ignition NISSAN TEANA 2003 Service Manual

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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

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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

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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

ENGINE CONTROL SYSTEM
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FUEL INJECTION TIMING
Two types of systems are used.
Sequential Multiport Fuel Injection System
Fuel is injected into each cylinder during each engine cycle according to the firing order. This system is used
when the engine is running.
Simultaneous Multiport Fuel Injection System
Fuel is injected simultaneously into all four cylinders twice each engine cycle. In other words, pulse signals of
the same width are simultaneously transmitted from the ECM.
The four fuel injectors will then receive the signals two times for each engine cycle.
This system is used when the engine is being started and/or if the fail-safe system (CPU) is operating.
FUEL SHUT-OFF
Fuel to each cylinder is cut off during deceleration or operation of the engine at excessively high speeds.
Electronic Ignition (EI) SystemBBS005BG
INPUT/OUTPUT SIGNAL CHART
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
Firing order: 1-3-4-2
The ignition timing is controlled by the ECM to maintain the best air-fuel ratio for every running condition of the
engine. The ignition timing data is stored in the ECM.
The ECM receives information such as the injection pulse width and camshaft position sensor signal. Comput-
ing this information, ignition signals are transmitted to the power transistor.
During the following conditions, the ignition timing is revised by the ECM according to the other data stored in
the ECM.

At starting

During warm-up

At idle

At low battery voltage

During acceleration
SEF337W
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Engine speed*
2
Piston position
Ignition timing
controlPower transistor Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Knock sensor Engine knocking
Park/neutral position (PNP) switch Gear position
Battery
Battery voltage*
2
Wheel sensor
Vehicle speed*1

EC-24
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ENGINE CONTROL SYSTEM

The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed
within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not
operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition.
The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.
Fuel Cut Control (At No Load and High Engine Speed)BBS005BH
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line.
SYSTEM DESCRIPTION
If the engine speed is above 1,800 rpm under no load (for example, the shift position is neutral and engine
speed is over 1,800 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies
based on engine speed.
Fuel cut will be operated until the engine speed reaches 1,500 rpm, then fuel cut will be cancelled.
NOTE:
This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System, EC-21
.
Sensor Input Signal to ECM ECM function Actuator
Park/neutral position (PNP) switch Neutral position
Fuel cut control Fuel injector Accelerator pedal position sensor Accelerator pedal position
Engine coolant temperature sensor Engine coolant temperature
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed
Wheel sensor Vehicle speed*

EC-32
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NATS (NISSAN ANTI-THEFT SYSTEM)

NATS (NISSAN ANTI-THEFT SYSTEM)PFP:25386
DescriptionBBS005BO

If the security indicator lights up with the ignition switch in
the ON position or “NATS MALFUNCTION” is displayed on
“SELF-DIAG RESULTS” screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card.
Refer to BL-139, "
NATS(Nissan Anti-Theft System)" .

Confirm no self-diagnostic results of NATS is displayed
before touching “ERASE” in “SELF-DIAG RESULTS” mode
with CONSULT-II.

When replacing ECM, initialization of NATS system and reg-
istration of all NATS ignition key IDs must be carried out
with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle owner.
Regarding the procedures of NATS initialization and all NATS ignition key ID registration, refer to
CONSULT-II Operation Manual, NATS.
SEF543X

EC-36
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ON BOARD DIAGNOSTIC (OBD) SYSTEM

1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2. Touch “ENGINE”.
3. Touch “SELF-DIAG RESULTS”.
4. Touch “ERASE”. (The DTC in the ECM will be erased.)
Without CONSULT-II
1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once.
2. Wait at least 10 seconds and then turn it ON (engine stopped) again.
3. Change the diagnostic test mode from Mode II to Mode I by depressing the accelerator pedal.

If the battery is disconnected, the emission-related diagnostic information will be lost within 24
hours.

The following data are cleared when the ECM memory is erased.
–Diagnostic trouble codes
–1st trip diagnostic trouble codes
–Freeze frame data
–1st trip freeze frame data
Actual work procedures are explained using a DTC as an example. Be careful so that not only the DTC, but all
of the data listed above, are cleared from the ECM memory during work procedures.
Malfunction Indicator (MI)BBS005BS
DESCRIPTION
The MI is located on the instrument panel.
1. The MI will light up when the ignition switch is turned ON without
the engine running. This is a bulb check.
If the MI does not light up, refer to DI-35, "
WARNING LAMPS"
or see EC-344, "MI & DATA LINK CONNECTORS" .
2. When the engine is started, the MI should go off.
If the MI remains on, the on board diagnostic system has
detected an engine system malfunction.
ON BOARD DIAGNOSTIC SYSTEM FUNCTION
The on board diagnostic system has the following four functions.
PBIB2496E
SAT652J

