Index Manuals Nissan Pathfinder (2006 year) - Service and Repair Manual

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Nissan Pathfinder (2006 year). Manual - part 148

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

EC-43

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2006 Pathfinder

d.

Apply vacuum pressure to hose end [

−

13.3 kPa (

−

100 mmHg,

−

3.94 inHg)] with fuel gauge retainer

remaining open and check that the pressure is applicable.

Without CONSULT-II

1.

Remove fuel tank. Refer to

FL-11, "FUEL TANK"

2.

Drain fuel from the tank as follows:

a.

Remove fuel gauge retainer.

b.

Drain fuel from the tank using a handy pump into a fuel container.

3.

Check refueling EVAP vapor cut valve for being stuck to close as follows.
Blow air into the refueling EVAP vapor cut valve (from the end of EVAP/ORVR line hose), and check that
the air flows freely into the tank.

4.

Check refueling EVAP vapor cut valve for being stuck to open as follows.

a.

Connect vacuum pump to hose end.

b.

Remove fuel gauge retainer with fuel gauge unit.
Always replace O-ring with new one.

c.

Put fuel tank upside down.

d.

Apply vacuum pressure to hose end [

−

13.3 kPa (

−

100 mmHg,

−

3.94 inHg)] with fuel gauge retainer

remaining open and check that the pressure is applicable.

BBIA0568E

BBIA0568E

EC-44

POSITIVE CRANKCASE VENTILATION

2006 Pathfinder

POSITIVE CRANKCASE VENTILATION

PFP:11810

Description

UBS00K3N

SYSTEM DESCRIPTION

This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake
manifold. During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the
PCV valve. Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of venti-
lating air. The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air
passes through the hose connecting air inlet tubes to rocker cover. Under full-throttle condition, the manifold
vacuum is insufficient to draw the blow-by flow through the valve. The flow goes through the hose connection
in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not
meet the requirement. This is because some of the flow will go
through the hose connection to the air inlet tubes under all condi-
tions.

Component Inspection

UBS00K3O

PCV (POSITIVE CRANKCASE VENTILATION) VALVE

With engine running at idle, remove PCV valve from rocker cover. A
properly working valve makes a hissing noise as air passes through
it. A strong vacuum should be felt immediately when a finger is
placed over valve inlet.

SEC921C

PBIB1588E

PBIB1589E

POSITIVE CRANKCASE VENTILATION

EC-45

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PCV VALVE VENTILATION HOSE

1.

Check hoses and hose connections for leaks.

2.

Disconnect all hoses and clean with compressed air. If any hose
cannot be freed of obstructions, replace.

S-ET277

EC-46

NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

2006 Pathfinder

NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

PFP:25386

Description

UBS00K3P

●

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-100, "NVIS(NISSAN Vehicle Immobilizer Sys-

.

●

Confirm no self-diagnostic results of NVIS (NATS) is dis-
played before touching “ERASE” in “SELF-DIAG RESULTS”
mode with CONSULT-II.

●

When replacing ECM, initialization of NVIS (NATS) system
and registration of all NVIS (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 NVIS
(NATS) initialization and all NVIS (NATS) ignition key ID registration, refer to CONSULT-II Operation
Manual, IVIS/NVIS.

SEF543X

ON BOARD DIAGNOSTIC (OBD) SYSTEM

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EC

2006 Pathfinder

ON BOARD DIAGNOSTIC (OBD) SYSTEM

PFP:00028

Introduction

UBS00K3Q

The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:

The above information can be checked using procedures listed in the table below.

×

: Applicable

—: Not applicable

*: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.

The malfunction indicator lamp (MIL) on the instrument panel lights up when the same malfunction is detected
in two consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to

.)

Two Trip Detection Logic

UBS00K3R

When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MIL will not light up at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MIL lights up. The MIL lights up at the same time when the DTC is stored. <2nd
trip> The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation. Specific on board diagnostic items will cause the ECM to light up or blink the MIL,
and store DTC and Freeze Frame data, even in the 1st trip, as shown below.

×

: Applicable

—: Not applicable

When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting up MIL when there is
malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as
NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by means
of operating fail-safe function.

Emission-related diagnostic information

SAE Mode

Diagnostic Trouble Code (DTC)

Service $03 of SAE J1979

Freeze Frame data

Service $02 of SAE J1979

System Readiness Test (SRT) code

Service $01 of SAE J1979

1st Trip Diagnostic Trouble Code (1st Trip DTC)

Service $07 of SAE J1979

1st Trip Freeze Frame data

Test values and Test limits

Service $06 of SAE J1979

Calibration ID

Service $09 of SAE J1979

DTC

1st trip DTC

Freeze Frame

data

1st trip Freeze

Frame data

SRT code

SRT status

Test value

CONSULT-II

×

×

×

×

×

×

—

GST

×

×

×

—

×

×

×

ECM

×

×

*

—

—

—

×

—

Items

MIL

DTC

1st trip DTC

1st trip

2nd trip

1st trip

displaying

2nd trip

displaying

1st trip

displaying

2nd trip

display-

ing

Blinking

Lighting

up

Blinking

Lighting

up

Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0306 is being detected

×

—

—

—

—

—

×

—

Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0306 is being detected

—

—

×

—

—

×

—

—

One trip detection diagnoses
(Refer to

—

×

—

—

×

—

—

—

Except above

—

—

—

×

—

×

×

—

EC-48

ON BOARD DIAGNOSTIC (OBD) SYSTEM

2006 Pathfinder

The fail-safe function also operates when above diagnoses except MIL circuit are detected and demands the
driver to repair the malfunction.

