmation Procedure ...............................462
Overall Function Check ........................................463
Diagnostic Procedure ...........................................464
Component Inspection ..........................................465
Removal and Installation ......................................465
DTC P0102, P0103 MAF SENSOR ........................466
Component Description ........................................466
CONSULT-II Reference Value in Data Monitor Mode
.466
On Board Diagnosis Logic ....................................466
DTC Confirmation Procedure ...............................467
Wiring Diagram .....................................................468
Diagnostic Procedure ...........................................469
Component Inspection ..........................................472
Removal and Installation ......................................473
DTC P0117, P0118 ECT SENSOR .........................474
Component Description ........................................474
On Board Diagnosis Logic ....................................474
DTC Confirmation Procedure ...............................475
Wiring Diagram .....................................................476
Diagnostic Procedure ...........................................477
Component Inspection ..........................................478
Removal and Installation ......................................478
DTC P0122, P0123 TP SENSOR ............................479
Component Description ........................................479
CONSULT-II Reference Value in Data Monitor Mode
.479
On Board Diagnosis Logic ....................................479
DTC Confirmation Procedure ...............................480
Wiring Diagram .....................................................481
Diagnostic Procedure ...........................................482
Component Inspection ..........................................485
Removal and Installation ......................................485
DTC P0132, P0152 HO2S1 .....................................486
Component Description ........................................486
CONSULT-II Reference Value in Data Monitor Mode
.486
On Board Diagnosis Logic ....................................486
DTC Confirmation Procedure ...............................487
Wiring Diagram .....................................................488
Diagnostic Procedure ...........................................491

EC-8 Diagnostic Procedure ...........................................648
Component Inspection ..........................................651
Removal and Installation ......................................651
DTC P2138 APP SENSOR .....................................652
Component Description ........................................652
CONSULT-II Reference Value in Data Monitor Mode
.652
On Board Diagnosis Logic ....................................652
DTC Confirmation Procedure ...............................653
Wiring Diagram .....................................................654
Diagnostic Procedure ...........................................655
Component Inspection ..........................................659
Removal and Installation ......................................659
ASCD BRAKE SWITCH ..........................................660
Component Description ........................................660
CONSULT-II Reference Value in Data Monitor Mode
.660
Wiring Diagram .....................................................661
Diagnostic Procedure ...........................................662
Component Inspection ..........................................666
ASCD INDICATOR ..................................................667
Component Description ........................................667
CONSULT-II Reference Value in Data Monitor Mode
.667
Wiring Diagram .....................................................668
Diagnostic Procedure ...........................................669
ELECTRICAL LOAD SIGNAL ................................670
Description ............................................................670
CONSULT-II Reference Value in Data Monitor Mode
.670
Diagnostic Procedure ...........................................670
ELECTRONIC CONTROLLED ENGINE MOUNT ..672
System Description ...............................................672
CONSULT-II Reference Value in Data Monitor Mode
.672
Wiring Diagram .....................................................673
Diagnostic Procedure ...........................................674
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE .................................................677
Description ............................................................677
CONSULT-II Reference Value in Data Monitor Mode
.677
Wiring Diagram .....................................................678
Diagnostic Procedure ...........................................680
Component Inspection ..........................................683
Removal and Installation ......................................683
FUEL INJECTOR ....................................................684
Component Description ........................................684
CONSULT-II Reference Value in Data Monitor Mode
.684
Wiring Diagram .....................................................685
Diagnostic Procedure ...........................................686
Component Inspection ..........................................689
Removal and Installation ......................................689
FUEL PUMP ............................................................690
Description ............................................................690
CONSULT-II Reference Value in Data Monitor Mode
.690
Wiring Diagram .....................................................691Diagnostic Procedure ............................................692
Component Inspection ..........................................695
Removal and Installation .......................................695
HO2S1 .....................................................................696
Component Description ........................................696
CONSULT-II Reference Value in Data Monitor Mode
.696
Wiring Diagram .....................................................697
Diagnostic Procedure ............................................700
Component Inspection ..........................................704
Removal and Installation .......................................705
HO2S1 HEATER ......................................................706
Description ............................................................706
CONSULT-II Reference Value in Data Monitor Mode
.706
Wiring Diagram .....................................................707
Diagnostic Procedure ............................................711
Component Inspection ..........................................713
Removal and Installation .......................................713
HO2S2 .....................................................................714
Component Description ........................................714
CONSULT-II Reference Value in Data Monitor Mode
.714
Wiring Diagram .....................................................715
Diagnostic Procedure ............................................718
Component Inspection ..........................................720
Removal and Installation .......................................722
HO2S2 HEATER ......................................................723
Description ............................................................723
CONSULT-II Reference Value in Data Monitor Mode
.723
Wiring Diagram .....................................................724
Diagnostic Procedure ............................................727
Component Inspection ..........................................729
Removal and Installation .......................................729
IAT SENSOR ...........................................................730
Component Description ........................................730
Wiring Diagram .....................................................731
Diagnostic Procedure ............................................732
Component Inspection ..........................................734
Removal and Installation .......................................734
IGNITION SIGNAL ..................................................735
Component Description ........................................735
Wiring Diagram .....................................................736
Diagnostic Procedure ............................................741
Component Inspection ..........................................746
Removal and Installation .......................................747
REFRIGERANT PRESSURE SENSOR ..................748
Component Description ........................................748
Wiring Diagram .....................................................749
Diagnostic Procedure ............................................750
Removal and Installation .......................................752
VIAS .........................................................................753
Description ............................................................753
CONSULT-II Reference Value in Data Monitor Mode
.754
Wiring Diagram .....................................................755
Diagnostic Procedure ............................................757

EC-9
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Component Inspection ......................................... 760
Removal and Installation ...................................... 761
VSS ......................................................................... 762
Description ........................................................... 762
Diagnostic Procedure ........................................... 762
MI & DATA LINK CONNECTORS .......................... 763
Wiring Diagram .................................................... 763
SERVICE DATA AND SPECIFICATIONS (SDS) .... 765
Fuel Pressure ....................................................... 765
Idle Speed and Ignition Timing ............................. 765Mass Air Flow Sensor ...........................................765
Intake Air Temperature Sensor .............................765
Engine Coolant Temperature Sensor ...................765
Heated Oxygen Sensor 1 Heater .........................765
Heated Oxygen sensor 2 Heater ..........................765
Crankshaft Position Sensor (POS) .......................765
Camshaft Position Sensor (PHASE) ....................765
Throttle Control Motor ...........................................765
Fuel Injector ..........................................................765
Fuel Pump ............................................................766

EC-14
[QR]
PRECAUTIONS

PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BBS005B9
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
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 must be per-
formed by an authorized NISSAN/INFINITI 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 SRS 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 and/or orange harnesses or
harness connectors.
On Board Diagnostic (OBD) System of EngineBBS005BA
The 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 OFF and disconnect the negative battery cable 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 PG-71, "
HAR-
NESS CONNECTOR" .

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 erase the unnecessary malfunction information (repairs completed) from the ECM
before returning the vehicle to the customer.
PrecautionBBS005BB

Always use a 12 volt battery as power source.

Do not attempt to disconnect battery cables while engine is
running.

Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative
battery cable. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned OFF.

Before removing parts, turn ignition switch OFF and then
disconnect negative battery cable.
SEF289H