ON BOARD DIAGNOSTIC (OBD) SYSTEM
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When there is an open circuit on MI circuit, the ECM can not warn the driver by lighting up MI when there is
trouble on engine control system.
Therefore, when Electrical controlled throttle and part of the ECM related diagnoses are continuously detected
as NG for 5-trips, ECM warns the driver that engine control system has trouble and MI circuit is open by
means of operating fail-safe function.
The fail-safe function also operates when above diagnoses except MI circuit are detected and demands the
driver to repair the trouble.
MI Flashing without DTC
If the ECM is in Diagnostic Test Mode II, MI may flash when engine is running. In this case, check ECM diag-
nostic test mode. EC-37, "
HOW TO SWITCH DIAGNOSTIC TEST MODE" .
How to switch the diagnostic test (function) modes, and details of the above functions are described later, EC-
37 .
The following emission-related diagnostic information is cleared when the ECM memory is erased.

Diagnostic trouble codes

1st trip diagnostic trouble codes

Freeze frame data

1st trip freeze frame data

Others
HOW TO SWITCH DIAGNOSTIC TEST MODE
NOTE:

It is better to count the time accurately with a clock.

It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit
has a malfunction.
Diagnostic Test
ModeKEY and ENG.
StatusFunction Explanation of Function
Mode I Ignition switch in
ON position
Engine stoppedBULB CHECK This function checks the MI bulb for damage (blown, open
circuit, etc.).
If the MI does not come on, check MI circuit.
Engine running MALFUNCTION
WARNINGThis is a usual driving condition. When a malfunction is
detected twice in two consecutive driving cycles (two trip
detection logic), the MI will light up to inform the driver that
a malfunction has been detected.
The following malfunctions will light up or blink the MI in
the 1st trip.

One trip detection diagnoses
Mode II Ignition switch in
ON position
Engine stoppedSELF-DIAGNOSTIC
RESULTSThis function allows DTCs and 1st trip DTCs to be read.
Engine running HEATED OXYGEN SENSOR 1
MONITORThis function allows the fuel mixture condition (lean or
rich), monitored by heated oxygen sensor 1, to be read.
Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut

EC-38
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ON BOARD DIAGNOSTIC (OBD) SYSTEM


Always ECM returns to Diagnostic Test Mode I after ignition switch is turned OFF.
How to Set Diagnostic Test Mode II (Self-Diagnostic Results)
1. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
2. Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MI starts
blinking.
4. Fully release the accelerator pedal.
ECM has entered to Diagnostic Test Mode II (Self-diagnostic results).
How to Set Diagnostic Test Mode II (Heated Oxygen Sensor 1 Monitor)
1. Set the ECM in Diagnostic Test Mode II (Self-diagnostic results). Refer to EC-38, "How to Set Diagnostic
Test Mode II (Self-Diagnostic Results)" .
2. Start Engine.
ECM has entered to Diagnostic Test Mode II (Heated oxygen sensor 1 monitor).
How to Erase Diagnostic Test Mode II (Self-Diagnostic Results)
1. Set ECM in Diagnostic Test Mode II (Self-diagnostic results). Refer to EC-38, "How to Set Diagnostic Test
Mode II (Self-Diagnostic Results)" .
2. Fully depress the accelerator pedal and keep it for more than 10 seconds.
The emission-related diagnostic information has been erased from the backup memory in the ECM.
3. Fully release the accelerator pedal, and confirm the DTC 0000 is displayed.
DIAGNOSTIC TEST MODE I — BULB CHECK
In this mode, the MI on the instrument panel should stay ON. If it remains OFF, check the bulb. Refer to DI-35,
"WARNING LAMPS" or see EC-344, "MI & DATA LINK CONNECTORS" .
DIAGNOSTIC TEST MODE I — MALFUNCTION WARNING

These DTC numbers are clarified in Diagnostic Test Mode II (SELF-DIAGNOSTIC RESULTS)
DIAGNOSTIC TEST MODE II — SELF-DIAGNOSTIC RESULTS
In this mode, the DTC and 1st trip DTC are indicated by the number of blinks of the MI as shown below.
The DTC and 1st trip DTC are displayed at the same time. If the MI does not illuminate in diagnostic test mode
I (Malfunction warning), all displayed items are 1st trip DTCs. If only one code is displayed when the MI illumi-
nates in diagnostic test mode II (SELF-DIAGNOSTIC RESULTS), it is a DTC; if two or more codes are dis-
PBIB0092E
MI Condition
ON When the malfunction is detected.
OFF No malfunction.