Emission-related Diagnostic Information

UBS00K3S

EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS

×

: Applicable

—: Not applicable

Engine operating condition in fail-safe mode

Engine speed will not rise more than 2,500 rpm due to the fuel cut

Items

(CONSULT-II screen terms)

DTC*

1

SRT code

Test value/

Test limit

(GST only)

Trip

MIL

Reference

page

CONSULT-II

GST*

2

ECM*

3

CAN COMM CIRCUIT

U1000

1000*

5

—

—

1

×

CAN COMM CIRCUIT

U1001

1001*

5

—

—

2

—

CONTROL UNIT (CAN)

U1010

1010

—

—

1

×

NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.

P0000

0000

—

—

—

Flashing*

7

INT/V TIM CONT-B1

P0011

0011

—

—

2

×

INT/V TIM CONT-B2

P0021

0021

—

—

2

×

A/F SEN1 HTR (B1)

P0031

0031

—

—

2

×

A/F SEN1 HTR (B1)

P0032

0032

—

—

2

×

HO2S2 HTR (B1)

P0037

0037

—

×

2

×

HO2S2 HTR (B1)

P0038

0038

—

×

2

×

A/F SEN1 HTR (B2)

P0051

0051

—

—

2

×

A/F SEN1 HTR (B2)

P0052

0052

—

—

2

×

HO2S2 HTR (B2)

P0057

0057

—

×

2

×

HO2S2 HTR (B2)

P0058

0058

—

×

2

×

INT/V TIM V/CIR-B1

P0075

0075

—

—

2

×

INT/V TIM V/CIR-B2

P0081

0081

—

—

2

×

MAF SEN/CIRCUIT

P0101

0101

—

—

2

×

MAF SEN/CIRCUIT

P0102

0102

—

—

1

×

MAF SEN/CIRCUIT

P0103

0103

—

—

1

×

IAT SEN/CIRCUIT

P0112

0112

—

—

2

×

IAT SEN/CIRCUIT

P0113

0113

—

—

2

×

ECT SEN/CIRC

P0117

0117

—

—

1

×

ECT SEN/CIRC

P0118

0118

—

—

1

×

TP SEN 2/CIRC

P0122

0122

—

—

1

×

TP SEN 2/CIRC

P0123

0123

—

—

1

×

ECT SENSOR

P0125

0125

—

—

2

×

IAT SENSOR

P0127

0127

—

—

2

×

THERMSTAT FNCTN

P0128

0128

—

—

2

×

A/F SENSOR1 (B1)

P0130

0130

—

×

2

×

A/F SENSOR1 (B1)

P0131

0131

—

×

2

×

A/F SENSOR1 (B1)

P0132

0132

—

×

2

×

A/F SENSOR1 (B1)

P0133

0133

×

×

2

×

HO2S2 (B1)

P0137

0137

×

×

2

×

HO2S2 (B1)

P0138

0138

—

×

2

×

HO2S2 (B1)

P0139

0139

×

×

2

×

ON BOARD DIAGNOSTIC (OBD) SYSTEM

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A/F SENSOR1 (B2)

P0150

0150

—

×

2

×

A/F SENSOR1 (B2)

P0151

0151

—

×

2

×

A/F SENSOR1 (B2)

P0152

0152

—

×

2

×

A/F SENSOR1 (B2)

P0153

0153

×

×

2

×

HO2S2 (B2)

P0157

0157

×

×

2

×

HO2S2 (B2)

P0158

0158

—

×

2

×

HO2S2 (B2)

P0159

0159

×

×

2

×

FUEL SYS-LEAN-B1

P0171

0171

—

—

2

×

FUEL SYS-RICH-B1

P0172

0172

—

—

2

×

FUEL SYS-LEAN-B2

P0174

0174

—

—

2

×

FUEL SYS-RICH-B2

P0175

0175

—

—

2

×

FTT SENSOR

P0181

0181

—

—

2

×

FTT SEN/CIRCUIT

P0182

0182

—

—

2

×

FTT SEN/CIRCUIT

P0183

0183

—

—

2

×

TP SEN 1/CIRC

P0222

0222

—

—

1

×

TP SEN 1/CIRC

P0223

0223

—

—

1

×

MULTI CYL MISFIRE

P0300

0300

—

—

2

×

CYL 1 MISFIRE

P0301

0301

—

—

2

×

CYL 2 MISFIRE

P0302

0302

—

—

2

×

CYL 3 MISFIRE

P0303

0303

—

—

2

×

CYL 4 MISFIRE

P0304

0304

—

—

2

×

CYL 5 MISFIRE

P0305

0305

—

—

2

×

CYL 6 MISFIRE

P0306

0306

—

—

2

×

KNOCK SEN/CIRC-B1

P0327

0327

—

—

2

—

KNOCK SEN/CIRC-B1

P0328

0328

—

—

2

—

KNOCK SEN/CIRC-B2

P0332

0332

—

—

2

—

KNOCK SEN/CIRC-B2

P0333

0333

—

—

2

—

CKP SEN/CIRCUIT

P0335

0335

—

—

2

×

CMP SEN/CIRC-B1

P0340

0340

—

—

2

×

CMP SEN/CIRC-B2

P0345

0345

—

—

2

×

TW CATALYST SYS-B1

P0420

0420

×

×

2

×

TW CATALYST SYS-B2

P0430

0430

×

×

2

×

EVAP PURG FLOW/MON

P0441

0441

×

×

2

×

EVAP SMALL LEAK

P0442

0442

×

×

2

×

PURG VOLUME CONT/V

P0443

0443

—

—

2

×

PURG VOLUME CONT/V

P0444

0444

—

—

2

×

PURG VOLUME CONT/V

P0445

0445

—

—

2

×

VENT CONTROL VALVE

P0447

0447

—

—

2

×

VENT CONTROL VALVE

P0448

0448

—

—

2

×

EVAP SYS PRES SEN

P0451

0451

—

—

2

×

EVAP SYS PRES SEN

P0452

0452

—

—

2

×

EVAP SYS PRES SEN

P0453

0453

—

—

2

×

Items

(CONSULT-II screen terms)

DTC*

1

SRT code

Test value/

Test limit

(GST only)

Trip

MIL

Reference

page

CONSULT-II

GST*

2

ECM*

3

EC-50

ON BOARD DIAGNOSTIC (OBD) SYSTEM

2006 Pathfinder

EVAP GROSS LEAK

P0455

0455

—

—

2

×

EVAP VERY SML LEAK

P0456

0456

×

*

4

×

2

×

FUEL LEV SEN SLOSH

P0460

0460

—

—

2

×

FUEL LEVEL SENSOR

P0461

0461

—

—

2

×

FUEL LEVL SEN/CIRC

P0462

0462

—

—

2

×

FUEL LEVEL SEN/CIRC

P0463

0463

—

—

2

×

VEH SPEED SEN/CIRC*

6

P0500

0500

—

—

2

—

ISC SYSTEM

P0506

0506

—

—

2

×

ISC SYSTEM

P0507

0507

—

—

2

×

PW ST P SEN/CIRC

P0550

0550

—

—

2

—

ECM BACK UP/CIRC

P0603

0603

—

—

2

×

ECM

P0605

0605

—

—

1 or 2

×

or —

SENSOR POWER/CIRCUIT

P0643

0643

—

—

1

×

TCM

P0700

0700

—

—

1

×

PNP SW/CIRC

P0705

0705

—

—

2

×

ATF TEMP SEN/CIRC

P0710

0710

—

—

2

×

TURBINE SENSOR

P0717

0717

—

—

2

×

VEH SPD SEN/CIR AT*

6

P0720

0720

—

—

2

×

TCC SOLENOID/CIRC

P0740

0740

—

—

2

×

A/T TCC S/V FNCTN

P0744

0744

—

—

2

×

L/PRESS SOL/CIRC

P0745

0745

—

—

2

×

P-N POS SW/CIRCUIT

P0850

0850

—

—

2

×

CLOSED LOOP-B1

P1148

1148

—

—

1

×

CLOSED LOOP-B2

P1168

1168

—

—

1

×

TCS C/U FUNCTN

P1211

1211

—

—

2

—

TCS/CIRC

P1212

1212

—

—

2

—

ENG OVER TEMP

P1217

1217

—

—

1

×

CTP LEARNING

P1225

1225

—

—

2

—

CTP LEARNING

P1226

1226

—

—

2

—

BAT CURRENT SENSOR

P1550

1550

—

—

2

—

BAT CURRENT SENSOR

P1551

1551

—

—

2

—

BAT CURRENT SENSOR

P1552

1552

—

—

2

—

BAT CURRENT SENSOR

P1553

1553

—

—

2

—

BAT CURRENT SENSOR

P1554

1554

—

—

2

—

ASCD SW

P1564

1564

—

—

1

—

ASCD BRAKE SW

P1572

1572

—

—

1

—

ASCD VHL SPD SEN

P1574

1574

—

—

1

—

NATS MALFUNCTION

P1610 -

P1615

1610 - 1615

—

—

2

—

IN PLUY SPEED

P1715

1715

—

—

2

—

A/T INTERLOCK

P1730

1730

—

—

1

×

I/C SOLENOID/CIRC

P1752

1752

—

—

1

×

Items

(CONSULT-II screen terms)

DTC*

1

SRT code

Test value/

Test limit

(GST only)

Trip

MIL

Reference

page

CONSULT-II

GST*

2

ECM*

3

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